2013 Chevrolet Cruze

2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

DESCRIPTION AND OPERATION

CAMSHAFT ACTUATOR SYSTEM DESCRIPTION

Camshaft Actuator System Overview

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Fig. 1: Identifying Camshaft Actuator System Components
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

1 Camshaft Actuator Vane
2 Timing Chain Sprocket
3 Engine Oil Pressure-For retarding the camshaft
4 Camshaft
5 Input Signals from Engine Sensors
6 Engine Control Module (ECM)
7 Camshaft Actuator Solenoid
8 Engine Oil Pump
9 Engine Oil Pressure Supply
10 Engine Oil Drain
11 Engine Oil Pressure-For advancing the camshaft
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

12 Camshaft Actuator Rotor

13 Camshaft Position Sensor Reluctor
14 Camshaft Actuator Lock Pin
15 Camshaft Actuator Housing

The camshaft actuator system enables the engine control module (ECM) to change camshaft timing of all 4
camshafts while the engine is operating. The camshaft position (CMP) actuator assembly (15) varies the
camshaft position in response to directional changes in oil pressure. The CMP actuator solenoid valve controls
the oil pressure that is applied to advance or retard a camshaft. Modifying camshaft timing under changing
engine demand provides better balance between the following performance concerns:

 Engine power output

 Fuel economy

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 Tailpipe emissions

The CMP actuator solenoid valve (7) is controlled by the ECM. The crankshaft position (CKP) sensor and the
CMP sensors are used to monitor changes in camshaft positions. The ECM uses the following information in
order to calculate the desired camshaft positions:

 Engine coolant temperature

 Calculated engine oil temperature (EOT)
 Mass air flow (MAF)
 Throttle position (TP)
 Vehicle speed
 Volumetric efficiency

Operation

The CMP actuator assembly has an outer housing that is driven by an engine timing chain. Inside the assembly
is a rotor with fixed vanes that is attached to the camshaft. Oil pressure that is applied to the fixed vanes will
rotate a specific camshaft in relationship to the crankshaft. The movement of the intake camshafts will advance
the intake valve timing. The movement of the exhaust camshafts will retard the exhaust valve timing. When oil
pressure is applied to the return side of the vanes, the camshafts will return to 0 crankshaft degrees, or top dead
center (TDC). The CMP actuator solenoid valve directs the oil flow that controls the camshaft movement. The
ECM commands the CMP solenoid to move the solenoid plunger and spool valve until oil flows from the
advance passage (11). Oil flowing thru the CMP actuator assembly from the CMP solenoid advance passage
applies pressure to the advance side of the vanes in the CMP actuator assembly. When the camshaft position is
retarded, the CMP actuator solenoid valve directs oil to flow into the CMP actuator assembly from the retard
passage (3). The ECM can also command the CMP actuator solenoid valve to stop oil flow from both passages
in order to hold the current camshaft position.

The ECM operates the CMP actuator solenoid valve by pulse width modulation (PWM) of the solenoid coil.
The higher the PWM duty cycle, the larger the change in camshaft timing. The CMP actuator assembly also
contains a lock pin (14) that prevents movement between the outer housing and the rotor vane assembly. The
lock pin is released by oil pressure before any movement in the CMP actuator assembly takes place. The ECM
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

is continuously comparing CMP sensor inputs with CKP sensor input in order to monitor camshaft position and
detect any system malfunctions. If a condition exists in either the intake or exhaust camshaft actuator system,
the opposite bank, intake or exhaust, camshaft actuator will default to 0 crankshaft degrees.

CMP Actuator System Operation

Change in Camshaft
Driving Condition Position Objective Result
Idle No Change Minimize Valve Overlap Stabilized Idle Speed
Light Engine Load Retarded Valve Timing Decrease Valve Overlap Stabled Engine Output
Better Fuel Economy
Medium Engine Load Advanced Valve Timing Increase Valve Overlap
with Lower Emissions
Low to Medium RPM Advance Intake Valve Improved Low to Mid-
Advanced Valve Timing
with Heavy Load Closing range Torque
High RPM with Heavy Retard Intake Valve

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Retarded Valve Timing Improved Engine Output
Load Closing

ELECTRONIC IGNITION SYSTEM DESCRIPTION

Electronic Ignition System Operation

The electronic ignition system produces and controls the high energy secondary spark. This spark ignites the
compressed air/fuel mixture at precisely the correct time, providing optimal performance, fuel economy, and
control of exhaust emissions. The engine control module (ECM) collects information from the crankshaft
position sensor and the intake/exhaust camshaft position sensors to determine the sequence, dwell, and timing
of the spark for each cylinder. The ECM transmits a frequency signal to the ignition coil module on the
individual ignition control circuits to fire the spark plugs.

Crankshaft Position Sensor

The crankshaft position sensor is an externally magnetically biased digital output integrated circuit sensing
device. The sensor provides a pulse for each magnetic pole of the encoder wheel on the crankshaft. The sensor
produces an ON/OFF DC voltage of varying frequency, with 58 output pulses per crankshaft revolution. The
frequency of the sensor output depends on the velocity of the crankshaft. The ECM uses sensor signal pulse to
determine crankshaft speed and position to calculate the best timing for ignition and fuel injection. The ECM
also uses the crankshaft position sensor information to control camshaft phasing and to detect cylinder misfire.

The ECM also has a dedicated replicated crankshaft position sensor signal output circuit that may be used as an
input signal to other modules for monitoring engine RPM.

The crankshaft position sensor is connected to the engine control module by the circuits listed below:

 A 5 V reference circuit
 A low reference circuit
 A signal circuit

Crankshaft Encoder Wheel

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The crankshaft encoder wheel is part of the crankshaft. The encoder wheel consists of 58 tooth and a reference
gap. Each tooth on the encoder wheel is spaced 6° apart with a 12° space for the reference gap. The pulse from
the reference gap is known as the sync pulse. The sync pulse is used to synchronize the ignition coil module
firing sequence with the crankshaft position while the other tooth provides cylinder location during a revolution.

Camshaft Position Sensors

The intake and exhaust camshaft position sensors are each triggered by a notched reluctor wheel built onto the
camshaft sprockets. The four signal pulses occur every camshaft revolution. Each notch is a different size which
is used to identify the compression stroke of each cylinder and to enable sequential fuel injection. The camshaft
position sensors are connected to the ECM by the circuits listed below:

 A 5 V reference circuit
 A low reference circuit

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 A signal circuit

Ignition Coil Module

The ignition coil module integrates the 4 coils and the ignition control module within a single sealed
component.

The ignition coil module has the following circuits:

 An ignition voltage circuit

 A ground
 A low reference circuit
 4 ignition coil control circuits

The ECM controls the individual coils by transmitting timing pulses on the ignition coil control circuit to each
ignition coil to enable a spark event.

The spark plugs are connected to each coil by a short boot. The boot contains a spring that conducts the spark
energy from the coil to the spark plug. The spark plug electrode is coated with platinum for long wear and
higher efficiency.

Engine Control Module (ECM)

The ECM controls all ignition system functions and constantly adjusts the spark timing. The ECM monitors
information from various sensor inputs that include the following:

 The crankshaft position sensor

 The accelerator pedal position (APP)
 The manifold absolute pressure (MAP) sensor
 The intake air temperature (IAT) sensor
 The vehicle speed sensor (VSS)
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

 The engine knock sensor

 The engine coolant temperature (ECT) sensor
 The mass airflow (MAF) sensor
 The camshaft position sensors

ENGINE CONTROL MODULE DESCRIPTION

The Engine Control Module (ECM) interacts with many emission related components and systems, and
monitors emission related components and systems for deterioration. OBD II diagnostics monitor the system
performance and a diagnostic trouble code (DTC) sets if the system performance degrades. The ECM is part of
a network and communicates with various other vehicle control modules.

Malfunction indicator lamp (MIL) operation and DTC storage are dictated by the DTC type. A DTC is ranked
as a Type A or Type B if the DTC is emissions related. Type C is a non-emissions related DTC.

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The ECM is the control center of the engine controls system. Review the components and wiring diagrams in
order to determine which systems are controlled by the ECM.

The ECM constantly monitors the information from various sensors and other inputs, and controls the systems
that affect engine performance and emissions. The ECM also performs diagnostic tests on various parts of the
system and can turn on the MIL when it recognizes an operational problem that affects emissions. When the
ECM detects a malfunction, the ECM stores a DTC. The condition area is identified by the particular DTC that
is set. This aids the technician in making repairs.

ECM Function

The ECM can supply 5 V or 12 V to various sensors or switches. This is done through pull-up resistors to
regulated power supplies within the ECM. In some cases, even an ordinary shop voltmeter will not give an
accurate reading due to low input resistance. Therefore, a digital multimeter (DMM) with at least 10 megaohms
input impedance is required in order to ensure accurate voltage readings.

The ECM controls the output circuits by controlling the ground or the power feed circuit through transistors or a
device called an output driver module.

EEPROM

The electronically erasable programmable read only memory (EEPROM) is an integral part of the ECM. The
EEPROM contains program and calibration information that the ECM needs in order to control engine
operation.

Special equipment, as well as the correct program and calibration for the vehicle, are required in order to
reprogram the ECM.

Data Link Connector (DLC)

The data link connector (DLC) provides serial data communication for ECM diagnosis. This connector allows
the technician to use a scan tool in order to monitor various serial data parameters, and display DTC
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information. The DLC is located inside the driver's compartment, underneath the instrument panel.

Malfunction Indicator Lamp (MIL)

The malfunction indicator lamp (MIL) is inside the instrument panel cluster (IPC). The MIL is controlled by the
ECM and illuminates when the ECM detects a condition that affects vehicle emissions.

ECM Service Precautions

The ECM, by design, can withstand normal current draws that are associated with vehicle operations. However,
care must be used in order to avoid overloading any of these circuits. When testing for opens or shorts, do not
ground or apply voltage to any of the ECM circuits unless the diagnostic procedure instructs you to do so. These
circuits should only be tested with a DMM unless the diagnostic procedure instructs otherwise.

Emissions Diagnosis For State I/M Programs

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This OBD II equipped vehicle is designed to diagnose any conditions that could lead to excessive levels of the
following emissions:

 Hydrocarbons (HC)
 Carbon monoxide (CO)
 Oxides of nitrogen (NOx)
 Evaporative emission (EVAP) system losses

Should this vehicle's on-board diagnostic system (ECM) detect a condition that could result in excessive
emissions, the ECM turns ON the MIL and stores a DTC that is associated with the condition.

Aftermarket (Add-On) Electrical And Vacuum Equipment

CAUTION: Do not attach add-on vacuum operated equipment to this vehicle. The use
of add-on vacuum equipment may result in damage to vehicle components
or systems.

CAUTION: Connect any add-on electrically operated equipment to the vehicle's

electrical system at the 12 V battery (power and ground) in order to
prevent damage to the vehicle.

Aftermarket, add-on, electrical and vacuum equipment is defined as any equipment installed on a vehicle after
leaving the factory that connects to the vehicle's electrical or vacuum systems. No allowances have been made
in the vehicle design for this type of equipment.

Add-on electrical equipment, even when installed to these strict guidelines, may still cause the powertrain
system to malfunction. This may also include equipment not connected to the vehicle electrical system, such as
portable telephones and radios. Therefore, the first step in diagnosing any powertrain condition is to eliminate
all of the aftermarket electrical equipment from the vehicle. After this is done, if the problem still exists, the
problem may be diagnosed in the normal manner.
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Electrostatic Discharge (ESD) Damage

NOTE: In order to prevent possible electrostatic discharge damage to the ECM, DO

NOT touch the connector pins on the ECM.

The electronic components that are used in the control systems are often designed to carry very low voltage.
These electronic components are susceptible to damage caused by electrostatic discharge. Less than 100 V of
static electricity can cause damage to some electronic components. By comparison, it takes as much as 4, 000 V
for a person to even feel a static discharge.

There are several ways for a person to become statically charged. The most common methods of charging are
by friction and by induction. An example of charging by friction is a person sliding across a car seat.

Charging by induction occurs when a person with well insulated shoes stands near a highly charged object and

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momentarily touches ground. Charges of the same polarity are drained off leaving the person highly charged
with the opposite polarity. Static charges can cause damage, therefore, it is important to use care when handling
and testing electronic components.

Emissions Control Information Label

The underhood Vehicle Emissions Control Information Label contains important emission specifications. This
identifies the year, the displacement of the engine in liters, and the class of the vehicle.

This label is located in the engine compartment of every General Motors vehicle. If the label has been removed,
it can be ordered from GM service parts operations (GMSPO).

EVAPORATIVE EMISSION CONTROL SYSTEM DESCRIPTION

Typical Evaporative Emission (EVAP) System Hose Routing Diagram

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

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Fig. 2: View Of Evaporative Emission (EVAP) System Hose Routing Diagram
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

1 Evaporative Emissions (EVAP) Purge Solenoid Valve
2 EVAP Canister
3 EVAP Vapor Tube
4 Vapor Recirculation Tube
5 Fuel Tank Pressure Sensor
6 Fuel Filler Cap (Some Vehicles May Have A Capless Design)
7 Fuel Fill Pipe Inlet Check Valve
8 Fuel Tank
9 EVAP Canister Vent Solenoid Valve
10 Vent hose
11 EVAP Purge Tube
12 Purge Tube Check Valve, Turbo-Charged Applications Only
13 EVAP Canister Purge Tube Connector
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EVAP System Operation

The evaporative emission (EVAP) control system limits fuel vapors from escaping into the atmosphere. Fuel
tank vapors are allowed to move from the fuel tank, due to pressure in the tank, through the EVAP vapor tube,
into the EVAP canister. Carbon in the canister absorbs and stores the fuel vapors. Excess pressure is vented
through the vent hose and EVAP vent solenoid valve to the atmosphere. The EVAP canister stores the fuel
vapors until the engine is able to use them. At an appropriate time, the engine control module (ECM) will
command the EVAP purge solenoid valve ON, allowing engine vacuum to be applied to the EVAP canister.
With the normally open EVAP vent solenoid valve OFF, fresh air is drawn through the vent solenoid valve and
the vent hose to the EVAP canister. Fresh air is drawn through the canister, pulling fuel vapors from the carbon.
The air/fuel vapor mixture continues through the EVAP purge tube and EVAP purge solenoid valve into the
intake manifold to be consumed during normal combustion. The ECM uses several tests to determine if the
EVAP system is leaking or restricted.

Purge Solenoid Valve Leak Test

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If the EVAP purge solenoid valve does not seal properly fuel vapors could enter the engine at an undesired
time, causing driveability concerns. The ECM tests for this by commanding the EVAP purge solenoid valve
OFF and the vent solenoid valve ON which seals the system. With the engine running, the ECM then monitors
the fuel tank pressure (FTP) sensor for an increase in vacuum. The ECM will log a fault if a vacuum develops in
the tank under these test conditions.

Large Leak Test

This diagnostic creates a vacuum condition in the EVAP system. When the enabling criteria has been met, the
ECM commands the normally open EVAP vent solenoid valve closed and the EVAP purge solenoid valve
open, creating a vacuum in the EVAP system. The ECM then monitors the FTP sensor voltage to verify that the
system is able to reach a predetermined level of vacuum within a set amount of time. Failure to achieve the
expected level of vacuum indicates the presence of a large leak in the EVAP system or a restriction in the purge
path. The ECM will log a fault if it detects a weaker than expected vacuum level under these test conditions.

Canister Vent Restriction Test

If the EVAP vent system is restricted, fuel vapors will not be properly purged from the EVAP canister. The
ECM tests this by commanding the EVAP purge solenoid valve ON while commanding the EVAP vent
solenoid valve OFF, and then monitoring the FTP sensor for an increase in vacuum. If the vacuum increases
more than the expected amount, in a set amount of time, a fault will be logged by the ECM.

Small Leak Test

The engine off natural vacuum diagnostic is the small-leak detection diagnostic for the EVAP system. The
engine off natural vacuum diagnostic monitors the EVAP system pressure with the ignition OFF. Because of
this, it may be normal for the ECM to remain active for up to 40 min after the ignition is turned OFF. This is
important to remember when performing a parasitic draw test on vehicles equipped with engine off natural
vacuum.

When the vehicle is driven, the temperature rises in the tank due to heat transfer from the exhaust system. After
the vehicle is parked, the temperature in the tank continues to rise for a period of time, then starts to drop. The
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engine off natural vacuum diagnostic relies on this temperature change, and the corresponding pressure change
in a sealed system, to determine if an EVAP system leak is present.

The engine off natural vacuum diagnostic is designed to detect leaks as small as 0.51 mm (0.020 in).

EVAP System Components

The EVAP system consists of the following components:

EVAP Purge Solenoid Valve

The EVAP purge solenoid valve controls the flow of vapors from the EVAP system to the intake manifold. The
purge solenoid valve opens when commanded ON by the ECM. This normally closed valve is pulse width
modulated (PWM) by the ECM to precisely control the flow of fuel vapor to the engine. The valve will also be
opened during some portions of the EVAP testing when the engine is running, allowing engine vacuum to enter

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the EVAP system.

Purge Tube Check Valve

Turbocharged vehicles have a check valve in the purge tube between the EVAP purge solenoid valve and the
EVAP canister to prevent pressurization of the EVAP system under boost conditions. Note that the presence of
this one-way check valve prevents pressure testing the EVAP system for leaks at the EVAP canister purge tube
connector.

EVAP Canister

The canister is filled with carbon pellets used to absorb and store fuel vapors. Fuel vapor is stored in the canister
until the ECM determines that the vapor can be consumed in the normal combustion process.

Vapor Recirculation Tube

A vapor path between the fuel fill pipe and the vapor tube to the carbon canister is necessary for Vehicle
Onboard Diagnostics to fully diagnose the EVAP system. It also accommodates service diagnostic procedures
by allowing the entire EVAP system to be diagnosed from either end of the system.

Fuel Tank Pressure Sensor

The FTP sensor measures the difference between the pressure or vacuum in the fuel tank and outside air
pressure. The ECM provides a 5 V reference and a ground to the FTP sensor. Depending on the vehicle, the
sensor can be located in the vapor space on top of the fuel tank, in the vapor tube between the canister and the
tank, or on the EVAP canister. The FTP sensor provides a signal voltage back to the ECM that can vary
between 0.1-4.9 V. A high FTP sensor voltage indicates a low fuel tank pressure or vacuum. A low FTP sensor
voltage indicates a high fuel tank pressure.

Fuel Fill Pipe Check Valve

The check valve on the fuel fill pipe is there to prevent spit-back during refueling.
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EVAP Vent Solenoid Valve

The EVAP vent solenoid valve controls fresh airflow into the EVAP canister. The valve is normally open. The
canister vent solenoid valve is closed only during EVAP system tests performed by the ECM.

Fuel Fill Cap

The fuel fill cap is equipped with a seal and a vacuum relief valve.

Capless Fuel Fill

Some vehicles may have a capless fuel fill design behind a locking fuel door. There is no fuel fill cap to
remove. One just fully inserts the fuel nozzle into the fill neck, making sure it latches before refueling. Flapper
valves close to seal this interface once the fill nozzle is removed.

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FUEL SYSTEM DESCRIPTION

Fuel System Overview

The fuel system is an electronic returnless on-demand design. A returnless fuel system reduces the internal
temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Reducing the internal
temperature of the fuel tank results in lower evaporative emissions.

The fuel tank stores the fuel supply. An electric turbine style fuel pump attaches to the fuel tank fuel pump
module inside the fuel tank. The fuel pump supplies fuel through the fuel feed pipe to the fuel injection system.
The fuel tank fuel pump module contains a reverse flow check valve. The check valve maintains fuel pressure
in the fuel feed pipe and the fuel rail in order to prevent long cranking times.

Electronic Returnless Fuel System

The electronic returnless fuel system is a microprocessor controlled fuel delivery system which transports fuel
from the tank to the fuel rail. It functions as an electronic replacement for a traditional, mechanical fuel pressure
regulator. A pressure relief regulator valve within the fuel tank provides an added measure of over pressure
protection. Desired fuel pressure is commanded by the engine control module (ECM), and transmitted to the
fuel pump flow control module via a GMLAN serial data message. A liquid fuel pressure sensor provides the
feedback the fuel pump flow control module requires for Closed Loop fuel pressure control.

Fuel Pump Flow Control Module

The fuel pump flow control module is a serviceable GMLAN module. The fuel pump flow control module
receives the desired fuel pressure message from the engine control module (ECM) and controls the fuel pump
located within the fuel tank to achieve the desired fuel pressure. The fuel pump flow control module sends a 25
kHz PWM signal to the fuel pump, and pump speed is changed by varying the duty cycle of this signal.
Maximum current supplied to the fuel pump is 15 A. A liquid fuel pressure sensor provides fuel pressure
feedback to the fuel pump flow control module.

Fuel Pressure Sensor

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The fuel pressure sensor is a serviceable 5 V, 3-pin device. It is located on the fuel feed line forward of the fuel
tank, and receives power and ground from the fuel pump flow control module through a vehicle wiring harness.
The sensor provides a fuel pressure signal to the fuel pump flow control module, which is used to provide
Closed Loop fuel pressure control.

Fuel Tank

The fuel tank stores the fuel supply. The fuel tank is located in the rear of the vehicle. The fuel tank is held in
place by 2 metal straps that are attached to the underbody. The fuel tank is molded from high-density
polyethylene.

Fuel Filler Cap

The fuel fill pipe has a tethered fuel filler cap. A torque-limiting device prevents the cap from being
overtightened. To install the cap, turn the cap clockwise until the cap clicks audibly. This indicates that the cap

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is correctly torqued and fully seated.

Fuel Tank Fuel Pump Module

The fuel tank fuel pump module consists of the following components:

 The fuel level sensor

 The fuel pump
 The fuel strainer
 The pressure relief regulator valve
 The jet pump

Fuel Level Sensor

The fuel level sensor consists of a float, a wire float arm, and a ceramic resistor card. The position of the float
arm indicates the fuel level. The fuel level sensor contains a variable resistor which changes resistance in
correspondence with the position of the float arm. The ECM sends the fuel level signal via a High Speed CAN-
Bus signal to the body control module (BCM). The BCM then sends the information via a Low Speed CAN-
Bus signal to the instrument cluster to display the fuel level. When the fuel level falls below 11% the instrument
cluster illuminates the low fuel level indicator. The ECM also monitors the fuel level input for various
diagnostics.

Fuel Pump

The fuel pump is mounted in the fuel tank fuel pump module reservoir. The fuel pump is an electric pump. Fuel
is pumped to the fuel injection system at a pressure that is based on feedback from the fuel pressure sensor. The
fuel pump delivers a constant flow of fuel even during low fuel conditions and aggressive vehicle maneuvers.
The fuel pump flex pipe acts to dampen the fuel pulses and noise generated by the fuel pump.

Fuel Strainer

The fuel strainer is attached to the lower end of the fuel tank fuel pump module. The fuel strainer is made of
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woven plastic. The functions of the fuel strainer are to filter contaminants and to wick away fuel. Normally, the
fuel strainer does not require maintenance. Fuel stoppage at this point indicates that the fuel tank contains an
abnormal amount of sediment or contamination.

Jet Pump

The jet pump is located in the fuel tank fuel pump module. Fuel pump flow loss, caused by vapor expulsion in
the pump inlet chamber, is diverted to the jet pump through a restrictive orifice located on the pump cover. The
jet pump fills the reservoir of the fuel tank fuel pump module.

Pressure Relief Regulator Valve

The pressure relief regulator valve replaces the typical fuel pressure regulator used on a mechanical returnless
fuel system. The pressure relief regulator valve is closed during normal vehicle operation. The pressure relief
regulator valve is used to vent pressure during hot soaks and also functions as a fuel pressure regulator in the

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event of the fuel pump flow control module defaulting to 100% pulse width modulation (PWM) of the fuel
pump. Due to variation in the fuel system pressures, the opening pressure for the pressure relief regulator valve
is set higher than the pressure that is used on a mechanical returnless fuel system pressure regulator.

Nylon Fuel Pipes

WARNING: Refer to Fuel and Evaporative Emission Pipe Warning .

Nylon pipes are constructed to withstand maximum fuel system pressure, exposure to fuel additives, and
changes in temperature.

Heat resistant rubber hose or corrugated plastic conduit protect the sections of the pipes that are exposed to
chafing, high temperature, or vibration.

Nylon fuel pipes are somewhat flexible and can be shaped around gradual turns under the vehicle. However, if
nylon fuel pipes are forced into sharp bends, the pipes may kink and restrict the flow of fuel. Also, once
exposed to fuel, nylon pipes may become stiffer and are more likely to kink if bent too far. Exercise special care
when working on a vehicle with nylon fuel pipes.

Quick-Connect Fittings

Nylon fuel pipes are somewhat flexible and can be shaped around gradual turns under the vehicle. However, if
nylon fuel pipes are forced into sharp bends, the pipes may kink and restrict the flow of fuel. Also, once
exposed to fuel, nylon pipes may become stiffer and are more likely to kink if bent too far. Exercise special care
when working on a vehicle with nylon fuel pipes.

Fuel Rail Assembly

The fuel rail assembly is attached to the engine intake manifold. The fuel rail assembly performs the following
functions:
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 Positions the injectors in the intake manifold

 Distributes fuel evenly to the injectors

Fuel Injectors

The fuel injector assembly is a solenoid device controlled by the ECM that meters pressurized fuel to a single
engine cylinder. The ECM energizes the high-impedance, 12 ohms, injector solenoid to open a ball valve,
normally closed. This allows fuel to flow into the top of the injector, past the ball valve, and through a director
plate at the injector outlet. The director plate has machined holes that control the flow of fuel, generating a
spray of finely atomized fuel at the injector tip. Fuel from the injector tip is directed at the intake valve, causing
the fuel to become further atomized and vaporized before entering the combustion chamber. This fine
atomization improves fuel economy and emissions.

Fuel Metering Modes of Operation

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The ECM monitors voltages from several sensors in order to determine how much fuel to feed to the engine.
The ECM controls the amount of fuel delivered to the engine by changing the fuel injector pulse width. The fuel
is delivered under one of several modes.

Starting Mode

The ECM supplies voltage to the fuel pump control module when the ECM detects that the ignition is ON. The
voltage from the ECM to the fuel pump control module remains active for 2 s, unless the engine is in Crank or
Run. While this voltage is being received, the fuel pump control module closes the ground switch of the fuel
tank fuel pump module and also supplies a varying voltage to the fuel tank fuel pump module in order to
maintain the desired fuel line pressure. The ECM calculates the air/fuel ratio based on inputs from the engine
coolant temperature (ECT), manifold absolute pressure (MAP), mass air flow (MAF), and throttle position
sensors. The system stays in starting mode until the engine speed reaches a predetermined RPM.

Clear Flood Mode

If the engine is flooded with fuel during starting and will not start, the clear flood mode can be manually
enabled. To enable Clear Flood Mode, press the accelerator to wide open throttle (WOT). The ECM will
completely turn OFF the fuel injectors and will maintain this mode as long as the ECM detects a WOT
condition with engine speed below a predetermined value.

Run Mode

The run mode has 2 conditions called Open Loop and Closed Loop. When the engine is first started and the
engine speed is above a predetermined RPM, the system begins Open Loop operation. The ECM ignores the
signal from the heated oxygen sensor (HO2S). The ECM calculates the air/fuel ratio based on inputs from the
engine coolant temperature (ECT), manifold absolute pressure (MAP), mass air flow (MAF), and throttle
position sensors. The system stays in Open Loop until meeting the following conditions:

 The HO2S has varying voltage output, showing that the HO2S is hot enough to operate properly.
 The ECT sensor is above a specified temperature.
 A specific amount of time has elapsed after starting the engine.
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Specific values for the above conditions exist for each different engine, and are stored in the electrically
erasable programmable read-only memory (EEPROM). The system begins Closed Loop operation after
reaching these values. In Closed Loop, the ECM calculates the air/fuel ratio, injector ON time, based upon the
signal from various sensors, but mainly from the HO2S. This allows the air/fuel ratio to stay very close to
14.7:1.

Acceleration Mode

When the driver pushes on the accelerator pedal, air flow into the cylinders increases rapidly. To prevent
possible hesitation, the ECM increases the pulse width to the injectors to provide extra fuel during acceleration.
This is also known as power enrichment. The ECM determines the amount of fuel required based upon throttle
position, engine coolant temperature (ECT), manifold absolute pressure (MAP), mass air flow (MAF), and
engine speed.

Deceleration Mode

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When the driver releases the accelerator pedal, air flow into the engine is reduced. The ECM monitors the
corresponding changes in throttle position, mass air flow (MAF), and manifold absolute pressure (MAP). The
ECM shuts OFF fuel completely if the deceleration is very rapid, or for long periods, such as long, closed-
throttle coast-down. The fuel shuts OFF in order to prevent damage to the catalytic converters.

Battery Voltage Correction Mode

When the battery voltage is low, the ECM compensates for the weak spark delivered by the ignition system in
the following ways:

 Increasing the amount of fuel delivered

 Increasing the idle RPM
 Increasing the ignition dwell time

Fuel Cutoff Mode

The ECM cuts OFF fuel from the fuel injectors when the following conditions are met in order to protect the
powertrain from damage and improve driveability:

 The ignition is OFF. This prevents engine run-on.

 The ignition is ON but there is no ignition reference signal. This prevents flooding or backfiring.
 The engine speed is too high, above red line.
 The vehicle speed is too high, above rated tire speed.
 During an extended, high speed, closed throttle coast down-This reduces emissions and increases engine
braking.
 During extended deceleration, in order to prevent damage to the catalytic converters

Fuel Trim

The ECM controls the air/fuel metering system in order to provide the best possible combination of driveability,
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

fuel economy, and emission control. The ECM monitors the heated oxygen sensor (HO2S) signal voltage while
in Closed Loop and regulates the fuel delivery by adjusting the pulse width of the injectors based on this signal.
The ideal fuel trim values are around 0 percent for both short and long term fuel trim. A positive fuel trim value
indicates the ECM is adding fuel in order to compensate for a lean condition by increasing the pulse width. A
negative fuel trim value indicates that the ECM is reducing the amount of fuel in order to compensate for a rich
condition by decreasing the pulse width. A change made to the fuel delivery changes the long and short term
fuel trim values. The short term fuel trim values change rapidly in response to the HO2S signal voltage. These
changes fine tune the engine fueling. The long term fuel trim makes coarse adjustments to fueling in order to re-
center and restore control to short term fuel trim. A scan tool can be used to monitor the short and long term
fuel trim values. The long term fuel trim diagnostic is based on an average of several of the long term speed
load learn cells. The ECM selects the cells based on the engine speed and engine load. If the ECM detects an
excessively lean or rich condition, the ECM will set a fuel trim diagnostic trouble code (DTC).

KNOCK SENSOR SYSTEM DESCRIPTION

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Circuit/System Description

The knock sensor system enables the engine control module (ECM) to control the ignition timing for the best
possible performance while protecting the engine from potentially damaging levels of detonation. The ECM
uses the knock sensor system to test for abnormal engine noise that may indicate detonation, also known as
spark knock.

Sensor Description

This knock sensor system uses one or two flat response dual-wire sensors. The sensor uses piezo-electric crystal
technology that produces an alternating current (AC) voltage signal of varying amplitude and frequency based
on the engine vibration or noise level. The amplitude and frequency are dependant upon the level of knock that
the knock sensor detects. The ECM receives the knock sensor signal through 2 isolated signal circuits.

If the ECM has determined that knock is present, it will retard the ignition timing to attempt to reduce the
knock. The ECM is capable of controlling spark retard on an individual cylinder basis. The ECM will always
try to work back to a zero compensation level, or no spark retard. knock sensor diagnostics are calibrated to
detect faults with the knock sensor circuitry inside the ECM, the knock sensor wiring, or the knock sensor
voltage output. Some diagnostics are also calibrated to detect constant noise from an outside influence such as a
loose/damaged component or excessive mechanical engine noise.

THROTTLE ACTUATOR CONTROL (TAC) SYSTEM DESCRIPTION

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Fig. 3: Throttle Actuator Control (TAC) System
Courtesy of GENERAL MOTORS COMPANY

The engine control module (ECM) is the control center for the throttle actuator control (TAC) system. The
ECM determines the driver's intent based on input from the accelerator pedal position sensors, then calculates
the appropriate throttle response based on the throttle position sensors. The ECM achieves throttle positioning
by providing a pulse width modulated voltage to the throttle actuator motor. The throttle blade is spring loaded
in both directions, and the default position is slightly open.

Modes Of Operation

Normal Mode

During the operation of the TAC system, several modes, or functions, are considered normal. The following
modes may be entered during normal operations:

 Minimum pedal value-At key-up, the ECM updates the learned minimum pedal value.
 Minimum throttle position values-At key-up, the ECM updates the learned minimum throttle position
value. In order to learn the minimum throttle position value, the throttle blade is moved to the Closed
position.
 Ice break mode-If the throttle blade is not able to reach a predetermined minimum throttle position, the
ice break mode is entered. During the ice break mode, the ECM commands the maximum pulse width
several times to the throttle actuator motor in the closing direction.
 Minimum pedal value-At key-up, the ECM updates the learned minimum pedal value.
 Battery saver mode-After a predetermined time without engine RPM, the ECM commands the Battery
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

Saver mode. During the Battery Saver mode, the TAC module removes the voltage from the motor
control circuits, which removes the current draw used to maintain the idle position and allows the throttle
to return to the spring loaded default position.

Reduced Engine Power Mode

When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode.
Reduced engine power may cause one or more of the following conditions:

 Acceleration limiting-The ECM will continue to use the accelerator pedal for throttle control, however,
the vehicle acceleration is limited.
 Limited throttle mode-The ECM will continue to use the accelerator pedal for throttle control, however,
the maximum throttle opening is limited.
 Throttle default mode-The ECM will turn OFF the throttle actuator motor, and the throttle will return to

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the spring loaded default position.
 Forced idle mode-The ECM will perform the following actions:
 Limit engine speed to idle positioning the throttle position, or by controlling the fuel and spark if
the throttle is turned OFF.
 Ignore the accelerator pedal input.

 Engine shutdown mode-The ECM will disable fuel and de-energize the throttle actuator.

TURBOCHARGER SYSTEM DESCRIPTION

Fig. 4: Turbocharger System Description Diagram

Courtesy of GENERAL MOTORS COMPANY
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

Callout Component Name

1 Turbocharger Bypass Solenoid Valve
2 Multifunction Intake Air Sensor
3 Turbocharger Wastegate Regulator Solenoid Valve
4 Turbocharger
5 Turbocharger Bypass Valve
6 Turbocharger Wastegate Actuator
7 Engine Exhaust Manifold
8 Manifold Absolute Pressure (MAP) Sensor
9 Vacuum Tank (Integral to Intake Manifold)
10 Intake Manifold
11 Throttle Body
12 Intake Air (Boost) Pressure and Temperature Sensor

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13 Charge Air Cooler
14 Engine Control Module (ECM)

Turbocharger Description and Operation

A turbocharger is a forced induction device used for increasing power output of an internal combustion engine.
By using the exhaust gas forces to compress intake air, a turbocharged engine is more powerful and efficient
than a naturally aspirated engine with the same displacement. The dual-scroll turbocharger is mounted on the
exhaust manifold and the lightweight turbine is driven by the waste energy generated by the flow of the exhaust
gases. The turbine is connected by a shaft to the compressor which is mounted in the induction system of the
engine. The compressor vanes compress the intake air above atmospheric pressure, thereby greatly increasing
the density of the air entering the engine.

The turbocharger incorporates a wastegate that is controlled by the ECM, by means of a pulse width modulated
(PWM) solenoid, to regulate the pressure ratio of the compressor. An integral turbocharger bypass valve,
controlled by the ECM through a remotely mounted solenoid, is used to prevent compressor surging and
damage by opening during abrupt closed throttle conditions. The bypass valve opens during closed throttle
deceleration conditions, which allows the air to recirculate in the turbocharger and maintain compressor speed.
During a wide open throttle command, the bypass valve closes to optimize turbo response.

The turbocharger is connected to the engine oiling system by a supply and drain tube and synthetic oil is
installed at the factory. Synthetic oil is required for its friction-reducing capabilities and high-temperature
performance. There is a cooling system circuit in the turbocharger that utilizes the engine coolant to further
reduce operating temperatures.

Turbocharger Wastegate Solenoid Valve

The wastegate valve opens and closes a bypass passage beside the turbine wheel. A spiral spring works in the
closing direction while the pressure in the diaphragm works in the opening direction. The ECM supplies a
PWM signal to the solenoid valve, which then allows pressure from the turbo to come through. When the
pressure overcomes the spring force the actuator rod begins to move, opening the wastegate valve to a
corresponding degree. The ECM changes wastegate valve opening by varying the PWM signal, which regulates
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the turbine speed.

At low loads, the wastegate valve is closed. All the exhaust gas then passes through the turbine. At high loads,
the volume of exhaust gas is greater, which makes the turbine wheel rotate faster. This delivers a greater air
displacement to the engine.

When the air displacement becomes so large that the current air mass per combustion cannot be controlled with
the throttle alone, the turbo must be regulated. This is done by opening the wastegate valve so that some of the
exhaust gas passes through the wastegate. Consequently, this gas does not contribute to driving the turbine and
the turbine speed will be regulated so that the turbo air displacement will be correct.

When certain DTCs are set the ECM will limit the amount of available boost pressure. Limiting boost pressure
is accomplished by the ECM controlling the wastegate actuator solenoid valve and maintaining the duty cycle at
0 %. This means that the ECM will not actively close the wastegate during greater engine loads. The system at
this point is limited to mechanical boost. Mechanical boost means that the wastegate will still move, but the

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amount of motion is limited by the mechanical properties of the return spring within the diaphragm valve, the
pneumatic properties of the actuator, and the physics of the exhaust gas flow in the exhaust system.

The turbocharger wastegate diaphragm valve assembly has a threaded rod and nut that connects the diaphragm
of the valve to the wastegate. This rod is adjusted to factory specifications and is not adjustable.

The following diagrams illustrate the turbocharger wastegate closed and open conditions:

Turbocharger Wastegate Closed

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Fig. 5: TC Wastegate Closed
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

Turbocharger Wastegate Actuator Solenoid Valve with Duty Cycle
1
at 100 percent
2 Compressor
3 Turbine
4 Exhaust Gas Pressure
5 Spring Force
6 Turbocharger Wastegate Diaphragm Valve

Turbocharger Wastegate Open

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

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Fig. 6: TC Wastegate Open
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

Turbocharger Wastegate Actuator Solenoid Valve with Duty Cycle
1
at 0 percent
2 Compressor
3 Turbine
4 Regulating Pressure
5 Exhaust Gas Pressure
6 Spring Force
7 Turbocharger Wastegate Diaphragm Valve

The wastegate is completely closed at idle. All of the exhaust energy is passing through the turbine.

During normal operation, when wide open throttle is requested at lower engine speeds, the ECM commands the
wastegate solenoid with a duty cycle of 100 % to minimize any turbo lag. During engine loads in the middle
and upper RPM ranges, the ECM commands the solenoid with a duty cycle of about 65 %.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Description and Operation - Cruze

Turbocharger Bypass Solenoid Valve

The turbocharger bypass valve prevents the turbo from exceeding the pump limit at low flow and high pressure.
This occurs when the engine is running with a load and the throttle suddenly closes. In this case, flow is almost
null and pressure is very high. This not only is damaging to the turbocharger, but also generates noise and
decelerates turbine speed. The ECM supplies a voltage signal to the solenoid valve output driver, which
regulates the open or closed valve position.

Accelerator Pedal Depressed

The bypass valve is closed. The force in the return spring integrated in the valve presses the valve cone against
its seat in the turbo housing. The valve is turned OFF.

Accelerator Pedal Released

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In order to avoid pressure spikes in the intake manifold and unloading or overrunning the turbo, the ECM sends
a voltage signal to the bypass valve, which will then open. The compressed air on the pressure side of the turbo
is led to the intake via the open valve. When the pressure drops, the turbine speed can be kept relatively high
and the turbocharger is prevented from exceeding the pump limit.

Charge Air Cooler

The turbocharger is supported by an air-to-air charge air cooler system, which uses fresh air drawn through a
heat exchanger to reduce the temperature of the warmer compressed air forced through the intake system. Inlet
air temperature can be reduced by up to 100°C (180°F), which enhances performance. This is due to the higher
density of oxygen in the cooled air, which promotes optimal combustion. The charge air cooler is connected to
the turbocharger and to the throttle body by flexible ductwork that requires the use of special high torque
fastening clamps. In order to prevent any type of air leak when servicing the ductwork, the tightening
specifications and proper positioning of the clamps is critical, and must be strictly adhered to.
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2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DIAGNOSTIC INFORMATION AND PROCEDURES

DTC P0010, P0013, OR P2088-P2091

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

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DTC Descriptors

DTC P0010

Intake Camshaft Position Actuator Solenoid Valve Control Circuit

DTC P0013

Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit

DTC P2088

Intake Camshaft Position Actuator Solenoid Control Circuit Low Voltage

DTC P2089

Intake Camshaft Position Actuator Solenoid Control Circuit High Voltage

DTC P2090

Exhaust Camshaft Position Actuator Solenoid Control Circuit Low Voltage

DTC P2091

Exhaust Camshaft Position Actuator Solenoid Control Circuit High Voltage

Diagnostic Fault Information

Short to Short to
Circuit Ground High Resistance Open Voltage Signal Performance

Camshaft Position P0010, P0010, P0013 P0010, P0011, P0014

Actuator Solenoid Valve P0013, P0010, P0013,
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

High Control P2088, P0013 P2089,

P2090 P2091
Camshaft Position
P0010,
Actuator Solenoid Valve - P0010, P0013 - -
P0013
Low Reference

Circuit/System Description

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the
camshafts while the engine is operating. The Camshaft Position Actuator Solenoid Valve signal from the ECM
is pulse width modulated (PWM). The ECM controls the Camshaft Position Actuator Solenoid Valve duty cycle
by controlling the amount of solenoid valve ON time. The Camshaft Position Actuator Solenoid Valve controls
the advance or the retard of each camshaft. The Camshaft Position Actuator Solenoid Valve controls the oil
flow that applies the pressure to advance or retard the camshafts.

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The ECM controls the Camshaft Position Actuator Solenoid Valve by suppling a 12 V pulse width modulated
(PWM) signal. The ECM supplies a ground to the low reference circuit.

Conditions for Running the DTC

 The ignition voltage is greater than 11 V

 The ignition switch is in the crank or run position.
 The ECM has commanded the Camshaft Position Actuator Solenoid Valve ON.
 The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match
for greater than 5 seconds.

Action Taken When the DTC Sets

DTCs P0010, P0013, P2088, P2089, P2090 and P2091 are type B DTCs.

Conditions for Clearing the DTC

DTCs P0010, P0013, P2088, P2089, P2090 and P2091 are type B DTCs.

Diagnostic Aids

If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while
monitoring the scan tool Circuit Test Status parameters for the component. The Circuit Test Status parameters
change from OK or Not Run to Malfunction if there is a condition with the circuit or a connection.

Reference Information

Schematic Reference
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Camshaft Actuator System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs

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 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: If a crankshaft or camshaft position sensor DTC is set, the Camshaft

Position Actuator output control will not function.

1. Ignition ON.
2. Verify DTC P0335, P0336, P0340, and P0341 is not set.
 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If none of the DTCs are set

3. Verify the scan tool parameters listed below do not display Malfunction:
 Camshaft Position Actuator Solenoid Valve Control Circuit Open test status

 Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status

 Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If Malfunction is not displayed

4. Engine idling at normal operating temperature.
5. Verify the scan tool parameters listed below do not display Malfunction when commanding the
appropriate scan tool Camshaft Position Actuator from 0-10° and back to 0° with a scan tool:
 Camshaft Position Actuator Solenoid Valve Control Circuit Open test status

 Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status

 Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not displayed

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6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
7. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate Q6
Camshaft Position Actuator Solenoid Valve. It may take up to 2 minutes for all vehicle systems to power
down.
2. Test for less than 5 ohms between the low reference circuit terminal 1and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.

NOTE: A test lamp must be used for this test. The control circuit is pulled-up to a
low current voltage. The current is too low to illuminate a test lamp. A
voltage on the control circuit is normal.

4. Verify that a test lamp does not illuminate between the control circuit terminal 2and ground.
 If the test lamp illuminates
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

5. Remove the test lamp.

6. Verify the scan tool parameters listed below do not display Malfunction when commanding the Camshaft
Position Actuator Solenoid Valve ON with a scan tool:
 Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status

 Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status

 Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status

 Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status

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 If Malfunction is displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance or short to ground in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If Malfunction is not displayed

7. Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.

Component Testing

1. Ignition OFF, disconnect the harness connector at the Q6 Camshaft Position Actuator Solenoid Valve.
2. Test for 7-12 ohms between the control terminal 2 and the low reference terminal 1.
 If not between 7-12 ohms

Replace the Q6 Camshaft Position Actuator Solenoid Valve.

If between 7-12 ohms

3. Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve
housing.
 If not infinite resistance

Replace the Q6 Camshaft Position Actuator Solenoid Valve.

If infinite resistance


4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Camshaft Position Actuator Solenoid Valve Replacement

 Control Module References for Engine Control Module replacement, programming and setup.

DTC P0011 OR P0014

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0011

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Intake Camshaft Position System Performance

DTC P0014

Exhaust Camshaft Position System Performance

Diagnostic Fault Information

Short to Short to
Circuit Ground High Resistance Open Voltage Signal Performance
P0010, P0010,
Camshaft Position
P0013, P0010, P0013,
Actuator Solenoid Valve P0010, P0013 P0011, P0014
P2088, P0013 P2089,
High Control
P2090 P2091
Camshaft Position
P0010,
Actuator Solenoid Valve - P0010, P0013 - -
P0013
Low Reference

Circuit/System Description

The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of
the camshafts while the engine is operating. The camshaft position actuator solenoid valves are operated
hydraulically in order to change the angle of the camshaft relative to crankshaft position. The camshaft position
actuator solenoid valves are controlled by the engine control module (ECM). The ECM sends a pulse width
modulated signal to the camshaft position actuator solenoid valves. The camshaft position actuator solenoid
valves control the amount of engine oil flow that applies the pressure to advance or retard the camshafts.

Conditions for Running the DTC

 DTC P0010, P0013, P0016, P0017, P0335, P0340, P0341, P0365, or P0366 is not set.
 The engine is running.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The ignition voltage is between 11-32 V.

 The camshaft position actuator is enabled.
 The rate of change in the camshaft position is less than 3° for 4 s.
 DTCs P0011 and P0014 runs continuously once the above conditions are met for greater than 0.1 s.

Conditions for Setting the DTC

The ECM detects a difference between the camshaft position angle and the desired camshaft position angle is
greater than 6 to 10° based on engine coolant temperature and engine speed.

Action Taken When the DTC Sets

DTCs P0011 and P0014 are Type B DTCs.

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Conditions for Clearing the DTC

DTCs P0011 and P0014 are Type B DTCs.

Diagnostic Aids

 The engine oil condition has a major impact on the camshaft actuator system.
 A low oil level condition may set this DTC. The engine may require an oil change. Inquire with the
customer when the last oil change was performed. You may also monitor the scan tool Engine Oil Life
Remaining parameter. Advise the customer an oil change may be required.
 Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft
actuator, or timing belt can cause this DTC to set.
 A resistance greater than 8 ohms on the camshaft position actuator solenoid valve control circuit may set
this DTC. If you suspect high resistance, ground the control circuit while the engine is idling. The scan
tool Intake or Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test
Status should display Malfunction. If the parameter displays OK, test the control circuit for high
resistance.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Camshaft Actuator System Description

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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Circuit/System Verification

NOTE:  The engine oil level and the oil pressure are critical to the correct
operation of the camshaft position actuator system. Verify that the
engine has the correct oil level and the correct oil pressure before
continuing with this diagnostic.
 The engine oil condition has a major impact on the camshaft actuator
system. Debris in the oil can interfere with the camshaft position
actuator solenoid and the mechanical camshaft actuator operation.
Inspect for dirty or degraded crankcase oil. The engine may require
an oil change. Inquire with the customer when the last oil change was
performed. You may also monitor the scan tool Engine Oil Life
Remaining parameter. Advise the customer an oil change may be
required.

1. Ignition ON.
2. Verify the correct engine oil pressure. Refer to Oil Pressure Diagnosis and Testing
 If the oil level and the oil pressure are not correct

Repair as necessary

 If the oil level and the oil pressure are correct

NOTE: If a crankshaft or camshaft position sensor DTC is set, the scan tool
Camshaft Position Actuator output control will not function.

3. Verify DTC P0010, P0013, P0016, P0017, P0335, P0336, P0340, P0341, P0365, P0366, P2088, P2089,
P2090 or P2091 is not set.
 If any of the DTCs are set
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If none of the DTCs are set

4. Engine idling.
5. Verify the scan tool parameters are less than 2° in each of the commanded states when commanding the
Camshaft Position Actuator from 0-20° and back to 0° with the scan tool.
 Intake Camshaft Position Variance

 Exhaust Camshaft Position Variance

 If 2° or greater

Refer to Circuit/System Testing below.

If less than 2°

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6. Verify that DTC P0011 or P0014 is not set.
 If any of the DTCs are set

Refer to Circuit/System Testing below.

If none of the DTCs set

7. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
8. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



9. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator
Solenoid Valve. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between the low reference circuit terminal 1 and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

NOTE: A test lamp must be used for this test. The control circuit is pulled-up to a
low current voltage, 1.5-4.5 V on the control circuit is normal.

4. Verify that a test lamp does not illuminate between the control circuit terminal 2 and ground.
 If the test lamp illuminates

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

5. Remove the test lamp.

6. Verify the scan tool parameters listed below do not display Malfunction when commanding the

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appropriate Camshaft Position Actuator Solenoid Valve ON with a scan tool.
 Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status

 Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status

 Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status

 Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status

 If Malfunction is displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance or short to ground in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If Malfunction is not displayed

7. Ignition OFF, remove the Q6 Camshaft Position Actuator Solenoid Valve.

8. Verify the conditions listed below do not exist with the Q6 Camshaft Position Actuator Solenoid Valve:
1. Torn, restricted, mis-positioned, or missing screens.
2. Engine oil leak between the oil sealing lands of the solenoid. Inspect the lands of the solenoid for
nicks.
3. Oil seepage at the solenoid connector.
 If a condition is found

Replace the Q6 Camshaft Position Actuator Solenoid Valve.

 If a condition is not found

NOTE: After swapping toe solenoids, install jumper wires to the appropriate
terminals of the harness connectors and the solenoids.

9. Ignition OFF, swap the Q6 Camshaft Position Actuator Solenoid Valve with the Q6 Camshaft Position
Actuator Solenoid Valve that is operating correctly.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

10. Engine idling.

11. Verify the scan tool Camshaft Position Variance parameter is less than 2° in each of the commanded
states when commanding the Camshaft Position Actuator from 0-20° and back to 0° with a scan tool.
 If 2° or greater

Replace the mechanical camshaft position actuator.

If less than 2°

12. Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.

Component Testing

1. Ignition OFF, disconnect the harness connector at the Q6 Camshaft Position Actuator Solenoid Valve.

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2. Test for 7-12 ohms between the control terminal 2 and the low reference circuit terminal 1.
 If not between 7-12 ohms

Replace the Q6 Camshaft Position Actuator Solenoid Valve.

If between 7-12 ohms

3. Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve
housing.
 If not infinite resistance

Replace the Q6 Camshaft Position Actuator Solenoid Valve.

If infinite resistance


4. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Camshaft Position Actuator Solenoid Valve Replacement

 Control Module References for ECM replacement, programming and setup

DTC P0016 OR P0017

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0016

Crankshaft Position - Intake Camshaft Position Not Plausible

DTC P0017

Crankshaft Position - Exhaust Camshaft Position Not Plausible

Circuit/System Description

The engine control module (ECM) uses the crankshaft position sensor, intake camshaft position sensor, and the
exhaust camshaft position sensor information to monitor the correlation between the crankshaft, intake
camshaft, and exhaust camshaft position.

Conditions for Running the DTC

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 DTCs P0335, P0336, P0340, P0341, P0365, P0366, P0641, or P0651 is not set
 The engine is running.
 The camshaft position actuator solenoid valves are in the parked position.

The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

The ECM detects a camshaft to crankshaft misalignment. The DTC sets if the crankshaft position sensor signal
is 10 degrees before or after the normal position in relation to the crankshaft angle while the engine is running.

Action Taken When the DTC Sets

DTCs P0016 and P0017 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0016 and P0017 are Type B DTCs.

Diagnostic Aids

The following conditions can also set the DTCs:

 A short to ground in a camshaft position actuator solenoid valve control circuit.

 Crankshaft end play out of specification.
 A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC).

Reference Information

Description and Operation

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Camshaft Actuator System Description

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0335, P0336, P0340, P0341, P0365, P0366, P0641 or P0651 is not set.

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 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If none of the DTCs are set

3. Engine Running at normal operating temperature.
4. Verify DTC P0016 or P0017 is not set.
 If the DTC is set

Inspect for the following and repair as necessary:

A Q6 Camshaft Position Actuator Solenoid Valve that is stuck in the full advance or retard
position.
 The correct installation of the Q6 Camshaft Position Actuator Solenoid Valves.

 The correct installation of the B23 Camshaft Position Sensors.

 The correct installation of the B26 Crankshaft Position Sensor.

 A timing chain tensioner condition.

 An incorrectly installed timing chain.

 Excessive play in the timing chain.

 A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the
crankshaft.
 If the DTC is not set

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify the DTC does not set.
 If the DTC sets

A mechanical condition listed above still exists.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If the DTC does not set



7. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Camshaft Position Actuator Solenoid Valve Replacement

 Camshaft Position Sensor Replacement
 Crankshaft Position Sensor Replacement
 Timing Chain Tensioner Replacement

DTC P0030-P0032, P0036-P0038, P0053, P0054, P0135, OR P0141

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Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptors

DTC P0030

HO2S Heater Control Circuit Sensor 1

DTC P0031

HO2S Heater Control Circuit Low Voltage Sensor 1

DTC P0032

HO2S Heater Control Circuit High Voltage Sensor 1

DTC P0036

HO2S Heater Control Circuit Sensor 2

DTC P0037

HO2S Heater Control Circuit Low Voltage Sensor 2

DTC P0038

HO2S Heater Control Circuit High Voltage Sensor 2

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0053

HO2S Heater Resistance Sensor 1

DTC P0054

HO2S Heater Resistance Sensor 2

DTC P0135

HO2S Heater Performance Sensor 1

DTC P0141

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HO2S Heater Performance Sensor 2

Diagnostic Fault Information

Short to Short to
Open
Circuit Ground High Resistance Voltage Signal Performance
P0030,
P0030,
P0036, P0030, P0036,
P0036,
P0102, P0132, P0134,
P0132,
P0132, P0135, P0138,
HO2S Heater Voltage P0134,
P0134, P0140, P0141, P0690 P0135, P0141
Supply P0135,
P0135, P0154, P0155,
P0138,
P0138, P0158, P0160,
P0140,
P0141, P0161
P0141
P0443, *
P0030,
P0032,
P0030, P0030,
P0036,
P0031, P0036,
P0038,
P0036, P0030, P0036, P0132,
P0132,
P0037, P0053, P0132, P0134,
HO2S Heater Control P0134, P0135, P0141
P0053, P0135, P0138, P0135,
P0135,
P0054, P0140, P0141 P0138,
P0138,
P0135, P0140,
P0140,
P0141 P0141
P0141,
P0690
*Opens Fuse

Typical Scan Tool Data

HO2S Sensor 1 Current/HO2S Sensor 2 Current

Circuit Short to Ground Open Short to Voltage
Parameter Normal Range: 0.2-1.5 A
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HO2S Heater Low Control 0A 0A 0A

HO2S Heater Voltage Supply 0A 0A 0.2-2 A

Circuit/System Description

Heated oxygen sensors (HO2S) are used for fuel control and post-catalyst monitoring. Each HO2S compares the
oxygen content of the surrounding air with the oxygen content in the exhaust stream. Each HO2S must reach
operating temperature to provide an accurate voltage signal. A heating element inside each of the HO2S
minimizes the time required for the sensor to reach operating temperature. Voltage is provided to the heater by
an ignition voltage circuit through a fuse. With the engine running, ground is provided to the heater by the
HO2S heater low control circuit, through a low side driver within the engine control module (ECM). The ECM
uses pulse-width modulation (PWM) to control the HO2S heater operation to maintain a specific HO2S
operating temperature range.

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Conditions for Running the DTC

P0030, P0031, P0032, P0036, P0037 and P0038

 The system voltage is between 11-32 V.

 The engine speed is greater than 400 RPM.
 The DTCs run continuously when the above conditions are met for greater than 5 s.

P0053 and P0054

 DTCs P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119 or P2610 are not set.
 The system voltage is less than 32 V.
 The ignition is OFF for greater than 8 h.
 The engine is running.
 The ECT is between -30 to +45°C (-22 to +113°F).
 The engine coolant temperature (ECT) and the intake air temperature (IAT) are within 8°C (14°F).
 The DTCs run once per valid cold start-up when the above conditions are met.

P0135 and P0141

 DTCs P0116, P0117, P0118, P0119 or P0128 are not set.

 The system voltage is between 10-32 V.
 The HO2S heaters are at operating temperature.
 The scan tool HO2S Heater device control is not active.
 The commanded HO2S heater duty cycle is greater than 0%.
 The DTCs run twice per drive cycle when the above conditions are met for greater than 30 s.

Conditions for Setting the DTC

P0030, P0031, P0032, P0036, P0037 and P0038

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match
for greater than 5 s.

P0053 and P0054

The ECM detects the HO2S heater is not within 7.5-13 ohms at engine start-up.

P0135 and P0141

The ECM detects the HO2S heater current is less than 0.30 A or greater than 2.5 A for greater than 8 s.

Action Taken When the DTC Sets

DTC P0030, P0031, P0032, P0036, P0037, P0038, P0053, P0054, P0135, and P0141 are Type B DTCs.

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Conditions for Clearing the DTC

DTC P0030, P0031, P0032, P0036, P0037, P0038, P0053, P0054, P0135, and P0141 are Type B DTCs.

Diagnostic Aids

 If the condition is intermittent, move the related harnesses and connectors, with the engine operating,
while monitoring the scan tool circuit status parameters for the component. The circuit status parameters
will change from OK or Not Run to Malfunction if there is a condition with the circuit or a connection.
 An open fuse in the HO2S heater circuit may be caused by the heater element in one of the sensors. The
condition may not be present until the sensor operates for a period of time. If no fault is present in the
heater circuit, monitor the amperage of each heater with a scan tool to determine if one of the heater
elements is the cause of the open fuse. Inspect the sensor pigtail or the harness for contacting the exhaust
system.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Engine idling.
2. Verify the parameters listed below do not display Malfunction.
 HO2S 1 or 2 Heater Control Circuit Low Voltage Test Status

 HO2S 1 or 2 Heater Control Circuit Open Test Status

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 HO2S 1 or 2 Heater Control Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not displayed

3. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



5. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B52 Heated Oxygen Sensor. Ignition
ON.
2. Verify that a test lamp illuminates between the ignition voltage circuit terminal 1 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF.
2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is OK and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp.

2. Test for infinite resistance between the ignition circuit and ground.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If less than infinite resistance, repair the short to ground on the circuit.
 If infinite resistance, test all components connected to the fuse and replace as necessary.

 If the test lamp illuminates

3. Verify that a test lamp does not illuminate between the ignition voltage circuit terminal 1 and the control
circuit terminal 2.
 If the test lamp illuminates

1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K20 Engine Control
Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

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4. Remove the test lamp.
5. Verify the scan tool HO2S 1 or 2 Heater Control Circuit High Voltage Test Status parameter is OK when
commanding the HO2S Heater Sensor 1 or 2 ON with a scan tool.
 If OK is not displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If OK is displayed

NOTE:  Less than 10 ohms of additional resistance on the ignition voltage

circuit, or control circuit may set a DTC. If there is a resistance on a
circuit, the driver will remain ON and the scan tool HO2S High
Voltage Test Status parameter will display OK.
 Performing this test may set additional DTCs.

6. Install a 10 A fused jumper wire between the control circuit terminal 2 and the ignition voltage circuit
terminal 1.

NOTE: This test may only be performed once per key cycle. If test is repeated,
ignition OFF, allow the engine control module to shut down completely,
then ignition ON.

7. Verify the scan tool HO2S 1 or 2 Heater Control Circuit High Voltage Test Status parameter is
Malfunction when commanding the HO2S Heater Sensor 1 or 2 ON with a scan tool.
 If Malfunction is not displayed

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module.
2. Test for less than 2 ohms in the control circuit end to end.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If 2 ohms or greater, repair the open/high resistance in the circuit.



 If less than 2 ohms, replace the K20 Engine Control Module.

 If Malfunction is displayed

8. Test or replace the B52 Heated Oxygen Sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B52 Heated Oxygen Sensor.
2. Test for 8-20 ohms between the ignition voltage circuit terminal 1 and the control circuit terminal 2.
 If not within the specified range, replace the B52 Heated Oxygen Sensor.

 If within the specified range

3. All OK.

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Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Heated Oxygen Sensor Replacement - Sensor 1

 Heated Oxygen Sensor Replacement - Sensor 2
 Perform the scan tool Heated Oxygen Sensor Resistance Learn Reset after replacing a HO2S.
 Control Module References for ECM replacement, programming and setup.

DTC P0033-P0035

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0033

Turbocharger Bypass Solenoid Valve Control Circuit

DTC P0034

Turbocharger Bypass Solenoid Valve Control Circuit Low Voltage

DTC P0035

Turbocharger Bypass Solenoid Valve Control Circuit High Voltage

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0030, P0033,
P0030, P0034, P0034, P0036,
P0036, P0134, P0134, P0135,
Ignition Voltage Circuit - -
P0135, P0245, P0140, P0141,
P0443, P0598* P0243, P0245,
P0443, P0597
P0010, P0013,
Control Circuit P0034 P0033 P0035, P0443, -
P0690
* Ignition fuse opens.

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Circuit/System Description

The turbocharger incorporates a wastegate that is controlled by a pressure differential, that is determined by the
engine control module (ECM) by means of a PWM solenoid valve, in order to regulate the pressure ratio of the
turbocharger. A turbocharger bypass valve also controlled by the ECM by utilizing a remotely mounted
solenoid valve is integrated into the bypass valve to prevent turbocharger surging and damage from vibrations
by opening during abrupt closed throttle conditions. When the valve is open during closed throttle deceleration
conditions, the bypass valve allows the air to recirculate in the turbocharger and maintain turbocharger speed.
Within a calibrated range during the closed throttle event, or upon a wide open throttle command the valve will
then close to optimize turbo response. The bypass solenoid valve has the following circuits:

 Ignition voltage
 Turbocharger bypass solenoid valve control

As engine load and engine speed increases, the turbocharger bypass solenoid valve remains commanded ON by
the ECM. As soon as the throttle closes the turbocharger bypass solenoid valve is commanded OFF by the
ECM, in order to allow the turbocharger bypass valve to open and allow the turbocharger air to recirculate,
there by preventing turbocharger surging.

Conditions for Running the DTC

 The engine is not cranking.

 The powertrain relay voltage is greater than 11 V.
 The run/crank voltage is greater than 6 V.
 The DTC run continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects an open, a short to ground, or a short to voltage on the turbocharger bypass solenoid valve
control circuit for greater than 1 s.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Action Taken When the DTC Sets

DTC P0033, P0034, P0035 are Type B DTCs.

Conditions for Clearing the DTC

DTC P0033, P0034, P0035 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

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COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, Verify the parameters listed below do not display Malfunction when commanding the
Turbocharger Bypass Solenoid Valve ON and OFF with a scan tool:
 Turbocharger Bypass Solenoid Valve Control Circuit Low Voltage Test Status

 Turbocharger Bypass Solenoid Valve Control Circuit Open Test Status

 Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status

 If Malfunction is displayed
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

If Malfunction is not displayed

2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
3. Verify a DTC does not set.
 If a DTC sets

Refer to Circuit/System Testing below

If a DTC does not set



4. All OK

Circuit/System Testing

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1. Ignition OFF, disconnect the harness connector at the Q40 Turbocharger Bypass Solenoid Valve. Ignition
ON.
2. Verify a test lamp illuminates between the ignition circuit terminal 2 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp.

NOTE: An internal short in any component supplied by the fuse may cause
the fuse to open and set a DTC when the component is activated.

2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, test all components connected to the ignition voltage circuit for a short
and replace as necessary.
 If the test lamp illuminates

3. Verify that a test lamp does not illuminate between the control circuit terminal 1 and the ignition circuit
terminal 2.
 If the test lamp illuminates

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module. Remove the
test lamp.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the test lamp does not illuminate

4. Remove the test lamp.
5. Verify the scan tool Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status
parameter is OK when commanding the Turbocharger Bypass Solenoid Valve Active with a scan tool.
 If OK is not displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If OK is displayed

6. Install a 3 A fused jumper wire between the control circuit terminal 1 and the ignition circuit terminal 2.
7. Verify the scan tool Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status

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parameter is Malfunction when commanding the Turbocharger Bypass Solenoid Valve Active with a scan
tool.
 If Malfunction is not displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If Malfunction is displayed

8. Test or replace the Q40 Turbocharger Bypass Solenoid Valve.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Charge Air Bypass Regulator Solenoid Valve Replacement

 Control Module References for ECM replacement, programming and setup

DTC P0068 OR P1101

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0068

Throttle Body Air Flow Performance

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P1101

Intake Air Flow System Performance

Circuit/System Description

The engine control module (ECM) compares actual airflow based on throttle position (TP) to a calculated
airflow based on manifold absolute pressure (MAP) sensor, and mass air flow (MAF).

Conditions for Running the DTC

DTC P0068

 The engine speed is at least 800 RPM.

The ignition voltage is at least 6.4 V.

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

 The DTC runs continuously when the above conditions are met.

DTC P1101

 DTC P0102, P0103, P0107, P0111, P0112, P0113, P0116, P0117, P0118, P0335, or P0336 is not set
 The engine speed is between 400-7, 000 RPM
 The engine coolant temperature (ECT) is between -7 to +125°C (+19 to +257°F).
 The intake air temperature (IAT) is between -20 to +125°C (-4 to +257°F).
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTCs

The ECM detects that the actual airflow rate is greater than the calculated airflow.

Action Taken When the DTCs Set

 DTC P0068 is a type A DTC.

 DTC P0068 is a type B DTC; with RPO LDD.
 DTC P1101 is a type B DTC.

Conditions for Clearing the DTCs

 DTC P0068 is a type A DTC.

 DTC P0068 is a type B DTC; with RPO LDD.
 DTC P1101 is a type B DTC.

Reference Information

Schematic Reference
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

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Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

3. Ignition ON.
4. Verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90 %.
 If 90 % or greater

Refer to Throttle Body Inspection and Cleaning .

If less than 90 %

5. Verify the scan tool Throttle Position Sensors 1 and 2 Agree/Disagree parameter displays Agree while
performing the Throttle Sweep Test with a scan tool.
 If Disagree

Refer to DTC P0121-P0123, P0222, P0223, or P2135 (LUV) for further diagnosis.

 If Agree
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6. Determine the current vehicle testing altitude.

7. Verify the scan tool MAP Sensor pressure parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the MAP Sensor parameter is not in range

Refer to DTC P0106 for further diagnosis.

 If the MAP Sensor parameter is within range

8. Verify the engine is equipped with a turbocharger.
 If not equipped with a turbocharger

Refer to Step 11.

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 If equipped with a turbocharger
9. Verify the scan tool Boost Pressure Sensor parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the Boost Pressure Sensor parameter is not in range

Refer to DTC P0236 for further diagnosis.

 If the Boost Pressure Sensor parameter is within range

10. Verify the scan tool Boost Pressure Sensor parameter decreases after starting the engine.
 If the Boost Pressure Sensor parameter does not decrease

Refer to DTC P0236 for further diagnosis.

 If the Boost Pressure Sensor parameter is within range

11. Engine idling, verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 PSI)
and changes with accelerator pedal input.
 If not between 26-52 kPa (3.8-7.5 PSI) or does not change

Refer to DTC P0106 for further diagnosis.

 If between 26-52 kPa (3.8-7.5 PSI) and changes

12. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is
increased and decreased while performing the actions listed below.
1. Engine idling
2. Perform the scan tool snapshot function.
3. Increase the engine speed slowly to 3, 000 RPM and then back to idle.
4. Exit from the scan tool snapshot and review the data.
5. Observe the MAF Sensor parameter frame by frame with a scan tool.
 If the MAF Sensor parameter does not change smoothly and gradually
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Refer to DTC P0101 for further diagnosis.

If the MAF Sensor parameter changes smoothly and gradually

13. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
14. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below for further diagnosis.

If the DTC does not set



15. All OK

Circuit/System Testing

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NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Verify the integrity of the entire air induction system by verifying that none of the following conditions
exist:
 Any damaged components

 Improper operation of turbocharger wastegate actuator or bypass valve; where equipped

 Improperly installed components

 Collapsed, restricted, or damaged components

 Loose clamps, cracks, or other damage

 An air flow restriction

 Restricted air filter

 Splits, kinks, leaks, or improper connections at the vacuum hoses

 Vacuum leaks at the intake manifold, MAP sensor, and throttle body

 Water intrusion

 Any snow or ice buildup, in cold climates

 Contamination of the MAF sensor element

 Missing, restricted, or leaking exhaust components-Refer to Symptoms - Engine Exhaust for

further diagnosis.
 If a condition is found

Repair or replace component as appropriate.

 If no condition is found
2. Test the engine for a mechanical condition. Refer to Symptoms - Engine Mechanical for diagnosis.
 If a condition is found
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Repair or replace component as appropriate.

If no condition is found


3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for engine control module replacement, programming, and setup

DTC P0096 OR P0111

Diagnostic Instructions

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 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0096

Intake Air Temperature (IAT) Sensor 2 Performance

DTC P0111

Intake Air Temperature (IAT) Sensor 1 Performance

Diagnostic Fault Information

IAT Sensor 1
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P0113*,
P0112, P0114, P0113, P0114,
Sensor P0114, P0111, P0114
P2199** P2199**
P2199**
P0097, P0113,
Low Reference - P11C2, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
**Where used.

IAT Sensor 2
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
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P0097, P0651, P0097, P0651,

P0096, P0097,
P11C2, P11C2,
5 V Reference P11C2, P2199**, -
P2199**, P2199**,
P2227, P2228
P2227, P2228 P2227, P2228
P0097, P11C3, P0097, P11C2, P0097*, P11C2,
Sensor -
P2199** P2199** P2199**
P0097, P0113,
Low Reference - P11C2, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
**Where used.

Typical Scan Tool Data

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IAT Sensor 1
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature
Sensor 150°C (302°F) -40°C (-40°F) -40°C (-40°F)*
Low Reference - -40°C (-40°F) -40°C (-40°F)*
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

IAT Sensor 2
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature
-40°C (-40°F) -40°C (-40°F)
5 V Reference -
10 Hz 10 Hz
-40°C (-40°F)*
Signal -40°C (-40°F) -40°C (-40°F)
10 Hz*
-40°C (-40°F)
Ground - -
10 Hz
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The sensors listed below are integrated within the multifunction intake air sensor:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 MAF sensor
 BARO pressure sensor
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The intake air temperature (IAT) sensor 1 is a variable resistor that changes the voltage on the engine control
module (ECM) supplied 5 V signal circuit. The signal varies with inlet air temperature in the sensor bore and is
displayed by the scan tool as °C (°F). The IAT sensor 2 and the humidity sensor share the same circuit. The IAT
sensor 2 signal is displayed by the scan tool as Hz (Hertz) and °C (°F).

The IAT sensor 1 produces an analog signal on pin-8 of the sensor. The IAT sensor 2 produces a frequency
modulated signal on pin-1 of the sensor.

The sensors listed below share an ECM supplied 5 V reference circuit:

 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

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The sensors listed below share an ECM supplied low reference circuit:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

IAT Sensor 1 - Temperature, Resistance, Voltage Table

IAT Sensor 1 IAT Sensor 1 Resistance IAT Sensor 1 Signal Voltage
Cold High High
Warm Low Low

IAT Sensor 2 - Temperature, Frequency Table

IAT Sensor 2 IAT Sensor 2 Frequency IAT Sensor 2 Temperature
Cold 45 Hz -40°C (-40°F)
Warm 302 Hz 104°C (219°F)

Conditions for Running the DTCs

P0096 and P0111

 DTCs P0097, P0098, P0111, P0112, P0113, P0117, P0118, P00EA, P00EB, or P1682 are not set.
 The ignition has been OFF at least 8 hours.
 Ignition voltage is at least 11 V.
 These DTCs run once per ignition cycle when the enabling conditions are met.

Conditions for Setting the DTCs

P0096
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 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 2 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 2 start-up temperature and the IAT
sensor 3 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 3 start-up temperature is less than or equal to 25°C (45°F).
 This DTC runs once per ignition cycle when the enabling conditions are met.

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NOTE: P0111 Can fail under any of the following 3 sets of conditions.

P0111 - Condition 1

 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 2 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 3 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 2 start-up temperature and the IAT
sensor 3 start-up temperature is less than or equal to 25°C (45°F).

P0111 - Condition 2

 The ECM determines the IAT sensor 2 start-up temperature is between the IAT sensor 1 and IAT sensor 3
start-up temperatures.

AND

 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 3 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 2 and the IAT sensor 1 start-up
temperatures is greater than absolute difference between IAT sensor 2 and the IAT sensor 3 start-up
temperatures.
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P0111 - Condition 3

 The ECM determines the IAT sensor 3 start-up temperature is between the IAT sensor 1 and IAT sensor 2
start-up temperatures.

AND

 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 2 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 3 and the IAT sensor 1 start-up
temperatures is greater than absolute difference between IAT sensor 3 and the IAT sensor 2 start-up
temperatures.

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DTC P0111 runs once an ignition cycle when the any one, of the above 3 enabling sets of conditions is met.

Action Taken When the DTCs Set

DTCs P0096 and P0111 are Type B DTCs.

Conditions for Clearing the DTCs

DTCs P0096 and P0111 are Type B DTCs.

Diagnostic Aids

 With the ignition ON, when the engine is OFF and is cold; properly functioning IAT sensors 1 and 2 will
gradually increase the scan tool IAT Sensor 1 and 2 parameters. This is due to the heat that is generated
by the multifunction intake air sensor internal heating elements.
 The Humidity sensor and the IAT sensor 2 signals are sent to the ECM on the same circuit. If the IAT
Sensor 2 parameter displays the values: 10 Hz; -40°C (-40°F), and there are also Humidity Sensor DTCs,
check for a circuit problem.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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Special Tools

EL-38522-A Variable Signal Generator

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 3 and 4 of this verification procedure only if the
ignition has been OFF for 8 hours or more.

3. Ignition ON.
4. Verify the following scan tool parameters are within 25°C (45°F) of each other.
 Start-Up IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3; where equipped

 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

If within 25°C (45°F)



5. Engine idling, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 IAT Sensor 1
 IAT Sensor 2
 If not between: -38 and +149°C (-36 and +300°F)

Refer to Circuit System Testing below.

If between: -38 and +149°C (-36 and +300°F)

6. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
7. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

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If the DTC does not set


8. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Check the integrity of the entire air induction system and verify that none of the following conditions
exist:
 A loose or disconnected charge air cooler hose or pipe; where equipped

 A blocked or obstructed charge air cooler, including: after-market grill covers; where equipped

 Any snow or ice build-up at the charge air cooler in cold climates; where equipped

 Any mud or dirt build-up at the charge air cooler; where equipped

 A restricted or collapsed air intake duct

 An intake manifold leak

 A MAP sensor seal that is leaking, missing, or damaged

 A misaligned or damaged air intake duct

 Any water intrusion in the induction system

 An Intake Manifold Resonator with a leaking seal, or a cracked or broken housing

 If a condition exists

Repair or replace component as appropriate.

 If no condition exists
2. Ignition OFF, and all vehicle systems OFF, it may take up to 2 min. for all vehicle systems to power
down. Disconnect the harness connector at the B75C Multifunction Intake Air sensor.
3. Test for less than 2 ohms between the low reference circuit terminal 7 and ground.
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 If 2 ohms or greater
1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

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 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the 5 V reference circuit is shorted to a voltage the engine control

module or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 8 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.
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1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Ignition ON, verify the scan tool IAT Sensor 1 parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F).

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 8 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

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3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

7. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 8 and the low reference
circuit terminal 7.
8. Verify the scan tool IAT Sensor 3 parameter is warmer than 150°C (302°F).
 If colder than 150°C (302°F).

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 150°C (302°F).

9. Ignition ON, test for 4.8-5.2 V between the signal terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

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 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

10. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

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1. Replace the K20 Engine Control Module.
2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 17.

 If no DTCs set
4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

11. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 1 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

12. Set the EL-38522-A Variable Signal Generator to the following specifications.
 Signal switch to 5 V

 Duty Cycle switch to 50 % (Normal)

 Frequency switch to 30 Hz

13. Ignition ON, verify the scan tool IAT Sensor 2 parameter is between 28-32 Hz.
 If not between 28-32 Hz

Replace the K20 Engine Control Module.

 If between 28-32 Hz
14. Ignition OFF and all vehicle systems OFF, disconnect the B111B Turbocharger Boost/Intake Air
Temperature sensor. It may take up to 2 min for all vehicle systems to power down.
15. Test for less than 2 ohms between the low reference circuit terminal 1 and ground.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If 2 ohms or greater
1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

16. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

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 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

17. Ignition ON, verify the scan tool IAT Sensor 3 parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F).

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 2 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

18. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 1 and the low reference
circuit terminal 2.
19. Verify the scan tool IAT Sensor 3 parameter is warmer than 150°C (302°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If colder than 150°C (302°F).

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 150°C (302°F).

20. Test or replace the appropriate temperature sensor.

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Component Testing

Multifunction Intake Air Sensor

1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 1 by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch
Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
Bosch Sensors. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B75C Multifunction Intake Air sensor.

If within the specified range.

3. All OK

Multifunction Intake Air Sensor

1. Test the IAT Sensor 2 by varying the sensor temperature while monitoring the air temperature with a
thermometer. Compare the readings with the scan tool IAT Sensor 2 parameter. The values should be
within 5%.
 If not within 5%.

Replace the B75C Multifunction Intake Air sensor.

If within 5%.

2. All OK
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Turbocharger Boost/Intake Air Temperature sensor

1. Ignition OFF, disconnect the harness connector at the B111B Turbocharger Boost/Intake Air Temperature
sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 3 by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch
Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
the appropriate sensor. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B111B Turbocharger Boost/Intake Air Temperature sensor.

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If within the specified range.


3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Intake Air Pressure and Temperature Sensor Replacement for turbocharger boost/intake air
temperature sensor replacement
 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P0097 OR P0098

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0097

Intake Air Temperature (IAT) Sensor 2 Circuit Low Voltage

DTC P0098

Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage

Diagnostic Fault Information

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

IAT Sensor 2
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P0097, P0651, P0097, P0651,
P0096**, P0097,
P11C2**, P11C2**,
5 V Reference P11C2**, P2199**, -
P2199**, P2199**,
P2227, P2228
P2227, P2228 P2227, P2228
P0097, P0097*,
P0097, P11C2**,
Sensor P11C3**, P11C2**, -
P2199**
P2199** P2199**
P0097, P0113,
Low Reference - P11C2**, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

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**Where used.

Typical Scan Tool Data

IAT Sensor 2
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature
-40°C (-40°F) -40°C (-40°F)
5 V Reference -
10 Hz 10 Hz
-40°C (-40°F)*
Signal -40°C (-40°F) -40°C (-40°F)
10 Hz*
-40°C (-40°F)
Ground - -
10 Hz
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The sensors listed below are integrated within the multifunction intake air sensor:

 Intake Air Temperature (IAT) sensor 1

 IAT sensor 2
 Humidity sensor
 Mass Air Flow (MAF) sensor
 Barometric (BARO) pressure sensor

The IAT sensor 2 and the humidity sensor share the same circuit. The IAT sensor 2 signal is displayed by the
scan tool as Hertz (Hz) and °C (°F).

The sensors listed below share an ECM supplied 5 V reference circuit:

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

The sensors listed below share an ECM supplied low reference circuit:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

IAT Sensor 2 - Temperature, Frequency Table

IAT Sensor 2 IAT Sensor 2 Frequency IAT Sensor 2 Temperature

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Cold 45 Hz -40°C (-40°F)
Warm 302 Hz 104°C (219°F)

Conditions for Running the DTCs

P0097 and P0098

 The ignition is ON, or the engine is running.

 The Ignition voltage is at least 11 V.
 The DTCs run continuously within the enabling conditions.

Conditions for Setting the DTCs

P0097

NOTE: The scan tool display range is between -40 and +150°C (-40 and +302°F).

The ECM detects that the IAT sensor 2 signal is less than 10 Hz, colder than -60°C (-76°F), for greater than 5 s.

P0098

The ECM detects that the IAT sensor 2 signal is greater than 390 Hz, warmer than 150°C (302°F), for greater
than 5 s.

Action Taken When the DTC Sets

 DTCs P0097 and P0098 are Type B DTCs.

 DTCs P0097 and P0098 are Type C DTCs; with RPO LDD.
 The ECM commands the cooling fans ON.

Conditions for Clearing the MIL/DTCs

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTCs P0097 and P0098 are Type B DTCs.

 DTCs P0097 and P0098 are Type C DTCs; with RPO LDD.

Diagnostic Aids

 With the ignition ON, when the engine is cold and not running, properly functioning IAT sensor 2 will
gradually increase the scan tool IAT Sensor 2 parameters. This is due to the heat that is generated by the
multifunction intake air sensor heating elements.
 The humidity sensor and the IAT sensor 2 signals are sent to the ECM on the same circuit. If the IAT
Sensor 2 parameter displays the values: 10 Hz; -40°C (-40°F), and there are also Humidity Sensor DTCs,
check for a circuit problem.

Reference Information

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Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References Control Module References for scan tool information

Special Tools

EL-38522-A Variable Signal Generator

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 3 and 4 of this verification procedure only if the
ignition has been OFF for 8 hours or more.

3. Ignition ON.
4. Verify the following scan tool parameters are within 25°C (45°F) of each other.

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 Start-Up IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3; where equipped

 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

If within 25°C (45°F)



5. Engine idling, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
 IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3; where equipped

 If not between: -38 and +149°C (-36 and +300°F)

Refer to Circuit System Testing below.

If between: -38 and +149°C (-36 and +300°F)

6. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
7. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Testing.

1. Ignition OFF, and all vehicle systems OFF, it may take up to 2 min. for all vehicle systems to power
down. Disconnect the harness connector at the B75C Multifunction Intake Air sensor.
2. Test for less than 2 ohms between the low reference circuit terminal 7 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.

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 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the 5 V reference circuit is shorted to a voltage the engine control

module or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

4. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

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1. Replace the K20 Engine Control Module.
2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 9.

 If no DTCs set
4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

6. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 1 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

7. Set the EL-38522-A Variable Signal Generator to the following specifications.

 Signal switch to 5 V

 Duty Cycle switch to 50 % (Normal)

 Frequency switch to 30 Hz

8. Ignition ON, verify the scan tool IAT Sensor 2 parameter is between 28-32 Hz.
 If not between 28-32 Hz

Replace the K20 Engine Control Module.

 If between 28-32 Hz
9. Test or replace the B75C Multifunction Intake Air sensor.

Component Testing
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Multifunction Intake Air Sensor

Test the IAT Sensor 2 by varying the sensor temperature while monitoring the air temperature with a
thermometer. Compare the readings with the scan tool IAT Sensor 2 parameter. The values should be within
5%.

 If not within 5%.

Replace the B75C Multifunction Intake Air sensor.

 If within 5%.

All OK

Repair Instructions

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Perform the Diagnostic Repair Verification after completing the repair.

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement.
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P00C7

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P00C7

Intake Air Pressure Measurement System - Multiple Sensors Not Plausible

Circuit/System Description

The Intake Air Pressure Measurement System consists of 3 sensors:

 The barometric pressure (BARO) sensor

 The manifold absolute pressure (MAP) sensor
 The turbo boost sensor

Conditions for Running the DTC

 DTCs P0106, P0107, P0108, P2122, P2123, P2127, P2128, P2138 or P2610 are not set.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The engine is running.

 Time between current ignition cycle and the last time the engine was running is greater than 10 s.
 Manifold pressure between 50-115 kPa (7.25-16.68 PSI).
 BARO pressure between 50-115 kPa (7.25-16.68 PSI).
 Turbocharger boost pressure between 50-115 kPa (7.25-16.68 PSI).
 This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

The ECM detects an inconsistency between pressure sensors in the induction system in which a particular
sensor cannot be identified as the failed sensor. The difference is greater than 10 kPa (1.5 PSI).

Action Taken When the DTC Sets

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DTC P00C7 is a Type B DTC.

Conditions for Clearing the DTC

DTC P00C7 is a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTCs P0106, P0107, P0236,
P0237, P0238, P2227, P2228, P2229, or P2230, are not set.
 If any of the DTCs are set

If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

 If none of the DTCs is set

2. Ignition ON, verify the following scan tool parameters are within range of the Altitude vs. Barometric
Pressure table. Refer to: Altitude Versus Barometric Pressure table.
 Barometric Pressure

 Manifold Absolute Pressure

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 Boost Pressure

 If a sensor parameter is not within range

Refer to the appropriate diagnostic below for further diagnosis.

Barometric Pressure (BARO) Sensor. Refer to: DTC P2227-P2230

 Manifold Absolute Pressure (MAP) Sensor. Refer to: DTC P0106

 Turbocharger Boost Pressure Sensor. Refer to: DTC P0236

 If all sensor parameters are within range

3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for Engine Control Module replacement, programming and setup.

DTC P00EA OR P00EB

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P00EA

Intake Air Temperature (IAT) Sensor 3 Circuit Low Voltage

DTC P00EB
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Intake Air Temperature (IAT) Sensor 3 Circuit High Voltage

Diagnostic Fault Information

IAT Sensor 3
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P00EA,
Sensor P00E9, P00EB P00EB* P00E9
P00EB
Low Reference - P00E9, P00EB P00EB* -
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

Typical Scan Tool Data

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IAT Sensor 3
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature; and engine bay conditions
Sensor 130°C (266°F) -40°C (-40°F) -40°C (-40°F)*
Low Reference - -40°C (-40°F) -40°C (-40°F)*
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The intake air temperature (IAT) sensor 3 is a variable resistor that changes an engine control module (ECM)
supplied 5 V signal. The signal varies with inlet air temperature and is displayed by the scan tool as °C (°F).
The IAT sensor 3 is integrated with the throttle inlet absolute pressure sensor in the sensor bore, which is
located before the throttle body. The ECM provides a ground for the IAT sensor 3 low reference circuit.

Conditions for Running the DTCs

P00EA and P00EB

 The ignition is ON, or the engine is running.

 The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

P00EA

The ECM detects that the IAT sensor 3 signal is warmer than 149°C (300°F) for at least 5 s.

P00EB

NOTE: The scan tool display range is between -40 and +150°C (-40 and +302°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The ECM detects that the IAT sensor 3 signal is colder than -60°C (-76°F) for at least 5 s.

Action Taken When the DTCs Set

 DTCs P00EA and P00EB are Type B DTCs.

 The ECM commands the cooling fans ON.

Conditions for Clearing the DTCs

DTCs P00EA and P00EB are Type B DTCs.

Reference Information

Schematic Reference

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Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 3 and 4 of this verification procedure only if the
ignition has been OFF for 8 hours or more.

3. Ignition ON.
4. Verify the following scan tool parameters are within 25°C (45°F) of each other.
 Start-Up IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3

 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

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If within 25°C (45°F)


5. Engine idling, verify the IAT Sensor 3 scan tool parameter is between: -38 and +128°C (-36 and +262°F).
 If not between: -38 and +128°C (-36 and +262°F)

Refer to Circuit System Testing below.

If between: -38 and +128°C (-36 and +262°F)

6. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
7. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Ignition OFF and all vehicle systems OFF, disconnect the B111B Turbocharger Boost/Intake Air
Temperature sensor. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 2 ohms between the low reference circuit terminal 1 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

3. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

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 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

4. Ignition ON, verify the scan tool IAT Sensor 3 parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F).

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 2 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

5. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 2 and the low reference
circuit terminal 1.
6. Verify the scan tool IAT Sensor 3 parameter is warmer than 130°C (266°F).
 If colder than 130°C (266°F).

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 130°C (266°F).

7. Test or replace the B111B Turbocharger Boost/Intake Air Temperature sensor.

Component Testing

Turbocharger Boost/Intake Air Temperature sensor

1. Ignition OFF, disconnect the harness connector at the B111B Turbocharger Boost/Intake Air Temperature

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sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 3 by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch
Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
the appropriate sensor. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B111B Turbocharger Boost/Intake Air Temperature sensor.

If within the specified range.



3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Intake Air Pressure and Temperature Sensor Replacement for turbocharger boost/intake air
temperature replacement
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P00E9

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC Descriptor

DTC P00E9

Intake Air Temperature (IAT) Sensor 3 Circuit Performance

Diagnostic Fault Information

IAT Sensor 3
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P00EA,
Sensor P00E9, P00EB P00EB* P00E9
P00EB
Low Reference - P00E9, P00EB P00EB* -

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*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

Typical Scan Tool Data

IAT Sensor 3
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature; and engine bay conditions
Sensor 130°C (266°F) -40°C (-40°F) -40°C (-40°F)*
Low Reference - -40°C (-40°F) -40°C (-40°F)*
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The intake air temperature (IAT) sensor 3 is a variable resistor that changes an engine control module (ECM)
supplied 5 V signal. The signal varies with inlet air temperature and is displayed by the scan tool as °C (°F).
The IAT sensor 3 is integrated with the B111B Turbocharger Boost/Intake Air Temperature Sensor in the
sensor bore, which is located before the throttle body. The ECM supplies a ground for the IAT sensor 3 low
reference circuit.

The IAT sensor 1 and IAT sensor 2 are part of the B75C Multifunction Intake Air Sensor. The IAT sensor 1
produces an analog signal on pin-8 of the sensor. The IAT sensor 2 produces a frequency modulated signal on
pin-1 of the sensor.

IAT Sensor 3 - Temperature, Resistance, Voltage Table

IAT Sensor 3 IAT Sensor 3 Resistance IAT Sensor 3 Signal Voltage
Cold High High
Warm Low Low

Conditions for Running the DTC

P00E9
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTCs P0097, P0098, P00EA, P00EB, P0111, P0112, P0113, P0117, P0118, or P1682 are not set.
 The vehicle has been OFF at least 8 hours.
 Ignition voltage is at least 11 V.
 This DTC runs once per ignition cycle when the enabling conditions are met.

Conditions for Setting the DTC

NOTE: P00E9 Can fail under any of the following 3 sets of conditions.

P00E9-Condition 1

 The ECM determines the absolute difference between IAT sensor 1 start-up temperature and the IAT
sensor 2 start-up temperature is less or equal to 25°C (45°F).

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AND

 The ECM determines the absolute difference between IAT sensor 3 start-up temperature and the IAT
sensor 1 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 3 start-up temperature and the IAT
sensor 2 start-up temperature is greater than 25°C (45°F).

P00E9-Condition 2

 The ECM determines the IAT sensor 1 start-up temperature is between the IAT sensor 3 and the IAT
sensor 2 start-up temperatures

AND

 The ECM determines the absolute difference between IAT sensor 3 start-up temperature and the IAT
sensor 2 start-up temperature is greater than 25°C (45°F).

AND

 The ECM determines the absolute difference between IAT sensor 3 and the IAT sensor 1 start-up
temperatures is greater than the absolute difference between IAT sensor 2 and the IAT sensor 1 start-up
temperatures.

P00E9-Condition 3

 The ECM determines the IAT sensor 2 start-up temperature is between the IAT sensor 3 and the IAT
sensor 1 start-up temperatures

AND
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The ECM determines the absolute difference between IAT sensor 3 and the IAT sensor 1 start-up
temperatures is greater than 25°C (45°F).

AND

 The absolute difference between IAT sensor 3 and the IAT sensor 2 start-up temperatures is greater than
the absolute difference between IAT sensor 2 and the IAT sensor 1 start-up temperatures.

DTC P00E9 runs once an ignition cycle when one of the above 3 enabling sets of conditions are met.

Action Taken When the DTC Sets

DTC P00E9 is a Type B DTC.

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Conditions for Clearing the DTCs

DTC P00E9 is a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38522-A Variable Signal Generator

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 3 and 4 of this verification procedure only if the

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ignition has been OFF for 8 hours or more.

3. Ignition ON.
4. Verify the following scan tool parameters are within 25°C (45°F) of each other.
 Start-Up IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3

 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

If within 25°C (45°F)



5. Engine idling, verify the IAT Sensor 3 scan tool parameter is between: -38 and +128°C (-36 and +262°F).
 If not between: -38 and +128°C (-36 and +262°F)

Refer to Circuit System Testing below.

If between: -38 and +128°C (-36 and +262°F)

6. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
7. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK

Circuit/System Testing
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Check the integrity of the entire air induction system and verify that none of the following conditions
exist:
 A loose or disconnected charge air cooler hose or pipe

 A blocked or obstructed charge air cooler, including: after-market grill covers

 Any snow or ice build-up at the charge air cooler in cold climates

 Any mud or dirt build-up at the charge air cooler

 A restricted or collapsed air intake duct

 An intake manifold leak

 A MAP sensor seal that is leaking, missing, or damaged

 A misaligned or damaged air intake duct

 Any water intrusion in the induction system

 An Intake Manifold Resonator with a leaking seal, or a cracked or broken housing

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 If a condition exists

Repair or replace component as appropriate.

 If no condition exists
2. Ignition OFF and all vehicle systems OFF, disconnect the B75C Multifunction Intake Air sensor. It may
take up to 2 min for all vehicle systems to power down.
3. Test for less than 2 ohms between the low reference circuit terminal 7 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the 5 V reference circuit is shorted to a voltage the engine control

module or the sensor may be damaged.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Ignition ON, test for 4.8-5.2 V between the signal terminal 8 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

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3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Ignition ON, verify the scan tool IAT Sensor 1 parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F).

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 8 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

7. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 8 and the low reference
circuit terminal 7.
8. Verify the scan tool IAT Sensor 3 parameter is warmer than 150°C (302°F).
 If colder than 150°C (302°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 150°C (302°F).

9. Ignition OFF and all vehicle systems OFF, disconnect the B111B Turbocharger Boost/Intake Air
Temperature sensor. It may take up to 2 min for all vehicle systems to power down.

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10. Test for less than 2 ohms between the low reference circuit terminal 1 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

11. Ignition ON, test for 4.8-5.2 V between the signal terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

12. Ignition ON, verify the scan tool IAT Sensor 3 parameter is colder than -39°C (-38°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If warmer than -39°C (-38°F).

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 2 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

13. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 2 and the low reference
circuit terminal 1.
14. Verify the scan tool IAT Sensor 3 parameter is warmer than 130°C (266°F).

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 If colder than 130°C (266°F).

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 130°C (266°F).

15. Ignition ON, test for 4.8-5.2 V between the signal terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

16. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

1. Replace the K20 Engine Control Module.

2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 20.

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 If no DTCs set
4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

17. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 1 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

18. Set the EL-38522-A Variable Signal Generator to the following specifications.
 Signal switch to 5 V

 Duty Cycle switch to 50 % (Normal)

 Frequency switch to 30 Hz

19. Ignition ON, verify the scan tool IAT Sensor 2 parameter is between 28-32 Hz.
 If not between 28-32 Hz

Replace the K20 Engine Control Module.

 If between 28-32 Hz
20. Test or replace the appropriate temperature sensor.

Component Testing

Multifunction Intake Air Sensor

1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 1 by varying the sensor temperature while monitoring the sensor resistance. Compare
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch
Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
Bosch Sensors. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B75C Multifunction Intake Air sensor.

If within the specified range.



3. All OK

Multifunction Intake Air Sensor

1. Test the IAT Sensor 2 by varying the sensor temperature while monitoring the air temperature with a
thermometer. Compare the readings with the scan tool IAT Sensor 2 parameter. The values should be

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within 5%.
 If not within 5%.

Replace the B75C Multifunction Intake Air sensor.

If within 5%.


2. All OK

Turbocharger Boost/Intake Air Temperature sensor

1. Ignition OFF, disconnect the harness connector at the B111B Turbocharger Boost/Intake Air Temperature
sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 3 by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch
Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
the appropriate sensor. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B111B Turbocharger Boost/Intake Air Temperature sensor.

If within the specified range.



3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Intake Air Pressure and Temperature Sensor Replacement for turbocharger boost/intake air
temperature sensor replacement
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P0101

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0101

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Mass Air Flow (MAF) Sensor Performance

Diagnostic Fault Information

MAF Sensor
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
Ignition Voltage P0102 P0102, P01101 P0690 P0101
Sensor P0102, P1101 P0102, P1101 P0102* P0101, P1101
Ground - P0102 - -
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

Typical Scan Tool Data

MAF Sensor
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 2, 000-10, 000 Hz
Ignition Voltage 0 Hz 0 Hz -
Sensor 0 Hz 0 Hz 0 Hz*
Ground - 0 Hz -
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit Description

The sensors listed below are integrated within the multifunction intake air sensor:

 Intake Air Temperature (IAT) sensor 1

 IAT sensor 2
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Humidity sensor
 Mass Air Flow (MAF) sensor
 Barometric (BARO) pressure sensor

The MAF sensor is an air flow meter that measures the amount of air flowing in the sensor bore. The engine
control module (ECM) uses the MAF sensor signal to provide the correct fuel delivery for all engine speeds and
loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of
air entering the engine indicates an acceleration or high load condition.

The ECM applies 5 V to the MAF sensor signal circuit. The sensor produces a variable frequency signal based
on the inlet air flow through the sensor bore. The signal varies with engine load and is displayed by the scan
tool as Hertz (Hz) and grams per second (g/s). Vehicle ignition voltage and ground circuits are also supplied to
the MAF sensor.

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The intake flow rationality diagnostic provides the within-range rationality check for the mass air flow (MAF),
manifold absolute pressure (MAP), and the throttle position sensors. This is an explicit model-based diagnostic
containing 4 separate models for the intake system.

The estimates of MAF and MAP obtained from this system of models and calculations are then compared to the
actual measured values from the MAF, MAP, and the throttle position sensors and to each other to determine
the appropriate DTC to fail.

The sensors listed below share an ECM supplied 5 V reference circuit:

 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

The sensors listed below share an ECM supplied low reference circuit:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

Conditions for Running the DTCs

 DTCs P0096, P0097, P0098, P0102, P0103, P0107, P0111, P0112, P0113, P0116, P0117, P0118, P0119,
P0237, P0238, P0335, P0336, P2227, P2228, P2229, or P2230 are not set.
 The engine speed is between 400-6, 000 RPM.
 The engine coolant temperature (ECT) is between -7 and +125°C (+19 and +257°F).
 The intake air temperature (IAT) is between -20 and +100°C (-4 and +212°F).
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The engine control module (ECM) detects that the actual measured airflow from the MAF, MAP, and throttle
position sensors is not within range of the calculated airflow that is derived from the system of models for
greater than 2 s.

Action Taken When the DTC Sets

DTC P0101 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0101 is a Type B DTC.

Diagnostic Aids

 Certain aftermarket air filters may cause this DTC to set.

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 Certain aftermarket air induction systems may cause this DTC to set.
 Modifications to the air induction system may cause this DTC to set.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38522-A Variable Signal Generator

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

3. If you were sent here from DTC P0068, P0106, P0121, P0236, or P1101; refer to Circuit/System Testing
below.
4. Ignition ON.

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5. Verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90 %.
 If 90 % or greater

Refer to Throttle Body Inspection and Cleaning .

If less than 90 %

6. Verify the scan tool Throttle Position Sensors 1 and 2 Agree/Disagree parameter displays Agree while
performing the Throttle Sweep Test with a scan tool.
 If Disagree

Refer to DTC P0121-P0123, P0222, P0223, or P2135 (LUV) for further diagnosis.

If Agree
7. Determine the current vehicle testing altitude.
8. Verify the scan tool MAP Sensor pressure parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the MAP Sensor parameter is not in range

Refer to DTC P0106 for further diagnosis.

If the MAP Sensor parameter is within range

9. Verify the engine is equipped with a turbocharger.
 If not equipped with a turbocharger

Refer to Step 12.

If equipped with a turbocharger

10. Verify the scan tool Boost Pressure Sensor parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the Boost Pressure Sensor parameter is not in range
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to DTC P0236 for further diagnosis.

If the Boost Pressure Sensor parameter is within range

11. Verify the scan tool Boost Pressure Sensor parameter decreases after starting the engine.
 If the Boost Pressure Sensor parameter does not decrease

Refer to DTC P0236 for further diagnosis.

If the Boost Pressure Sensor parameter does decrease

12. Engine idling, verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 PSI)
and changes with accelerator pedal input.
 If not between 26-52 kPa (3.8-7.5 PSI) or does not change

Refer to DTC P0106 for further diagnosis.

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If between 26-52 kPa (3.8-7.5 PSI) and changes
13. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is
increased and decreased while performing the actions listed below.
1. Engine idling
2. Perform the scan tool snapshot function.
3. Increase the engine speed slowly to 3, 000 RPM and then back to idle.
4. Exit from the scan tool snapshot and review the data.
5. Observe the MAF Sensor parameter frame by frame with a scan tool.
 If the MAF Sensor parameter does not change smoothly and gradually

Refer to Circuit/System Testing below.

If the MAF Sensor parameter changes smoothly and gradually

14. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
15. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing for further diagnosis.

If the DTC does not set



16. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Check the integrity of the entire air induction system by verifying that none of the following conditions
exist:
 Any damaged components

 Improper operation of turbocharger wastegate actuator or bypass valve; where equipped

 Improperly installed components

 Collapsed, restricted, or damaged components

 Loose clamps, cracks, or other damage

 An air flow restriction

 Restricted air filter

 Splits, kinks, leaks, or improper connections at the vacuum hoses

 Vacuum leaks at the intake manifold, MAP sensor, and throttle body

 Water intrusion

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 Any snow or ice buildup, in cold climates

 Contamination of the Multifunction Intake Air sensor element

 If a condition is found

Repair or replace component as appropriate.

 If no condition is found
2. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.
3. Test for less than 2 ohms between the ground circuit terminal 4 and ground.
 If 2 ohms or greater

1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, repair the open/high resistance in the ground connection.

 If less than 2 ohms

4. Ignition ON.
5. Verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp and remove the fuse for the ignition circuit.
2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp and remove the fuse for the ignition circuit.
2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

3. Test for greater than 2 ohms between the ignition circuit terminal 5 and ground.
 If less than 2 ohms, repair the short to ground on the circuit.

 If greater than 2 ohms, test all the components connected to the circuit and repair or replace
as necessary.
 If a test lamp illuminates

6. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.

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 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

7. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

1. Replace the K20 Engine Control Module.

2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 11.

If no DTCs set

4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

8. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 3 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

9. Set the EL-38522-A Variable Signal Generator to the following specifications.

 Signal switch to 5 V
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Frequency switch to 5 kHz



 Duty Cycle switch to 50 % (Normal)

10. Engine idling, verify the scan tool MAF Sensor parameter is between 4, 950-5, 050 Hz.
 If not between 4, 950-5, 050 Hz.

Replace the K20 Engine Control Module.

If between 4, 950-5, 050 Hz.

11. Test or replace the B75C Multifunction Intake Air sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

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 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement.
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P0102 OR P0103

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0102

Mass Air Flow (MAF) Sensor Circuit Low Frequency

DTC P0103

Mass Air Flow (MAF) Sensor Circuit High Frequency

Diagnostic Fault Information

MAF Sensor
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
Ignition Voltage P0102 P0102, P01101 P0690 P0101
Sensor P0102, P1101 P0102, P1101 P0102* P0101, P1101
Ground - P0102 - -
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Typical Scan Tool Data

MAF Sensor
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 2, 000-10, 000 Hz
Ignition Voltage 0 Hz 0 Hz -
Sensor 0 Hz 0 Hz 0 Hz*
Ground - 0 Hz -
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit Description

The sensors listed below are integrated within the multifunction intake air sensor:

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 Intake Air Temperature (IAT) sensor 1
 IAT sensor 2
 Humidity sensor
 Mass Air Flow (MAF) sensor
 Barometric (BARO) pressure sensor

The MAF sensor is an air flow meter that measures the amount of air flowing in the sensor bore. The engine
control module (ECM) uses the MAF sensor signal to provide the correct fuel delivery for all engine speeds and
loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of
air entering the engine indicates an acceleration or high load condition.

The ECM applies 5 V to the MAF sensor signal circuit. The sensor produces a variable frequency signal based
on the inlet air flow through the sensor bore. The signal varies with engine load and is displayed by the scan
tool as Hertz (Hz) and grams per second (g/s). Vehicle ignition voltage and ground circuits are also supplied to
the MAF sensor.

The sensors listed below share an ECM supplied 5 V reference circuit:

 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

The sensors listed below share an ECM supplied low reference circuit:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Running the DTCs

 The engine is running for at least 1 s.

 The engine speed is at least 300 RPM.
 The ignition signal is at least 10 V.
 The above conditions are met for at least 1 s.
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTCs

P0102

The ECM detects that the MAF Sensor signal parameter is less than 1, 837 Hz (about 0.39 g/s) for at least 250
cylinder firing events.

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P0103

The ECM detects that the MAF Sensor signal parameter is at least 13, 200 Hz (about 810 g/s) for at least 250
cylinder firing events.

Action Taken When the DTCs Set

DTCs P0102 and P0103 are Type B DTCs.

Conditions for Clearing the MIL/DTCs

DTCs P0102 and P0103 are Type B DTCs.

Diagnostic Aids

Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking
Aftermarket Accessories .

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Testing for Intermittent Conditions and Poor Connections

 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38522-A Variable Signal Generator

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For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Engine idling, verify the scan tool MAF Sensor parameter is between 1.75-5.5 g/s.
 If not between 1.75-5.5 g/s

Refer to Circuit/System Testing below.

If between 1.75-5.5 g/s

2. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is
increased and decreased while performing the actions listed below.
1. Engine idling
2. Perform the scan tool snapshot function.
3. Increase the engine speed slowly to 3, 000 RPM and then back to idle.
4. Exit from the scan tool snapshot and review the data.
5. Observe the MAF Sensor parameter frame by frame with a scan tool.
 If the MAF Sensor parameter does not change smoothly and gradually

Refer to Circuit/System Testing below.

If the MAF Sensor parameter changes smoothly and gradually

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing for further diagnosis.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If the DTC does not set



5. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.
2. Test for less than 2 ohms between the ground circuit terminal 4 and ground.
 If 2 ohms or greater

1. Ignition OFF. Disconnect the sensor chassis ground.

2. Test for less than 2 ohms in the ground circuit end to end.

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 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, repair the open/high resistance in the chassis ground connection.

 If less than 2 ohms

3. Ignition ON.
4. Verify that a test lamp illuminates between the ignition circuit terminal 5 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp and remove the fuse for the ignition circuit.
2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp and remove the fuse for the ignition circuit.
2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for greater than 2 ohms between the ignition circuit terminal 5 and ground.
 If less than 2 ohms, repair the short to ground on the circuit.

 If greater than 2 ohms, test all the components connected to the circuit and repair or replace
as necessary.
 If a test lamp illuminates

5. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

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1. Replace the K20 Engine Control Module.
2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 10.

If no DTCs set

4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

7. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 3 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

8. Set the EL-38522-A Variable Signal Generator to the following specifications.

 Signal switch to 5 V

 Frequency switch to 5 kHz

 Duty Cycle switch to 50 % (Normal)

9. Engine idling, verify the scan tool MAF Sensor parameter is between 4, 950-5, 050 Hz.
 If not between 4, 950-5, 050 Hz.

Replace the K20 Engine Control Module.

If between 4, 950-5, 050 Hz.

10. Test or replace the B75C Multifunction Intake Air sensor.

Repair Instructions
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the repair.

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement.
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P0106

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

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DTC P0106

Manifold Absolute Pressure (MAP) Sensor Performance

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
5 V Reference P0107, P0697 P0106, P0107 P0108, P0697 P0106
Signal P0107 P0106, P0107 P0108 P0106
Low Reference - P0106, P0108 - P0106

Typical Scan Tool Data

MAP Sensor
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 12-103 kPa (1.7-14.9 psi)
5 V Reference 0 kPa (0 psi) 0 kPa (0 psi) 104 kPa (15.1 psi)
Signal 0 kPa (0 psi) 0 kPa (0 psi) 104 kPa (15.1 psi)*
80-103 kPa
Low Reference - -
(11.6-14.9 psi)
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

MAP Sensor, when equipped with Turbocharger

Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 12-225 kPa (1.7-32.6 psi)
5 V Reference 0 kPa (0 psi) 0 kPa (0 psi) 255 kPa (36.9 psi)
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Signal 0 kPa (0 psi) 0 kPa (0 psi) 255 kPa (36.9 psi)*

255 kPa (36.9
Low Reference - -
psi)
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

Circuit Description

The manifold absolute pressure (MAP) sensor measures the pressure inside the intake manifold. Pressure in the
intake manifold is affected by engine speed, throttle opening, air temperature, barometric pressure (BARO); and
where equipped turbocharger output. A diaphragm within the MAP sensor is displaced by the pressure changes
that occur from the varying load and operating conditions of the engine. The sensor translates this action into
electrical resistance.

The MAP sensor wiring includes 3 circuits. The engine control module (ECM) supplies a regulated 5 volts to

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the sensor on a 5 V reference circuit. The ECM supplies a ground on a low reference circuit. The MAP sensor
provides a signal voltage to the ECM, relative to the pressure changes, on the MAP sensor signal circuit. The
ECM converts the signal voltage input to a pressure value.

Under normal operation the greatest pressure that can exist in the intake manifold is at ignition ON, engine
OFF, which is equal to the BARO. Where equipped, a turbocharger can increase the pressure above BARO,
when the vehicle is operated at wide-open throttle (WOT). The lowest manifold pressure occurs when the
vehicle is idling or decelerating. The ECM monitors the MAP sensor signal for pressure outside of the normal
range.

Conditions for Running the DTC

 DTCs P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0128, P0335, P0336
are not set.
 The engine speed is between 400-6 500 RPM.
 The engine coolant temperature (ECT) sensor is between -7 to +125°C (19.4-257°F).
 The intake air temperature (IAT) sensor is between -20 to +125°C (-4 to +257°F).
 This DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the MAP sensor pressure is not within range of the calculated pressure that is derived
from the system of models for more than 0.5 s.

Action Taken When the DTC Sets

DTC P0106 is a Type B DTC.

Conditions for Clearing the DTC

DTC P0106 is a Type B DTC.

Reference Information
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

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 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EN-23738-A Vacuum Pump

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTC are set

3. If you were sent here from DTC P0068, P0101, P0121, P0236, or P1101; refer to Circuit/System Testing
below.
4. Ignition ON.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

5. Verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90 %.
 If 90% or greater

Refer to Throttle Body Inspection and Cleaning .

 If less than 90%

6. Verify the scan tool Throttle Position Sensors 1 and 2 Agree/Disagree parameter displays Agree while
performing the Throttle Sweep Test with a scan tool.
 If Disagree

Refer to DTC P0121-P0123, P0222, P0223, or P2135 (LUV) for further diagnosis.

 If Agree

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7. Determine the current vehicle testing altitude.
8. Verify the scan tool MAP Sensor pressure parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the MAP Sensor parameter is not in range

Refer to Circuit/System Testing below.

 If the MAP Sensor parameter is in range

9. Verify the engine is equipped with a turbocharger.
 If not equipped with a turbocharger

Refer to Step 12.

 If equipped with a turbocharger

10. Verify the scan tool Boost Pressure Sensor parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the Boost Pressure Sensor parameter is not in range

Refer to DTC P0236 for further diagnosis.

 If the Boost Pressure Sensor parameter is in range

11. Verify the scan tool Boost Pressure Sensor parameter decreases after starting the engine.
 If the Boost Pressure Sensor parameter does not decrease

Refer to DTC P0236 for further diagnosis.

 If the Boost Pressure Sensor parameter is within range

12. Engine idling, verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 psi)
and changes with accelerator pedal input.
 If not between 26-52 kPa (3.8-7.5 psi) or does not change
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

If between 26-52 kPa (3.8-7.5 psi) and changes

13. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is
increased and decreased while performing the actions listed below.
1. Engine idling
2. Perform the scan tool snapshot function.
3. Increase the engine speed slowly to 3, 000 RPM and then back to idle.
4. Exit from the scan tool snapshot and review the data.
5. Observe the MAF Sensor parameter frame by frame with a scan tool.
 If the MAF Sensor parameter does not change smoothly and gradually

Refer to DTC P0101.

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If the MAF Sensor parameter does change smoothly and gradually
14. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
15. Verify a DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



16. All OK.

Circuit/System Testing

1. Check the integrity of the entire air induction system and verify that none of the following conditions
exist:
 Any damaged components

 Improper operation of turbocharger wastegate actuator or bypass valve, where equipped

 Loose or improper installation of the turbocharger and the charge air cooler, including the flexible
ductwork, where equipped
 An air flow restriction

 Any vacuum leak

 Improperly routed vacuum hoses

 In cold climates, inspect for any snow or ice buildup at the BARO port on the ECM, where
equipped
 A restriction in the MAP sensor port or the BARO port

 Proper operation of the Positive Crankcase Ventilation (PCV) system

 Missing, restricted or leaking exhaust components. Refer to Symptoms - Engine Exhaust .

 Engine mechanical condition; for example: low compression or incorrect timing chain installation.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Symptoms - Engine Mechanical .

 If a condition is found

Repair or replace the component as appropriate.

 If no condition is found
2. Ignition OFF and all vehicle systems OFF, disconnect the B74 Manifold Absolute Pressure sensor. It may
take up to 2 minutes for all vehicle systems to power down.
3. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

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2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 2 ohms

4. Ignition ON.
5. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

 If greater than 5.2 V

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Ignition ON, verify the scan tool MAP Sensor parameter is less than 0.5 V.
 If 0.5 V or greater

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Ignition ON, test for less than 1 V between the signal circuit terminal 3 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If less than 0.5 V

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7. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 3 and the 5 V reference
circuit terminal 1.
8. Ignition ON, verify the scan tool MAP voltage parameter is greater than 4.5 V.
 If 4.5 V or less

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Remove the jumper wire, test for infinite resistance between the signal circuit terminal 3 and
ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 4.5 V

9. Test or replace the B74 Manifold Absolute Pressure sensor.

Component Testing

NOTE: You must perform the Circuit/System Testing in order to Check the integrity of
the MAP sensor circuits before proceeding with the Component Testing.

Skewed Sensor Test

1. Ignition OFF, remove the B74 Manifold Absolute Pressure sensor from the engine. Connect the harness
to the sensor, if disconnected.
2. Ignition ON, apply -17 kPa (5.0 inHg) of vacuum to the B74 Manifold Absolute Pressure sensor, with the
EN-23738-A Vacuum Pump. Verify the scan tool MAP pressure parameter decreases between 13-21 kPa
(1.8-3.0 psi).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the parameter does not decrease between 13-21 kPa (1.8-3.0 psi).

Replace the B74 Manifold Absolute Pressure sensor.

If the parameter does decrease between 13-21 kPa (1.8-3.0 psi).
3. Apply -34 kPa (10.0 inHg) of vacuum to the B74 Manifold Absolute Pressure sensor, with the EN-23738-
A Vacuum Pump. Verify the scan tool MAP pressure parameter decreases between 30-38 kPa (4.4-5.5
psi).
 If the parameter does not decrease between 30-38 kPa (4.4-5.5 psi).

Replace the B74 Manifold Absolute Pressure sensor.

If the parameter does decrease between 30-38 kPa (4.4-5.5 psi).



4. All OK.

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Erratic Signal Test

1. Ignition OFF, remove the B74 Manifold Absolute Pressure sensor and disconnect the harness.
2. Install a 3 A fused jumper wire between the 5 V reference circuit terminal 1 of the sensor and the sensor
harness.
3. Install a jumper wire between the low reference circuit terminal 2 of the sensor and ground.
4. Install a jumper wire to the signal circuit terminal 3 of the sensor.
5. Connect a DMM between the jumper wire and ground.
6. Ignition ON, observe the DC voltage on the DMM. Slowly apply between 0-15kPa of vacuum to the
sensor with the EN-23738-A Vacuum Pump. Verify the voltage changes, without any spikes or dropouts,
between 4.9-0.2 V.
 If not between 4.9-0.2 V or has spikes or dropouts

Replace the B74 Manifold Absolute Pressure sensor.

If between 4.9-0.2 V and there are no spikes or dropouts



7. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Manifold Absolute Pressure Sensor Replacement

 Control Module References for Engine Control Module replacement, programming and setup

DTC P0107 OR P0108

Diagnostic Instructions
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0107

Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

DTC P0108

Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

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Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
5 V Reference P0107, P0697 P0106, P0107 P0108, P0697 P0106
Signal P0107 P0106, P0107 P0108 P0106
Low Reference - P0106, P0108 - P0106

Typical Scan Tool Data

MAP Sensor
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 12-103 kPa (1.7-14.9 psi)
5 V Reference 0 kPa (0 psi) 0 kPa (0 psi) 104 kPa (15.1 psi)
Signal 0 kPa (0 psi) 0 kPa (0 psi) 104 kPa (15.1 psi)*
80-103 kPa
Low Reference - -
(11.6-14.9 psi)
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.

MAP Sensor, when equipped with Turbocharger

Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 12-225 kPa (1.7-32.6 psi)
5 V Reference 0 kPa (0 psi) 0 kPa (0 psi) 255 kPa (36.9 psi)
Signal 0 kPa (0 psi) 0 kPa (0 psi) 255 kPa (36.9 psi)*
255 kPa (36.9
Low Reference - -
psi)
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit Description

The manifold absolute pressure (MAP) sensor measures the pressure inside the intake manifold. Pressure in the
intake manifold is affected by engine speed, throttle opening, air temperature, barometric pressure (BARO); and
where equipped turbocharger output. A diaphragm within the MAP sensor is displaced by the pressure changes
that occur from the varying load and operating conditions of the engine. The sensor translates this action into
electrical resistance.

The MAP sensor wiring includes 3 circuits. The engine control module (ECM) supplies a regulated 5 volts to
the sensor on a 5 V reference circuit. The ECM supplies a ground on a low reference circuit. The MAP sensor
provides a signal voltage to the ECM, relative to the pressure changes, on the MAP sensor signal circuit. The
ECM converts the signal voltage input to a pressure value.

Under normal operation the greatest pressure that can exist in the intake manifold is at ignition ON, engine
OFF, which is equal to the BARO. Where equipped, a turbocharger can increase the pressure above BARO,

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when the vehicle is operated at wide-open throttle (WOT). The lowest manifold pressure occurs when the
vehicle is idling or decelerating. The ECM monitors the MAP sensor signal for pressure outside of the normal
range.

Conditions for Running the DTC

P0107

 DTCs P0120, P0121, P0122, P0123, P0220, P0221, P0222, P0223 or P0641 are not set
 The engine speed is between 400-6 500 RPM.
 The throttle position is greater than or equal to 0% when the engine speed is less than or equal to 1 000
RPM

or

 The throttle position is greater than or equal to 12.5% when the engine speed is greater than 1 000 RPM.
 This DTC runs continuously when the above conditions are met.

P0108

 The engine has been running for a length of time that is determined by the start up coolant temperature.
The length of time ranges from 5.5 minutes at colder than -30°C (-22°F) to 10 s at greater than 30°C
(+86°F).
 DTCs P0120, P0121, P0122, P0123, P0220, P0221, P0222, P0223 or P0641 are not set
 The throttle position is less than or equal to 1% when the engine speed is less than or equal to 1 200
RPM.

or

 The throttle position is less than or equal to 20% when the engine speed is greater than 1 200 RPM.
 This DTC runs continuously when the above conditions are met.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Setting the DTC

P0107

The ECM detects that the MAP sensor voltage is less than 0.05 V for greater than 5 s.

P0108

The ECM detects that the MAP sensor voltage is more than 4.9 V for greater than 5 s.

Action Taken When the DTC Sets

DTCs P0107 and P0108 are Type B DTCs.

Conditions for Clearing the DTC

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DTCs P0107 and P0108 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EN-23738-A Vacuum Pump

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

If none of the DTCs are set

3. Engine idling, verify the scan tool MAP voltage parameter is between 0.3-4.8 V and changes with
accelerator pedal input.
 If not between 0.3-4.8 V or does not change

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Refer to Circuit/System Testing below.

If between 0.3-4.8 V and changes

4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed in the Freeze Frame/Failure Records data.
5. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



6. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the B74 Manifold Absolute Pressure sensor. It may
take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 2 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If less than 4.8 V

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

NOTE: If the signal circuit is shorted to a voltage the engine control module

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or the sensor may be damaged.

 If greater than 5.2 V

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Ignition ON, verify the scan tool MAP Sensor parameter is less than 0.5 V.
 If 0.5 V or greater

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If less than 0.5 V

6. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 3 and the 5 V reference
circuit terminal 1.
7. Ignition ON, verify the scan tool MAP voltage parameter is greater than 4.5 V.
 If 4.5 V or less

1. Ignition OFF, disconnect the K20 Engine Control Module, listed below:
 X2 harness connector, ECM with 2 face mounted connectors

 X3 harness connector, ECM with 3 face mounted connectors

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

2. Remove the jumper wire, test for infinite resistance between the signal circuit terminal 3 and
ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 4.5 V

8. Test or replace the B74 Manifold Absolute Pressure sensor.

Component Testing

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NOTE: You must perform the Circuit/System Testing in order to Check the integrity of
the MAP sensor circuits before proceeding with the Component Testing.

Skewed Sensor Test

1. Ignition OFF, remove the B74 Manifold Absolute Pressure sensor from the engine. Connect the harness
to the sensor, if disconnected.
2. Ignition ON, apply -17 kPa (5.0 inHg) of vacuum to the B74 Manifold Absolute Pressure sensor, with the
EN-23738-A Vacuum Pump. Verify the scan tool MAP pressure parameter decreases between 13-21 kPa
(1.8-3.0 psi).
 If the parameter does not decrease between 13-21 kPa (1.8-3.0 psi).

Replace the B74 Manifold Absolute Pressure sensor.

 If the parameter does decrease between 13-21 kPa (1.8-3.0 psi).

3. Apply -34 kPa (10.0 inHg) of vacuum to the B74 Manifold Absolute Pressure sensor, with the EN-23738-
A Vacuum Pump. Verify the scan tool MAP pressure parameter decreases between 30-38 kPa (4.4-5.5
psi).
 If the parameter does not decrease between 30-38 kPa (4.4-5.5 psi).

Replace the B74 Manifold Absolute Pressure sensor.

If the parameter does decrease between 30-38 kPa (4.4-5.5 psi).
4. All OK.

Erratic Signal Test

1. Ignition OFF, remove the B74 Manifold Absolute Pressure sensor and disconnect the harness.
2. Install a 3 A fused jumper wire between the 5 V reference circuit terminal 1 of the sensor and the sensor
harness.
3. Install a jumper wire between the low reference circuit terminal 2 of the sensor and ground.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

4. Install a jumper wire to the signal circuit terminal 3 of the sensor.

5. Connect a DMM between the jumper wire and ground.
6. Ignition ON, observe the DC voltage on the DMM. Slowly apply between 0-15kPa of vacuum to the
sensor with the EN-23738-A Vacuum Pump. Verify the voltage changes, without any spikes or dropouts,
between 4.9-0.2 V.
 If not between 4.9-0.2 V or has spikes or dropouts

Replace the B74 Manifold Absolute Pressure sensor.

If between 4.9-0.2 V and there are no spikes or dropouts



7. All OK.

Repair Instructions

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Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Manifold Absolute Pressure Sensor Replacement

 Control Module References for Engine Control Module replacement, programming and setup

DTC P0112, P0113, OR P0114

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0112

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

DTC P0113

Intake Air Temperature (IAT) Sensor Circuit High Voltage

DTC P0114

Intake Air Temperature (IAT) Sensor Circuit Intermittent

Diagnostic Fault Information

IAT Sensor 1

Short to Open/High Short to

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit Ground Resistance Voltage Signal Performance

P0113*,
P0112, P0114, P0113, P0114,
Sensor P0114, P0111**, P0114
P2199** P2199**
P2199**
P0097, P0113,
Low Reference - P11C2**, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
**Where used.

Typical Scan Tool Data

IAT Sensor 1
Circuit Short to Ground Open or High Resistance Short to Voltage

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Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature
Sensor 150°C (302°F) -40°C (-40°F) -40°C (-40°F)*
Low Reference - -40°C (-40°F) -40°C (-40°F)*
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The sensors listed below are integrated within the multifunction intake air sensor:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 MAF sensor
 BARO pressure sensor

The intake air temperature (IAT) sensor 1 is a variable resistor that changes the voltage on the engine control
module (ECM) supplied 5 V signal circuit. The signal varies with inlet air temperature in the sensor bore and is
displayed by the scan tool as °C (°F).

The IAT sensor 1 produces an analog signal on pin-8 of the sensor. The IAT sensor 2 produces a frequency
modulated signal on pin-1 of the sensor.

The sensors listed below share an ECM supplied 5 V reference circuit:

 IAT sensor 2
 Humidity sensor
 BARO pressure sensor

The sensors listed below share an ECM supplied low reference circuit:
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

IAT Sensor 1 - Temperature, Resistance, Voltage Table

IAT Sensor 1 IAT Sensor 1 Resistance IAT Sensor 1 Signal Voltage
Cold High High
Warm Low Low

Conditions for Running the DTCs

P0112, P0113, and P0114

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 The ignition is ON, or the engine is running.
 The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTCs

P0112

The ECM detects that the IAT sensor signal is warmer than 149°C (300°F) for at least 5 s.

P0113

NOTE: The scan tool display range is between -40 and +150°C (-40 and +302°F).

The ECM detects that the IAT sensor signal is colder than -60°C (-76°F) for at least 5 s.

P0114

The ECM detects that the IAT sensor signal is intermittent or has abruptly changed for at least 5 s.

Action Taken When the DTCs Set

 DTCs P0112, P0113, and P0114 are Type B DTCs.

 The ECM commands the cooling fans ON.

Conditions for Clearing the DTCs

DTCs P0112, P0113, and P0114 are Type B DTCs.

Diagnostic Aids

With the ignition ON, when the engine is cold and not running, a properly functioning IAT sensor 1 will
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

gradually increase the scan tool IAT Sensor 1 parameter. This is due to the heat that is generated by the
multifunction intake air sensor internal heating elements.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

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 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 3 and 4 of this verification procedure only if the
ignition has been OFF for 8 hours or more.

3. Ignition ON.
4. Verify the following scan tool parameters are within 25°C (45°F) of each other.
 Start-Up IAT Sensor 1
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 IAT Sensor 2
 IAT Sensor 3; where equipped
 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

If within 25°C (45°F)



5. Engine idling, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
 IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3; where equipped

 If not between: -38 and +149°C (-36 and +300°F)

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Refer to Circuit System Testing below.

If between: -38 and +149°C (-36 and +300°F)

6. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
7. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Ignition OFF, and all vehicle systems OFF, it may take up to 2 min. for all vehicle systems to power
down. Disconnect the harness connector at the B75C Multifunction Intake Air sensor.
2. Test for less than 2 ohms between the low reference circuit terminal 7 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

3. Ignition ON, test for 4.8-5.2 V between signal circuit terminal 8 and ground.
 If less than 4.8 V
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

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1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

4. Ignition ON, verify the scan tool IAT Sensor 1 parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F).

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 8 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

5. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 8 and the low reference
circuit terminal 7.
6. Verify the scan tool IAT Sensor 1 parameter is warmer than 148°C (298°F).
 If colder than 148°C (298°F).

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If less than 2 ohms, replace the K20 Engine Control Module.
 If warmer than 148°C (298°F).

7. Test or replace the B75C Multifunction Intake Air sensor.

Component Testing

Multifunction Intake Air Sensor

1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 1 by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch

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Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
Bosch Sensors. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B75C Multifunction Intake Air sensor.

If within the specified range.



3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P0116

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0116

Engine Coolant Temperature (ECT) Sensor Performance

Diagnostic Fault Information

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
Signal Circuit P0117 P0118 P0118* P0116, P0119, P0128
Low Reference - P0118 P0118* P0116, P0128
*ECM or sensor damage may occur if the circuit is shorted to B+

Typical Scan Tool Data

ECT Sensor
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine operating in closed loop
Parameter Normal Range: Varies with coolant temperature
Signal 140°C (284°F) -40°C (-40°F) -40°C (-40°F)

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Low Reference - -40°C (-40°F) -40°C (-40°F)

Circuit/System Description

The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine
coolant. The engine control module (ECM) supplies 5 V to the ECT sensor signal circuit and a ground for the
low reference circuit.

The purpose of this diagnostic is to determine if the input from the ECT sensor is skewed warmer than normal.
The internal clock of the ECM will record the amount of time the engine is OFF. If the required engine OFF
time is met at start-up, the ECM will compare the temperature difference between the actual measured ECT and
a calibrated ECT model. The information for this model is derived from the previous drive cycle and includes
the accumulated mass air flow (MAF), the engine run time, the ambient air temperature and the ECT at the end
of the drive cycle.

If the ECM detects that the temperature difference between the measured and modeled ECT is not within an
acceptable operating range of each other, then the ECM will continue to run this diagnostic to determine if a
block heater was active during the engine OFF time.

Conditions for Running the DTC

 The ignition is ON, or the engine is running.

 DTCs P0111, P0112, P0113, P0117, P0118, P0722, P0723 or P2610 are not set.
 The ignition has been off for greater than 8 h before the engine is started.
 This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

P0116 Engine Running, Sensor Signal Stuck Test

 The ECM detects that the ECT sensor signal has abruptly changed a minimum of 20°C (68°F) warmer
than intake air temperature (IAT) at engine start.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The measured ECT is greater than measured IAT at engine start, is not within range of the calibrated
model.

P0116 Engine Running, Sensor Within Range Test

 The ECT at engine start is not within range of the calibrated model.
 The ECT is greater than measured IAT at engine start, is not within range of the calibrated model.

Action Taken When the DTC Sets

 DTC P0116 is a Type B DTC.

 The cooling fans will be commanded ON.
 The A/C compressor will be commanded OFF.

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Conditions for Clearing the DTC

DTC P0116 is a Type B DTC.

Diagnostic Aids

 Inspect the ECT sensor terminals for corrosion and for engine coolant leaking through the sensor. Engine
coolant that is leaking through the sensor will create a high resistance short to ground. This condition
results in less voltage on the ECT sensor signal circuit, which is interpreted by the ECM as a warmer
ECT.
 An intake air temperature (IAT) sensor that is biased colder at various ambient temperatures due to
greater resistance than is normal will increase the range between these 2 sensors. Measure and record the
resistance of the IAT sensor at various ambient temperatures, then compare those measurements to the
Temperature vs. Resistance table. Refer to Temperature Versus Resistance (ECT) .
 Test the ECT sensor at various temperature levels in order to evaluate the possibility of a biased sensor. A
sensor that is biased warmer can result in a driveability condition. Refer to Temperature Versus
Resistance (ECT) .
 A slight to moderate resistance in the IAT sensor signal circuit or low reference circuit will increase the
range between these two sensors. This condition results in a greater voltage on the IAT sensor signal
circuit, which is interpreted by the ECM as a colder IAT.
 If the condition is intermittent, allow the vehicle to sit for greater than 8 h with the ignition OFF, may
help isolate the condition. Compare the scan tool and ECT Sensor temperature sensor values at ignition
on. The Radiator Coolant Temperature Sensor and the ECT Sensor values should display within 3°C (5°
F).

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

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Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0112, P0113, P0117, or
P0118 are not set.
 If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

2. Ignition off, inspect the cooling system surge tank for the proper coolant level. Refer to Loss of Coolant ,
and Cooling System Draining and Filling (Static Fill) , Cooling System Draining and Filling (GE-
47716 Fill) .
3. If the ignition has been OFF for 8 h or greater, observe the scan tool parameters list below. The
temperatures should be within 20°C (68°F).
 ECT Sensor

 IAT Sensor

4. Engine running, observe the ECT Sensor parameter. The reading should be between -39 to +120°C (-38
to +148°F) depending on the current ambient temperature and the vehicle operating conditions.
5. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may
also operate the vehicle within the conditions that you observed from the freeze frame/failure records
data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the B34 Engine Coolant Temperature Sensor.
2. Inspect the B34 Engine Coolant Temperature Sensor terminals for corrosion and for engine coolant
leaking through the sensor.
3. Ignition OFF for 1 min, test for less than 5 ohms between the low reference circuit terminal 2 and ground.
 If greater than the specified range, test the low reference circuit for an open/high resistance. If the
circuit tests normal, replace the K20 Engine Control Module.
4. Ignition ON, verify the scan tool ECT Sensor parameter is colder than -39°C (-38°F).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If greater than the specified range, test the signal circuit terminal 1 for a short to ground. If the
circuit tests normal, replace the K20 Engine Control Module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the low reference circuit
terminal 2. Verify the scan tool ECT Sensor parameter is greater than 130°C (266°F).
 If less than the specified range, test the signal circuit for a short to voltage or an open/high
resistance. If the circuit tests normal, replace the K20 Engine Control Module.
6. If all circuits test normal, test or replace the B34 Engine Coolant Temperature Sensor.

Component Testing

Static Test

1. Ignition off, disconnect the harness connector at the B34 Engine Coolant Temperature Sensor.

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NOTE: A thermometer can be used to test the sensor off vehicle.

2. Test the B34 Engine Coolant Temperature Sensor by varying the sensor temperature while monitoring the
sensor resistance. Compare the readings with the Temperature Versus Resistance (ECT) table and
verify that the resistance is within 5% of the specification.
 If not within the specified range, replace the B34 Engine Coolant Temperature Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Engine Coolant Temperature Sensor Replacement (Radiator) , Engine Coolant Temperature

Sensor Replacement (Water Outlet)
 Control Module References for ECM replacement, programming and setup

DTC P0117, P0118, OR P0119

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

DTC P0119

Engine Coolant Temperature (ECT) Sensor Circuit Intermittent

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0118*,
Signal P0117 P0118, P0119 P0116, P0128
P0119
Low Reference - P0118, P0119 - P0128
*ECM or sensor damage may occur if the circuit is shorted to B+.

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Typical Scan Tool Data

ECT Sensor
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: Varies with engine coolant temperature
Signal 140°C (284°F) -40°C (-40°F) -40°C (-40°F)
Low Reference - -40°C (-40°F) -

Circuit/System Description

The engine coolant temperature (ECT) sensor is a variable resistor that measures the temperature of the engine
coolant. The engine control module (ECM) supplies 5 V to the ECT sensor signal circuit and a ground for the
low reference circuit. This diagnostic checks for an open, short to ground or an intermittent circuit condition
between the ECM and ECT sensor.

Conditions for Running the DTC

P0117

 The ignition is ON.

OR

 The engine is running for greater than 10 s.

OR

 The engine run time is less than 10 s when the intake air temperature (IAT) is colder than 50°C (122°F).
 This DTC runs continuously within the enabling conditions.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P0118

 The ignition is ON.

OR

 The engine is running for greater than 10 s.

OR

 The engine run time is less than 10 s when the IAT is warmer than 0°C (32°F).
 This DTC runs continuously within the enabling conditions.

P0119

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 This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

P0117

The ECM detects that the ECT is warmer than 149°C (300°F) for greater than 5 s.

P0118

The ECM detects that the ECT is colder than -39°C (-38°F) for greater than 5 s.

P0119

The ECM detects that the ECT is intermittent or has abruptly changed for greater than 4 seconds.

Action Taken When the DTC Sets

 DTC P0117, P0118 or P0119 are a Type B DTC.

 The cooling fans will be commanded ON.
 The Engine Coolant Temperature Gauge is inoperative.
 The AC compressor will be commanded OFF.

Conditions for Clearing the DTC

DTC P0117, P0118 or P0119 are a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

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Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool ECT Sensor parameter is between -39 to + 120°C (-38 to +248°F) and changes with
engine run time.
 If not between -39 to + 120°C (-38 to +248°F) or does not change

Refer to Circuit/System Testing below.

If between -39 to + 120°C (-38 to +248°F) and changes

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



5. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B34 Engine Coolant
Temperature Sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between the low reference circuit terminal 2 and ground.
 If 5 ohms or greater
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.
4. Verify the scan tool ECT Sensor parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F)

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 1 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

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 If infinite resistance, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F)

5. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the low reference circuit
terminal 2.
6. Verify the scan tool ECT sensor parameter is warmer than 137°C (280°F).
 If colder than 137°C (280°F)

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 137°C (280°F)

7. Test or replace the B34 Engine Coolant Temperature Sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the B34 Engine Coolant Temperature Sensor.
2. Test the ECT sensor by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance (ECT) table. The resistance values should be in
range of the table values.
 If not within the specified range

 Replace the B34 Engine Coolant Temperature Sensor.

 If within the specified range

3. Test for infinite resistance between each terminal and the sensor housing.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If less than infinite resistance

Replace the B34 Engine Coolant Temperature Sensor.

If infinite resistance


4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Engine Coolant Temperature Sensor Replacement (Radiator) , Engine Coolant Temperature

Sensor Replacement (Water Outlet)
 Engine Control Module Replacement engine control module replacement, programming, and setup

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DTC P0121-P0123, P0222, P0223, OR P2135 (LUV)

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0121

Throttle Position Sensor 1 Performance

DTC P0122

Throttle Position Sensor 1 Circuit Low Voltage

DTC P0123

Throttle Position Sensor 1 Circuit High Voltage

DTC P0222

Throttle Position Sensor 2 Circuit Low Voltage

DTC P0223

Throttle Position Sensor 2 Circuit High Voltage

DTC P2135
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Throttle Position Sensors 1-2 Not Plausible

Diagnostic Fault Information

Short to Short to
Circuit Ground High Resistance Open Voltage Signal Performance
P0122, P06A3,
5 V Reference P06A3 P2135 P0068, P0121
P0222 P2135
Throttle Position Sensor
P0122 P2135 P0122 P0123 P0068, P0121
1 Signal
Throttle Position Sensor
P0222 P2135 P0223 P0223 P0068, P0121
2 Signal
P0123,
Low Reference - P2135 - P0068, P0121
P0223

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Typical Scan Tool Data

Throttle Position Sensor 1

Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Normal Range: 4.75-0.35 V
5 V Reference 0V 0V 5V
Throttle Position Sensor 1 Signal 0V 0V 5V
Low Reference - 4-5 V -

Throttle Position Sensor 2

Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine running at various operating conditions
Parameter Normal Range: 0.35-4.65 V
5 V Reference 0V 0V 5V
Throttle Position Sensor 2 Signal 0V 5V 5V
Low Reference - 5V -

Circuit/System Description

The throttle body assembly contains 2 throttle position sensors. The throttle position sensors are mounted to the
throttle body assembly and are not serviceable. The throttle position sensors provide a signal voltage that
changes relative to throttle blade angle. The engine control module (ECM) supplies the throttle position sensors
with a common 5 V reference circuit, a common low reference circuit, and two independent signal circuits.

The throttle position sensors have opposite functionality. throttle position sensor 1 signal voltage decreases and
throttle position sensor 2 signal voltage increases as the accelerator pedal increases to wide open throttle
(WOT).

Conditions for Running the DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P0122, P0123, P0222, and P0223

 DTC P06A3 is not set.

 The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.
 The ignition is ON or the engine is operating.
 DTC P0122, P0123, P0222, P0223 run continuously when the above conditions are met.

P0121

 No Active or Pending DTCs.

 The engine speed is between 400-7, 000 RPM.
 The engine coolant temperature (ECT) is between -7 to +125°C (19-257°F).
 The intake air temperature (IAT) is between -20 to +125°C (-4 to +257°F).

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 DTC P0121 runs continuously when the above conditions are met.

P2135

 DTC P0122, P0123, P0222, P0223, or P06A3 is not set.

 The run/crank or powertrain relay voltage is greater than 6 V and reduced power is not active.
 The ignition is ON or the engine is operating.
 DTC P2135 runs continuously when the above conditions are met.

Conditions for Setting the DTC

P0121

The ECM detects the throttle position sensor is stuck within range for greater than 1 s.

P0122

The ECM detects the throttle position sensor 1 voltage is less than 0.325 V for greater than 1 s.

P0123

The ECM detects the throttle position sensor 1 voltage is greater than 4.75 V for greater than 1 s.

P0222

The ECM detects that the throttle position sensor 2 voltage is less than 0.25 V for greater than 1 s.

P0223

The ECM detects the throttle position sensor 2 voltage is greater than 4.59 V for greater than 1 s.

P2135
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The ECM detects the difference between the throttle position sensor 1 and throttle position sensor 2 exceeds a
predetermined value for greater than 1 s.

Action Taken When the DTC Sets

 DTC P0122, P0123, P0222, P0223, and P2135 are Type A DTCs.
 DTC P0121 is a Type B DTC.
 The ECM commands the TAC system to operate in the Reduced Engine Power mode.
 A message center or an indicator displays Reduced Engine Power.
 Under certain conditions the control module commands the engine OFF.

Conditions for Clearing the MIL/DTC

 DTCs P0122, P0123, P0222, P0223, and P2135 are Type A DTCs.

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 DTC P0121 is a Type B DTC.

Diagnostic Aids

 A high resistance condition on the throttle position and throttle actuator control circuits could cause a
DTC to set.
 If the accelerator pedal is pressed to the wide open throttle position, the throttle blade angle or Throttle
Position angle is limited to less than 40 percent.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Throttle Actuator Control (TAC) System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. If you were sent here from DTC P0068, P0101, P0106, or P1101 refer to Circuit/System Testing below.
3. Verify that DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

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If none of the DTCs are set
4. Verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90 %.
 90 % or greater

Refer to Throttle Body Inspection and Cleaning .

If less than 90 %

5. Verify the scan tool Throttle Position Sensor 1 and Throttle Position Sensor 2 voltage parameters are
between 1.0-4.0 V and change with accelerator pedal input.
 If not between 1.0-4.0 V or does not change

Refer to Circuit/System Testing below

If between 1.0-4.0 V and changes

6. Verify the scan tool Throttle Position Sensor 1 and 2 Agree/Disagree parameter displays Agree while
performing the Throttle Sweep Test with a scan tool.
 If Disagree

Refer to Circuit/System Testing below

If Agree
7. Determine the current vehicle testing altitude.
8. Verify the scan tool MAP Sensor pressure parameter is within range specified in the Altitude Versus
Barometric Pressure table.
 The MAP Sensor pressure is not in range

Refer to DTC P0106.

 The MAP Sensor pressure is within range

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

9. Engine idling.
10. Verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 psi) and changes with
accelerator pedal input.
 If not between 26-52 kPa (3.8-7.5 psi) or does not change

Refer to DTC P0106.

 If between 26-52 kPa (3.8-7.5 psi) and changes

11. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is
increased and decreased while performing the actions listed below.
1. Engine idling
2. Perform the scan tool snapshot function.
3. Increase the engine speed slowly to 3, 000 RPM and then back to idle.

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4. Exit from the scan tool snapshot and review the data.
5. Observe the MAF Sensor parameter frame by frame with a scan tool.
 The MAF Sensor parameter does not change smoothly and gradually

Refer to DTC P0101.

 The MAF Sensor parameter changes smoothly and gradually

12. Verify the scan tool Boost Pressure Sensor pressure and BARO parameters are within 3 kPa (0.4 psi).
 The parameters are not within 3 kPa (0.4 psi)

Refer to DTC P0236.

 The parameters are within 3 kPa (0.4 psi)

13. Verify the scan tool MAP Sensor parameter and the Boost Pressure Sensor parameter are within 20 kPa
(2.9 psi) during a WOT acceleration at the time of the 1-2 shift.
 The parameters are not within 20 kPa (2.9 psi)

Refer to DTC P0236.

 The parameters are within 20 kPa (2.9 psi)

14. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
15. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below

If the DTC does not set

16. All OK
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Testing

NOTE: Disconnecting the throttle body harness connector causes additional

DTCs to set.

1. Ignition OFF, and all vehicle systems OFF, disconnect the harness connector at Q38 Throttle Body. It
may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between the low reference circuit terminal C and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

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 If less than 5 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal E and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Ignition ON.
6. Test for less than 1 V between the throttle position sensor 1 signal circuit terminal D and ground.
 If 1.0 V or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If 1.0 V or less

7. Install a 3 A fused jumper wire between throttle position sensor 1 signal circuit terminal D and the 5 V
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

reference circuit terminal E.

8. Verify the scan tool throttle position sensor 1 voltage parameter is greater than 4.8 V.
 If 4.8 V or less

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If 4.8 or greater

9. Test for 4.8-5.2 V between the throttle position sensor 2 signal circuit terminal F and ground.

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 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

10. Test or replace the Q38 Throttle Body.

Repair Instructions

 Throttle Body Assembly Replacement

 Control Module References for engine control module replacement, programming, and setup

Repair Verification

1. Install any components that have been removed or replaced during diagnosis.
2. Perform any adjustments, programming or setup procedures that are required when a component is
removed or replaced.
3. Clear the DTCs with a scan tool.
4. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

down.
5. Ignition ON.
6. Verify the Throttle Position Sensors 1 and 2 Agree/Disagree parameter displays Agree while performing
the Throttle Sweep Test with a scan tool.
 If Disagree

Test or replace the Q38 Throttle Body assembly.

 If Agree
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze
Frame/Failure Records, if applicable, in order to verify the DTC does not set.
 If DTC sets

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Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If DTC does not set



8. All OK

DTC P0128

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0128

Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

Circuit/System Description

The engine control module (ECM) monitors the temperature of the engine coolant for engine control and
enabling criteria for some diagnostics. The amount of air flow into an engine is proportional to the amount of
heat an engine generates. The ECM monitors the amount of air flow into the engine to calculate engine coolant
temperature (ECT). The ECM uses the calculated temperature to determine if the engine has warmed up to the
thermostat regulating temperature. If the ECT does not increase normally or does not reach the thermostat
regulating temperature, diagnostics that use the ECT as enabling criteria, may not run when expected. If the
ECT fails to reach the thermostat regulating temperature, before a predetermined amount of air flow enters the
engine, the DTC sets.

Conditions for Running the DTC

 DTCs P00B3, P00B6, P0101, P0102, P0103, P0111, P0112, P0113, P0116, P0117 or P0118 are not set.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Average Airflow is greater than 11 g/s.

 Thermostat Heater duty commanded cycle 10%.
 Engine not run time 30 min
 Engine run time between 22 s and 30 min
 The DTC runs once per ignition key cycle.

Conditions for Setting the DTC

The ECM detects that the actual engine coolant temperature is 26°C (78.8°F) colder than the commanded
engine coolant temperature while the IAT is between 10-65°C (50-149°F)

or

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The ECM detects that the actual engine coolant temperature is 46°C (114.8°F) colder than the commanded
engine coolant temperature while the IAT is between -7°C to +10°C (-19.4 to+50°F)

Action Taken When the DTC Sets

DTC P0128 is a Type B DTC.

Conditions for Clearing the DTC

DTC P0128 is a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Control Module References for scan tool information

Circuit/System Verification

1. Verify the cooling system is filled to the correct coolant level. Refer to Loss of Coolant , and Cooling
System Draining and Filling (Static Fill) , Cooling System Draining and Filling (GE-47716 Fill) .
 If the coolant level is not correct

Repair as necessary

If the coolant level is correct

2. Verify the DTC P00B7, P0116, P0117, P0118, P0597, P0598, or P0599 is not set.
 If a DTC is set

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Refer to Diagnostic Trouble Code (DTC) List - Vehicle

If a DTC is not set

3. Engine running for 15 min with the A/C OFF, increase the engine speed to 3, 000 RPM.
4. Verify the scan tool ECT Sensor parameter is greater than 79°C (174°F) when commanding the Engine
Coolant Thermostat Heater to 0%.
 If less than 79°C (174°F)

Replace the E41 Engine Coolant Thermostat Heater.

If greater than 79°C (174°F)

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify the DTC does not set.
 If the DTC sets

Refer to Step 1.

If the DTC does not set



7. All OK.

Component Testing

1. Ignition OFF, disconnect the B34 Engine Coolant Temperature Sensor harness connector at the sensor.
2. Test for refer to Temperature Versus Resistance (ECT) Temperature Versus Resistance between the
signal circuit terminal 1 and the low reference terminal 2.
 If the temperature versus resistance are not within the specified ranges

Replace the B34 Engine Coolant Temperature Sensor.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If the temperature versus resistance are within the specified ranges
3. Test for infinite resistance between each terminal and the sensor housing.
 If less than infinite resistance

Replace the B34 Engine Coolant Temperature Sensor.

If infinite resistance


4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Engine Coolant Temperature Sensor Replacement (Radiator) , Engine Coolant Temperature

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
Sensor Replacement (Water Outlet)
 Engine Coolant Thermostat Housing Removal
 Control Module References for engine control module replacement, programming and setup.

DTC P0131, P0132, P0134, P0137, P0138, OR P0140

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0131

HO2S Circuit Low Voltage Sensor 1

DTC P0132

HO2S Circuit High Voltage Sensor 1

DTC P0134

HO2S Circuit Insufficient Activity Sensor 1

DTC P0137

HO2S Circuit Low Voltage Sensor 2

DTC P0138
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

HO2S Circuit High Voltage Sensor 2

DTC P0140

HO2S Circuit Insufficient Activity Sensor 2

Diagnostic Fault Information

HO2S 1 or 2
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P0132, P0134, P0132, P0134,
HO2S High Signal P0131, P0137 P0133, P1133
P0138, P0140 P0138, P0140
P0131, P0137, P0132, P0134, P0132, P0134,
HO2S Low Signal P0133, P1133

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P0171 P0138, P0140 P0138, P0140

Typical Scan Tool Data

HO2S 1 or 2
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine operating in Closed Loop
Parameter Normal Range: 200-800 mV
High Signal 0 mV 1, 700-2, 100 mV 1, 700-2, 100 mV
Low Signal - 1, 700-2, 100 mV 1, 700-2, 100 mV

Circuit/System Description

The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the
oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is
started, the control module operates in an open loop mode, ignoring the HO2S signal voltage while calculating
the air to fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of
0-1 275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, closed loop is
entered. The control module uses the HO2S voltage to determine the air to fuel ratio. An HO2S voltage that
increases toward 1 000 mV indicates a rich fuel mixture. An HO2S voltage that decreases toward 0 mV
indicates a lean fuel mixture.

The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster.
This allows the system to enter closed loop earlier and the control module to calculate the air to fuel ratio
sooner.

Conditions for Running the DTC

DTC P0131 or P0137

 DTCs P0068, P0106, P0107, P0108, P0121, P0122, P0123, P0222, P0223, P0442, P0443, P0446, P0449,
P0451, P0452, P0453, P0454, P0455, P0496, P1101, P1516, P2101, P2119, P2135 and P2176 are not set.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The ignition voltage is between 10-32 V.

 The fuel level is greater than 10%.
 The mass air flow (MAF) is between 2-60 g/s.
 The fuel composition is less than 87% ethanol.
 The fuel system is in Closed Loop.
 The vehicle is not decelerating.
 The DTC P0131 runs continuously when the above conditions are met for greater than 3 s.
 The DTC P0137 runs continuously when the above conditions are met for greater than 5 s.

DTC P0132 or P0138

 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0121, P0122, P0123, P0222, P0223, P0442,

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P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0496, P1101, P1516, P2101, P2119, P2135
and P2176 are not set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
 The fuel composition is less than 87% ethanol.
 The fuel system is in Closed Loop.
 Engine run time is greater than 5 s.
 The vehicle is not decelerating.
 The DTC P0132 and P0138 run continuously when the above conditions are met for greater than 3 s.

DTC P0134 or P0140

 DTCs P0068, P0101, P0102, P0103, P0121, P0122, P0123, P0222, P0223, P1516, P2101, P2119, P2135
and P2176 are not set.
 The ignition voltage is between 10-32 V.
 HO2S heater warm up is finished.
 Engine run time is greater than 5 s.
 The engine has been operating for greater than 50 s.
 The fuel composition is less than 87% ethanol.

Conditions for Setting the DTC

P0131

The engine control module (ECM) detects that the heated oxygen sensor (HO2S) voltage is less than 20 mV for
greater than 38 s.

P0137

The engine control module (ECM) detects that the heated oxygen sensor (HO2S) is shorted to ground for
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

greater than 38 s.

P0132 or P0138

The ECM detects that the heated oxygen sensor (HO2S) voltage is greater than 1 050 mV for greater than 10 s.

P0134 or P0140

The ECM detects that the heated oxygen sensor (HO2S) voltage is greater than 1 700 mV for greater than 10 s.

Action Taken When the DTC Sets

DTCs P0131, P0132, P0134, P0137, P0138 and P0140 are Type B DTCs.

Conditions for Clearing the DTC

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DTCs P0131, P0132, P0134, P0137, P0138 and P0140 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON
2. Verify no HO2S heater DTCs are set.
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 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If a DTC is not set

3. Engine running.
4. Verify the scan tool HO2S 1 or 2 parameters are between 50-1, 050 mV.
 If not between 50-1, 050 mV

Refer to Circuit/System Testing below.

If between 50-1, 050 mV

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within

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the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



7. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the appropriate B52 Heated Oxygen Sensor
harness connector. It may take up to 2 minutes for all vehicle systems to power down. Ignition ON.
2. Test for 1.7-3.0 V between the high signal circuit terminal 4 and ground.
 If less than 1.7 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the high signal circuit terminal 4 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the high signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 3 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module. Ignition ON.
2. Test for less than 1 V between the high signal circuit terminal 4 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 1.7-3.0 V
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3. Verify the scan tool HO2S 1 or 2 parameter is between 1.73.0 V.

 If less than 1.7 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module. Ignition ON.
2. Test for infinite resistance between the low signal circuit terminal 3 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If greater than 1.7 V

4. Connect a 3 A fused jumper wire between the high signal circuit terminal 4 and the low signal circuit
terminal 3.

NOTE: The low signal circuit is tied to a pull-up circuit within the engine control
module. A voltage of 0.0-1.1 V on the low signal circuit is normal.

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5. Verify the scan tool HO2S 1 or 2 parameter displays 0.0 V.
 If greater than 0.0 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module. Ignition ON.
2. Test for less than 2 ohms in the low signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms

3. Test for less than 1 V between the low signal circuit terminal 3 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If 0.0 V

6. Verify none of the conditions listed below exist:

 Water intrusion in the B52 HO2S harness connector

 Low or high fuel system pressure-Refer to Fuel System Diagnosis .

 Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis .

 Fuel saturation of the evaporative emission (EVAP) canister

 Exhaust leaks

 Engine vacuum leaks

 If any of the conditions exist

Repair as necessary.

If none of the conditions exist

7. Test or replace the B52 Heated Oxygen Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Heated Oxygen Sensor Replacement - Sensor 1

 Heated Oxygen Sensor Replacement - Sensor 2
 Perform the scan tool Heated Oxygen Sensor Resistance Learn Reset after replacing an HO2S.
 Control Module References for ECM replacement, programming and setup

DTC P0133, P013A, P013B, P013E, P013F, P015A, P015B, P2270, OR P2271

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provide an overview of each diagnostic category.

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DTC Descriptors

DTC P0133

HO2S Slow Response Sensor 1

DTC P013A

HO2S Slow Response Rich to Lean Sensor 2

DTC P013B

HO2S Slow Response Lean to Rich Sensor 2

DTC P013E

HO2S Delayed Response Rich to Lean Sensor 2

DTC P013F

HO2S Delayed Response Lean to Rich Sensor 2

DTC P015A

HO2S Delayed Response Rich to Lean Sensor 1

DTC P015B

HO2S Delayed Response Lean to Rich Sensor 1

DTC P2270

HO2S Signal Stuck Lean Sensor 2

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P2271

HO2S Signal Stuck Rich Sensor 2

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0132, P0134, P0132, P0134,
HO2S High Signal P0131, P0137 P0133
P0138, P0140 P0138, P0140
P0132, P0134, P0132, P0134,
HO2S Low Signal P0137 P0133
P0138, P0140 P0138, P0140

Typical Scan Tool Data

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HO2S 1 or 2
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Engine operating in Closed Loop
Parameter Normal Range: 200-800 mV
HO2S 1 or 2 Signal 0 mV 1 700-2 100 mV 1 700-2 100 mV
HO2S 1 or 2 Low Signal - 1 700-2 100 mV 1 700-2 100 mV

Circuit/System Description

The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the
oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is
started, the control module operates in an open loop mode, ignoring the HO2S signal voltage while calculating
the air to fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of
0-1 275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, closed loop is
entered. The control module uses the HO2S voltage to determine the air to fuel ratio. An HO2S voltage that
increases toward 1 000 mV indicates a rich fuel mixture. An HO2S voltage that decreases toward 0 mV
indicates a lean fuel mixture.

The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster.
This allows the system to enter closed loop earlier and the control module to calculate the air to fuel ratio
sooner.

Conditions for Running the DTC

DTC P0133

 DTCs P0068, P0096, P0097, P0098, P00B3, P00B4, P00B6, P00C7, P0101, P0102, P0103, P0106,
P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123,
P0128, P0131, P0132, P0134, P0201, P0202, P0203, P0204, P0222, P0223, P0300, P0442, P0443,
P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0496, P1101, P1516, P2101, P2119, P2135, P2176
and P2450 are not set.
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 The ignition voltage is between 10-32 V.

 The engine speed parameter is between 1 300-3 500 RPM.
 The engine coolant temperature (ECT) is hotter than 65°C (149°F).
 The intake air temperature (IAT) is hotter than -40°C (-40°F).
 The engine has been operating for greater than 100 s.
 The mass air flow (MAF) is between 10-35 g/s.
 The fuel system is in Closed Loop.
 The vehicle is not decelerating.
 The DTCs run continuously when the above conditions are met for greater than 1 s.

P013A

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 DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not
set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
 DTC P013B, P013E, P013F, P2270 and P2271 have run.
 DTC P013E and P2270 have passed.
 DTC P013A runs once per trip.

P013B

 DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not
set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
 DTC P013A, P013E, P013F, P2270 and P2271 have run.
 DTC P013F and P2271 have passed.
 DTC P013B runs once per trip.

P013E

 DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not
set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTC P013A, P013B, P013F, P2270 and P2271 have run.

 DTC P2270 have passed.
 DTC P013E runs once per trip.

P013F

 DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not
set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
 DTC P013A, P013B, P013E, P2270 and P2271 have run.

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 DTC P2270 and P2271 have passed.
 DTC P013F runs once per trip.

P015A and P015B

 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116, P0117,
P0118, P0119, P0121, P0122, P0123, P0128, P0131, P0132, P0134, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496,
P16F3, P2101 or P2135 are not set.
 The ignition voltage is between 10-32 V.
 The device controls are not active.
 The fuel level is greater than 10%.
 The HO2S heater is commanded ON for greater than 40 s.
 The engine coolant temperature (ECT) is hotter than 60°C (140°F).
 The intake air temperature (IAT) is hotter than -40°C (-40°F).
 The engine has been operating for greater than 150 s.
 The engine speed is between 1 550-3 500 RPM to initially enable the test.
 The vehicle speed is between 70-125 km/h (44-78 mph) to initially enable the test.
 The engine speed is between 1 350-3 650 RPM to keep the test enabled.
 The vehicle speed is between 65-130 km/h (41-81 mph) to keep the test enabled.
 The mass air flow (MAF) is between 2-20 g/s.
 The fuel system is in Closed Loop.
 The evaporative emission (EVAP) diagnostics are not in control of purge.
 The predicted catalytic converter temperature is between 550-900°C (1 022-1 652°F).
 DTC P015A runs once per trip, during the deceleration fuel cut-off (DFCO) mode, when the above
conditions are met.
 DTC P015B runs once per trip, during the fuel enrich mode, when the above conditions are met.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P2270

 DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not
set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
 The engine speed parameter is between 1 100-3 500 RPM.
 The mass air flow (MAF) is between 1-30 g/s.
 The fuel composition is less than 87% ethanol.
 The fuel system is in Closed Loop.
 DTC P013A, P013B, P013E, P013F, P2270 and P2271 have run.

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 DTC P2270 and P2271 have passed.
 DTC P2270 runs once per drive cycle when the above conditions are met for 5 s.

P2271

 DTCs P0068, P0096, P0097, P0098, P00B6, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0171, P0172, P0201, P0202,
P0203, P0204, P0222, P0223, P0300, P1101, P1516, P2096, P2097, P2101, P2119, P2135, P2176 are not
set.
 The ignition voltage is between 10-32 V.
 The fuel level is greater than 10%.
 The engine speed parameter is between 1 100-3 500 RPM.
 The mass air flow (MAF) is between 1-30 g/s.
 The fuel composition is less than 87% ethanol.
 The fuel system is in Closed Loop.
 DTC P013A, P013B, P013E, P013F and P2270 have run.
 DTC P013A, P013E and P2270 have passed.
 DTC P2270 runs once per drive cycle when the above conditions are met for 5 s.

Conditions for Setting the DTC

P0133

 The ECM detects that the HO2S 1 average response time is more than a calculated value.
 DTC P0133 sets within 60 s when the above condition is met.

P013A

The ECM detects that the accumulated mass air flow monitored during rich to lean transitions between 150-450
mV is more than 6 g.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P013B

The ECM detects that the accumulated mass air flow monitored during rich to lean transitions between 335-650
mV is more than 25 g.

P013E

The ECM detects that the Post O2 sensor voltage is greater than 450 mV and the accumulated mass air flow
monitored during the delayed Response Test is greater than 20 g.

P013F

The ECM detects that the Post O2 sensor voltage is less than 350 mV and the accumulated mass air flow
monitored during the delayed Response Test is greater than 70 g.

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P0140

The ECM detects that the heated oxygen sensor (HO2S) 2 parameter is greater than 1 700 mV.

P2270

 The ECM detects that the heated oxygen sensor (HO2S) 2 sensor cannot achieve voltage equal to or less
than 775 mV.

and

 The ECM detects that the accumulated mass air flow monitored during the Stuck Lean Voltage Test is
more than 38 g.

P2271

 The ECM detects that the heated oxygen sensor (HO2S) 2 sensor cannot achieve voltage equal to or less
than 100 mV.

and

 The ECM detects that the accumulated mass air flow monitored during the stuck rich voltage test is more
than 25 g.

Action Taken When the DTC Sets

 DTCs P0133, P0134, P013E, P013F, P0140, P2270 are P2271 Type B DTCs.
 DTCs P013A and P013B are Type A DTCs.

Conditions for Clearing the DTC

 DTCs P0133, P0134, P013E, P013F, P0140, P2270 are P2271 Type B DTCs.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTCs P013A and P013B are Type A DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

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 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify no HO2S heater DTCs are set
 If a HO2S heater DTC is set

Refer to DTC P0131, P0132, P0134, P0137, P0138, or P0140.

If no HO2S heater DTC is set

3. Allow the engine to reach operating temperature, engine running.
4. Verify the scan tool HO2S Sensor 1 or 2 voltage parameters are between 50-1 050 mV.
 If not between 50-1 050 mV

Refer to DTC P0131, P0132, P0134, P0137, P0138, or P0140.

If between 50-1 050 mV

5. Verify none of the following conditions exist:
 Lean or rich fuel injectors
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Water intrusion in the HO2S harness connector

 Low or high fuel system pressure-Refer to Fuel System Diagnosis .
 Fuel that is contaminated-Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 Fuel saturation of the evaporative emission (EVAP) canister
 Exhaust leaks
 Engine vacuum leaks
 Engine oil consumptions-Refer to Symptoms - Engine Cooling .
 Engine coolant consumption-Refer to Symptoms - Engine Cooling .
 If any of the above conditions exist

Repair as necessary.

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If none of the above conditions exist
6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
7. Verify the DTC does not set.
 If the DTC sets

Replace the B52 Heated Oxygen Sensor.

8. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Heated Oxygen Sensor Replacement - Sensor 1

 Heated Oxygen Sensor Replacement - Sensor 2
 Perform the scan tool Heated Oxygen Sensor Resistance Learn Reset after replacing a HO2S.
 Control Module References for ECM replacement, programming and setup

DTC P0171 OR P0172

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0171
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Fuel Trim System Lean

DTC P0172

Fuel Trim System Rich

Circuit/System Description

The engine control module (ECM) controls a Closed Loop air/fuel metering system in order to provide the best
possible combination of driveability, fuel economy, and emission control. The ECM monitors the heated
oxygen sensor (HO2S) signal voltage, and adjusts the fuel delivery based on the signal voltage while in Closed
Loop. A change made to the fuel delivery changes the long and short term fuel trim values. The short term fuel
trim values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling.
The long term fuel trim values change in response to trends in the short term fuel trim The long term fuel trim
makes coarse adjustments to fueling in order to re-center and restore control to short term fuel trim. The ideal

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fuel trim values are around 0 %. A positive fuel trim value indicates that the ECM is adding fuel in order to
compensate for a lean condition. A negative fuel trim value indicates that the ECM is reducing the amount of
fuel in order to compensate for a rich condition.

Conditions for Running the DTC

 DTCs P0030, P0053, P0101, P0102, P0103, P0106, P0107, P0108, P0131-P0135, P0201-P0204, P0300-
P0304, P0411, P0442, P0455, P0458, P0496, P0506, P0507, P1248, P1249, P124A, P124B, P2147,
P2148, P2150, P2151, P2153, P2154, P2156, P2157, P2227, P2228, P2229, P2230, P2440, or P2444 are
not set.
 The engine is in Closed Loop status.
 The catalyst monitor diagnostic intrusive test, post 02 diagnostic intrusive test, and EVAP diagnostic test
are not active.
 The engine coolant temperature (ECT) is between -20°C and +150°C (-4°F and +302°F).
 The intake air temperature (IAT) is between -20°C and +150°C (-4°F and +302°F).
 The manifold absolute pressure (MAP) is between 10-255 kPa (1.5-37 psi).
 The engine speed is between 400-7, 000 RPM.
 The mass air flow (MAF) is between 1-512 g/s.
 The barometric pressure (BARO) is greater than 70 kPa (10.2 psi).
 The fuel level is greater than 10 % and no fuel sensor fault is present.
 This diagnostic runs continuously when the above conditions have been met.

Conditions for Setting the DTC

 The average long term fuel trim weighted average value is greater or less than a calibrated value.
 The above condition is present for approximately 3 min after the Conditions for Running the DTC have
been met.

Action Taken When the DTC Sets

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTCs P0171 and P0172 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0171 and P0172 are Type B DTCs.

Diagnostic Aids

 Allow the engine to reach operating temperature. With the engine running, observe the HO2S parameter
with a scan tool. The HO2S value should vary from approximately 40 mV to approximately 900 mV, and
respond to fueling changes.
 The normal Short Term Fuel Trim and Long Term Fuel Trim parameters should be between +10 and -10
% with 0 % the optimum, with the engine running at operating temperature.
 It is very unlikely that an HO2S will cause this DTC to set without the occurrence of the circuit related

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HO2S DTCs. Do not replace an HO2S to address this DTC without first performing all the steps in
Circuit/System Verification.
 Any un-metered air into the engine causes this DTC to set. Thoroughly inspect all areas of the engine for
vacuum leaks.
 A MAF sensor condition can cause this DTC without setting a MAF DTC. If there is a MAF sensor
condition, the MAF sensor parameters will appear to be within range.
 Inspect the air filter for being the correct one for this application. Make sure that the engine oil fill cap is
in place and that it is tight. Verify that the engine oil dip stick is fully seated.
 Certain aftermarket air filters may cause a DTC to set.
 Certain aftermarket air induction systems or modifications to the air induction system may cause a DTC
to set.
 Certain aftermarket exhaust system components may cause a DTC to set.

Reference Information

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition ON.
2. Verify no other DTCs are set.
 If any other DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If no other DTCs are set

3. Verify DTC P0171 or P0172 is not set.
 If a DTC is set

Refer to Circuit/System Testing below

If no DTC is set

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4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed in the Freeze Frame/Failure Records data.
5. Verify DTC P0171 or P0172 is not set.
 If any of the DTCs set

Refer to Circuit/System Testing below

If none of the DTCs set



6. All OK.

Circuit/System Testing

1. Ignition ON.
2. Verify the manifold absolute pressure sensor is within the range specified for your altitude. Refer to
Altitude Versus Barometric Pressure
 If not within the specified range

Refer to DTC P0106

If within the specified range

3. Engine running, allow the engine to reach operating temperature.
4. Verify the Long Term Fuel Trim parameter is between -30 % and +30 %.
 If not within the specified range, verify that none of the conditions listed below exist:

P0171

 Mass air flow (MAF) sensor signal skewed. If the Short Term Fuel Trim parameter changes greater
than 20 % when the MAF sensor is disconnected, refer to DTC P0101.
 Fuel contamination. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 Missing, restricted, or leaking exhaust components. Refer to Symptoms - Engine Exhaust .
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Malfunctioning fuel injectors. Refer to Fuel Injector Diagnosis .

 Split, kinked, or improperly connected vacuum hoses
 Insufficient fuel in the tank
 Low fuel pressure. Refer to Fuel System Diagnosis .
 Vacuum leaks at the intake manifold, the throttle body, and the injector O-rings.
 Leaks in the air induction system and the air intake ducts
 Missing air filter element
 Cracked EVAP canister
 Evaporative pipes obstructed or leaking
 Leaks in the crankcase ventilation system

P0172

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 Mass air flow (MAF) sensor signal skewed. If the Short Term Fuel Trim parameters for both banks
changes greater than 20 % when the MAF sensor is disconnected, refer to DTC P0101.
 Fuel contamination. Refer to Alcohol/Contaminants-in-Fuel Diagnosis .
 Missing, restricted, or leaking exhaust components. Refer to Symptoms - Engine Exhaust .
 Malfunctioning fuel injectors. Refer to Fuel Injector Diagnosis
 Collapsed or restricted air intake duct
 Excessive fuel pressure. Refer to Fuel System Diagnosis
 Dirty or restricted air filter
 Objects blocking the throttle body
 Improper operation of the evaporative emissions control system
 Excessive fuel in the crankcase. Change the engine oil as necessary.
 If a condition is found

Repair as necessary.

 If no condition is found
5. Test the engine for a mechanical condition. Refer to Symptoms - Engine Mechanical .

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

DTC P018B-P018D

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC Descriptors

DTC P018B

Fuel Pressure Sensor Performance

DTC P018C

Fuel Pressure Sensor Circuit Low Voltage

DTC P018D

Fuel Pressure Sensor Circuit High Voltage

Diagnostic Fault Information

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Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P018C, P0641,
5 V Reference P018C P018D P06A6
P06A6
Signal P018C P018C P018D P018B
Low Reference - P018D - P06A6

Circuit/System Description

The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the
fuel line. The fuel pump control module monitors the voltage signal from the fuel pressure sensor.

Conditions for Running the DTC

 The engine is running.

 DTCs P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
 DTC P0641 has not failed this ignition cycle.
 Fuel pump control is enabled and the fuel pump control state is normal.
 The engine has been running for at least 5 seconds.

Conditions for Setting the DTC

The fuel pump control module does not detect a change in the fuel pressure of at least 30 kPa (4.4 psi) when the
fuel pump is operating. The fuel pressure sensor performance diagnostic provides a means to detect fuel
pressure sensor output that is stuck within the normal operating range of the sensor.

Action Taken When the DTC Sets

DTCs P018B, P018C and P018D are Type A DTCs.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Clearing the DTC

DTCs P018B, P018C and P018D are Type A DTCs.

Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the
information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and
Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

Reference Information

Schematic Reference

Engine Controls Schematics

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Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Testing for Intermittent Conditions and Poor Connections
 Connector Repairs
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Engine running.
2. Verify the scan tool Fuel Pressure Sensor Voltage parameter is between 0.2-4.8 V.
 If not between 0.2-4.8 V

Refer to Circuit/System Testing below.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If between 0.2-4.8 V


3. All OK.

Circuit/System Testing

NOTE: Verify that the fuel tank is not empty. Only perform this diagnostic if there
is at least 2 gallons of fuel in the fuel tank. Clear the DTC, and start and
run the engine. Verify that the DTC resets before proceeding with the
circuit system testing. If the DTC does not reset, refer to diagnostic aids.

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B47 Fuel Pressure
Sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.

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 If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If less than 10 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module, ignition
ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K27 Fuel Pump Control Module.

 If between 4.8-5.2 V

5. Verify the scan tool Fuel Pressure Sensor Voltage parameter is less than 1 V.
 If 1 V or greater

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module, ignition
ON.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

2. Test for less than 1 V between the signal circuit terminal 1 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K27 Fuel Pump Control Module.

 If less than 1 V

6. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal
3, wait 15 seconds.
7. Verify the scan tool Fuel Pressure Sensor Voltage parameter is greater than 4.8 V.
 If 4.8 V or less

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for infinite resistance between the signal circuit terminal 1 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

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3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If greater than 4.8 V

8. Test or replace the B47 Fuel Pressure Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for fuel pump control module replacement, programming and setup

DTC P0201, P0202, P0203, P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, OR P0271

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0201

Cylinder 1 Injector Control Circuit

DTC P0202

Cylinder 2 Injector Control Circuit

DTC P0203
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Cylinder 3 Injector Control Circuit

DTC P0204

Cylinder 4 Injector Control Circuit

DTC P0261

Cylinder 1 Injector Control Circuit Low Voltage

DTC P0262

Cylinder 1 Injector Control Circuit High Voltage

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DTC P0264

Cylinder 2 Injector Control Circuit Low Voltage

DTC P0265

Cylinder 2 Injector Control Circuit High Voltage

DTC P0267

Cylinder 3 Injector Control Circuit Low Voltage

DTC P0268

Cylinder 3 Injector Control Circuit High Voltage

DTC P0270

Cylinder 4 Injector Control Circuit Low Voltage

DTC P0271

Cylinder 4 Injector Control Circuit High Voltage

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0201*,
P0202*,
Ignition Voltage P0203*, P0201**, P0202**, - -
P0204*, P0203**, P0204**,
P0261*, P0261**, P0264**,
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P0264*, P0267**, P0270**

P0267*,
P0270*
Injector 1 Control P0201, P0261 P0201, P0300 P0262, P0300 -
Injector 2 Control P0202, P0264 P0202, P0300 P0265, P0300 -
Injector 3 Control P0203, P0267 P0203, P0300 P0268, P0300 -
Injector 4 Control P0204, P0270 P0204, P0300 P0271, P0300 -
* Open fuse, cranks no start.
** Cranks no start if the condition is between the fuse and the splice.

Circuit/System Description

The engine control module (ECM) enables the appropriate fuel injector pulse for each cylinder. Ignition voltage
is supplied to the fuel injectors. The ECM controls each fuel injector by grounding the control circuit via a solid

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state device called a driver. The ECM monitors the status of each driver. If the ECM detects an incorrect
voltage for the commanded state of the driver, a fuel injector control circuit DTC sets.

Conditions for Running the DTC

 The engine is running for greater than 1 s.

 The ignition voltage is greater than 11 V.
 The DTCs run continuously when the above conditions are met for greater than 5 s.

Conditions for Setting the DTC

The control module detects an incorrect voltage on the fuel injector control circuit for greater than 5 s.

Action Taken When the DTC Sets

DTCs P0201, P0202, P0203, P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, and P0271 are Type
B DTCs.

Conditions for Clearing the DTC

DTCs P0201, P0202, P0203, P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, and P0271 are Type
B DTCs.

Diagnostic Aids

Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector
Diagnosis .

Reference Information

Schematic Reference

Engine Controls Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

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Scan Tool Reference

Control Module References for scan tool information

Special Tool

CH 34730-2C Noid Light, if available

Circuit/System Verification

1. Engine cranking or running.

2. Verify the scan tool parameters listed below do not display Malfunction.
 Cylinder 1-4 Injector Control Circuit Low Voltage Test Status

 Cylinder 1-4 Injector Control Circuit Open Test Status

 Cylinder 1-4 Injector Control Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not displayed

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



5. All OK.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate Q17 Fuel Injector, ignition ON.
2. Verify a test lamp illuminates between the ignition circuit terminal 1 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp, and disconnect all components on the circuit.
2. Test for infinite resistance between the ignition circuit and ground.

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 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Replace the fuse, ignition ON.

4. Verify the fuse is good after connecting each of the components one at a time.
 If the fuse opens, replace the component that opens the fuse when connected.

 If the fuse is good, all OK.

 If the test lamp illuminates

3. Ignition OFF, connect the test lamp to the affected fuel injector connector.
4. Engine cranking.
5. Verify the test lamp turns ON and OFF.
 If the test lamp is always OFF

1. Ignition OFF, remove the test lamp, disconnect the X2 harness connector at the K20 Engine
Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If the test lamp is always ON

1. Ignition OFF, remove the test lamp, disconnect the X2 harness connector at the K20 Engine
Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the test lamp turns ON and OFF

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

6. Test or replace the appropriate Q17 Fuel Injector.

Component Testing

Fuel Injector Diagnosis

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Fuel Injector Replacement

 Control Module References for Engine Control Module replacement, programming, and setup

DTC P0231, P0232, OR P023F

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Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0231

Fuel Pump Control Circuit Low Voltage

DTC P0232

Fuel Pump Control Circuit High Voltage

DTC P023F

Fuel Pump Control Circuit

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance
Control P0231 P023F P0232 P023F, P2635
Low Reference - P023F - P023F, P2635

Circuit/System Description

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that
the ignition is on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds,
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

unless the engine is in crank or run. While this voltage is being received, the fuel pump control module supplies
a varying voltage to the fuel tank pump module in order to maintain the desired fuel line pressure.

Conditions for Running the DTC

P0231, P023F

The ignition voltage is between 9-18 V.

P0232

The control enable voltage signal supplied for the ECM to fuel pump control module is inactive for 4 seconds
after engine has been shut off.

Conditions for Setting the DTC

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The fuel pump control module detects a fault on the fuel pump voltage circuit that is less than 11 V or greater
than 18 V.

Action Taken When the DTC Sets

DTCs P0231, P0232, and P023F are Type A DTCs.

Conditions for Clearing the DTC

DTCs P0231, P0232, and P023F are Type A DTCs.

Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the
information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and
Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

On vehicles equipped with a high pressure mechanical pump on Direct Fuel Injection engines, the vehicle may
continue to run even though the pump in the fuel tank is not operating.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

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Control Module References for scan tool information

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the A7 Fuel Pump and
Level Sensor Assembly. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.
 If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K27 fuel pump control module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 fuel pump control module.

 If less than 10 ohms

3. Connect a test lamp between the control circuit terminal 1 and the low reference circuit terminal 2.
4. Ignition ON.
5. Verify the test lamp turns ON and OFF when commanding the fuel pump ON and OFF using the scan
tool ECM fuel pump enable control function.
 If the test lamp is always OFF

1. Ignition OFF, disconnect the harness connector at the K27 fuel pump control module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 fuel pump control module.

 If the test lamp is always ON

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K27 fuel pump control module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K27 fuel pump control module.

 If the test lamp turns ON and OFF

6. Replace the A7 Fuel Pump and Level Sensor Assembly.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Fuel Tank Fuel Pump Module Replacement

 Control Module References for fuel pump control module replacement, programming and setup

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DTC P0234 OR P0299

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0234

Engine Overboost

DTC P0299

Engine Underboost

Circuit Description

The boost pressure sensor is integrated with the turbocharger boost/intake air temperature sensor. The boost
pressure sensor measures the range of pressures between the turbocharger and the throttle body. The sensor
used on this engine is a three atmosphere sensor. Pressure in this portion of the induction system is affected by
engine speed, throttle opening, turbocharger boost pressure, Intake air temperature (IAT), barometric pressure
(BARO), and the efficiency of the charge air cooler.

The sensor provides a signal voltage to the engine control module (ECM), relative to the pressure changes.
Under normal operation the greatest pressure that can exist in this portion of the induction system at ignition
ON, engine OFF is equal to the BARO. When the engine is operated at wide-open throttle (WOT) the
turbocharger can increase the pressure to near 240 kPa (34.8 psi). The pressure is equal to the BARO when the
engine is idling or decelerating.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Running the DTC

 DTCs P0010, P0011, P0013, P0014, P0033, P0034, P0035, P0068, P0101, P0102, P0103, P0106, P0107,
P0108, P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0128,
P0222, P0223, P0234, P0236, P0237, P0238, P0243, P0245, P0246, P0299, P16F3, P2101, P2227,
P2228, P2229 or P2230 are not set.
 Engine speed between 2, 450-6, 000 RPM.
 Desired boost pressure between 135-220 kPa (19.58-31.90 PSI).
 Ambient pressure between 60-120 kPa (8.70-17.40 PSI).
 Coolant temperature between -40 to +120°C (-40 to +248°F)
 Intake air temperature between -40 to +80°C (-40 to +176°F)

Conditions for Setting the DTC

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P0234

The ECM detects that the actual boost pressure is greater than the desired boost pressure for greater than 2 s.

P0299

The ECM detects that the actual boost pressure is less than the desired boost pressure for greater than 2.5 s.

Action Taken When the DTC Sets

DTCs P0234 and P0299 are Type B DTCs.

The ECM will disable boost control and limit the system to mechanical boost only, resulting in a substantial
decrease in engine power.

Conditions for Clearing the DTC

DTCs P0234 and P0299 are Type B DTCs.

Diagnostic Aids

 The charged air cooler is connected to the turbocharger and to the throttle body by flexible duct work that
requires the use of special high torque fastening clamps. These clamps cannot be substituted. In order to
prevent any type of air leak when servicing the duct work, the tightening specifications and proper
positioning of the clamps is critical, and must be strictly adhered to.
 An excessively worn wastegate pivot pin may allow the wastegate to open slightly when commanded
closed, which may result in P0299 being set.

Reference Information

Schematic Reference
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs

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 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

GE-23738-A Vacuum Pump

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0033, P0034, P0035, P0236, P0237, P0238, P0243, P0245, or P0246 is not set.
 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If none of the DTCs are set

3. Verify the scan tool BARO Sensor parameter is within the range specified in the Altitude Versus
Barometric Pressure table for the current testing altitude.
 If the parameter is not within the range specified in the table.

Refer to DTC P2227-P2230 .

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the parameter is within the range specified in the table.

4. Verify the scan tool MAP Sensor and BARO Sensor parameters are within 3 kPa (0.4 psi).
 If the parameters are not within 3 kPa (0.4 psi).

Refer to DTC P0106.

 If the parameters are within 3 kPa (0.4 psi).

5. Verify the scan tool Boost Pressure Sensor and BARO Sensor parameters are within 3 kPa (0.4 psi).
 If the parameters are not within 3 kPa (0.4 psi).

Refer to DTC P0236.

 If the parameters are within 3 kPa (0.4 psi).

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6. Verify a click is heard or felt from the Q40 turbocharger bypass valve solenoid when commanding the
Turbocharger Bypass Solenoid Valve between Active and Inactive with a scan tool.
 If a click is not heard or felt

Refer to Circuit/System Testing below.

 If a click is heard or felt

7. Verify a series of clicks, which increase in frequency, are heard or felt from the Q42 turbocharger
wastegate solenoid valve when commanding the Turbocharger Wastegate Solenoid Valve between 15-
100 % with a scan tool.
 If a series of clicks in increasing frequency are not heard or felt

Refer to Circuit/System Testing below.

 If a series of clicks in increasing frequency is heard or felt

8. Verify the scan tool MAP Sensor parameter and the Boost Pressure Sensor parameter are within 20 kPa
(2.9 psi) during a WOT acceleration at the time of the 1-2 shift.
 If the parameters are not within 20 kPa (2.9 psi)

Refer to Circuit/System Testing below.

 If the parameter are within 20 kPa (2.9 psi)

9. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
10. Verify a DTC does not set.
 If a DTC sets

Refer to Circuit/System Testing below

 If a DTC does not set

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

11. All OK

Circuit/System Testing

1. Verify the conditions listed below do not exist:

 Loose clamps, cracks or other damage in the air intake duct system

 Collapsed or restricted intake duct system

 Restricted air filter

 Any air flow restriction

 Any air leak between the turbocharger and the throttle body, including the charge air cooler
assembly
 Splits, kinks or improper connections at the vacuum hoses

 Any vacuum leak

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 Restricted, leaking or incorrect routing of hoses going to the components listed below:

 Turbocharger wastegate solenoid valve

 Turbocharger bypass solenoid valve

 Intake manifold and turbocharger vacuum reservoir on the bottom of intake manifold

 Turbocharger

 Turbocharger wastegate actuator

 Turbocharger bypass valve

 Missing, restricted or leaking exhaust components. Refer to Restricted Exhaust

 Exhaust leak between the turbocharger and the exhaust manifold

 Restricted turbocharger oil supply line

 Loose or incorrect installation of any components

 If a condition exists

Repair or replace the affected component as necessary.

 If none of the conditions exist

NOTE: The hose is located between the air cleaner outlet hose and the
turbocharger compressor.

2. Ignition OFF, disconnect the turbocharger wastegate solenoid valve hose at the turbocharger and apply 51
kPa (15 inches Hg) of vacuum to the hose with the GE 23738-A . Ignition ON.
3. Verify the pressure decreases to 0 kPa (0 inches Hg) when commanding the Turbocharger Wastegate
Solenoid Valve to 15 % with a scan tool.
 If the pressure does not decrease to 0 kPa (0 inches Hg)

Replace the Q42 turbocharger wastegate solenoid valve

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the pressure decreases to 0 kPa (0 inches Hg)

4. Connect the turbocharger wastegate solenoid valve hose to the turbocharger.
5. Disconnect the wastegate solenoid valve hose from the turbocharger wastegate actuator and connect the
exhaust/pressure port of the GE 23738-A , or a suitable hand pressure pump, to the actuator.
6. Verify the wastegate actuator rod moves when applying pressure to the actuator.
 If the actuator does not move

1. Disconnect the wastegate actuator arm from the wastegate.

2. Verify the wastegate actuator rod moves when applying pressure to the actuator.
 If the actuator does not move, replace the turbocharger wastegate actuator

 If the actuator moves, replace the turbocharger

 If the actuator moves

7. Disconnect the Q40 Turbocharger Bypass Solenoid Valve vacuum supply hose at the intake manifold.

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8. Connect the GE 23738-A to the manifold.

NOTE: Allow engine idle to stabilize before continuing.

9. Engine Idling, verify the vacuum gauge displays between 45-67 kPa (13-20 inches Hg) of vacuum.
 If not within the specified range

Repair the vacuum source.

 If within the specified range

NOTE: The vacuum reservoir (tank) is integral to intake manifold and is located at
the bottom of the manifold.

10. Ignition OFF, disconnect the vacuum hose at the turbocharger vacuum reservoir.
11. Connect the GE 23738-A to the vacuum reservoir and apply 34 kPa (10 inches Hg) of vacuum.
12. Verify the reservoir holds vacuum for at least 10 s.
 If the vacuum is not held for at least 10 s

Replace the intake manifold

If the vacuum is held for at least 10 s



13. Connect the vacuum hose to the reservoir.

NOTE: Disconnect the Q40 Turbocharger Bypass Solenoid Valve vacuum supply
hose at the intake manifold if not still disconnected from step 7.

14. Disconnect the vacuum hose at the turbocharger bypass valve and connect the GE 23738-A to the hose.
15. Engine idling, command the Turbocharger Bypass Solenoid Valve ON and OFF with a scan tool.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

16. Verify the vacuum toggles between 0 kPa (0 inches Hg) to greater than 45 kPa (13 inches Hg).
 If not within the specified range

Replace the Q40 turbocharger bypass solenoid valve

If within the specified range

17. Connect any hoses that were disconnected during previous steps.
18. Verify the conditions listed below do not exist with the turbocharger assembly. Refer to Turbocharger
Cleaning and Inspection
 Worn or damaged wastegate pivot pin

 Cracked, damaged or worn turbine blades

 Restricted wastegate, turbine, ports or passages

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 Foreign material

 Damaged or restricted bypass valve assembly.

 If a condition exists

Repair or replace the turbocharger as necessary

If none of the conditions exist



19. Replace the turbocharger.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Charge Air Bypass Regulator Solenoid Valve Replacement

 Intake Manifold Replacement
 Turbocharger Replacement
 Turbocharger Wastegate Regulator Solenoid Valve Replacement
 Control Module References for ECM replacement, programming and setup

DTC P0236

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0236
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Turbocharger Boost Sensor Performance

Circuit Description

The boost pressure sensor is integrated with the turbocharger boost/intake air temperature sensor. The boost
pressure sensor measures the range of pressures between the turbocharger and the throttle body. The sensor
used on this engine is a three atmosphere sensor. Pressure in this portion of the induction system is affected by
engine speed, throttle opening, turbocharger boost pressure, Intake air temperature (IAT), barometric pressure
(BARO), and the efficiency of the charge air cooler.

The sensor provides a signal voltage to the engine control module (ECM), relative to the pressure changes.
Under normal operation the greatest pressure that can exist in this portion of the induction system at ignition
ON, engine OFF is equal to the BARO. When the engine is operated at wide-open throttle (WOT) the
turbocharger can increase the pressure to near 240 kPa (34.8 psi). The pressure is equal to the BARO when the
engine is idling or decelerating.

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Conditions for Running the DTC

 DTC P0096, P0097, P0098, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0116, P0117, P0118,
P0119, P0128, P0237, P0238, P0335, P0336, P2227, P2228, P2229, or P2230 is not active.
 Engine speed is between 400-7, 000 RPM.
 Engine Coolant Temperature (ECT) is between -7 to +125°C (19.4-257°F).
 Intake Air Temperature (IAT) is between -20 to +125°C (-4 to +257°F).
 The DTC runs continuously when the above conditions have been met.

OR

 DTC P0106, P0107, P0108, P0237, P0238, P2227, P2228, P2229, P2230, or P2610 s not active.
 DTC P0107, P0108, P0237, P0238, P2228, or P2229 is not pending.
 Ignition is ON.
 Engine is OFF
 The time between current ignition cycle and the last time the engine was running is greater than 6 s.
 The DTC runs continuously when the above conditions have been met.

Conditions for Setting the DTC

 The ECM detects that various combinations of Turbocharger Intake Flow Rationality Diagnostic Failure
models, derived from engine speed, the BARO sensor, the MAF sensor, the MAP sensor, the throttle
position sensor and the turbocharger boost pressure sensor have failed when the engine is running.

OR

 The ECM detects that the boost pressure sensor signal is less than 50 kPa (7.3 psi) or greater than 115 kPa
(16.7 psi) when the ignition is ON and the engine is NOT rotating.

Action Taken When the DTC Sets

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTC P0236 is a Type B DTC.

 The ECM will disable boost control and limit the system to mechanical boost only, resulting in a
substantial decrease in engine power.

Conditions for Clearing the MIL/DTC

DTC P0236 is a Type B DTC.

Diagnostic Aids

 The charge air cooler is connected to the turbocharger and to the throttle body by flexible duct work that
requires the use of special high torque fastening clamps. These clamps cannot be substituted. In order to
prevent any type of air leak when servicing the duct work, the tightening specifications and proper
positioning of the clamps is critical, and must be strictly adhered to.

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 Use a smoke generating device or a solution of dish soap and water in a spray bottle to pinpoint any
suspected air leaks in the induction system and in the charge air cooler assembly.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Verification

1. Verify that DTC P0641 is not set.

 If the DTC is set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) .

 If the DTC is not set

2. If you were sent here from DTC P0068, P0101, P0106, P0121, or P1101, refer to Circuit/System Testing
below.
3. Ignition ON.
4. Verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90%.
 90% or greater

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Refer to Throttle Body Inspection and Cleaning .

If less than 90%

5. Verify the scan tool Throttle Position Sensors 1 and 2 Agree/Disagree parameter displays Agree while
performing the Throttle Sweep Test with a scan tool.
 If Disagree

Refer to DTC P0121-P0123, P0222, P0223, or P2135 (LUV).

If Agree
6. Verify the scan tool BARO parameter is within the range specified in the Altitude Versus Barometric
Pressure table, for the current vehicle testing altitude.
 BARO is not in range

Refer to DTC P2227-P2230 .

BARO is within range

7. Verify the scan tool MAP Sensor pressure and BARO parameters are within 3 kPa (0.4 psi).
 The parameters are not within 3 kPa (0.4 psi).

Refer to DTC P0106.

The parameters are within 3 kPa (0.4 psi).

8. Engine idling.
9. Verify the scan tool MAP Sensor pressure parameter is between 26-52 kPa (3.8-7.5 psi) and changes with
accelerator pedal input.
 If not between 26-52 kPa (3.8-7.5 psi) or does not change

Refer to DTC P0106.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If between 26-52 kPa (3.8-7.5 psi) and changes

10. Verify the scan tool MAF Sensor g/s parameter changes smoothly and gradually as the engine speed is
increased and decreased while performing the actions listed below.
1. Engine idling
2. Perform the scan tool snapshot function.
3. Increase the engine speed slowly to 3, 000 RPM and then back to idle.
4. Exit from the scan tool snapshot and review the data.
5. Observe the MAF Sensor parameter frame by frame with a scan tool.
 The MAF Sensor parameter does not change smoothly and gradually

Refer to DTC P0101.

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The MAF Sensor parameter changes smoothly and gradually
11. Verify the scan tool Boost Pressure Sensor pressure and BARO parameters are within 3 kPa (0.4 psi).
 The parameters are not within 3 kPa (0.4 psi).

Refer to Circuit/System Testing below

The parameters are within 3 kPa (0.4 psi).

12. Verify the scan tool MAP Sensor parameter and the Boost Pressure Sensor parameter are within 20 kPa
(2.9 psi) during a WOT acceleration at the time of the 1-2 shift.
 The parameters are not within 20 kPa (2.9 psi)

Refer to Circuit/System Testing below.

The parameters are within 20 kPa (2.9 psi)

13. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
14. Verify a DTC does not set.
 If a DTC sets

Refer to Circuit/System Testing below.

If a DTC does not set



15. All OK.

Circuit/System Testing

1. Verify that DTC P0237 or P0238 is not set.

 If a DTC is set

Refer to DTC P0237 or P0238.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If none of the DTCs are set

2. Verify the conditions listed below do not exist:
 Loose clamps, cracks, or other damage in the air intake duct system

 Collapsed or restricted air intake duct system

 Restricted air filter

 Splits, kinks or improper connections at the vacuum hoses

 Missing, restricted or leaking exhaust components - Refer to Symptoms - Engine Exhaust .

 Vacuum leaks at the intake manifold and throttle body

 If a condition exists

Repair as necessary.

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If none of the conditions exist


3. Replace the B111B turbocharger boost/intake air temperature sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Intake Air Pressure and Temperature Sensor Replacement for turbocharger boost/intake air
temperature sensor replacement.
 Control Module References for engine control module replacement, programming, and setup

DTC P0237 OR P0238

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0237

Turbocharger Boost Sensor Circuit Low Voltage

DTC P0238

Turbocharger Boost Sensor Circuit High Voltage

Diagnostic Fault Information

Short to Open/High Short to

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit Ground Resistance Voltage Signal Performance

P0236, P0237,
P0236, P0238,
P0340, P0365, P0236, P0237,
5 V Reference P0453, P0641, P0236
P0452, P0532, P2227
P2227
P0641, P2227
P0236, P0237, P0236, P0237, P0236, P0238,
Intake Air Pressure Signal P0236
P2227 P2227 P2227
P0098, P0236,
Low Reference - - -
P0238, P2227

Typical Scan Tool Data

Boost Pressure Sensor

Circuit Short to Ground Open Short to Voltage

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Parameter Normal Range: BARO to 240 kPa (34.8 psi)
Operating Conditions: Engine running
5 V Reference 0 kPa (0 psi) 0 kPa (0 psi) 269 kPa (39 psi)
Boost Pressure Signal 0 kPa (0 psi) 0 kPa (0 psi) 269 kPa (39 psi)
Low Reference - 267 kPa (38.7 psi) -

Circuit Description

The boost pressure sensor is integrated with the turbocharger boost/intake air temperature sensor. The boost
pressure sensor measures the range of pressures between the turbocharger and the throttle body. The sensor
used on this engine is a three atmosphere sensor. Pressure in this portion of the induction system is affected by
engine speed, throttle opening, turbocharger boost pressure, intake air temperature (IAT), barometric pressure
(BARO), and the efficiency of the charge air cooler.

The sensor provides a signal voltage to the engine control module (ECM), relative to the pressure changes.
Under normal operation the greatest pressure that can exist in this portion of the induction system at ignition
ON, engine OFF is equal to the BARO. When the engine is operated at wide-open throttle (WOT) the
turbocharger can increase the pressure to near 240 kPa (34.8 psi). The pressure is equal to the BARO when the
engine is idling or decelerating.

Conditions for Running the DTC

 Ignition is ON or the engine is running.

 The DTCs run continuously when the above conditions have been met.

Conditions for Setting the DTC

P0237

The ECM detects that the boost pressure sensor voltage is less than 1.0 V for greater than 5 s.

P0238
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The ECM detects that the boost pressure sensor voltage is greater than 4.7 V for greater than 5 s.

Action Taken When the DTC Sets

 DTCs P0237 and P0238 are Type B DTCs.

 The ECM will disable boost control and limit the system to mechanical boost only, resulting in a
substantial decrease in engine power.

Conditions for Clearing the MIL/DTC

DTCs P0237 and P0238 are Type B DTCs.

Reference Information

Schematic Reference

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Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Verify that DTC P0641 is not set.

 If the DTC is set
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) .

If the DTC is not set

2. Verify the scan tool BARO parameter is within the range specified in the Altitude Versus Barometric
Pressure table, for the current vehicle testing altitude.
 BARO is not in range.

Refer to DTC P2227-P2230 .

BARO is within range.

3. Verify the scan tool Boost Pressure Sensor pressure and BARO parameters are within 3 kPa (0.4 psi).
 The parameters are not within 3 kPa (0.4 psi).

Refer to Circuit/System Testing below.

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The parameters are within 3 kPa (0.4 psi).
4. Verify the scan tool MAP Sensor parameter and the Boost Pressure Sensor parameter are within 20 kPa
(2.9 psi) during a WOT acceleration at the time of the 1-2 shift.
 The parameters are not within 20 kPa (2.9 psi).

Refer to Circuit/System Testing below.

The parameters are within 20 kPa (2.9 psi).

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify a DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



7. All OK.

Circuit/System Testing

1. Ignition OFF, and all vehicle systems OFF, disconnect the harness connector at the B111B turbocharger
boost/intake air temperature sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between the low reference circuit terminal 1 and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the X1 harness connector at the K20 engine control module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 engine control module.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If less than 5 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the X1 harness connector at the K20 engine control module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 engine control module.

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NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

 If greater than 5.2 V

1. Ignition OFF, disconnect the X1 harness connector at the K20 engine control module, ignition ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 engine control module.

 If between 4.8-5.2 V

5. Verify the scan tool Boost Pressure Sensor voltage parameter is less than 0.2 V.
 If 0.2 V or greater

1. Ignition OFF, disconnect the X1 harness connector at the K20 engine control module, ignition ON.
2. Test for less than 1 V between the signal circuit terminal 4 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 engine control module.

 If less than 0.2 V

6. Install a 3 A fused jumper wire between the signal circuit terminal 4 and the 5 V reference circuit terminal
3.
7. Verify the scan tool Boost Pressure Sensor voltage parameter is greater than 4.5 V.
 If 4.5 V or less

1. Ignition OFF, remove the jumper wire, disconnect the X1 harness connector at the K20 engine
control module.
2. Test for infinite resistance between the signal circuit terminal 4 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If 2 ohms or greater, repair the open or high resistance in the circuit.



 If less than 2 ohms, replace the K20 engine control module.

 If greater than 4.5 V

8. Test or replace the B111B turbocharger boost/intake air temperature sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Intake Air Pressure and Temperature Sensor Replacement for turbocharger boost/intake air
temperature sensor replacement
 Control Module References for ECM replacement, programming, and setup

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DTC P0243, P0245, OR P0246

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0243

Turbocharger Wastegate Solenoid Valve Control Circuit

DTC P0245

Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage

DTC P0246

Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0030, P0033,
P0030, P0034, P0034, P0036,
P0036, P0134, P0134, P0135,
Ignition Voltage Circuit - -
P0135, P0245, P0140, P0141,
P0443, P0598* P0243, P0245,
P0443, P0597
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P0010, P0013,
Control Circuit P0245 P0243 P0246, P0443, P0243
P0690
* Ignition fuse opens.

Circuit/System Description

The BorgWarner™ dual scroll turbocharger incorporates a wastegate that is controlled by a pressure
differential, that is determined by the engine control module (ECM) by means of a pulse width modulation
(PWM) solenoid, in order to regulate the pressure ratio of the compressor. A charge air bypass valve also
controlled by the ECM by utilizing a remotely mounted solenoid is integrated into the bypass valve to prevent
compressor surging and damage from vibrations by opening during abrupt closed throttle conditions. When the
bypass valve is open during closed throttle deceleration conditions, the bypass valve allows the air to recirculate
in the turbocharger and maintain compressor speed. Within a calibrated range during the closed throttle event,

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or upon a wide open throttle command the bypass valve will then close to optimize turbo response. The
turbocharger wastegate actuator has the following circuits:

 Ignition voltage
 Turbocharger wastegate solenoid control

At idle the turbocharger wastegate solenoid parameter is commanded to 0% by the ECM. When the engine load
and RPM first increases under a wide open throttle, the turbocharger wastegate solenoid parameter should
briefly be commanded as great as 90-100%. When the proper level of boost pressure is attained, the ECM will
decrease the PWM of the solenoid to a range of 65-85%. As soon as the throttle closes the ECM will command
the turbocharger wastegate solenoid parameter back to 0%, in order to allow the turbocharger waste gate to
open from the air pressure ratio differential, there by reducing the speed of the turbine.

Conditions for Running the DTC

 Ignition ON or engine running.

 The battery voltage is between 11-32 V.
 This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

The ECM detects an open, a short to ground, or a short to voltage on the turbocharger wastegate solenoid
control circuit for greater than 0.5 s.

Action Taken When the DTC Sets

DTCs P0243, P0245 and P0246 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0243, P0245 and P0246 are Type B DTCs.

Reference Information
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

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 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON
2. Verify a series of clicks, which increase in frequency, are heard or felt from the Q42 Turbocharger
Wastegate Solenoid Valve when commanding the Turbocharger Wastegate Solenoid Valve between 15-
100 % with a scan tool.
 If a series of clicks in increasing frequency are not heard or felt

Refer to Circuit/System Testing below.

If a series of clicks in increasing frequency is heard or felt

3. Verify the parameters listed below do not display Malfunction when commanding the Turbocharger
Wastegate Solenoid Valve between 15-100 % with a scan tool.
 Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status

 Turbocharger Wastegate Solenoid Valve Control Circuit Open Test Status

 Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage Test Status

 If Malfunction is displayed
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

If Malfunction is not displayed

4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
5. Verify a DTC does not set.
 If a DTC sets

Refer to Circuit/System Testing below

If a DTC does not set



6. All OK

Circuit/System Testing

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1. Ignition OFF, disconnect the harness connector at the Q42 Turbocharger Wastegate Solenoid Valve.
Ignition ON.
2. Verify a test lamp illuminates between the ignition circuit terminal 2 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp.

NOTE: An internal short in any component supplied by the fuse may cause
the fuse to open and set a DTC when the component is activated.

2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, test all components connected to the ignition voltage circuit for a short
and replace as necessary.
 If the test lamp illuminates

3. Remove the test lamp.

4. Verify the scan tool Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage Test Status
parameter is OK.
 If OK is not displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If infinite resistance, replace the K20 Engine Control Module.

 If OK is displayed

5. Verify the scan tool Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status
parameter is OK.
 If OK is not displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If OK is displayed

6. Install a 3 A fused jumper wire between the control circuit terminal 1 and the ignition circuit terminal 2.
7. Verify the scan tool Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status

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parameter is Malfunction.
 If Malfunction is not displayed

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module.
2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If Malfunction is displayed

8. Test or replace the Q42 Turbocharger Wastegate Solenoid Valve.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Turbocharger Wastegate Regulator Solenoid Valve Replacement

 Control Module References for ECM replacement, programming and setup

DTC P025A

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P025A

Fuel Pump Control Module Enable Circuit

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance
Control P025A P025A - P025A

Circuit/System Description

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that
the ignition is on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds,
unless the engine is in crank or run. While this voltage is being received, the fuel pump control module supplies
a varying voltage to the fuel tank pump module in order to maintain the desired fuel line pressure.

Conditions for Running the DTC

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The ignition is ON.

Conditions for Setting the DTC

The serial data message from the ECM to the fuel pump control module does not agree with the state of the
control enable voltage signal supplied from the ECM to the fuel pump control module for more than 2 seconds.

Action Taken When the DTC Sets

DTC P025A is a Type A DTC.

Conditions for Clearing the DTC

DTC P025A is a Type A DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

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NOTE: Verify that the fuel tank is not empty. Only perform this diagnostic if there is at
least 2 gallons of fuel in the fuel tank. Clear the DTC, and start and run the
engine. Verify that the DTC resets before proceeding with the circuit system
testing. If the DTC does not reset, refer to diagnostic aids.

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K27 fuel pump control
module, ignition ON.
2. Connect a test lamp between the control circuit terminal 20 and ground.
3. Verify the test lamp turns ON and OFF when commanding the fuel pump ON and OFF using the scan
tool ECM fuel pump enable control function.
 If the test lamp is always OFF

1. Ignition OFF, disconnect the harness connector at the K20 engine control module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 engine control module.

 If the test lamp is always ON

1. Ignition OFF, disconnect the harness connector at the K20 engine control module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 engine control module.

 If the test lamp turns ON and OFF

4. Test or replace the K27 fuel pump control module.

Repair Instructions
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for ECM or fuel pump control module replacement, programming and setup

DTC P0300-P0304

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

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DTC P0300

Engine Misfire Detected

DTC P0301

Cylinder 1 Misfire Detected

DTC P0302

Cylinder 2 Misfire Detected

DTC P0303

Cylinder 3 Misfire Detected

DTC P0304

Cylinder 4 Misfire Detected

Circuit/System Description

The engine control module (ECM) uses information from the crankshaft position sensor and the camshaft
position sensors in order to determine when an engine misfire is occurring. By monitoring variations in the
crankshaft rotation speed for each cylinder, the ECM is able to detect individual misfire events. A misfire rate
that is high enough can cause 3-way catalytic converter damage. The malfunction indicator lamp (MIL) will
flash ON and OFF when the conditions for catalytic converter damage are present. DTCs P0301 through P0304
correspond to cylinders 1 through 4. If the ECM is able to determine that a specific cylinder is misfiring, the
DTC for that cylinder will set, and the corresponding fuel injector is disabled and/or add fuel. The ECM will re-
enable the fuel injector after 3 crankshaft revolutions (6 for manual transmission vehicles) to determine if a
misfire is still present and either disable for 3 crankshaft revolutions (6 for manual transmission vehicles) again
or stay enabled, depending on whether the misfire is still present.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Running the DTC

 DTC 0010, P0011, P0013, P0014, P0016, P0017, P0018, P0019, P0020, P0021, P0023, P0024, P0068,
P00C8, P00C9, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0117,
P0118, P0119, P0122, P0123, P0191, P0192, P0193, P0222, P0223, P0335, P0336, P0340, P0341,
P0345, P0346, P0365, P0366, P0390, P0391, P0601, P0604, P0606, P0651, P16A0, P16A1, P16A2,
P16F3, P2101, P2135, P2227, P2228, P2229, or P2230 is not set.
 The engine speed is between 600-6 528 RPM.
 The ignition voltage is between 11-18 V.
 The engine coolant temperature (ECT) sensor is between -7 to +125°C (+19 to +257°F).
 The A/C compressor clutch is not changing states.
 The fuel tank level is greater than 15%.
 The ECM is not in fuel cut-off or deceleration fuel cut-off mode.

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 The ECM is not receiving a rough road signal.
 The throttle angle is steady within 5%.
 The throttle angle is greater than 3% when the vehicle speed is greater than 5 km/h (3 MPH).
 The transmission is not changing gears.
 The antilock brake system (ABS) and the traction control system, if equipped, is not active.
 DTCs P0300, P0301, P0302, P0303, and P0304 run continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM is detecting a crankshaft rotation speed variation indicating a misfire sufficient to cause emission or
catalyst damaging levels to exceed mandated standards.

Action Taken When the DTC Sets

 DTCs P0300-P0304 are Type B DTCs.

 The ECM may disable up to two fuel injector's of the misfiring cylinder's when a catalyst damaging level
of misfire is present. And will flash the malfunction indicator lamp (MIL).

Conditions for Clearing the DTC

DTCs P0300-P0304 are Type B DTCs.

Diagnostic Aids

 A misfire may only occur when the engine is under a load or when the engine is cold.
 A misfire DTC may be caused by an excessive vibration from sources other than the engine. Inspect for
the following possible sources:
 A tire or wheel that is out of round or out of balance

 Variable thickness brake rotors

 Certain rough road conditions

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 A damaged accessory drive component or belt

 A damaged reluctor wheel

 High resistance in the circuits of the injectors may set a misfire DTC without setting an injector DTC.
Test the injector circuits of the affected cylinder(s) for a high resistance if you suspect a condition.
 The MIL indicator flashes when there is an engine misfire.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

cardiagn.com
COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

 EL 26792 HEI Spark Tester

 EN 36012-A Ignition System Diagnostic Harness

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

NOTE: Before starting vehicle, review freeze frame data to determine if misfire sets
during cold start or warmed up operation. If the vehicle has a cold start problem
and the vehicle is started, the vehicle will require to be not started for many
hours before next attempt to operate the vehicle within the fail conditions.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Engine idling at the normal operating temperature, verify there is no abnormal engine noise.
2. Verify there is no abnormal engine noise.
 If abnormal engine noises are present

Refer to Symptoms - Engine Mechanical .

If there are no abnormal engine noises

3. Verify no DTCs other than P0300-P0304 are set.
 If any DTCs other than P0300-P0304 are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

 If only DTCs P0300-P0304 are set

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Refer to Circuit/System Testing below.

If no DTCs are set

4. Verify the scan tool Cylinder 1-4 Current Misfire Counter Misfire parameters do not increment.
 If Misfire Current Counters are incrementing

Refer to Circuit/System Testing below

If Misfire Current Counters are not incrementing

5. Engine idling.
6. Verify the engine speed changes when performing the Cylinder Power Balance Test with a scan tool.
 If engine speed does not change

Refer to Circuit/System Testing below.

If engine speed does change

7. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
8. Verify the DTCs are not set.
 If any of the DTCs set

Refer to Circuit/System Testing below.

If none of the DTCs set



9. All OK.

Circuit/System Testing

1. Perform the Crankshaft Position System Variation Learn procedure. Verify the scan tool displays
Learned Successful.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the scan tool did not display Learned Successful

Inspect for the following conditions and repair as necessary:

Worn crankshaft main bearings

 A damaged or misaligned reluctor wheel

 Excessive crankshaft runout

 Interference in the signal circuit of the crankshaft position sensor

 The ignition switch is in the ON position until there is insufficient system voltage.

 An ECM power disconnect with the ignition ON that may have erased the crankshaft position
system variation values and set DTC P0315
 Debris between the crankshaft position sensor and the reluctor wheel

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 If the engine control module is still unable to complete the learn procedure, replace the K20 Engine
Control Module..
 If the scan tool displays Learned Successful

2. Verify that the following conditions do not exist:

 Vacuum hose splits, kinks, and incorrect connections

 Engine vacuum leaks

 Crankcase ventilation system for vacuum leaks

 Fuel pressure that is too low or too high-Refer to Fuel System Diagnosis .

 Contaminated fuel-Refer to Alcohol/Contaminants-in-Fuel Diagnosis .

 Exhaust system restrictions

 If a condition exist

Repair or replace as necessary.

If no conditions exist

3. Ignition OFF, remove the K35 Ignition Coil Module and connect the (EL 26792) HEI Spark Tester to the
coil of the misfiring cylinder.
4. Verify none of the conditions listed below exist with the boot of the K35 Ignition Coil Module:
 Holes

 Tears

 Carbon tracking

 Oil contamination

 Water intrusion

 If a condition exist

Repair or replace as necessary.

 If no conditions exist
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

NOTE: An erratic or weak spark is considered a no spark condition.

5. Verify the (EL 26792) HEI Spark Tester sparks while cranking or starting the engine.
 If there is no spark

Refer to Electronic Ignition System Diagnosis for diagnosis of the ignition coil.

 If there is spark
6. Ignition OFF, remove the spark plug from the misfiring cylinder.
7. Exchange the suspected spark plug with another cylinder that is operating correctly.
8. Engine idling.
9. Verify the scan tool Cylinder 1-4 Current Misfire Counter parameter does not increment on the spark plug
coil it was removed from.

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 If the misfire does follow the spark plug exchange

Replace the spark plug.

If the misfire does not follow the spark plug exchange
10. Test or inspect for the following:
 A lean or rich Q17 Fuel Injector-Refer to Fuel System Diagnosis .

 An engine mechanical condition-Refer to Symptoms - Engine Mechanical .

Repair Instructions

 Ignition Coil Replacement

 Spark Plug Replacement

Repair Verification

1. If the customer concern was a flashing MIL, operate the vehicle within the conditions for running DTC
P0420. Refer to DTC P0420 .
2. Clear the DTCs with a scan tool.
3. Turn OFF the ignition for 60 s.
4. Start the engine.
5. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records.
6. If the DTC fails this ignition, a misfire still exists.

DTC P0315

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Review Strategy Based Diagnosis for an overview of the diagnostic approach.

 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0315

Crankshaft Position System Variation Not Learned

Circuit/System Description

The crankshaft position sensor system variation learn feature is used to calculate reference period errors caused
by slight tolerance variations in the crankshaft, and the crankshaft position sensor. The calculated error allows
the engine control module (ECM) to accurately compensate for reference period variations. This enhances the

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ability of the ECM to detect misfire events over a wider range of engine speed and load.

The crankshaft position sensor system variation compensating values are stored in ECM memory after a learn
procedure has been performed. If the actual crankshaft position sensor variation is not within the crankshaft
position sensor system variation compensating values stored in the ECM, DTC P0300 may set.

If the crankshaft position sensor system variation values are not stored in the ECM memory, DTC P0315 sets.

Conditions for Running the DTC

 The engine is running.

 The DTC runs continuously.

Conditions for Setting the DTC

The crankshaft position sensor system variation values are not stored in the ECM memory.

Action Taken When the DTC Sets

DTC P0315 is a Type A code.

Conditions for Clearing the DTC

DTC P0315 is a Type A code.

Diagnostic Aids

This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to
Battery Inspection/Test .

Reference Information

Schematic Reference
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

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Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

NOTE: The crankshaft position sensor system variation learn procedure may have to
be repeated up to 5 times before the procedure is learned.

1. Perform the crankshaft position variation learn procedure. Refer to Crankshaft Position System
Variation Learn .
2. If the crankshaft position variation learn procedure cannot be performed successfully, inspect for the
following conditions:
 Any worn crankshaft main bearings

 A damaged or misaligned reluctor wheel

 Excessive crankshaft runout

 Interference in the signal circuit of the B26 Crankshaft Position Sensor

 The ignition switch is left in the ON position, until the battery is discharged

 An ECM power disconnect, with the ignition ON, that may have erased the crankshaft position
sensor system variation values and set DTC P0315.
 Any debris between the crankshaft position sensor and the reluctor wheel

 If the ECM is still unable to complete the learn procedure, replace the K20 Engine Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Control Module References

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 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DIAGNOSTIC INFORMATION AND PROCEDURES

DTC P0324, P0326, OR P06B6

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

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DTC Descriptor

DTC P0324

Knock Sensor Module Performance

DTC P0326

Knock Sensor Performance

DTC P06B6

Control Module Knock Sensor Processor Performance

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
Signal P0327 P0325 P0328 P0326
Low Reference P0327 - P0325, P0328 -

Circuit/System Description

The knock sensor enables the engine control module (ECM) to control the ignition timing for the best possible
performance while protecting the engine from potentially damaging levels of detonation. The knock sensor
produces an alternating current (AC) voltage signal that varies depending on the vibration level during engine
operation. The ECM adjusts the spark timing based on the amplitude and the frequency of the knock sensor
signal. The ECM receives the knock sensor signal through a signal circuit. The ECM supplies a ground circuit
to the knock sensor through a low reference circuit. The ECM also supplies a shielded ground circuit to the
knock sensor. The ECM learns a knock sensor noise level at idle and uses calibrated values for the rest of the
engine speed range. The ECM should monitor a normal knock sensor signal within the noise channel.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Running the DTC

P0324, and P0326 Excessive Knock Detection Mode

 Engine speed is between 580-8 500 RPM.

 The ECT is greater than -40°C (-40°F).
 The IAT is greater than -40°C (-40°F).
 The DTCs run continuously when the above conditions are met.

P0324 and P0326 Abnormal Noise Detection Mode, Improperly Bolted Knock Sensor

 Engine speed is between 2 500-8 500 RPM.

 The ECT is greater than -40°C (-40°F).

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 The IAT is greater than -40°C (-40°F).
 The DTCs run continuously when the above conditions are met.

P06B6

 Engine speed is greater than 580 RPM.

 The ECT is greater than -40°C (-40°F).
 The IAT is greater than -40°C (-40°F).
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

P0324

The knock sensor signal indicates an excessive engine knock is present for greater than 10 s for at least 1 single
cylinder.

P0326

 The signal indicates the sensor harness is connected, but the sensor is not properly bolted to the engine.
 The above condition exist for greater than 10 s.

or

 The knock sensor signal indicates an excessive engine knock is present.

 The above condition exist for greater than 10 s.

P06B6

The ECM has detected an internal knock sensor processor fault.

Action Taken When the DTC Sets

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTCs P0324, P0326 and P06B6 are Type B DTCs.

 The ignition timing is retarded to reduce the potential of engine damaging spark knock.

Conditions for Clearing the DTC

DTCs P0324, P0326 and P06B6 are Type B DTCs.

Diagnostic Aids

 Inspect the knock sensor for physical damage and proper installation. A knock sensor that is dropped or
damaged may cause a DTC to set.
 Inspect the knock sensor for proper installation. A knock sensor that is loose or over torqued may cause a
DTC to set. The knock sensor should be free of thread sealant.
 The knock sensor mounting surface should be free of burrs, casting flash, and foreign material.

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Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Knock Sensor System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition ON.
2. Engine running, observe the DTC information with a scan tool.
3. Verify DTC P0325, P0327, P0328 and P06B6 is not set.
 IF DTC P0325, P0327, or P0328 is set with P06B6

Refer to DTC P0325, P0327, or P0328 for further diagnosis.

 If only DTC P06B6 is set

Verify that no external knock sensor circuit issues exist, then; replace the K20 engine control
module.

If none of the DTCs is set



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4. Vehicle OFF, inspect for the following:
 The affected B68 knock sensor for physical damage. A sensor that is dropped or damaged may
cause a DTC to set
 The sensor for proper installation. A sensor that is loose or not at the correct torque may cause a
DTC to set. Refer to Fastener Tightening Specifications .
 The sensor mounting surface for burrs, casting flash, and foreign material

 The sensor must be clear of hoses, brackets, and engine electrical wiring

 Loose brackets

 Loose or broken accessory drive belts, brackets, components

 An engine mechanical condition-Refer to Symptoms - Engine Mechanical

 If a condition is found

Repair or replace component as appropriate.

If no condition is found

5. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure Records data.
 If any of the DTCs set

Test or replace the B68 knock sensor.

If none of the DTCs set



6. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Knock Sensor Replacement

 Control Module References for ECM replacement, programming and setup
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0325, P0327, OR P0328

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0325

Knock Sensor Circuit

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DTC P0327

Knock Sensor Circuit Low Voltage

DTC P0328

Knock Sensor Circuit High Voltage

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
Signal P0327 P0325 P0328 P0326
Low Reference P0327 - P0325, P0328 -

Circuit/System Description

The knock sensor system enables the engine control module (ECM) to control the ignition timing for the best
possible performance while protecting the engine from potentially damaging levels of detonation. The knock
sensor produces an alternating current (AC) voltage signal that varies depending on the vibration level during
engine operation. The ECM adjusts the spark timing based on the amplitude and the frequency of the knock
sensor signal. The ECM receives the knock sensor signal through a signal circuit and a low reference circuit.
The ECM learns a minimum knock sensor noise level at idle and uses calibrated values for the rest of the RPM
range. The ECM should monitor a normal knock sensor signal within the noise channel.

Conditions for Running the DTC

P0325

 Engine speed is between 580-8 500 RPM.

 The ECT is greater than -40°C (-40°F).
 The IAT is greater than -40°C (-40°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 This DTC runs continuously within the enabling conditions.

 The DTCs run continuously when the above conditions are met.

P0327 or P0328

 Engine speed is between 0-8 500 RPM.

 DTCs P0327 and P0328 run continuously once the above condition is met.

Conditions for Setting the DTC

P0325

The ECM detects the knock sensor signal circuit is open for greater than 5 s.

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P0327

The ECM detects the knock sensor signal circuit is shorted to ground for greater than 5 s.

P0328

The ECM detects the knock sensor signal circuit is shorted to voltage for greater than 5 s.

Action Taken When the DTC Sets

 DTCs P0325, P0327, and P0328 are Type B DTCs.

 The ignition timing is retarded to reduce the potential of engine damaging spark knock.

Conditions for Clearing the DTC

DTCs P0325, P0327, and P0328 are Type B DTCs.

Diagnostic Aids

 Inspect the knock sensor for physical damage and proper installation. A knock sensor that is dropped or
damaged may cause a DTC to set.
 Inspect the knock sensor for proper installation. A knock sensor that is loose or over torqued may cause a
DTC to set. The knock sensor should be free of thread sealant.
 The knock sensor mounting surface should be free of burrs, casting flash, and foreign material.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Knock Sensor System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

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Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Engine running
2. Verify DTC P0325, P0327, P0328 or P06B6 is not set.
 If DTC P0325, P0327 or P0328 is set with P06B6

Refer to Circuit/System Testing below.

 If only DTC P06B6 is set

Replace the K20 Engine Control Module.

 If none of the DTCs are set

3. Verify the affected B68 Knock Sensor is properly tightened. Refer to Fastener Tightening
Specifications .
4. Verify the scan tool parameters below display NO while moving the related harnesses and connectors for
the affected B68 Knock Sensor.
 Cylinder 1 Knock Detected

 Cylinder 2 Knock Detected

 Cylinder 3 Knock Detected

 Cylinder 4 Knock Detected

 If NO is not displayed
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

If NO is displayed
5. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure Records data.
 If any of the DTCs set

Refer to Circuit/System Testing below.

If none of the DTCs set



6. All OK

Circuit/System Testing

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1. Ignition OFF, disconnect the harness connector at the B68 Knock Sensor, ignition ON.
2. Test for 1-4 V between each of the following circuits and ground:
 Signal terminal 1

 Low reference terminal 2

 If less than 1 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the affected circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the affected circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 4 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module, ignition
ON.
2. Test for less than 1 V between the affected circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 1-4 V

3. Replace the B68 Knock Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Knock Sensor Replacement

 Control Module References for ECM replacement, setup, and programming
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0335 OR P0336

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0335

Crankshaft Position Sensor Circuit

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DTC P0336

Crankshaft Position Sensor Performance

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P057C, P0335,
5 V Reference P0335 P0651 P0336
P0651
Signal P0335, P0506 P0335 P0335 P0336
Low Reference - P0335 - P0336

Circuit/System Description

The crankshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V reference
circuit, low reference circuit, and an output signal circuit. The crankshaft position sensor is an internally
magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes of the
teeth and slots of a 58-tooth reluctor wheel on the crankshaft. Each tooth on the reluctor wheel is spaced at 60-
tooth spacing, with 2 missing teeth for the reference gap. The crankshaft position sensor produces an ON/OFF
DC voltage of varying frequency, with 58 output pulses per crankshaft revolution. The frequency of the
crankshaft position sensor output depends on the velocity of the crankshaft. The crankshaft position sensor
sends a digital signal, which represents an image of the crankshaft reluctor wheel, to the ECM as each tooth on
the wheel rotates past the crankshaft position sensor. The ECM uses each crankshaft position signal pulse to
determine crankshaft speed and decodes the crankshaft reluctor wheel reference gap to identify crankshaft
position. This information is then used to determine the optimum ignition and injection points of the engine.
The ECM also uses crankshaft position sensor output information to determine the camshaft relative position to
the crankshaft, to control camshaft phasing, and to detect cylinder misfire.

Conditions for Running the DTC

P0335 Condition 1
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The starter is engaged and the engine control module detects camshaft position (CMP) sensor pulses.

OR

 DTCs P0101, P0102 and P0103 are not set.

AND

 The airflow into the engine is greater than 2 g/s.

Condition 2

 The engine is running and the starter is not engaged.

 DTC P0651 is not set.

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Condition 3

 The engine is running or the starter is engaged.

 DTCs P0365, P0366, P0641, or P0651 are not set.

P0336 Condition 1

 The airflow into the engine is greater than 2 g/s.

 Engine speed is greater than 450 RPM.
 DTCs P0335 or P0651 are not set.

Condition 2

 The engine is running and the starter is not engaged.

 DTC P0651 is not set.

Condition 3

 The starter is engaged and the engine control module detects camshaft position (CMP) sensor pulses.

OR

 DTCs P0101, P0102, and P0103 are not set.

 The airflow into the engine is greater than 2 g/s.

Condition 4

 The engine is running or the starter is engaged.

 DTCs P0365, P0366, P0641, or P0651 are not set.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

P0335 Condition 1

The ECM does not detect a crankshaft position sensor pulse for greater than 4 s.

Condition 2

The ECM does not detect a crankshaft position sensor pulse for greater than 0.1 s.

Condition 3

The ECM does not detect a crankshaft position sensor pulse for 2 out of 10 engine revolutions.

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P0336 Condition 1

The ECM detects that 10 or more crankshaft resynchronization have occurred within 10 s.

Condition 2

The ECM does not detect the synchronization gap on the reluctor wheel for greater than 0.4 s.

Condition 3

The ECM does not detect the synchronization gap on the reluctor wheel for greater than 1.5 s after the starter
was engaged.

Condition 4

The ECM detects less than 51 or greater than 65 crankshaft position sensor pulses during 1 engine revolution
for 8 out of 10 engine revolutions.

Action Taken When the DTC Sets

 DTCs P0335 and P0336 are Type B DTCs.

 The camshaft position sensor is used to determine engine position.
 The camshaft actuators are commanded to the parked position.

Conditions for Clearing the DTC

DTCs P0335 and P0336 are Type B DTCs.

Reference Information

Schematic Reference
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Electronic Ignition System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs

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 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0651 is not set.
 If the DTC is set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM).

If the DTC is not set

3. Engine Running.
4. Verify the scan tool Crankshaft Position Active Counter parameter increments.
 If the counter does not increment

Refer to Circuit/System Testing below.

 If the counter increments

5. Verify the scan tool Crankshaft Position Resync Counter parameter displays 0 counts and the engine does
not stumble or stall while moving the related harness/connectors of the B26 Crankshaft Position Sensor.
 If greater than 0 counts and the engine stumbles or stalls
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

If 0 counts and the engine does not stumble or stall

6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
7. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK.

Circuit/System Testing

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1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B26 Crankshaft
Position Sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between the low reference circuit terminal 2 and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If 2 ohms or less, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module, ignition
ON.
2. Test for less than 1 V between the 5 V reference and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

5. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance.

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module, ignition
ON.

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2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Ignition OFF, connect a 3 A fused jumper wire to the signal circuit terminal 3, ignition ON.

NOTE: Additional DTCs may set when performing this test.

7. Verify the scan tool Crankshaft Position Sensor Active Counter parameter increments while rapidly
tapping the fused jumper wire end to ground.
 If the counter does not increment

Replace the K20 Engine Control Module.

If the counter increments

8. Verify DTC P0336 is not set.
 If the DTC is set

Inspect for the conditions listed below:

 Excessive play or looseness of the B26 Crankshaft Position Sensor or the reluctor wheel
 Improper installation of the B26 Crankshaft Position Sensor
 Foreign material passing between the B26 Crankshaft Position Sensor and the reluctor wheel
 Damaged reluctor wheel
 Excessive air gap between the B26 Crankshaft Position Sensor and the reluctor wheel
 Engine oil for debris
 Timing chain, tensioner, and sprockets for wear or damage
 If any of the conditions above are found, repair as necessary.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If all components test normal, test or replace the B26 Crankshaft Position Sensor.
 If the DTC is not set

9. Test or replace the B26 Crankshaft Position Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Crankshaft Position Sensor Replacement

 Control Module References for engine control module replacement, programming, and setup

DTC P0340, P0341, P0365, OR P0366

Diagnostic Instructions

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 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0340

Intake Camshaft Position Sensor Circuit

DTC P0341

Intake Camshaft Position Sensor Performance

DTC P0365

Exhaust Camshaft Position Sensor Circuit

DTC P0366

Exhaust Camshaft Position Sensor Performance

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0107, P0452,
5 V Reference P0340, P0365 P0641 -
P0532, P0641
Signal P0340, P0365 P0340, P0365 P0340, P0365 P0341, P0366
Low Reference - P0340, P0365 P0340, P0365 -
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Description

The camshaft position sensors each have 3 circuits consisting of an engine control module (ECM) supplied 5 V
reference circuit, low reference circuit, and an output signal circuit. The camshaft position sensor is an
internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux
changes of the teeth and slots of a 4-tooth reluctor wheel attached to the camshaft. As each reluctor wheel tooth
rotates past the camshaft position sensor, the resulting change in the magnetic field is used by the sensor
electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying
frequency with 4 varying width output pulses per camshaft revolution that represent an image of the camshaft
reluctor wheel. The frequency of the camshaft position sensor output depends on the velocity of the camshaft.
The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then
used to determine the optimum ignition and injection points of the engine. The ECM uses the exhaust camshaft
position sensor to determine injector and ignition system synchronization. The intake and exhaust camshaft
position sensors are also used to determine camshaft to crankshaft relationship. The ECM also uses camshaft
position sensor output information to determine the camshaft relative position to the crankshaft to control

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camshaft phasing and limp-home operation.

Conditions for Running the DTC

P0340 or P0365 Condition 1

 The starter is engaged and the engine control module detects camshaft position sensor pulses.

OR

 DTCs P0101, P0102, and P0103 are not set.

 The airflow into the engine is greater than 2 g/s.

Condition 2

 The engine is running and the starter is not engaged.

 DTC P0651 is not set.

Condition 3

 The crankshaft is synchronized.

 The starter is engaged.
 DTC P0335, P0336, P0641, or P0651 are not set.

Condition 4

 The crankshaft is synchronized.

 DTC P0335, P0336, P0641, or P0651 are not set.

P0341 or P0366 Condition 1

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 The crankshaft is synchronized.

 The starter is engaged.
 DTC P0335, P0336, P0641, or P0651 are not set.

Condition 2

 The crankshaft is synchronized.

 DTC P0335, P0336, P0641, or P0651 are not set.

The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

P0340 or P0365 Condition 1

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The ECM does not detect a camshaft position sensor pulse for greater than 5.5 s or greater than 4.0 s since the
time the starter has been engaged.

Condition 2

The ECM detects less than 4 camshaft position sensor pulses for greater than 3.0 s.

Condition 3

The ECM does not detect a camshaft position sensor pulse during the first 2 engine revolutions.

Condition 4

The ECM does not detect a camshaft position sensor pulse during 200 engine revolutions.

P0341 or P0366 Condition 1

The ECM detects less than 4 or greater than 6 camshaft position sensor pulses during the first 2 engine
revolutions.

Condition 2

The ECM detects less than 398 or greater than 402 camshaft position sensor pulses during 200 engine
revolutions.

Action Taken When the DTC Sets

 DTCs P0340, P0341, P0365, and P0366 are Type B DTCs.

 The camshaft position actuator is commanded to the Home or Parked position.
 The ignition system defaults to a failed camshaft position sensor limp home mode.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Clearing the MIL/DTC

DTCs P0340, P0341, P0365, and P0366 are Type B DTCs.

Diagnostic Aids

 With a DTC set, the engine may crank for an extended period of time at start-up
 The exhaust camshaft position sensor is used for injector and ignition system synchronization. A stalling
condition will occur if the camshaft positionsensor signal is intermittent and a DTC may not set. Inspect
the intake and exhaust camshaft position sensor circuits for poor connections.

Reference Information

Schematic Reference

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Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Electronic Ignition System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0641 or P0651 is not set.
 If any of the DTCs are set
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Refer to DTC P0641, P0651, P0697, or P06A3 (ECM).

If none of the DTCs are set

3. Engine Running.
4. Verify the scan tool parameters listed below increment:
 Exhaust Camshaft Position Active Counter

 Intake Camshaft Position Active Counter

 If any counter does not increment

Refer to Circuit/System Testing below.

If all counters increment

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within

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the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



7. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate B23
Camshaft Position Sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between the low reference circuit terminal 2 and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If 2 ohms or less, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance.

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module, ignition
ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.

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2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance.

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module, ignition
ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Verify DTC P0341 or P0366 is not set.

 If any of the DTCs are set

Inspect for the conditions listed below:

 Excessive play or looseness of the B23 Camshaft Position Sensor or the reluctor wheel
 Improper installation of the B23 Camshaft Position Sensor
 Foreign material passing between the B23 Camshaft Position Sensor and the reluctor wheel
 Damaged reluctor wheel
 Excessive air gap between the B23 Camshaft Position Sensor and the reluctor wheel
 Engine oil for debris
 Timing chain, tensioner, and sprockets for wear or damage
 If any of the conditions above are found, repair as necessary.
 If all components test normal, test or replace the B23 Camshaft Position Sensor.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If none of the DTCs are set

7. Test or replace the B23 Camshaft Position Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Camshaft Position Sensor Replacement

 Control Module References for engine control module replacement, programming, and setup

DTC P0351-P0354

Diagnostic Instructions

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 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0351

Ignition Coil 1 Control Circuit

DTC P0352

Ignition Coil 2 Control Circuit

DTC P0353

Ignition Coil 3 Control Circuit

DTC P0354

Ignition Coil 4 Control Circuit

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
Ignition Coil 1 Control P0300, P0351 P0300, P0351 P0300, P0351 P0300, P0351
Ignition Coil 2 Control P0300, P0352 P0300, P0352 P0300, P0352 P0300, P0352
Ignition Coil 3 Control P0300, P0353 P0300, P0353 P0300, P0353 P0300, P0353
Ignition Coil 4 Control P0300, P0354 P0300, P0354 P0300, P0354 P0300, P0354

Circuit/System Description
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The ignition system on this engine uses an ignition coil module. The engine control module (ECM) controls the
spark event for each cylinder through the individual ignition coil control circuits. When the ECM commands the
ignition control circuit ON, electrical current will flow through the primary winding of the ignition coil, creating
a magnetic field. When a spark event is requested, the ECM will command the ignition control circuit OFF,
interrupting current flow through the primary winding. The magnetic field created by the primary winding will
collapse across the secondary coil windings, producing a high voltage across the spark plug electrodes. The
ECM uses information from the crankshaft position sensor, and the camshaft position sensor for sequencing and
timing of the spark events. The ECM monitors each ignition control circuit for improper voltage levels.

Conditions for Running the DTC

 The engine is running.

 Ignition voltage is greater than 5 V.

The DTCs run continuously when the above conditions are met.

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Conditions for Setting the DTC

The engine control module detects that the voltage command state of the driver and the actual state of the
control circuit do not match.

Action Taken When the DTC Sets

DTCs P0351, P0352, P0353, and P0354 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0351, P0352, P0353, and P0354 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Electronic Ignition System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Testing for Intermittent Conditions and Poor Connections

 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Engine Running.

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2. Verify the scan tool parameters listed below do not display Malfunction:
 Ignition Coil 1-4 Control Circuit High Voltage Test Status

 Ignition Coil 1-4 Control Circuit Low Voltage Test Status

 Ignition Coil 1-4 Control Circuit Open Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not displayed

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



5. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K35 Ignition Coil
Module.
2. Remove the fuel injector fuse.
3. Connect a DMM between the appropriate K35 Ignition Coil Module control circuit listed below and
ground. Set the DMM to the DC Hz scale and utilize the Min-Max function:
 Ignition Coil 1 terminal D

 Ignition Coil 2 terminal E

 Ignition Coil 3 terminal F

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Ignition Coil 4 terminal G

4. Verify the DMM displays greater than 1.5 Hz while cranking the engine.
 If less than 1.5 Hz

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms

4. Ignition ON.

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5. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If greater than 1.5 Hz

5. Replace the K35 Ignition Coil Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Ignition Coil Replacement

 Control Module References for engine control module replacement, programming, and setup

DTC P0420

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0420

Catalyst System Low Efficiency

Circuit/System Description

A 3-way catalytic converter controls emissions of hydrocarbons, CO and NOx. The catalyst within the
converter promotes a chemical reaction, which oxidizes the hydrocarbons and the CO that are present in the
exhaust gas. This process converts the hydrocarbons and the CO into water vapor and CO2, and reduces the
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NOx, by converting the NOx into nitrogen. The catalytic converter also stores oxygen. The ECM monitors this
process by using a Heated Oxygen Sensor (HO2S) that is in the exhaust stream after the 3-way catalytic
converter. The HO2S 2 produces an output signal that the ECM uses to calculate the oxygen storage capacity of
the catalyst. This indicates the ability of the catalyst to convert the exhaust emissions efficiently. The ECM
monitors the efficiency of the catalyst by allowing the catalyst to heat, then wait for a stabilization period while
the engine is idling. The ECM then adds and removes fuel while monitoring the HO2S 2. When the catalyst is
functioning properly, the HO2S 2 response to the extra fuel is slow compared to the response of the HO2S 1,
which is located before the 3-way catalytic converter. When the HO2S 2 response is near that of the HO2S 1,
the oxygen storage capability and efficiency of the catalyst may be degraded below an acceptable threshold.

Conditions for Running the DTC

 DTC P0016, P0017, P0030, P0036, P0053, P0054, P0068, P0101, P0102, P0103, P0106, P0107, P0108,
P0111, P0112, P0113, P0114, P0116, P0117, P0118, P0119, P0121, P0122, P0123, P0128, P0131,
P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P015A,

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P015B, P16F3, P0171, P0172, P0222, P0223, P0300, P0301, P0302, P0303, P0304, P0335, P0336,
P0340, P0341, P0365, P0366, P0443, P0502, P0503, P0506, P0507, P0606, P0697, P06A3, P2101,
P2122, P2123, P2127, P2128, P2135, P2138, P2270 or P2271 is not set.
 Before the ECM performs the idle test, the vehicle must be driven under the following conditions:
 The engine speed is greater than 1, 100 RPM for a minimum of 5 s.

 The vehicle speed is less than 2 km/h (1.24 mph).

 The engine runtime is greater than 120 s.

 The run/crank voltage is greater than 11 V.

 The intake air temperature (IAT) is between -20 to +250°C (-4 to +482°F).
 The engine coolant temperature (ECT) is between 40-140°C (104-284°F).
 The engine has been idling less than 50 s.
 The short term fuel trim is between -20 to +30.
 The barometric pressure (BARO) is greater than 70 kPa.
 The intake mass air flow (MAF) is between 1.50-7.00 g/s.
 The engine is operating in closed loop.
 The calculated catalyst temperature is between 550-950°C (1, 022-1, 742°F).
 The automatic transmission is in drive range.
 This diagnostic attempts one test during each valid idle period once the above conditions have been met.
This diagnostic attempts up to 8 tests during each drive cycle.

Conditions for Setting the DTC

The ECM determines that the efficiency of the catalyst has degraded below a calibrated threshold.

Action Taken When the DTC Sets

DTC P0420 is a Type A DTC.

Conditions for Clearing the DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0420 is a Type A DTC.

Diagnostic Aids

Inspect for the conditions listed below, which may cause a catalytic converter to degrade:

 An engine misfire
 High engine oil or high coolant consumption
 Retarded spark timing
 A weak or poor spark
 A lean fuel mixture
 A rich fuel mixture
 A damaged oxygen sensor or wiring harness

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Reference Information

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify there are no other DTCs set.
 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If a DTC is not set

3. Operate the vehicle within the Conditions for Running the DTC.
4. Verify the scan tool Catalyst Monitor Not At Idle Test Conditions Met parameter changes to Yes.
 The parameter does not change to Yes
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Operate the vehicle within the Conditions for Running the DTC.

 The parameter changes to Yes

5. When the conditions are safe, stop and idle the vehicle in gear.
6. Apply the service brake.
7. Monitor the scan tool Catalyst Monitor Test State parameter. When the parameter indicates Active, the
Catalyst Monitor Test is running.
8. Continue to monitor the parameter. When the parameter indicates Inactive, the Catalyst Monitor Test has
completed.
9. When the test has completed, the Catalyst Monitor Test Counter parameter will increment by one and the
Catalyst Monitor Test Result parameter will indicate Passed, Failed or No Result.
 The parameter indicates No Result

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Repeat steps 3-8 until the Test Result parameter indicates Passed or Failed

 The parameter indicates Failed

Refer to Circuit /System Testing below.

The parameter indicates Passed



10. All OK.

Circuit/System Testing

1. Verify the conditions listed below do not exist with the catalytic converters:
 Dents

 Severe discoloration caused by excessive temperatures

 Road damage

 Internal rattles caused by damaged catalyst substrate

 Restrictions

 If a condition is found

Replace the catalytic converter

If no condition is found

2. Verify the conditions listed below do not exist with the exhaust system:
 Leaks

 Physical damage

 Loose or missing hardware

 If a condition is found

Repair or replace the affected component as necessary.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If no condition is found

3. Verify the conditions listed below do not exist with the B52B Heated Oxygen Sensor 2:
 Incorrect torque

 Damage

 If a condition is found

Replace the B52B Heated Oxygen Sensor 2 or repair the condition as necessary.

If no condition is found

4. Test or replace the catalytic converter and the warm up three-way catalytic converter.

Repair Instructions

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NOTE: A new converter with less than 160 km (100 mi) on it may set DTC P0420 due to
outgassing of the internal matting. Operating the vehicle at highway speeds for
approximately 1 h may correct the condition.

 Catalytic Converter Replacement (1.4L LUV)

 Warm Up Three-Way Catalytic Converter Replacement
 Heated Oxygen Sensor Replacement - Sensor 2

Repair Verification

1. Install any components that have been removed or replaced during diagnosis.
2. Perform any adjustments, programming or setup procedures that are required when a component is
removed or replaced.
3. Clear the DTCs with a scan tool.
4. Turn OFF the ignition for 60 s
5. Operate the vehicle within the Conditions for Running the DTC.
6. Verify the scan tool Catalyst Monitor Not At Idle Test Conditions Met parameter changes to Yes.
 The parameter does not change to Yes

Operate the vehicle within the Conditions for Running the DTC.

 The parameter changes to Yes

7. When the conditions are safe, stop and idle the vehicle in gear.
8. Apply the service brake.
9. Monitor the scan tool Catalyst Monitor Test State parameter. When the parameter indicates Active, the
Catalyst Monitor Test is running.
10. Continue to monitor the parameter. When the parameter indicates Inactive, the Catalyst Monitor Test has
completed.
11. When the test has completed, the Catalyst Monitor Test Counter parameter will increment by one and the
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Catalyst Monitor Test Result parameter will indicate Passed, Failed or No Result.
 The parameter indicates No Result

Repeat steps 5-10 until the Test Result parameters indicate Passed or Failed

 The parameter indicates Failed

Refer to Circuit /System Testing below.

The parameters indicates Pass



12. All OK.

DTC P0442

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Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0442

Evaporative Emission (EVAP) System Small Leak Detected

Circuit/System Description

The engine off natural vacuum (EONV) test is the small leak detection diagnostic for the evaporative emission
(EVAP) system. This diagnostic tests the EVAP system for a small leak when the key is turned OFF and the
correct conditions are met. Heat from the exhaust system is transferred into the fuel tank while the vehicle is
operating. When the vehicle is turned OFF and the EVAP system is sealed a change in the fuel tank vapor
temperature occurs which results in a corresponding pressure change in the fuel tank vapor space. This change
is monitored by the ECM using the fuel tank pressure (FTP) sensor input. With a leak in the system, the amount
of pressure change will be less than that of a sealed system.

Conditions for Running the DTC

 DTCs P010C, P010D, P0101, P0102, P0103, P0106, P0107, P0108, P0111, P0112, P0113, P0114, P0116,
P0117, P0118, P0125, P0128, P0443, P0446, P0449, P0452, P0453, P0455, P0496, P0461, P0462,
P0463, P0464, P0496, P0502, P0503, P0722, P0723, P2227, P2228, P2229, P2230, P2610. are not set.
 The barometric pressure (BARO) is greater than 70 kPa.
 The engine coolant sensor (ECT) is greater than 63°C (145°F)
 No fuel filling during the EONV test period.
 The fuel level is between 10-90%.
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 The start-up engine coolant temperature (ECT) and the start-up intake air temperature (IAT) are within 8°
C (46°F).
 The engine run time before shut-off was greater than 10 min.
 The drive distance before engine shut-off was more than 5 km (3 mi).
 The ambient air temperature at the end of the drive cycle is between 0-34°C (32-93°F).
 DTC P0442 runs once per drive cycle during the hot soak period after the ignition is turned OFF and may
require up to 40 min to complete. The controller will not make more than 2 test attempts per day. The
time since the last completed EONV test must be at least 17 h if passed or 10 h if failed.

Conditions for Setting the DTC

 The ECM detects a leak in the EVAP system that is greater than a calibrated amount.
 The ECM must complete several EONV tests before the diagnostic can turn the MIL on or off.

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Action Taken When the DTC Sets

DTC P0442 is a Type A DTC.

Conditions for Clearing the DTC

DTC P0442 is a Type A DTC.

Diagnostic Aids

 The EVAP system can be filled with smoke more quickly and completely by opening the system opposite
the end where the smoke is injected. When injecting smoke at the service port tool temporarily leave the
EVAP vent solenoid valve open until smoke is observed then close the system and continue testing.
 To help locate intermittent leaks using the GE 41413-A , move all EVAP components while observing
smoke with the GE 41413-SPT .
 Individual components can be isolated and tested using adapters in the GE 41413-300 .
 When servicing the EVAP system, test pressure must not exceed 13 in H20 (0.5 PSI) as pressure in
excess of this could cause system components to perform inaccurately.
 A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type
of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the EVAP
system and then observe the FTP parameter for vacuum decay.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

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Scan Tool Reference

Control Module References for scan tool information

Special Tools

 CH 48096 EVAP Service Port Access Tool

 GE 41413-A Evaporative Emissions System Tester (EEST)
 GE 41413-300 EVAP Cap and Plug Kit
 GE 41413-SPT High Intensity White Light

For equivalent regional tools, refer to Special Tools .

Circuit/System Testing

NOTE:  Refer to the GE 41413-A operation manual for detailed instructions in

Evaporative Emission Control System Diagnosis
 Larger volume fuel tanks and/or those with lower fuel levels may require
several minutes for the floating indicator to stabilize or produce smoke
from a leak.
 Ensure that the underbody temperature of the vehicle and the tester are
similar.

1. Disconnect the purge tube at the quick connector on the EVAP canister side of the Q12 Evaporative
Emission Canister Purge Solenoid Valve and install the CH 48096 .
2. Connect the GE 41413-A to the CH 48096 .
3. Command the EVAP Purge/Seal function to System Seal with a scan tool to seal the EVAP system.
4. Use the flow meter on the GE 41413-A , calibrated to 0.51 mm (0.020 in) to determine if there is a leak.
 If a leak is detected
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Use the GE 41413-A to apply smoke to the EVAP system at the purge tube until the leak is located
using the GE 41413-SPT
 No leak in the EVAP system

5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

DTC P0443

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

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 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0443

Evaporative Emission (EVAP) Purge Solenoid Valve Control Circuit

Diagnostic Fault Information

Circuit Short to Ground Open / High Resistance Short to Voltage

P0031, P0033,
P0034, P0037,
P0132, P0134,
Ignition - Purge Supply P0135, P0138, P0443 P0690
P0140, P0245,
P0443, P0597,
P0507, P0598
EVAP Purge Solenoid Valve
P0443 P0443 P0443, P0690
Control

Circuit/System Description

An ignition voltage is supplied directly to the evaporative emission (EVAP) purge solenoid valve. The engine
control module (ECM) grounds the EVAP purge solenoid valve control circuit through an internal switch called
a driver. The ECM monitors the status of the driver. The EVAP purge solenoid valve is pulse width modulated
(PWM). A scan tool will display the amount of ON time as a percentage. If the ECM detects an incorrect
voltage for the commanded state of the driver this DTC sets.

Conditions for Running the DTC

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The system voltage is greater than 11 V.

 DTC P0443 runs continuously when the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match
for a minimum of 0.25 s.

Action Taken When the DTC Sets

DTC P0443 is a Type B DTC.

Conditions for Clearing the MIL/DTC

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DTC P0443 is a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition ON.
2. Verify the parameters listed below do not display malfunction when commanding the EVAP purge
solenoid valve from 0 to 50 % and back to 0 % with a scan tool.
 EVAP Purge Solenoid Valve Control Circuit Low Voltage Test Status

 EVAP Purge Solenoid Valve Control Circuit Open Test Status

 EVAP Purge Solenoid Valve Control Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not display



3. All OK.

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Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the Q12 Evaporative Emission Purge Solenoid Valve,
ignition ON.
2. Verify that a test lamp illuminates between the ignition circuit terminal 2 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp.

2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground in the circuit.

 If infinite resistance, test the Q12 Evaporative Emission Purge Solenoid Valve and replace as
necessary.
 If the test lamp illuminates

3. Verify that a test lamp does not illuminate between the ignition circuit terminal 2 and the control circuit
terminal 1.
 If the test lamp illuminates

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

4. Remove the test lamp.

5. Verify the scan tool EVAP Purge Solenoid Valve Control Circuit High Voltage Test Status parameter is
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

OK when commanding the EVAP purge solenoid valve ON with a scan tool.
 If the Parameter is not OK

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If the Parameter is OK

6. Install a 3 A fused jumper wire between the control circuit terminal 1 and the ignition circuit terminal 2.
7. Verify the scan tool EVAP Purge Solenoid Valve Control Circuit High Voltage Test Status parameter is
Malfunction when commanding the EVAP Purge Solenoid Valve ON with a scan tool.
 If the Parameter is not Malfunction.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.

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2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If the parameter is Malfunction

8. Test or replace the Q12 Evaporative Emission Purge Solenoid Valve.

Component Testing

Static Test

1. Ignition OFF, disconnect the harness connector at the Q12 Evaporative Emission Purge Solenoid Valve.
2. Test for 10.0-30.0 ohms between the control circuit terminal 1 and the ignition circuit terminal 2 of the
Q12 Evaporative Emission Purge Solenoid Valve.
 If not between 10.0-30.0 ohms

Replace the Q12 Evaporative Emission Purge Solenoid Valve

If between 10.0-30.0 ohms



3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Evaporative Emission Canister Purge Solenoid Valve Replacement

 Control Module References for ECM replacement, setup, and programming

DTC P0446

Diagnostic Instructions
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0446

Evaporative Emission (EVAP) Vent System Performance

Typical Scan Tool Data

Fuel Tank Pressure Sensor Signal Voltage Fuel Tank Pressure

1.5 V Atmospheric Pressure / BARO

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Less than 1.5 V Positive Pressure
More than 1.5 V Negative Pressure / Vacuum

Circuit/System Description

This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path that would
cause excess amounts of vacuum to be developed in the EVAP system. The engine control module (ECM) uses
the fuel tank pressure (FTP) sensor to monitor EVAP system vacuum. With the purge valve and vent valve
open, if the EVAP system vacuum goes above a calibrated threshold, P0446 will set.

The following table illustrates the relationship between the ON and OFF states, and the OPEN or CLOSED
states of the EVAP purge and vent solenoid valves.

ECM Command EVAP Purge Solenoid Valve EVAP Vent Solenoid Valve
ON Open Closed
OFF Closed Open

Conditions for Running the DTC

 DTCs P00C8, P00C9, P010C, P010D, P0068, P16F3, P0102, P0103, P0111, P0112, P0113, P0114,
P0116, P0117, P0118, P0122, P0123, P0125, P0128, P160E, P160D, P0191, P0192, P0193, P0222,
P0223, P0443, P0449, P0452, P0453, P0454, P0502, P0503, P0606, P0722, P0723, P1104, P2100,
P2101, P2102, P2103, P2135, P2227, P2228, P2229, or P2230 is not set
 The ignition voltage is between 11-32 V.
 The barometric pressure (BARO) is more than 70 kPa.
 The fuel level is between 10-90 %.
 The startup engine coolant temperature (ECT) is less than 35°C (95°F).
 The startup intake air temperature (IAT) is between 4-30°C (39-86°F).
 DTC P0446 runs once per cold start, for up to 17 min, when the above conditions are met.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Setting the DTC

NOTE: There are two stages to setting this DTC. Stage one, prep test, then stage two
test.

 If fuel tank pressure sensor reading is greater than 2.5 in H2O of pressure or less than -5 in H2O of
vacuum for 60 s.

OR

 If fuel tank pressure sensor reading is less than -12 in H2O of vacuum for 5 s before 10 L (2.6 gal) of
purge volume.
 After setting the DTC for the first time, 2 liters (0.5 gallons) of fuel must be consumed before setting the
DTC for the second time.

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Action Taken When the DTC Sets

DTC P0446 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0446 is a Type B DTC.

Diagnostic Aids

 An intermittent condition could be caused by a damaged EVAP vent housing, a temporary blockage at the
EVAP vent solenoid valve inlet, or a pinched vent hose. A blockage in the vent system may also cause a
poor fuel fill condition.
 An EVAP canister filter that is restricted can cause this DTC to set.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

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 CH 41415-30 Fuel Tank Cap Adapter
 GE 41413-A Evaporative Emissions System Tester (EEST)

For equivalent regional tools, refer to Special Tools

Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0443 is not set.
 If the DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle

 If the DTC is not set

3. Ignition OFF, remove the fuel tank filler cap. Ignition ON.
4. Verify the scan tool Fuel Tank Pressure Sensor parameter is between 1.3-1.7 V.
 If not between the 1.3-1.7 V

Refer to P0452, P0453 within DTC P0451-P0454

 If between the 1.3-1.7 V

5. Install the fuel tank filler cap. Engine idling at operating temperature for 5 min.
6. Verify the scan tool Fuel Tank Pressure Sensor parameter does not increase to greater than 2.5 V when
commanding the EVAP Purge Solenoid Valve to 50 %.
 If greater than 2.5 V

Refer to Circuit/System Testing below.

If 2.5 V or less


7. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

the conditions that you observed from the freeze frame/failure records data.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK.

Circuit/System Testing

NOTE: Perform the Circuit/System Verification before proceeding with the

Circuit/System Testing.

1. Test for a blockage or restrictions in the EVAP system components listed below and repair as necessary.

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 Evaporative Emission Vent System Hoses

 Evaporative Emission Canister

 Q13 Evaporative Emission Vent Solenoid Valve

 Evaporative Emission Vent Filter

2. Reconnect all previously disconnected EVAP hardware.

NOTE: Refer to the GE 41413-A operation manual for detailed instructions in

Evaporative Emission Control System Diagnosis .

3. Remove the fuel fill cap and connect the CH 41415-30 to the fuel tank filler neck. Connect the GE 41413-
A to the CH 41415-30.
4. Command the EVAP Purge/Seal function to System Seal with a scan tool to seal the EVAP system.
5. Turn the nitrogen/smoke valve on the GE 41413-A to nitrogen.

NOTE: DO NOT exceed the specified value in this step. Exceeding the specified
value may produce incorrect test results.

6. Use the remote switch to activate the GE 41413-A and pressurize the fuel tank to 5.0 in H2O.
7. Verify the scan tool Fuel Tank Pressure Sensor parameter is 0 in H2O when commanding the EVAP Vent
Solenoid Valve to OFF.
 If not 0 in H20

Test for a blockage or a restriction in the EVAP vent hose or inlet. If the inlet or hose test normal,
replace the Q13 Evaporative Emission Vent Solenoid Valve.

If 0 in H2O
8. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
 If the DTC sets
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to step 1 above.

If the DTC does not set



9. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Evaporative Emission Canister Vent Solenoid Valve Replacement

 Evaporative Emission Canister Replacement
 Fuel Tank Pressure Sensor Replacement

DTC P0449

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Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0449

Evaporative Emission (EVAP) Vent Solenoid Valve Control Circuit

Diagnostic Fault Information

Circuit Short to Ground Open / High Resistance Short to Voltage

Battery - Vent Supply P0449 P0449 -
EVAP Vent Solenoid Valve Control P0449 P0449 P0449

Circuit/System Description

Battery voltage is supplied to the evaporative emissions (EVAP) vent solenoid valve. The engine control
module (ECM) grounds the EVAP vent solenoid valve control circuit through an internal switch called a driver.
The ECM monitors the status of the driver for the control circuit. A scan tool will display the commanded state
of the EVAP vent solenoid valve as OFF - Venting or ON - Not Venting.

Conditions for Running the DTC

DTC P0449 runs continuously when the above conditions are met.

Conditions for Setting the DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match
for a minimum of 0.25 s.

Action Taken When the DTC Sets

DTC P0449 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0449 is a Type B DTC.

Reference Information

Schematic Reference

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Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, engine OFF,

2. Command the EVAP Vent Solenoid Valve ON - Not Venting and OFF - Venting with a scan tool.
3. You should hear the solenoid click when commanded ON and OFF.
 No clicking heard
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

Clicking is heard
4. Engine idling, command the EVAP Vent Solenoid Valve ON - Not Venting and OFF - Venting with a
scan tool while observing the following control circuit status parameters:
 EVAP Vent Solenoid Valve Control Circuit Low Voltage Test Status

 EVAP Vent Solenoid Valve Control Circuit Open Test Status

 EVAP Vent Solenoid Valve Control Circuit High Voltage Test Status

 If the Parameters display Malfunction

Refer to Circuit/System Testing below.

If the Parameters display OK or Not Run

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5. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
6. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



7. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the Q13 Evaporative Emissions Vent Solenoid Valve,
ignition ON.
2. Verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the B+ circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp.

2. Test for infinite resistance between the B+ circuit and ground.
 If less than infinite resistance, repair the short to ground in the circuit.

 If infinite resistance, test the Q13 Evaporative Emissions Vent Solenoid Valve for a short and
replace as necessary.
 If the test lamp illuminates

3. Verify that a test lamp does not illuminate between the B+ circuit terminal 2 and the control circuit
terminal 1.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the test lamp illuminates

1. Ignition OFF, disconnect the harness connector at the Q13 Evaporative Emissions Vent Solenoid
Valve.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

4. Remove the test lamp.

5. Verify the scan tool EVAP Vent Solenoid Valve Control Circuit High Voltage Test Status parameter is
OK when commanding the EVAP Vent Solenoid Valve ON with a scan tool.
 If the Parameter is not OK

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.

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2. Test for less than 1 V between the control circuit terminal 1 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If the Parameter is OK

6. Install a 3 A fused jumper wire between the control circuit terminal 1 and the B+ circuit terminal 2.
7. Verify the scan tool EVAP Vent Solenoid Valve Control Circuit High Voltage Test Status parameter is
Malfunction when commanding the EVAP Vent Solenoid Valve ON with a scan tool.
 If the Parameter is not Malfunction

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If the Parameter is Malfunction

8. Test or replace the Q13 Evaporative Emission Vent Solenoid Valve.

Component Testing

Static Test

1. Ignition OFF, disconnect the harness connector at the Q13 Evaporative Emission Vent Solenoid Valve.
2. Test for 10-30 ohms between the control terminal 1 and the B+ voltage terminal 2.
 If not between 10.0-30.0 ohms

Replace the Q13 Evaporative Emission Vent Solenoid Valve.

If between 10.0-30.0 ohms



3. All OK.

Repair Instructions
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the repair.

 Evaporative Emission Canister Vent Solenoid Valve Replacement

 Control Module References for ECM replacement, setup, and programming.

DTC P0451-P0454

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

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DTC P0451

Fuel Tank Pressure Sensor Performance

DTC P0452

Fuel Tank Pressure Sensor Circuit Low Voltage

DTC P0453

Fuel Tank Pressure Sensor Circuit High Voltage

DTC P0454

Fuel Tank Pressure Sensor Circuit Intermittent

Diagnostic Fault Information

Short to Short to
Circuit Ground High Resistance Open Voltage Signal Performance
P0236,
P0236,
P0238,
P0237,
P0453,
5 V Reference P0452, P0451 P0452 -
P0641,
P0532,
P1101,
P0641
P2227
Signal P0452 P0451 P0452 P0453 P0451, P0454
P0453,
Low Reference - P0446, P0451 - P0451
P0463

Typical Scan Tool Data

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

FTP Sensor Voltage

Circuit Short to Ground Open Short to Voltage
Operating Conditions: Ignition ON, Engine OFF
Parameter Normal Range: 1.3-1.7 V
FTP Sensor 5 V Reference 0V 0V 4.2-5 V
FTP Sensor Signal 0V 0V 5V
FTP Sensor Low Reference - 4.5 V -

Circuit/System Description

The Fuel Tank Pressure (FTP) sensor measures pressure or vacuum in the evaporative emission (EVAP)
system. The engine control module (ECM) supplies a 5 V reference and a low reference circuit to the FTP
sensor. The FTP sensor signal voltage varies depending on EVAP system pressure or vacuum. The controller
also uses this FTP signal to determine atmospheric pressure for use in the engine-off small leak test, DTC

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P0442. Before using this signal as an atmospheric reference it must first be re-zeroed.

Conditions for Running the DTC

P0451

 DTC P0451 runs only when the engine-off natural vacuum small leak test, P0442, executes.
 The number of times this test runs can range from 0-2 per engine-off period. The length of the test can be
up to 10 min.

P0452 and P0453

DTC P0452 and P0453 run continuously when the ignition is ON.

P0454

 DTC P0454 runs only when the engine-off natural vacuum small leak test, P0442, executes and the
EVAP Vent Solenoid Valve is closed.
 This test can run once per engine-off period. The length of the test can be up to 10 min.
 A refueling event is not detected. A refueling event is confirmed if the fuel level has a persistent change
of 10 % for 30 s.

Conditions for Setting the DTC

P0451

This DTC will set if the controller is unable to re-zero the FTP sensor voltage within a calibrated range during
the engine-off small leak test, P0442.

P0452

The FTP sensor voltage is less than 0.15 V for more than 10 s.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P0453

The FTP sensor voltage is more than 4.9 V for more than 10 s.

P0454

If, during the engine-off natural vacuum small leak test, P0442, the ECM detects an abrupt FTP signal change,
other than a refueling event, this DTC will set. An abrupt change is defined as a change of 0.45 in H2O in the
span of 1 s but less than 1 in H2O in 12.5 ms.

Action Taken When the DTC Sets

 DTCs P0451 and P0454 are Type A DTCs.

 DTCs P0452 and P0453 are Type B DTCs.

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Conditions for Clearing the MIL/DTC

 DTCs P0451 and P0454 are Type A DTCs.

 DTCs P0452 and P0453 are Type B DTCs.

Diagnostic Aids

P0451 and P0454

 A restriction in the EVAP canister or vent lines could prevent fuel vapor pressure from bleeding off fast
enough. If the vent system cannot bleed off pressure fast enough, the re-zero procedure may not complete
successfully, which could cause this code to set.
 Ensure that the reference port on the FTP sensor is unobstructed.
 An FTP sensor that is skewed or does not have a linear transition from low to high may cause this code to
set. Scan tool output controls, snapshot, and plot functions can help detect erratic sensor response. To test
the sensor signal under vacuum conditions, use the Quick Snapshot and the Purge/Seal functions to
capture data while commanding purge to 20 %, then plot the data to look for erratic sensor operation. A
similar test can be done for the pressure side of the sensor operation by applying pressure with the GE
41413-A while taking a snapshot.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

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Control Module References for scan tool information

Special Tools

GE 41413-A Evaporative Emission System Tester (EEST)

For equivalent regional tools, refer to Special Tools

Circuit/System Verification

1. Remove the fuel cap.

2. Ignition ON, engine OFF.
3. Verify the scan tool FTP sensor parameter is between 1.3 and 1.7 V.
 If not between 1.3-1.7 V

Refer to Circuit/System Testing below.

If between 1.3-1.7 V


4. All OK.

Circuit/System Testing

1. Ignition OFF, all vehicle systems OFF, this may take up to 2 min, for all vehicle systems to power down.
Disconnect the harness connector at the B150 Fuel Tank Pressure Sensor.
2. Test for less than 5 ohms of resistance between the low reference circuit terminal 2 and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

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 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Verify the scan tool FTP parameter is less than 0.2 V.

 If 0.2 V or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON
2. Test for less than 1 V between the signal circuit terminal 1 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If less than 0.2 V

6. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal
3.
7. Verify the scan tool FTP sensor parameter is greater than 4.7 V.
 If 4.7 V or less

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 1 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 4.7 V

8. Test or replace the B150 Fuel Tank Pressure Sensor.

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Fuel Tank Pressure Sensor Replacement

 Control Module References for ECM replacement, setup, and programming.

DTC P0455

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

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DTC Descriptor

DTC P0455

Evaporative Emission (EVAP) System Large Leak Detected

Circuit/System Description

The engine control module (ECM) tests the evaporative emission (EVAP) system for a large leak or restrictions
to the purge path in the EVAP system. When the enabling criteria has been met, the ECM commands the EVAP
vent solenoid valve and purge solenoid valve ON, allowing vacuum into the EVAP system. The ECM monitors
the fuel tank pressure (FTP) sensor voltage to verify that the system is able to reach a predetermined level of
vacuum within a set amount of time.

Conditions for Running the DTC

 DTCs P00C8, P00C9, P010C, P010D, P16A0, P16A1, P16A2, P160E, P160D, P16F3, P0068, P0101,
P0102, P0103, P0111, P0112, P0113, P0114 P0116, P0117, P0118, P0122, P0123, P0125, P0128, P0191,
P0192, P0193, P0222, P0223, P0443, P0449, P0452, P0453, P0454, P0502, P0503, P0601, P0604,
P0606, P0722, P0723, P1104, P1682, P2100, P2101, P2102, P2103, P2135, P2176, P2227, P2228,
P2229, P2230 are not set.
 The ignition voltage is between 11-32 V.
 The barometric pressure (BARO) is greater than 70 kPa.
 The fuel level is between 10-90%.
 The EVAP purge flow is greater than 4.50%
 The cold startup engine coolant temperature (ECT) and the startup intake air temperature (IAT) are within
8°C (46°F).
 The startup engine coolant temperature (ECT) is less than 35°C (95°F).
 The startup intake air temperature (IAT) is between 4-30°C (39-86°F).
 DTC P0455 runs once per cold start, for up to 17 min, when the above conditions are met.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Setting the DTC

 The EVAP system is not able to achieve or maintain a calibrated level of vacuum within a set amount of
time.
 After setting the DTC for the first time, 2 L (0.5 gal) of fuel must be consumed before setting the DTC for
the second time.
 With a DTC P0455 detected a weak vacuum follow-up test (fuel cap replacement test) will run and passes
if tank vacuum is greater than 2.74 kPa (11 in H20). This test will run for a maximum of 21 min. This test
runs until it passes.

Action Taken When the DTC Sets

DTC P0455 is a Type B DTC.

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Conditions for Clearing the MIL/DTC

DTC P0455 is a Type B DTC.

Diagnostic Aids

 Inspect for a loose, missing, damaged, or incorrect fuel fill cap.

 Inspect for a damaged fuel filler neck seal surface.
 A blockage or restriction in the EVAP purge solenoid valve, purge pipe, EVAP canister, or vapor pipe,
can cause this DTC to set.
 The EVAP system can be filled with smoke more quickly and completely by opening the system opposite
the end where the smoke is injected. For example, when injecting smoke at the service port remove the
fuel fill cap, or temporarily leave the vent open, until smoke is observed, then close the system and
continue testing. If using a fuel cap adapter at the filler neck, use the J 41413-VLV at the service port to
allow the system to fill faster.
 To help locate intermittent leaks using the GE 41413-A , move all EVAP components while observing
smoke with the GE 41413-SPT .
 Individual components can be isolated and tested using adapters in the J 41413-300 .
 When servicing the EVAP system, test pressure must not exceed 13 in H20 (0.5 PSI) as pressure in
excess of this could cause system components to perform inaccurately.
 A condition may exist where a leak in the EVAP system only exists under a vacuum condition. This type
of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the EVAP
system and then observe the FTP Sensor parameter for vacuum decay.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

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Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

 CH 48096 EVAP Service Access Port Tool

 GE 41415-30 Fuel Tank Cap Adapter
 GE 41413-A Evaporative Emissions System Tester (EEST)
 J 41413-300 EVAP Cap and Plug Kit
 GE 41413-SPT High Intensity White Light
 J 41413-311 EVAP Plug (Brass Nozzle)
 J 41413-VLV EVAP Service Port Vent Fitting

For equivalent regional tools, refer to Special Tools

Circuit/System Testing

IMPORTANT:  Larger volume fuel tanks and/or those with lower fuel levels may require
several minutes for the floating indicator to stabilize or produce smoke
from a leak.
 Refer to the GE 41413-A operation manual for detailed instructions in
Evaporative Emission Control System Diagnosis.

1. Disconnect the purge tube at the quick connector on the EVAP canister side of the purge solenoid valve
and install the CH 48096 .
2. Connect the GE 41413-A to the vehicle EVAP service port adapter.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

3. Command the EVAP Purge/Seal function to System Seal with a scan tool to seal the EVAP system.
4. Verify that there is no leak in the EVAP system using the flow meter on the GE 41413-A , calibrated to
0.51 mm (0.020 in)..
 If a leak is detected

1. Apply smoke to the EVAP system at the service access port adapter with the GE 41413-A .
2. Locate the leak using the GE 41413-SPT
 When the leak is located, repair or replace the affected component as necessary.

 If no leak detected

NOTE: The steps below test for a restriction in the purge path.

5. Connect the GE 41413-A nitrogen/smoke hose to the J 41413-311 .

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6. Disconnect the hose at the fuel cap end of the GE 41415-30 and connect to the J 41413-311 .
7. Install the GE 41415-30 , filler neck end only, to the vehicle.
8. Engine idling, command the Purge/Seal function to System Seal with a scan tool to seal the system.
9. Command the EVAP Purge Solenoid Valve to 30% with a scan tool.
10. Verify the vacuum/pressure gauge on the GE 41413-A and the scan tool Fuel Tank Pressure Sensor
parameter both show vacuum.
 If the vacuum/pressure gauge shows vacuum, but the FTP parameter does not show vacuum

Replace the B150 Fuel Tank Pressure Sensor.

 If neither the FTP parameter nor the vacuum/pressure gauge shows vacuum

Repair the restriction in the purge path.

11. Verify that the Fuel Tank Pressure Sensor parameter increases to greater than 3.2 V, and the pressure
values are similar between the scan tool Fuel Tank Pressure Sensor and the vacuum/pressure gauge on the
GE 41413-A .
 If not within the specified range

Replace the B150 Fuel Tank Pressure Sensor.

If within the specified range



12. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Fuel Tank Pressure Sensor Replacement

 Control Module References for ECM replacement, programming and setup
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0496

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0496

Evaporative Emission (EVAP) System Flow During Non-Purge

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Circuit/System Description

This DTC tests for undesired intake manifold vacuum flow to the evaporative emission (EVAP) system. The
engine control module (ECM) seals the EVAP system by commanding the EVAP purge solenoid valve OFF
and the vent solenoid valve ON. The ECM monitors the fuel tank pressure (FTP) sensor to determine if a
vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is more than a predetermined
value within a predetermined time, this DTC sets.

The following table illustrates the relationship between the ON and OFF states, and the Open or Closed states of
the EVAP purge and vent solenoid valves.

ECM Command EVAP Purge Solenoid Valve EVAP Vent Solenoid Valve
ON Open Closed
OFF Closed Open

Conditions for Running the DTC

 DTCs P0068, P00C8, P00C9, P00CA, P0090, P0091, P0092, P0106, P0107, P0108, P0111, P0112,
P0113, P0114, P0116, P0117, P0118, P0122, P0123, P0125, P0128, P0191, P0192, P0193, P0222,
P0223, P0601, P0604, P0606, P0697, P06A3, P06DB, P06DE, P0A1D, P1104, P127A, P127C, P127D,
P15F2, P160D, P160E, P1682, P16A0, P16A1, P16A2, P16F3, P0443, P0449, P0452, P0453, P0454,
P0502, P0503, P0722, P0723, P2100, P2101, P2102, P2103, P2122, P2123, P2127, P2128, P2135,
P2138, P215B, P2176, P228C, P228D, U0073, U0074, U0293, U1817, are not set.
 The ignition voltage is between 11-32 V.
 The engine OFF time is greater than 48 min,
 The barometric pressure (BARO) is greater than 70 kPa.
 The fuel level is between 10-90 %.
 The startup engine coolant temperature (ECT) is less than 35°C (95°F).
 The startup intake air temperature (IAT) is between 4-34°C (39-93°F).
 DTC P0496 runs once per cold start, for up to 17 min, when the above conditions are met.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Setting the DTC

 The ECM detects more than 10 in H2O vacuum for 5 s during a non-purge condition.
 This test will run with the purge valve closed and the vent valve closed.

Action Taken When the DTC Sets

DTC P0496 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0496 is a Type B DTC.

Diagnostic Aids

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An intermittent condition could be caused by an improperly installed or damaged EVAP Purge Solenoid Valve
or by a temporary blockage or restriction in the EVAP Purge Solenoid Valve or system tubing.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Evaporative Emission Control System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Verification

1. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
2. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



3. All OK

Circuit/System Testing

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1. Ignition ON, engine OFF.
2. Command the EVAP Purge/Seal function to System Seal with a scan tool to seal the EVAP system.
3. Start the engine.
4. Observe the Fuel Tank Pressure Sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should
be less than 1.7 V after 90 s.
 If not within specifications

Replace the Q12 Evaporative Emission Purge Solenoid Valve

Within Specifications


5. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Evaporative Emission Canister Purge Solenoid Valve Replacement

DTC P0506 OR P0507

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptors

DTC P0506

Idle Speed Low

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P0507

Idle Speed High

Circuit/System Description

The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor
located in the throttle body drives the throttle blade. In order to decrease idle speed, along with spark and fuel
delivery changes the ECM commands the throttle closed reducing air flow into the engine and the idle speed
decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass
the throttle plate.

Conditions for Running the DTC

 DTCs P0068, P0101, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123,

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P0128, P0171, P0172, P0201-P0204, P0220, P0222, P0223, P0300-P0304, P0351-P0354, P0461- P0463,
P0496, P0606, P0722, P0723, P1516, P2066-P2068, P2101, P2135 are not set.
 The engine is operating for at least 60 s.
 The barometric pressure (BARO) is greater than 70 kPa (11 psi).
 The engine coolant temperature (ECT) is greater than 60°C (140°F).
 The system voltage is between 11-32 V.
 The transmission is not changing gears.
 The torque converter clutch (TCC) is not changing states.
 The intake air temperature (IAT) is warmer than -20°C (-4°F).
 The vehicle speed is less than 3 km/h (2 mph).
 The commanded engine speed is steady within 25 RPM.
 The engine is idling for greater than 5 s.
 A scan tool output control is not active.
 DTC P0506 and P0507 run continuously when the above conditions are met for greater than 10 s.

Conditions for Setting the DTC

P0506

The actual idle speed is approximately 91 RPM lower than the desired idle speed.

P0507

The actual idle speed is approximately 182 RPM greater than the desired idle speed.

Action Taken When the DTC Sets

DTCs P0506 and P0507 are Type B DTCs.

Conditions for Clearing the MIL/DTC

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTCs P0506 and P0507 are Type B DTCs.

Diagnostic Aids

 A stalling condition can cause DTC P0506 to set.

 An intermittent vehicle speed sensor (VSS) signal can cause DTC P0507 to set.
 An intermittent clutch pedal position sensor signal, if equipped, can cause DTC P0506 to set.

Reference Information

Schematic Reference

Engine Controls Schematics

cardiagn.com
Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Throttle Actuator Control (TAC) System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify no other DTCs set.
 If any other DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

 If no other DTC is set

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

3. Verify the scan tool Throttle Body Idle Airflow Compensation parameter is less than 90 %.
 90 % or greater

Refer to Throttle Body Inspection and Cleaning .

If less than 90 %


4. Engine Idling at the normal operating temperature.

NOTE: The engine must run for greater than 60 s, then idle at a steady state for an
additional 10 s before comparing the actual and desired engine speed
parameters.

5. Verify the actual Engine Speed is not 100 RPM less than the Desired Idle Speed.

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 If 100 RPM less than the Desired Idle Speed

Refer to Circuit/System Testing below.

If 100 RPM greater than the Desired Idle Speed

6. Verify the actual Engine Speed is not 200 RPM greater than the Desired Idle Speed.
 If 200 RPM greater than the Desired Idle Speed

Refer to Circuit/System Testing below.

If 200 RPM less than the Desired Idle Speed

7. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
8. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



9. All OK

Circuit/System Testing

P0506

1. Verify the conditions listed below do not exist.

 Restricted exhaust

 Mechanical conditions that limits engine speed

 Parasitic load on the engine-For example, a transmission condition, a belt driven accessory
condition.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If a condition is found

Repair as necessary.

If a condition is not found



2. All OK.

P0507

1. Verify the conditions listed below do not exist.

 Vacuum leaks

 A throttle valve that does not close correctly

 Verify the correct operation of the crankcase ventilation system. Inspect for the conditions listed

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below:
 Improper routing of the positive crankcase ventilation (PCV) system

 Vacuum leaks in the PCV system.

 If a condition is found

Repair as necessary.

If a condition is not found



2. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Throttle Body Assembly Replacement

DTC P0601-P0604, P0606, OR P062F (FUEL PUMP CONTROL MODULE)

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0601

Control Module Read Only Memory Performance

DTC P0602
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Control Module Not Programmed

DTC P0603

Control Module Long Term Memory Reset

DTC P0604

Control Module Random Access Memory Performance

DTC P0606

Control Module Processor Performance

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DTC P062F

Control Module Long Term Memory Performance

Circuit/System Description

The internal fault detection is handled inside the fuel pump control module. No external circuits are involved.

Conditions for Running the DTC

The fuel pump control module runs the program to detect an internal fault when power up is commanded. The
only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating
range.

Conditions for Setting the DTC

The fuel pump control module has detected an internal malfunction.

Action Taken When the DTC Sets

DTC P0601, P0602, P0603, P0604, P0606 and P062F are type A DTCs.

Conditions for Clearing the DTC

DTC P0601, P0602, P0603, P0604, P0606 and P062F are type A DTCs.

Reference Information

Description and Operation

Engine Controls Schematics

Electrical Information Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

NOTE: This DTC may be stored as a history DTC without affecting the operation of the
module. If stored only as a history DTC and not retrieved as a current DTC, do

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not replace the module.

1. Ignition ON.
2. Verify DTC P0602 is not set.
 If DTC P0602 is set

1. Program the K27 fuel pump control module.

2. Verify the DTC does not set.
 If the DTC sets, replace the K27 fuel pump control module.

 If the DTC does not set.

3. All OK.
 If DTC P0602 is not set

3. Verify DTCs P0601, P0603, P0604, P0606, and P062F are not set.
 If any of the DTCs are set

1. Program the K27 fuel pump control module.

2. Verify the DTC does not set.
 If the DTC sets, replace the K27 fuel pump control module.

 If the DTC does not set.

3. All OK.
 If none of the DTCs are set

4. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for fuel pump control module replacement, programming and setup

DTC P0601-P0604, P0606, P062B, P062F, P0630, P16F3, OR P262B (ECM)

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each of the diagnostic category.

DTC Descriptors

DTC P0601

Control Module Read Only Memory Performance

DTC P0602

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Control Module Not Programmed

DTC P0603

Control Module Long Term Memory Reset

DTC P0604

Control Module Random Access Memory Performance

DTC P0606

Control Module Processor Performance

DTC P062F

Control Module Long Term Memory Performance

DTC P0630

VIN Not Programmed or Mismatched - Engine Control Module (ECM)

DTC P16F3

Control Module Redundant Memory Performance

DTC P262B

Control Module Power Off Timer Performance

Circuit/System Description

This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

This diagnostic also addresses if the ECM is not programmed.

Conditions for Running the DTCs

P0601, P0602, P0630

These DTCs run continuously when the ignition is in ON.

P0603, P062F

These DTCs run once per ignition cycle.

P0604

DTC P0604 runs continuously when the ignition is ON for greater than 30 s.

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P0606

DTC P0606 runs continuously when Ignition 1 Signal voltage is greater than 11 V.

P16F3

 The engine speed is greater than 500 RPM.

 DTCs P0101, P0102, P0103, P0106, P0107, P0108, P2227, P2228, P2229, or P2230 are not set.
 DTC P16F3 runs continuously when the above conditions are met.

P262B

DTC P262B runs on ECM power down.

Conditions for Setting the DTCs

The ECM detects an internal failure or incomplete programming for more than 10 s.

Actions Taken When the DTC Sets

 DTCs P0601, P0602, P0603, P0604, P0606, P062F, P0630, and P16F3 are Type A DTCs.
 DTC P262B is a Type B DTC.

Conditions for Clearing the MIL/DTC

 DTCs P0601, P0602, P0603, P0604, P0606, P062F, P0630, and P16F3 are Type A DTCs.
 DTC P262B is a Type B DTC.

Diagnostic Aids

Low voltage or a momentary loss of power or ground to the ECM may cause a DTC to set. Verify the
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

following:

 The battery cables are clean and tight, and the battery is fully charged. Refer to Battery Inspection/Test .
 The ECM ground circuits do not have an open or high resistance.
 The ECM power circuits do not have an open, short to ground, or high resistance.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

cardiagn.com
COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, clear the DTC information with a scan tool. Observe the DTC information with a scan tool.
2. Verify that DTC P0641, P0651, P0697, or P06A3 does not set.
 If a DTC is set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

If DTC P0641, P0651, P0697, or P06A3 does not set



3. Observe the DTC information with a scan tool. Verify DTC P0602 or P0630 is not set.
 If DTC P0602 or P0630 is set

1. Program the K20 Engine Control Module. Refer to Control Module References .
2. Verify DTC P0602 or P0630 is not set.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If DTC P0602 or P0630 sets, replace the K20 Engine Control Module.


 If DTC P0602 or P0630 does not set

3. All OK.
 If DTC P0602 or P0630 is not set

4. Verify DTC P0601, P0603, P0604, P0606, P062F, P16F3, or P262B is not set.
 If DTC P0601, P0603, P0604, P0606, P062F, P16F3, or P262B is set

Replace the K20 Engine Control Module.

If DTC P0601, P0603, P0604, P0606, P062F, P16F3, or P262B is not set


5. All OK.

Repair Instructions

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Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Engine Control Module replacement, programming and setup

DTC P0627-P0629

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0627

Fuel Pump Enable Circuit

DTC P0628

Fuel Pump Enable Circuit Low Voltage

DTC P0629

Fuel Pump Enable Circuit High Voltage

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
Control P0628 P0627, P0628 P0629 -
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Description

The engine control module (ECM) provides ignition voltage to the fuel pump flow control module whenever the
engine is cranking or running. The control module enables the fuel pump flow control module as long as the
engine is cranking or running, and ignition system reference pulses are received. While this enable voltage is
being received, the fuel pump flow control module supplies a varying voltage to the in-tank fuel pump module
in order to maintain the desired fuel line pressure.

Conditions for Running the DTC

P0627 and P0629

 The ignition voltage is between 11-32 V.

 The ECM has commanded the fuel pump OFF.

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 The DTCs run continuously when the above conditions are met for greater than 1 s.

P0628

 The ignition voltage is between 11-32 V.

 The ECM has commanded the fuel pump ON.
 The DTC runs continuously when the above conditions are met for greater than 1 s.

Conditions for Setting the DTC

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match
for greater than 2.5 s.

Action Taken When the DTC Sets

DTCs P0627, P0628, and P0629 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0627, P0628, and P0629 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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Circuit/System Verification

1. Ignition ON.
2. Verify that DTC P0627, P0628, or P0629 is not set.
 If a DTC is set

Refer to Circuit/System Testing below.

If a DTC is not set

3. Verify the parameters listed below do not display Malfunction when commanding the Fuel Pump Enable
On and Off with a scan tool.
 Fuel Pump Enable Circuit Low Voltage Test Status

 Fuel Pump Enable Circuit Open Test Status

 Fuel Pump Enable Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not displayed

4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
5. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



6. All OK.

Circuit/System Testing
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Install two 3 A fused jumper wires at the harness connector between the following terminals:
 Terminal 5 and terminal 6

 Terminal 17 and terminal 18

3. Ignition ON for 10 s.
4. Verify that a test lamp does not illuminate between the control circuit terminal 20 and ground.
 If the test lamp illuminates

1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

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 If the test lamp does not illuminate

5. Remove the test lamp.

6. Verify the scan tool Fuel Pump Enable Circuit Low Voltage Test Status parameter is OK when
commanding the Fuel Pump Enable On with a scan tool.
 If OK is not displayed

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If OK is displayed

7. Install a 3 A fused jumper wire between the control circuit terminal 20 and ground.
8. Verify the scan tool Fuel Pump Enable Circuit Low Voltage Test Status parameter is Malfunction when
commanding the Fuel Pump Enable On with a scan tool.
 If Malfunction is not displayed

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module.
2. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If Malfunction is displayed

9. Replace the K27 Fuel Pump Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Engine Control Module or Fuel Pump Flow Control Module replacement,
programming, and setup
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DTC P0641 OR P06A6 (FUEL PUMP CONTROL MODULE)

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0641

5 V Reference Circuit

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DTC P06A6

5 V Reference 1 Performance

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P018C, P0641, P018D,
5 V Reference P018C P06A6
P06A6 P0641, P06A6
Signal P018C P018B, P018C P018D P018B
Low Reference - P0641, P06A6 - P06A6

Circuit/System Description

The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the
fuel line. The fuel pump control module monitors the voltage signal from the fuel pressure sensor.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The fuel pump control module detects that the fuel pressure 5 V reference is above or below a predetermined
voltage threshold.

Action Taken When the DTC Sets

DTCs P0641 and P06A6 are Type A DTCs.

Conditions for Clearing the DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTCs P0641 and P06A6 are Type A DTCs.

Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the
information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and
Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

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COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B47 Fuel Pressure
Sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.
 If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If less than 10 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.

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 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module, ignition
ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K27 Fuel Pump Control Module.

 If between 4.8-5.2 V

5. Verify the scan tool Fuel Pressure Sensor Voltage parameter is less than 1 V.
 If 1 V or greater

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module, ignition
ON.
2. Test for less than 1 V between the signal circuit terminal 1 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K27 Fuel Pump Control Module.

 If less than 1 V

6. Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal
3, wait 15 seconds.
7. Verify the scan tool Fuel Pressure Sensor Voltage parameter is greater than 4.8 V.
 If 4.8 V or less

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for infinite resistance between the signal circuit terminal 1 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.
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If less than 2 ohms, replace the K27 Fuel Pump Control Module.


 If greater than 4.8 V

8. Test or replace the B47 Fuel Pressure Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for fuel pump control module replacement, programming and setup

DTC P0641, P0651, P0697, OR P06A3 (ECM)

Diagnostic Instructions

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 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0641

5V Reference 1 Circuit

DTC P0651

5V Reference 2 Circuit

DTC P0697

5V Reference 3 Circuit

DTC P06A3

5V Reference 4 Circuit

Circuit/System Description

The engine control module (ECM) has 4 internal 5V reference circuits. Each internal reference circuit provides
external 5V reference circuits for more than one sensor. A short to ground or short to voltage on one external 5
V reference circuit can affect all the components connected to the same internal 5V reference circuit.

Conditions for Running the DTC

These DTCs run continuously when the ignition voltage is greater than 6.4 V.

Conditions for Setting the DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The ECM detects a short to ground or voltage on any of the 5V reference circuits for greater than 0.5 s.

Action Taken When the DTC Sets

DTCs P0641, P0651, P0697, and P06A3 are Type A DTCs.

Conditions for Clearing the DTC

DTCs P0641, P0651, P0697, and P06A3 are Type A DTCs.

Diagnostic Aids

P0641

The 5V reference 1 circuit provides 5 V circuits to the sensors listed below:

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 Air conditioning (A/C) refrigerant pressure sensor
 Exhaust and intake camshaft position sensors
 Fuel tank pressure sensor
 Intake manifold pressure and air temperature sensor

P0651

The 5V reference 2 circuit provides 5 V circuits to the sensors listed below:

 Brake pedal position sensor (automatic transmission)

 Clutch pedal position sensor (manual transmission)
 Crankshaft position sensor
 Multifunction intake air sensor
 Vehicle speed sensor (manual transmission)

P0697

The 5V reference 3 circuit provides 5 V circuits to the sensors listed below:

 Accelerator pedal position sensor 2

 Manifold absolute pressure sensor

P06A3

The 5V reference 4 circuit provides 5 V circuits to the sensors listed below:

 Accelerator pedal position sensor 1

 Throttle position sensor 1 and 2
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Disconnecting one component at a time from the affected 5V reference circuit while observing the scan tool 5V
Reference Circuit Status parameter may help locate the fault. The scan tool parameter will change from
Malfunction to OK when the source of the fault is disconnected. If all 5V reference components have been
disconnected and a fault is still indicated, the fault may exist in the wiring harness.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

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Component View Reference

Powertrain Component Views

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify all scan tool 5V Reference Circuit Status parameters do not display Malfunction.
 If Malfunction is displayed

Refer to Circuit/System Testing below.

If Malfunction is not displayed

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



5. All OK.

Circuit/System Testing

NOTE: Additional DTCs will set when disconnecting the components.

1. Ignition OFF, disconnect the harness connector at all appropriate sensors for the applicable DTC. Refer to
Diagnostic Aids.
2. Ignition ON.

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3. Test for 4.8-5.2 V between one of the 5V reference circuits and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connectors at the K20 Engine Control Module.
2. Test for infinite resistance between the 5V reference circuit for each applicable component and
ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connectors at the K20 Engine Control Module.
2. Test for less than 1 V between the 5V reference circuit for each applicable component and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

NOTE: A short to voltage or ground on the signal circuit of certain components

may cause this DTC to set.

4. Verify the appropriate scan tool 5V Reference 1, 2, 3, or 4 Circuit Status parameter displays OK while
connecting each component associated with the 5V reference circuit one at a time.
 If OK is not displayed when a component is connected

Replace the component.

If OK is displayed after all components have been connected



5. All OK.

Repair Instructions
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the repair.

 Accelerator Pedal Position Sensor Replacement

 Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
 Brake Pedal Position Sensor Replacement
 Camshaft Position Sensor Replacement
 Clutch Pedal Position Sensor Replacement
 Crankshaft Position Sensor Replacement
 Fuel Tank Pressure Sensor Replacement
 Intake Air Pressure and Temperature Sensor Replacement
 Manifold Absolute Pressure Sensor Replacement
 Mass Airflow Sensor Replacement

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 Throttle Body Assembly Replacement
 Vehicle Speed Sensor Replacement
 Control Module References for engine control module replacement, programming, and setup.

DTC P0650

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
Ignition Voltage P0650 P0650 - -
MIL Control * P0650 P0650 P0650 -
* The MIL remains ON

Circuit/System Description

The malfunction indicator lamp (MIL) illuminates to inform the driver that an emission system fault has
occurred and the engine control system requires service. Ignition voltage is supplied directly to the MIL. The
engine control module (ECM) turns the MIL ON by grounding the MIL control circuit when the emission fault
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

occurs. Under normal operating conditions, the MIL should be ON only when the ignition is ON and the engine
is OFF.

Conditions for Running the DTC

 DTCs P0601, P0604, P0605, P0606, P0607, and P2610 are not set
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

 The ECM detects that the commanded state of the MIL driver and the actual state of the control circuit do
not match for more than 1 s.
 Should a short circuit to B+ or an open circuit occur on the MIL control circuit, the MIL must be
commanded ON for the DTC to set. A short circuit to ground on the MIL control circuit can be detected

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immediately by the ECM in the commanded OFF state.

Action Taken When the DTC Sets

DTC P0650 is a Type B DTC, with no MIL request.

Conditions for Clearing the DTC

DTC P0650 is a Type B DTC, with no MIL request.

Diagnostic Aids

If the condition is intermittent, move the related harnesses and connectors while monitoring the scan tool MIL
control circuit status parameters. Perform this test with the ignition ON and the engine OFF, and with the engine
running. The MIL control circuit status parameters change from OK or Not Run to Fault if there is a condition
with a circuit or a connection.

Reference Information

Schematic Reference

 Engine Controls Schematics

 Instrument Cluster Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Command the malfunction indicator lamp ON and OFF with a scan tool.

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3. Verify that the malfunction indicator lamp turns ON and OFF as commanded.
 If the malfunction indicator lamp does not turn ON and OFF as commanded

Refer to Circuit/System Testing below.

 If the malfunction indicator lamp turns ON and OFF as commanded

4. Ignition ON.
5. Command the malfunction indicator lamp ON and OFF with a scan tool and verify that the control circuit
status parameters listed below display OK or Not Run.
 The MIL Control Circuit Low Voltage Test Status

 The MIL Control Circuit Open Test Status

 The MIL Control Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

 If OK or Not Run is displayed

6. Engine running.
7. Command the malfunction indicator lamp ON and OFF with a scan tool and verify that the control circuit
status parameters listed below display OK or Not Run.
 The MIL Control Circuit Low Voltage Test Status

 The MIL Control Circuit Open Test Status

 The MIL Control Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

If OK or Not Run is displayed



8. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

the conditions that you observed from the Freeze Frame/Failure Records data.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



9. All OK.

Circuit/System Testing

1. Ignition OFF.
2. Disconnect the X1 harness connector at the K20 Engine Control Module.
3. Ignition ON.

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4. Verify the malfunction indicator lamp does not illuminate.
 If the malfunction indicator lamp illuminates

1. Test for infinite resistance between the malfunction indicator lamp control circuit terminal X1 52
and ground.
 If less than infinite resistance, repair the short to ground in the circuit.

 If resistance is infinite, replace the P16 instrument cluster.

 If the malfunction indicator lamp does not illuminate

5. Connect a 3 A fused jumper wire between the malfunction indicator lamp control circuit terminal X1 52
and ground.
6. Verify the malfunction indicator lamp illuminates.
 If the malfunction indicator lamp does not illuminate

1. Test the malfunction indicator lamp control circuit terminal X1 52 for a short to voltage or an
open/high resistance.
 If the malfunction indicator lamp control circuit terminal X1 52 is shorted to voltage or has
an open/high resistance, repair as necessary.
 If the malfunction indicator lamp control circuit terminal X1 52 tests normal

2. Test the instrument cluster ignition voltage circuit for a short to ground or an open/high resistance.
 If the instrument cluster ignition voltage circuit is shorted to ground or has an open/high
resistance, repair as necessary.
 If the instrument cluster ignition voltage circuit tests normal, replace the P16 instrument
panel cluster/bulb.
 If the malfunction indicator lamp illuminates

7. Replace the K20 Engine Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Instrument Cluster Replacement

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Control Module References for ECM replacement, programming and setup

DTC P0685, P0686, P0687, P0689, P0690, OR P1682

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0685

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Engine Controls Ignition Relay Control Circuit

DTC P0686

Engine Controls Ignition Relay Control Circuit Low Voltage

DTC P0687

Engine Controls Ignition Relay Control Circuit High Voltage

DTCP0689

Engine Controls Ignition Relay Feedback Circuit Low Voltage

DTC P0690

Engine Controls Ignition Relay Feedback Circuit High Voltage

DTC P1682

Ignition 1 Switch Circuit 2

Diagnostic Fault Information

Powertrain Relay
Circuit Short to Ground Open/High Resistance Short to Voltage
Relay Coil Supply Voltage P0689, P1682 P0685, P0689, P1682 -
P0685, P0687,
Relay Control Circuit P0686, P0690 P0685, P0689, P1682
P0689, P1682
Relay Feedback Circuit P0689, P1682 P0689, P1682 P0690

Ignition Main Relay

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit Short to Ground Open/High Resistance Short to Voltage

Ignition 1 Signal 1 1 2
1. No Crank condition.
2. Engine continues to operate with ignition OFF.

Typical Scan Tool Data

Engine Controls Ignition Relay Control Circuit Low Voltage, Open, and High Voltage Test Status-
Component Commanded OFF
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Component commanded OFF
Parameter Normal Range: The following illustrates the normal parameter state with no circuit
conditions:

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 Component OFF - OK for Open/Low Voltage Test Status and Not Run for High Voltage Test
Status
 Component ON - Not Run for Open/Low Voltage Test Status and OK for High Voltage Test Status

Battery Voltage Malfunction Malfunction -

Engine Controls Ignition Relay
Malfunction Malfunction Not Run
Control Circuit

Engine Controls Ignition Relay Control Circuit Low Voltage, Open, and High Voltage Test Status-
Component Commanded ON
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Component commanded ON
Parameter Normal Range: The following illustrates the normal parameter state with no circuit
conditions:

 Component OFF - OK for Open/Low Voltage Test Status and Not Run for High Voltage Test
Status
 Component ON - Not Run for Open/Low Voltage Test Status and OK for High Voltage Test Status

Battery Voltage Not Run Not Run -

Engine Controls Ignition Relay
Not Run Not Run Malfunction
Control Circuit

Circuit/System Description

There are 2 ignition voltage circuits supplied to the engine control module (ECM). One is supplied by the
powertrain relay, and the other is supplied by the ignition main relay. The ECM monitors and compares the
ignition voltage supplied by the 2 relays.

Conditions for Running the DTC

P0685, P0686, P0687

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

The DTC runs when Ignition 1 signal voltage is greater than 11 V.

P0689

 DTC P0685 is not set.

 The powertrain relay is commanded ON.
 Ignition 1 signal voltage is greater than 11 V.
 The DTC runs continuously when the above conditions are met.

P0690

 P0685 is not set.

 The powertrain relay is commanded OFF.

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 The DTC runs continuously when the above conditions are met.

P1682

 The powertrain relay is commanded ON.

 Ignition voltage is greater than 5.5 V.
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

P0685

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match
for greater than 2 s.

P0686

The ECM detects a short to ground on the control circuit for greater than 2 s.

P0687

The ECM detects a short to voltage on the control circuit for greater than 2 s.

P0689

The ECM detects the engine controls ignition relay feedback circuit is less than 5 V when the powertrain relay
is commanded ON.

P0690

 The ECM detects the engine controls ignition relay feedback circuit is greater than 4 V when the
powertrain relay is commanded OFF.
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 The condition is present for greater than 5 s.

P1682

The ECM detects that the voltage level difference is greater than 3 V between the 2 ignition voltage circuits for
less than 1 s.

Action Taken When the DTC Sets

 DTCs P0685, P0686, P0687, P0689, and P0690 are Type B DTCs.
 DTC P1682 is a Type A DTC.

Conditions for Clearing the DTC

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 DTCs P0685, P0686, P0687, P0689, and P0690 are Type B DTCs.
 DTC P1682 is a Type A DTC.

Diagnostic Aids

The powertrain relay may also be labeled the engine controls ignition relay, the engine control module relay, or
the main relay. The ignition main relay may also be labeled the run/crank relay, the ignition run relay, the
ignition 1 relay, or the ignition relay.

Reference Information

Schematic Reference

 Engine Controls Schematics

 Power Distribution Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Electrical Center Identification Views
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE:  A short to voltage on other components may cause DTC P0690 to set.
If any other DTC is set, diagnose that DTC first.
 If you were sent here from Engine Cranks But Does Not Run, proceed
to Circuit/System Testing.

1. Ignition ON, observe the scan tool DTC information. Verify DTC P0685, P0686, P0687, P0689, P0690,
or P1682 is not set.
 If any of the DTCs are set

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Refer to Circuit/System Testing below

If none of the DTCs are set

2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
 If any of the DTCs are set

Refer to Circuit/System Testing below

If none of the DTCs are set



3. All OK.

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing unless sent here from Engine Cranks But Does Not Run.

1. Ignition OFF, disconnect the KR75 Powertrain Relay.

2. Verify a test lamp illuminates between ground and the relay circuit terminals listed below:
 Terminal 1

 Terminal 3

 If the test lamp does not illuminate

Replace the front compartment fuse block. Refer to Front Compartment Fuse Block
Replacement .

 If the test lamp illuminates

NOTE:  High resistance in the circuit/underhood fuse block for either

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

the powertrain relay or the ignition main relay can cause DTC
P1682 to set.
 A short to voltage on any of the circuits supplied by the
powertrain relay can cause DTC P0690 to set.

3. Ignition ON.
4. Verify that a test lamp does not illuminate between the ignition voltage circuit terminal 5 and ground.
 If the test lamp illuminates

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Ignition ON.
3. Test for less than 1 V between ground and connector terminals 28.
 If 1 V or greater, repair the short to voltage in the circuit.

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 If less than 1 V, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

5. Ignition OFF, connect a 20 A fused jumper wire between the relay switch B+ circuit terminal 3 and the
relay switch ignition voltage circuit terminal 5.
6. Ignition ON.
7. Observe the scan tool Engine Controls Ignition Relay Feedback Signal parameter. The K20 Engine
Control Module should communicate, and the parameter should display B+.
 If the parameter does not display B+ or the K20 Engine Control Module does not
communicate and the circuit fuse is good
1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module
2. Test for less than 2 ohms in the relay switch ignition voltage circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms verify the fuse is not open and there is voltage at the fuse.

 If the parameter does not display B+ or the K20 Engine Control Module does not
communicate and the circuit fuse is open
1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module
2. Test for infinite resistance between the relay switch ignition voltage circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the parameter displays B+

8. Ignition OFF, connect a DMM, set to the diode setting, between control circuit terminal 2 and ground.
9. Verify the DMM displays OL.
 If the DMM does not display OL

1. Disconnect the X1 harness connector at the K20 Engine Control Module.

2. Test for infinite resistance between ground and the relay control circuit.
 If less than infinite resistance, repair the short to ground in the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

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 If the DMM displays OL

10. Ignition ON.
11. Verify the DMM displays less than 1 V.
 If the DMM does not display less than 1 V

1. Ignition OFF, disconnect the X1 connector at the K20 Engine Control Module.
2. Ignition ON.
3. Test for less than 1 V on the relay control circuit.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

4. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

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 if less than 2 ohms, replace the K20 Engine Control Module.

 If the DMM displays less than 1 V

12. Test or replace the KR75 Powertrain Relay.

Component Testing

Relay Test

1. Ignition OFF, disconnect the KR75 Powertrain Relay.

2. Test for 70-110 ohms between terminals 1 and 2:
 If less than 70 ohms or greater than 110 ohms

Replace the relay.

 If between 70-110 ohms

3. Test for infinite resistance between the terminals listed below:
 3 and 2

 3 and 5

 3 and 1

 1 and 5

 If less than infinite resistance

Replace the relay.

 If infinite resistance
4. Install a 20 A fused jumper wire between relay terminal 1 and 12 V. Install a jumper wire between relay
terminal 2 and ground.
5. Test for less than 2 ohms between terminals 3 and 5.
 If 2 ohms or greater
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Replace the relay.

If less than 2 ohms



6. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Relay Replacement (Within an Electrical Center) , Relay Replacement (Attached to Wire Harness)
 Control Module References for Engine Control Module replacement, programming, and setup

DTC P069E

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Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle Prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P069E

Fuel Pump Control Module Requested MIL Illumination

Circuit/System Description

The fuel pump control module monitors the fuel pump control system for any conditions which may adversely
affect vehicle emissions. If an adverse condition is detected, the fuel pump control module sets a fuel pump
control system DTC. The fuel pump control module then sends a serial data message to the engine control
module (ECM) requesting malfunction indicator lamp (MIL) illumination. When the ECM receives the message
from the fuel pump control module, DTC P069E will set in the ECM.

Conditions for Running the DTC

The ignition is ON, or the engine is running for greater than 3 s.

Conditions for Setting the DTC

The fuel pump control module requests the ECM to illuminate the MIL.

Action Taken When the DTC Sets

 DTC P069E is a Type A DTC.

 DTC P069E will continue to be current or active as long as the fuel pump control module is requesting
MIL illumination.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Conditions for Clearing the DTC

DTC P069E is a Type A DTC.

Diagnostic Aids

Communication codes, U-codes, as well as powertrain codes, P-codes, set in the fuel pump control module will
cause the fuel pump control module to request DTC P069E to be set in the ECM.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

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Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE:  Do not replace the engine control module for this DTC. DTC P069E is
an informational DTC.
 Correct any engine control and communication DTCs before
diagnosing fuel pump control module DTCs.

1. Verify there are no engine control or communication DTCs set.

 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If a DTC is not set

2. Verify there are no fuel pump control module DTCs set.
 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If a DTC is not set

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If the DTC does not set



5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

DTC P0700

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each of the diagnostic category.

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DTC Descriptor

DTC P0700

Transmission Control Module Requested MIL Illumination

Circuit/System Description

Diagnostic trouble code (DTC) P0700 is an informational DTC that indicates that an emission related
transmission DTC has set in the transmission control module (TCM). The engine control module (ECM) turns
ON the malfunction indicator lamp (MIL) when the TCM sends a message over the serial data circuit requesting
MIL illumination. The DTC information for the ECM will only display DTC P0700, and the ECM Freeze
Frame/Failure Records data will display the engine operating conditions that were present when the
transmission DTC was set. The TCM Freeze Frame/Failure records data is available from the DTC that was set
in the TCM.

Conditions for Running the DTC

 The ignition is ON or the engine is operating.

 DTC P0700 runs continuously.

Conditions for Setting the DTC

The ECM receives a serial data message from the TCM requesting the ECM to turn ON the MIL.

Action Taken When the DTC Sets

DTC P0700 is a Type A DTC.

Conditions for Clearing the MIL/DTC

DTC P0700 is a Type A DTC.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Diagnostic Aids

Communication codes, U-codes, as well as powertrain codes, P-codes, set in the TCM can cause the TCM to
request DTC P0700 to be set in the ECM.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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Circuit/System Verification

NOTE:  Do not replace the engine control module for this DTC. DTC P0700 is
an informational DTC.
 Correct any engine control and communication DTCs before
diagnosing transmission control module DTCs.

1. Verify there are no engine control or communication DTCs set.

 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If a DTC is not set

2. Verify there are no transmission control module DTCs set.
 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If a DTC is not set

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If the DTC does not set



5. All OK.

Repair Instructions
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the repair.

DTC P11C2 OR P11C3

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P11C2

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Intake Air Humidity Sensor Circuit Low Voltage

DTC P11C3

Intake Air Humidity Sensor Circuit High Voltage

Diagnostic Fault Information

Intake Air Humidity Sensor

Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P0097**, P0097**,
P0096**, P0097**,
P0651, P11C2, P0651, P11C2,
5 V Reference P11C2, P2199**, -
P2199**, P2199**,
P2227, P2228
P2227, P2228 P2227, P2228
P0097**, P0097**,
P0097**, P11C2,
Signal P11C3, P11C2*, -
P2199**
P2199** P2199**
P0097**, P0113,
Low Reference - P11C2, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
**Where

Typical Scan Tool Data

Intake Air Humidity

Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient humidity and temperature; and engine bay conditions
5 V Reference 0% 0% -
Signal 100 % 0% 0 %*
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Low Reference - 0% *
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The sensors listed below are integrated within the multifunction intake air sensor:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 MAF sensor
 BARO pressure sensor

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The intake air humidity sensor measures the ambient humidity of the air in the sensor bore. The signal varies
with intake air humidity and is displayed by the scan tool as duty cycle %. The engine control module (ECM)
applies 5 V to the signal circuit. The humidity sensor and the IAT sensor 2 share the same circuit.

The sensors listed below share an ECM supplied 5 V reference circuit:

 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

The sensors listed below share an ECM supplied low reference circuit:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

Conditions for Running the DTCs

P11C2 and P11C3

 DTC P1682 is not set.

 The ignition is ON.
 The Ignition voltage is at least 11 V.
 These DTCs run continuously within the enabling conditions.

Conditions for Setting the DTCs

P11C2

The ECM detects that the humidity sensor signal is less than or equal to 5 % for greater than 5 s.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P11C3

The ECM detects that the humidity sensor signal is greater than or equal to 95 % for greater than 5 s.

Action Taken When the DTC Sets

 DTCs P11C2 and P11C3 are Type B DTCs.

 DTCs P11C2 and P11C3 are Type C DTCs; with RPO LDD.

Conditions for Clearing the MIL/DTC

 DTCs P11C2 and P11C3 are Type B DTCs.

 DTCs P11C2 and P11C3 are Type C DTCs; with RPO LDD.

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Diagnostic Aids

 The Intake Air Humidity Signal parameter displays the measured humidity within the air intake system
and may differ from atmospheric humidity measured outside the air intake system.
 The humidity sensor and the IAT sensor 2 signals are sent to the ECM on the same circuit. If the Intake
Air Humidity parameter displays the value: 0 % or 100 %, and there are also IAT Sensor 2 DTCs, check
for a circuit problem.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Special Tools

EL-38522-A Variable Signal Generator

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON, verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

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NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 2 and 3 of this verification procedure only if the
ignition has been OFF for 8 hours or more.

2. Ignition ON.
3. Verify the following scan tool parameters are within 25°C (45°F) of each other.
 Start-Up IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3; where equipped

 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

If within 25°C (45°F)



4. Engine idling, verify the scan tool Intake Air Humidity parameter is between 5 and 90 %.
 If not between 5 and 90 %

Refer to Circuit/System Testing below.

If between 5 and 90 %

5. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
6. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

If the DTC does not set



7. All OK
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Ignition OFF, and all vehicle systems OFF, it may take up to 2 min. for all vehicle systems to power
down. Disconnect the harness connector at the B75C Multifunction Intake Air sensor.
2. Test for less than 2 ohms between the low reference circuit terminal 7 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

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 If less than 2 ohms

3. Ignition OFF, all vehicle systems OFF, test for less than 2 ohms between the ground circuit terminal 4
and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the ground circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms, repair the open/high resistance in the ground connection.

 If less than 2 ohms

4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the 5 V reference circuit is shorted to a voltage the engine control

module or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If between 4.8-5.2 V
5. Ignition ON, test for 4.8-5.2 V between the humidity signal circuit terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

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NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

1. Replace the K20 Engine Control Module.

2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 10.

If no DTCs set

4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

7. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 1 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

8. Set the EL-38522-A Variable Signal Generator to the following specifications.

 Signal switch to 5 V
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Frequency switch to 250 Hz

 Duty Cycle switch to 50 % (Normal)

9. Ignition ON, verify the scan tool Intake Air Humidity parameter is between 45-55 %.
 If not between 45-55 %

Replace the K20 Engine Control Module.

If between 45-55 %

10. Test or replace the B75C Multifunction Intake Air sensor.

Component Testing

Multifunction Intake Air Sensor

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1. Test the Intake Air Humidity Sensor by varying the air humidity in the intake duct near the sensor, while
observing the scan tool Intake Air Humidity Sensor parameter. The parameter should change and be
within 5-95%.
 If not within 5-95%.

Replace the B75C Multifunction Intake Air sensor.

If within 5-95%.


2. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement.
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P1255 OR P064A

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P064A

Fuel Pump Control Module Performance

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P1255

Fuel Pump Control Module Driver High Temperature

Circuit/System Description

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that
the ignition is on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds,
unless the engine is in crank or run. While this voltage is being received, the fuel pump control module supplies
a varying voltage to the fuel tank pump module in order to maintain the desired fuel pressure.

Conditions for Running the DTC

The engine is running.

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Conditions for Setting the DTC

The fuel pump control module detects an over-temperature fault.

Action Taken When the DTC Sets

DTCs P064A and P1255 are Type A DTCs.

Conditions for Clearing the DTC

DTCs P064A and P1255 are Type A DTCs.

Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the
information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and
Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0231, P0232 or P023F is not set.
 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If none of the DTCs are set

3. Verify that the area where the K27 fuel pump control module is located is free of debris, clutter, or any
insulating material that would cause the K27 fuel pump control module to overheat.
 If any debris, clutter, or other material is found

1. Clear the area where the K27 fuel pump control module is located.
2. Clear the DTC and test drive the vehicle.
3. Verify DTC P1255 or P064A is not set.
 If DTC P1255 or P064A is set, replace the K27 fuel pump control module.

 If DTC P1255 or P064A is not set

4. All OK.
 If no debris, clutter, or other material is found

4. Clear the DTC and test drive the vehicle.

5. Verify DTC P1255 or P064A is not set.
 If DTC P1255 or P064A is set

Replace the K27 fuel pump control module.

If DTC P1255 or P064A is not set.



6. All OK.

Repair Instructions
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for fuel pump control module replacement, programming and setup

DTC P1400

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptor

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DTC P1400

Cold Start Emission Reduction Control System

Circuit/System Description

The catalyst must be warmed to efficiently reduce the emissions. The cold start strategy is to reduce the amount
of time it takes to warm the catalyst. During a cold start, the engine idle speed is elevated and spark timing is
retarded to allow the catalyst to warm quickly. This diagnostic monitors the following to build an exhaust
energy model:

 Engine speed
 Spark advance
 Throttle position
 Engine airflow
 Engine coolant temperature
 Engine run time
 Park/neutral position
 Vehicle speed

The actual model is then compared to the expected exhaust energy model.

Conditions for Running the DTC

 DTCs P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0114, P0116, P0117, P0118, P0121,
P0122, P0123, P0222, P0223, P0201, P0202, P0203, P0204, P0300, P0301, P0302, P0303, P0304,
P0335, P0336, P0351, P0352, P0353, P0354, P0502, P0503, P0506, P0507, P0641, P0651, P0697,
P06A3, P0806, P0807, P080A, P2122, P2123, P2125, P2127, P2128, P2135, P2138, and P2544 are not
set.
 The engine is idling less than 30 s.
 The engine coolant temperature (ECT) sensor is greater than -10°C (14°F).
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 The calculated 3-way catalyst temperature is less than 350°C (662°F).

 The ECM will exit the diagnostic if the calculated 3-way catalyst temperature is greater than 420°C (788°
F) when the engine run time is greater than 30 s.
 The ECM will exit the diagnostic if the engine run time is greater than 90 s.
 The vehicle speed is less than 2 km/h (1 MPH).
 The engine is at idle with no input from the accelerator pedal.

This DTC runs within the first 90 s of start-up. This diagnostic runs once per trip when a cold start has been
determined.

Conditions for Setting the DTC

The actual exhaust energy model does not match the expected exhaust energy model.

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Action Taken When the DTC Sets

DTC P1400 is a Type A DTC.

Conditions for Clearing the DTC

DTC P1400 is a Type A DTC.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition OFF, allow the engine to cool.

2. Engine idling for at least 2 min, observe the scan tool DTC information. DTC P1400 should run and pass.
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You
may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure
Records data.

Circuit/System Testing

1. Inspect the air intake system for the following:

 Damage, restriction, or modification

 Dirty or deteriorating air filter element

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Crankcase ventilation system for correct operation.

 Water intrusion

 Vacuum leak and other unmetered air downstream of the mass air flow (MAF) sensor

 Intake manifold leak

2. Inspect the exhaust system for the following:

 Water intrusion

 Exhaust leak

 Damaged, restricted, or modified exhaust system. Refer to Symptoms - Engine Exhaust .

3. Inspect for an engine mechanical condition that could alter the air flow into the combustion chamber.
Refer to Symptoms - Engine Mechanical .

Repair Instructions

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Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

DTC P150C

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P150C

Transmission Control Module Engine Speed Request Signal Message Counter Incorrect

Circuit/System Description

This diagnostic applies to communication integrity between the engine control module (ECM) and the
transmission control module (TCM). The ECM determines that the engine speed signal counter is incorrect for
the current vehicle operation.

Conditions for Running the DTC

 The ignition switch is in Unlock, Accessory, Run or Crank.

 The system voltage is more than 5.23 V.
 DTCs P0601, P0602, P0603, P0604, P0606, P0607, P062F, P0641, P0651, P2610 and U0101 are not set.

Conditions for Setting the DTC

The ECM detects that the TCM engine speed request circuit does not match the expected engine speed request
circuit. Each test runs in 5 milliseconds. This DTC runs continuously.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Action Taken When the DTC Sets

DTC P150C is a Type B DTC.

Conditions for Clearing the DTC

DTC P150C is a Type B DTC.

Reference Information

Description and Operation

Engine Control Module Description

DTC Type Reference

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Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

K20 Engine Control Module: Scan Tool Information for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information with a scan tool. DTC U0101 should not be set.
 If DTC U0101 is set, repair that DTC first.

2. Observe the DTC information with a scan tool. DTCs P0601, P0603, P0604, P0606, P0607, P0610,
P062B, P0630, P167D or P2610 should not set. If a DTC failed this ignition, replace the K20 Engine
Control Module. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does
not reset. You may also operate the vehicle within the conditions that you observed from the Freeze
Frame/Failure Records data.

Circuit/System Testing

Replace the K71 Transmission Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, programming and setup

DTC P1516, P2101, P2119, OR P2176

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Review Strategy Based Diagnosis for an overview of the diagnostic approach.

 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P1516

Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

DTC P2101

Throttle Actuator Position Performance

DTC P2119

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Throttle Closed Position Performance

DTC P2176

Minimum Throttle Position Not Learned

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P1516, P2101, P1516, P2101, P1516, P2101,
TAC Motor Control Closed P1516, P2101, P2176
P2176 P2176 P2176
P1516, P2101, P1516, P2101, P1516, P2101,
TAC Motor Control Open P1516, P2101, P2176
P2176 P2176 P2176

Circuit/System Description

The Engine Control Module (ECM) controls the throttle valve by applying a varying voltage to the control
circuits of the throttle actuator control (TAC) motor. The ECM monitors the duty cycle that is required to
actuate the throttle valve. The ECM monitors the throttle position (TP) sensors 1 and 2 to determine the actual
throttle valve position.

Conditions for Running the DTC

P1516

 DTC P1682 is not set.

 The run/crank or powertrain relay voltage is greater than 6.41 V and reduced power is not active.
 DTC P1516 runs continuously when the above conditions are met.

P2101
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTC P1682 is not set.

 The run/crank or powertrain relay voltage is greater than 5.5 V and reduced power is not active.
 The engine is running or the following conditions are met:
 The engine is not running.

 The ignition voltage is greater than 11 V.

 The TAC system is not in the Battery Saver mode.

 The ECM is commanding the throttle.

 The ECM has learned the minimum throttle position.

 DTC P2101 runs continuously when the above conditions are met.

P2119

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 The ignition is ON.
 DTC P0121, P0122, P0123, P0222, P0223, P0697, P06A3, or P2135 is not set.
 The run/crank or powertrain relay voltage is greater than 6.41 V and reduced power is not active.
 DTC P2119 runs continuously when the above conditions are met.

P2176

 The ignition is ON.

 The run/crank or powertrain relay voltage is greater than 6.41 V and reduced power is not active.
 The ECM enable the minimum throttle learn procedure.
 DTC P2176 run continuously when the above conditions are met.

Conditions for Setting the DTC

P1516

The ECM detects an unstable throttle position for greater than 1 s.

P2101

The ECM detects the actual throttle position does not match the predicted throttle position for greater than 1 s.

P2119

The ECM detects the throttle blade did not return to the default position when the TAC motor is de-energized
for greater than 1 s.

P2176

The ECM detects that both throttle position (TP) sensors were greater than a predetermined voltage during the
minimum throttle learn procedure for greater than 2 s.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Action Taken When the DTC Sets

 DTCs P2101 and P2176 are Type A DTCs.

 DTC P1516 is a Type B DTC.
 DTC P2119 is a Type C DTC.
 The control module commands the TAC system to operate in the Reduced Engine Power mode.
 A message center or an indicator displays Reduced Engine Power.
 Under certain conditions, the control module commands the engine OFF.

Conditions for Clearing the MIL/DTC

 DTCs P2101 and P2176 are Type A DTCs.

 DTC P1516 is a Type B DTC.

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 DTC P2119 is a Type C DTC.

Diagnostic Aids

 Depending on the Start Up ECT, the Desired Throttle Position percentage maybe greater or less than the
Throttle Position with the TAC motor at rest. When the ignition is initially turned ON, or when the engine
is cranking or running the Desired and Actual Throttle positions should closely match.
 Inspect for a condition in which the throttle valve may have been held open. For example, ice may have
formed in the throttle bore causing the throttle valve not to close.
 A high resistance condition on the throttle position and throttle actuator control circuits could cause a
DTC to set.
 A low battery condition may cause a DTC to set.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Throttle Actuator Control (TAC) System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

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NOTE: A low battery voltage or charging system condition may cause a DTC to
set.

2. Verify DTC P0121, P0122, P0123, P0222, P0223, P0562, P0621, P0622, or P2135 is not set.
 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If none of the DTCs are set

3. Verify the scan tool Throttle Body Idle Air flow Compensation parameter is less than 90 %.
 90 % or greater

Refer to Throttle Body Inspection and Cleaning .

 If less than 90 %
4. Clear the DTCs with a scan tool.
5. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power
down.
6. Ignition ON.
7. Verify the scan tool TAC Motor parameter displays Enabled while slowly depressing the accelerator
pedal.
 If Enabled is not displayed

Refer to Circuit/System Testing below.

If Enabled is displayed

8. Verify DTC P1516, P2101, P2119, or P2176 is not set.
 If any of the DTCs are set

Refer to Circuit/System Testing below.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If none of the DTCs are set

NOTE: If there is a condition with the throttle body, the TAC Motor Command
parameter will go to 99 % for a predetermined amount of time and then a
DTC sets. Once a DTC is set, the TAC Motor Command parameter will go
to 0 % and the TAC Motor parameter will display Disabled.

9. Verify the scan tool TAC Motor parameter displays Enabled while performing the Throttle Sweep Test
with a scan tool.
 If Enabled is not displayed

Test or replace the Q38 Throttle Body assembly.

If Enabled is displayed

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10. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
11. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



12. All OK.

Circuit/System Testing

1. Ignition OFF.

WARNING: Turn OFF the ignition before inserting fingers into the throttle bore.
Unexpected movement of the throttle blade could cause personal
injury.

2. Verify the conditions listed below do not exist with the Q38 Throttle Body assembly:

NOTE:  The rest position is defined as the actual Throttle Position

percentage when the ignition is OFF or with the ignition ON for
greater than 30 seconds.
 When the ignition is OFF, spring tension should hold the
throttle plate in the rest position. You should be able to open
the throttle plate to wide open throttle (WOT) or push the
throttle plate to the fully closed position. In each case, the
throttle plate should return to the rest position without
assistance.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 A throttle blade that is not in the rest position

 A throttle blade that is binding open or closed
 A throttle blade that is free to move open or closed without spring pressure
 If a condition is found

Test or replace the Q38 Throttle Body Assembly.

 If a condition is not found

3. Ignition OFF.

NOTE:  Disconnecting the throttle body harness connector may cause

additional DTCs to set.
The Test Lamp must be connected to circuit before turning ignition

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
on or incorrect diagnosis may occur.

4. Disconnect the harness connector at the Q38 Throttle Body assembly.

5. Cycle the Ignition ON and OFF and then ON again.
6. Verify that a test lamp illuminates between each motor control circuit listed below and ground.
 TAC Motor Control Closed circuit terminal A

 TAC Motor Control Open circuit terminal B

 If the test lamp does not illuminate

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the appropriate control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms on the control circuit from end to end.
 If greater than 2 ohms, repair the open or high resistance on the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If the test lamp illuminates

7. Disconnect the harness connector at the K20 Engine Control Module.

8. Test for less than 1 V between each motor control circuit listed below and ground.
 TAC Motor Control Closed circuit terminal A

 TAC Motor Control Open circuit terminal B

 If greater than 1 V

Repair the short to voltage on the circuit.

If less than 1 V

9. Test or replace the Q38 Throttle Body assembly.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Repair Instructions

 Throttle Body Assembly Replacement

 Control Module References for Engine Control Module replacement, programming, and setup

Repair Verification

1. Ignition OFF.
2. Install any components that have been removed or replaced during diagnosis.
3. Perform any adjustments, programming or setup procedures that are required when a component is
removed or replaced.
4. Ignition ON.
5. Clear the DTCs with a scan tool.

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6. Turn the ignition OFF for 60 s.
7. Ignition ON.
8. Verify the scan tool TAC Motor parameter displays Enabled while performing the Throttle Sweep Test
with a scan tool.
 If Enabled is not displayed

Test or replace the Q38 Throttle Body assembly.

 If Enabled is displayed
9. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze
Frame/Failure Records, if applicable, in order to verify the DTC does not set.
 If DTC sets

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If DTC does not set



10. All OK.

DTC P2096

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2096

Post Catalyst Fuel Trim System Low Limit

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Circuit Description

Fuel trim bias is used to keep the post catalyst air/fuel ratio within a predetermined range. This allows optimal
catalyst efficiency under various operating conditions. The engine control module (ECM) constantly monitors
how lean or rich the fuel trim bias is commanded, to determine if the fuel trim bias is greater than a calibrated
amount.

Conditions for Running the DTC

 DTC P0016, P0017, P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0111,
P0112, P0113, P0114, P0116, P0117, P0118, P0128, P0131, P0132, P0133, P0134, P0135, P0137,
P0138, P013A, P013B, P013E, P013F, P0140, P0141, P015A, P015B, P0201, P0202, P0203, P0204,
P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0300, P0301, P0302, P0303, P0304,
P0340, P0341, P0365, P0366, P0411, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496,
P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P219A,

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P2227, P2228, P2229, P2230, P2270, P2271, P2440, or P2444 is not set.
 The barometric pressure (BARO) is greater than 70 kPa (10.2 PSI).
 The mass air flow (MAF) is between 0-100 g/s.
 The manifold absolute pressure (MAP) is between 0-200 kPa (0-29 PSI).
 The intake air temperature (IAT) is between -20°C and +200°C (-4 and +392°F).
 The start up engine coolant temperature is warmer than -20°C (-4°F).
 The fuel control intrusive diagnostics are not active.
 The engine is operating under cruise conditions.
 DTC P2096 runs continuously when the conditions above have been met.

Conditions for Setting the DTC

The lean correction limit for a condition causing a rich air/fuel ratio has been exceeded.

Action Taken when the DTC Sets

 DTCs P2096 is a Type B DTC.

 The ECM records the operating conditions at the time the diagnostic fails. The first time the diagnostic
fails, the ECM stores this information in the Failure records. If the diagnostic reports a failure on the
second ignition cycle, the ECM records the operating conditions at the time of the failure. The ECM
writes the operating conditions to the Freeze Frame and updates the Failure records. The ECM illuminates
the malfunction indicator lamp (MIL) when one of the following occurs:
 The ECM detects the same fuel trim failure during 2 consecutive trips.

 The ECM detects any fuel trim failure during any subsequent trip if the conditions at the time of
failure meet the following criteria:
 The engine load is within 20 percent of the previous test that failed.

 The engine speed is within 375 RPM of the previous test that failed.

 The engine coolant temperature is in the same range of the previous test that failed.

Conditions for Clearing the MIL/DTC

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTCs P2096 is a Type B DTC.

 The ECM turns OFF the malfunction indicator lamp (MIL) at the beginning of the fourth ignition cycle,
after 3 ignition cycles that the diagnostic runs and does not fail.
 A current DTC, Last Test Failed, clears when the diagnostic runs and passes.

Diagnostic Aids

 It is very unlikely that an HO2S will cause this DTC to set without the occurrence of circuit related HO2S
DTCs. Do not replace an HO2S to address this DTC without first performing all the steps in
Circuit/System Verification and Circuit/System Testing.
 The post catalyst fuel trim diagnostic is very sensitive to heated oxygen sensor (HO2S) design. A non-OE
sensor or an incorrect part number may cause a DTC to set.
 Certain aftermarket air filters may cause a DTC to set.

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 Certain aftermarket air induction systems or modifications to the air induction system may cause a DTC
to set.
 Certain aftermarket exhaust system components may cause a DTC to set.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

2. Verify no other HO2S or fuel trim DTC is set.

 If any other HO2S or fuel trim DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If no other HO2S or fuel trim DTC is set

3. Verify DTC P2096 is not set.
 If a DTC is set

Refer to Circuit/System Testing below

If no DTC is set

4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within

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the conditions that you observed in the Freeze Frame/Failure Records data.
5. Verify DTC P2096 is not set.
 If a DTC is set

Refer to Circuit/System Testing below.

If no DTC is set


6. All OK.

Circuit/System Testing

Verify none of the conditions listed below exist:

 Air intake duct collapsed or restricted.

 Air filter dirty or restricted.
 Objects blocking the throttle body.
 Excessive fuel in the crankcase. Change engine oil as necessary.
 Rich fuel injectors. Refer to Fuel Injector Diagnosis.
 Excessive fuel system pressure. Refer to Fuel System Diagnosis.
 Fuel contamination. Refer to Alcohol/Contaminants-in-Fuel Diagnosis.
 Fuel saturation of the evaporative emissions (EVAP) canister
 Stuck open or leaking EVAP purge valve
 Restricted exhaust. Refer to Symptoms - Engine Exhaust .
 Improper operation of the crankcase ventilation system.

 If a condition is found

Repair as necessary.

Repair Instructions
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

DTC P2097

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2097

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Post Catalyst Fuel Trim System High Limit

Circuit Description

Fuel trim bias is used to keep the post catalyst air/fuel ratio within a predetermined range. This allows optimal
catalyst efficiency under various operating conditions. The engine control module (ECM) constantly monitors
how lean or rich the fuel trim bias is commanded, to determine if the fuel trim bias is greater than a calibrated
amount.

Conditions for Running the DTC

 DTC P0016, P0017, P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0111,
P0112, P0113, P0114, P0116, P0117, P0118, P0128, P0131, P0132, P0133, P0134, P0135, P0137,
P0138, P013A, P013B, P013E, P013F, P0140, P0141, P015A, P015B, P0201, P0202, P0203, P0204,
P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0300, P0301, P0302, P0303, P0304,
P0340, P0341, P0365, P0366, P0411, P0442, P0443, P0446, P0449, P0452, P0453, P0455, P0496,
P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P219A,
P2227, P2228, P2229, P2230, P2270, P2271, P2440, or P2444 is not set.
 The barometric pressure (BARO) is greater than 70 kPa (10.2 PSI).
 The mass air flow (MAF) is between 0-100 g/s.
 The manifold absolute pressure (MAP) is between 0-200 kPa (0-29 PSI).
 The intake air temperature (IAT) is between -20°C and +200°C (-4 and +392°F).
 The start up engine coolant temperature is warmer than -20°C (-4°F).
 The fuel control intrusive diagnostics are not active.
 The engine is operating under cruise conditions.
 DTC P2097 runs continuously when the conditions above have been met.

Conditions for Setting the DTC

The rich correction limit for a condition causing a lean air/fuel ratio has been exceeded.
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Action Taken when the DTC Sets

 DTCs P2097 is a Type B DTC.

 The ECM records the operating conditions at the time the diagnostic fails. The first time the diagnostic
fails, the ECM stores this information in the Failure records. If the diagnostic reports a failure on the
second ignition cycle, the ECM records the operating conditions at the time of the failure. The ECM
writes the operating conditions to the Freeze Frame and updates the Failure records. The ECM illuminates
the malfunction indicator lamp (MIL) when one of the following occurs:
 The ECM detects the same fuel trim failure during 2 consecutive trips.

 The ECM detects any fuel trim failure during any subsequent trip if the conditions at the time of
failure meet the following criteria:
 The engine load is within 20 percent of the previous test that failed.

 The engine speed is within 375 RPM of the previous test that failed.

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 The engine coolant temperature is in the same range of the previous test that failed.

Conditions for Clearing the MIL/DTC

 DTCs P2097 is a Type B DTC.

 The ECM turns OFF the malfunction indicator lamp (MIL) at the beginning of the fourth ignition cycle,
after 3 ignition cycles that the diagnostic runs and does not fail.
 A current DTC, Last Test Failed, clears when the diagnostic runs and passes.

Diagnostic Aids

 It is very unlikely that an HO2S will cause this DTC to set without the occurrence of circuit related HO2S
DTCs. Do not replace an HO2S to address this DTC without first performing all the steps in
Circuit/System Verification and Circuit/System Testing.
 The post catalyst fuel trim diagnostic is very sensitive to heated oxygen sensor (HO2S) design. A non-OE
sensor or an incorrect part number may cause a DTC to set.
 Certain aftermarket air filters may cause a DTC to set.
 Certain aftermarket air induction systems or modifications to the air induction system may cause a DTC
to set.
 Certain aftermarket exhaust system components may cause a DTC to set.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

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Circuit/System Verification

1. Ignition ON.
2. Verify no other HO2S or fuel trim DTC is set.
 If any other HO2S or fuel trim DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If no other HO2S or fuel trim DTC is set

3. Verify DTC P2097 is not set.
 If a DTC is set

Refer to Circuit/System Testing below

If no DTC is set

4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed in the Freeze Frame/Failure Records data.
5. Verify DTC P2097 is not set.
 If a DTC is set

Refer to Circuit/System Testing below

If no DTC is set


6. All OK.

Circuit/System Testing

Verify none of the conditions listed below exist:

 Exhaust system leaks. Refer to Symptoms - Engine Exhaust .

 Vacuum hoses for splits, kinks, and proper connections
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 Insufficient fuel in the tank

 Air induction system and air intake ducts for leaks
 Missing air filter element
 Cracked evaporative canister
 Evaporative pipes plugged, obstructed, or leaking
 Crankcase ventilation system leaking.
 Engine vacuum leaks
 Low fuel system pressure. Refer to Fuel System Diagnosis.
 Contaminated fuel. Refer to Alcohol/Contaminants-in-Fuel Diagnosis.
 Lean fuel injectors. Refer to Fuel Injector Diagnosis.

 If a condition is found

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Repair as necessary.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

DTC P2122, P2123, P2127, P2128, OR P2138

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P2122

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P2123

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P2127

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P2128

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P2138

Accelerator Pedal Position (APP) Sensors 1-2 Not Plausible

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
APP Sensor 1 5V
P2122 P2122 P2123 -
Reference
APP Sensor 1 Signal P2122 P2122 P2123 P2138
APP Sensor 1 Low
- P2123 - -
Reference
APP Sensor 2 5V

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P2127 P2127 P2128 -
Reference
APP Sensor 2 Signal P2127 P2127 P2128 P2138
APP Sensor 2 Low
- P2128 - -
Reference

Typical Scan Tool Data

APP Sensor 1
Circuit Short to Ground Open Short to Voltage
Operating Conditions: The engine is operating at idle
Parameter Normal Range: 0.13-4.88 V
APP Sensor 1 5V Reference 0V 0V 5V
APP Sensor 1 Signal 0V 0V 5V
APP Sensor 1 Low Reference - 4.96 V -

APP Sensor 2
Circuit Short to Ground Open Short to Voltage
Operating Conditions: The engine is operating at idle
Parameter Normal Range: 0.12-2.64 V
APP Sensor 2 5V Reference 0V 0V 5V
APP Sensor 2 Signal 0V 0V 5V
APP Sensor 2 Low Reference - 4.92 V -

Circuit/System Description

The throttle actuator control (TAC) system uses two accelerator pedal position (APP) sensors to monitor the
accelerator pedal position. The APP sensors 1 and 2 are located within the pedal assembly. Each sensor has a 5
V reference circuit, a low reference circuit, and a signal circuit.

Two processors are also used to monitor the TAC motor system data. Both processors are located within the
ECM. Each signal circuit provides both processors with a signal voltage proportional to pedal movement. The
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processors share and monitor data to verify that the indicated APP sensor calculation is correct.

Conditions for Running the DTC

P2122 and P2123

 DTC P0642, or P0643 is not set.

 The ignition is ON.
 The DTCs run continuously when the above conditions are met.

P2127 and P2128

 DTC P0652, or P0653 is not set.

 The ignition is ON.

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 The DTCs run continuously when the above conditions are met.

P2138

 DTCs P0642, P0643, P0652, or P0653 is not set.

 The ignition is ON.
 The DTC runs continuously when the above conditions are met.

Conditions for Setting the DTC

P2122

The ECM detects that APP sensor 1 voltage is less than 0.61 V for greater than 0.5 s.

P2123

The ECM detects that APP sensor 1 voltage is greater than 4.59 V for greater than 0.5 s.

P2127

The ECM detects that APP sensor 2 voltage is less than 0.10 V for greater than 0.5 s.

P2128

The ECM detects that APP sensor 2 voltage is greater than 2.5 V for greater than 0.5 s.

P2138

The ECM detects that the difference between APP sensor 1 and APP sensor 2 exceeds a predetermined value
for greater than 2 s.

Action Taken When the DTC Sets

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 DTCs P2122, P2123, P2127, P2128 and P2138 are Type A DTCs.
 The ECM commands the TAC motor system to operate in reduced engine power mode.

Conditions for Clearing the DTC

DTCs P2122, P2123, P2127, P2128, and P2138 are Type A DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

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COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Throttle Actuator Control (TAC) System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM).

 If none of the DTCs are set

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3. Verify the scan tool APP Sensor 1 parameter. The reading should be between 0.32-4.87 V, and change
with the accelerator pedal input.
4. Verify the scan tool APP Sensor 2 parameter. The reading should be between 0.16-2.30 V, and change
with the accelerator pedal input.
 If the reading does not change

Refer to Circuit/System Testing below.

If the reading does change

5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
6. Verify the DTC does not set.
 If the DTC sets

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Refer to Circuit/System Testing below.

If the DTC does not set



7. All OK.

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B107 Accelerator
Pedal Position Sensor. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 5 ohms between each low reference circuit terminal listed below and ground.
 Low reference circuit terminal 4

 Low reference circuit terminal 5

 If 5 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 5 ohms

3. Ignition ON.
4. Test for 4.8-5.2 V between each 5 V reference circuit terminal listed below and ground.
 5 V reference circuit terminal 1

 5 V reference circuit terminal 2

 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance
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3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Verify the scan tool APP sensor 1 and 2 voltage parameter is less than 0.1 V.
 If 0.1 V or greater

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1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit terminal listed below and ground.
 APP sensor 1 signal circuit terminal 3

 APP sensor 2 signal circuit terminal 6

 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If less than 0.1 V

6. Install a 3 A fused jumper wire between each signal circuit terminal listed below and the 5 V reference
circuit terminal 1.
 APP sensor 1 signal circuit terminal 3

 APP sensor 2 signal circuit terminal 6

7. Verify the scan tool APP sensor 1 and 2 voltage parameter is greater than 4.8 V.
 If 4.8 V or less

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 4.8 V

8. Test or replace the B107 Accelerator Pedal Position Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Accelerator Pedal Position Sensor Replacement

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Control Module References for ECM replacement, programming, and setup.

DTC P2199

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2199

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Intake Air Temperature (IAT) Sensors 1-2 Not Plausible

Diagnostic Fault Information

IAT Sensor 1
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P0112, P0114,P0113, P0114, P0113, P0114,
Sensor P0111, P0114
P2199 P2199 P2199*
P0097, P0113,
Low Reference - P11C2**, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
**Where used.

IAT Sensor 2
Short to Open/High Short to
Circuit Ground Resistance Voltage Signal Performance
P0097, P0651, P0097, P0651,
P0096, P0097,
P11C2**, P11C2**,
5 V Reference P11C2**, P2199, -
P2199, P2227, P2199, P2227,
P2227, P2228
P2228 P2228
P0097,
P0097, P0097, P11C2**,
Sensor P11C2**, -
P11C3**, P2199 P2199
P2199*
P0097, P0113,
Low Reference - P11C2**, P2227, * -
P2229
*Internal ECM or sensor damage may occur if the circuit is shorted to B+.
**Where used.

Typical Scan Tool Data

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

IAT Sensor 1
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature
Sensor 150°C (302°F) -40°C (-40°F) -40°C (-40°F)*
Low Reference - -40°C (-40°F) -40°C (-40°F)*
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

IAT Sensor 2
Circuit Short to Ground Open or High Resistance Short to Voltage
Operating Conditions: Engine Running
Parameter Normal Range: Varies with ambient temperature
-40°C (-40°F) -40°C (-40°F)
5 V Reference -

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10 Hz 10 Hz
-40°C (-40°F)*
Signal -40°C (-40°F) -40°C (-40°F)
10 Hz*
-40°C (-40°F)
Ground - -
10 Hz
*Internal ECM or sensor damage may occur if the circuit is shorted to B+

Circuit/System Description

The sensors listed below are integrated within the multifunction intake air sensor:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 MAF sensor
 BARO pressure sensor

The intake air temperature (IAT) sensor 1 is a variable resistor that changes the voltage on the engine control
module (ECM) supplied 5 V signal circuit. The signal varies with inlet air temperature in the sensor bore and is
displayed by the scan tool as °C (°F). The IAT sensor 2 and the humidity sensor share the same circuit. The IAT
sensor 2 signal is displayed by the scan tool as Hz (Hertz) and °C (°F).

The IAT sensor 1 produces an analog signal on pin-8 of the sensor. The IAT sensor 2 produces a frequency
modulated signal on pin-1 of the sensor.

The sensors listed below share an ECM supplied 5 V reference circuit:

 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor
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The sensors listed below share an ECM supplied low reference circuit:

 IAT sensor 1
 IAT sensor 2
 Humidity sensor
 Barometric pressure (BARO) sensor

IAT Sensor 1 - Temperature, Resistance, Voltage Table

IAT Sensor 1 IAT Sensor 1 Resistance IAT Sensor 1 Signal Voltage
Cold High High
Warm Low Low

IAT Sensor 2 - Temperature, Frequency Table

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IAT Sensor 2 IAT Sensor 2 Frequency IAT Sensor 2 Temperature
Cold 45 Hz -40°C (-40°F)
Warm 302 Hz 104°C (219°F)

Conditions for Running the DTC

 DTC P1682 is not set.

 The ignition is ON.
 Ignition voltage is at least 11 V.
 This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

The ECM detects that the absolute difference between the IAT sensor 1 and the IAT sensor 2 temperatures is
greater than 55°C (99°F) for longer than 5 s.

Action Taken When the DTC Sets

DTC P2199 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P2199 is a Type B DTC.

Diagnostic Aids

 With the ignition ON, when the engine is OFF and is cold; properly functioning IAT sensors 1 and 2 will
gradually increase the scan tool IAT Sensor 1 and 2 parameters. This is due to the heat that is generated
by the multifunction intake air sensor internal heating elements.
 The Humidity sensor and the IAT sensor 2 signals are sent to the ECM on the same circuit. If the IAT
Sensor 2 parameter displays the values: 10 Hz; -40°C (-40°F), and there are also Humidity Sensor DTCs,
check for a circuit problem.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs

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 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

EL-38522-A Variable Signal Generator

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

1. Ignition ON.
2. Verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
 If any of the DTCs are set

Refer to DTC P0641, P0651, P0697, or P06A3 (ECM) for further diagnosis.

 If none of the DTCs are set

NOTE: To minimize the effects of residual engine heat and sensor internal heating
elements, perform Steps 3 and 4 of this verification procedure only if the
ignition has been OFF for 8 hours or more.

3. Ignition ON.
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4. Verify the following scan tool parameters are within 25°C (45°F) of each other.
 Start-Up IAT Sensor 1

 IAT Sensor 2

 IAT Sensor 3; where equipped

 If not within 25°C (45°F)

Refer to Circuit/System Testing below.

If within 25°C (45°F)



5. Engine idling, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
 IAT Sensor 1

 IAT Sensor 2

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 If not between: -38 and +149°C (-36 and +300°F)

Refer to Circuit System Testing below.

If between: -38 and +149°C (-36 and +300°F)

6. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within
the conditions that you observed from the freeze frame/failure records data.
7. Verify the DTC does not set.
 If the DTC does set

Refer to Circuit/System Testing below.

If the DTC does not set



8. All OK

Circuit/System Testing

NOTE: You must perform the Circuit/System Verification before proceeding with
Circuit/System Testing.

1. Ignition OFF, and all vehicle systems OFF, it may take up to 2 min. for all vehicle systems to power
down. Disconnect the harness connector at the B75C Multifunction Intake Air sensor.
2. Test for less than 2 ohms between the low reference circuit terminal 7 and ground.
 If 2 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open or high resistance in the circuit.

 If less than 2 ohms replace the K20 Engine Control Module.

 If less than 2 ohms

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the 5 V reference circuit is shorted to a voltage the engine control

module or the sensor may be damaged.

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1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

4. Ignition ON, test for 4.8-5.2 V between the signal circuit terminal 8 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

5. Ignition ON, verify the scan tool IAT Sensor 1 parameter is colder than -39°C (-38°F).
 If warmer than -39°C (-38°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit terminal 8 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If colder than -39°C (-38°F).

6. Ignition OFF, install a 3 A fused jumper wire between the signal circuit terminal 8 and the low reference
circuit terminal 7.
7. Verify the scan tool IAT Sensor 3 parameter is warmer than 150°C (302°F).
 If colder than 150°C (302°F).

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1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If warmer than 150°C (302°F).

8. Ignition ON, test for 4.8-5.2 V between the signal terminal 1 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the signal circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

NOTE: If the signal circuit is shorted to a voltage the engine control module
or the sensor may be damaged.

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Ignition ON, test for less than 1 V between the signal circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

9. Determine if EL-38522-A Variable Signal Generator or equivalent is available.

 EL-38522-A, Variable Signal Generator; or equivalent is not available

1. Replace the K20 Engine Control Module.

2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle
within the conditions that you observed from the freeze frame/failure records data.
3. Verify the DTC does not set.
 If the DTC sets

Refer to step 13.

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 If no DTCs set
4. All OK.
 EL-38522-A, Variable Signal Generator; or equivalent is available

10. Ignition OFF, connect the leads of the EL-38522-A Variable Signal Generator as follows:
 Red lead to the signal circuit terminal 1 at the harness connector

 Black leads to ground

 Battery voltage supply lead to B+

11. Set the EL-38522-A Variable Signal Generator to the following specifications.
 Signal switch to 5 V

 Duty Cycle switch to 50 % (Normal)

 Frequency switch to 30 Hz

12. Ignition ON, verify the scan tool IAT Sensor 2 parameter is between 28-32 Hz.
 If not between 28-32 Hz

Replace the K20 Engine Control Module.

 If between 28-32 Hz
13. Test or replace the B75C Multifunction Intake Air sensor.

Component Testing

Multifunction Intake Air Sensor

1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.

NOTE: A thermometer can be used to test the sensor off the vehicle.

2. Test the IAT sensor 1 by varying the sensor temperature while monitoring the sensor resistance. Compare
the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch
Sensor) , Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor) table for
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Bosch Sensors. The resistance values should be in range of the table values.
 If not within the specified range.

Replace the B75C Multifunction Intake Air sensor.

If within the specified range.



3. All OK

Multifunction Intake Air Sensor

1. Test the IAT Sensor 2 by varying the sensor temperature while monitoring the air temperature with a
thermometer. Compare the readings with the scan tool IAT Sensor 2 parameter. The values should be
within 5%.
 If not within 5%.

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Replace the B75C Multifunction Intake Air sensor.

If within 5%.


2. All OK

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement
 Control Module References for Engine Control Module replacement, programming, and setup.

DTC P219A

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P219A

Fuel Trim Cylinder Balance

Circuit/System Description

The Air Fuel Imbalance diagnostic detects a rich or lean cylinder to cylinder air/fuel ratio imbalance. The
diagnostic monitors the pre-catalyst heated oxygen sensor (HO2S) signal's frequency and amplitude
characteristics by calculating an accumulated voltage over a predetermined sample period. An imbalance is
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

indicated when multiple samples of the accumulated voltage are consistently higher than the desired value.

Conditions for Running the DTC

 DTCs P0016, P0017, P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0122,
P0123, P0128, P0201-P0204, P0222, P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271,
P0300, P0301-P0304, P0340, P0341, P0365, P0366, P0411, P0442, P0455, P0496, P1248, P1249,
P124A, P124B, P2101, P2135, P2147, P2148, P2150. P2151, P2153, P2154, P2156, P2157, P2440,
P2444 are not set.
 The EVAP device control and intrusive diagnostics are not active.
 The engine overspeed protection is not active.
 The engine is in closed loop status.
 The system voltage is greater than 11 V.

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 The engine coolant temperature (ECT) is warmer than -20°C (-4°F).
 The engine speed is between 1, 200-3, 200 RPM.
 The mass air flow is between 10-100 g/s.
 The AIR pump is not ON.
 Engine run time is greater than 30 s.
 Fuel level is greater than 10% and no fuel level sensor fault is present.
 The DTC runs continuously when the above conditions have been met.

Conditions for Setting the DTC

Multiple samples of the pre-catalyst HO2S accumulated voltage are consistently greater than the desired value.

Action Taken When the DTC Sets

DTC P219A is a Type A DTC.

Conditions for Clearing the MIL/DTC

DTC P219A is a Type A DTC.

Diagnostic Aids

 The air fuel imbalance diagnostic is very sensitive to heated oxygen sensor (HO2S) design. A non-OE
sensor or an incorrect part number may cause a DTC to set.
 Monitoring the misfire current counters, or misfire graph, may help to isolate the cylinder that is causing
the condition.
 Certain aftermarket air filters may cause a DTC to set.
 Certain aftermarket air induction systems or modifications to the air induction system may cause a DTC
to set.
 Certain aftermarket exhaust system components may cause a DTC to set.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Troubleshooting with a Test Lamp

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 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs
 Connector Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify no other DTCs are set.
 If any other DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

If no other DTCs are set

3. Verify DTC P219A is not set.
 If a DTC is set

Refer to Circuit/System Testing below.

If no DTC is set

4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed in the Freeze Frame/Failure Records data.
5. Verify DTC P219A is not set.
 If a DTC is set
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to Circuit/System Testing below.

If no DTC is set


6. All OK.

Circuit/System Testing

1. Engine idling, verify the manifold absolute pressure (MAP) sensor parameter is between 20-48 kPa.
 If not within the specified range .

Refer to DTC P0106 , or DTC P0107 or P0108

 If within the specified range, verify that none of the conditions listed below exist:
 Modified, damaged, leaking, or restricted air induction system components.

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 Improper operation of the crankcase ventilation system.
 Split, kinked, or improperly connected vacuum hoses.
 Restricted, damaged, leaking, or modified exhaust system from the catalytic converter forward.
Refer to Symptoms - Engine Exhaust .
 Improperly operating fuel injectors. Refer to Fuel Injector Diagnosis.
 Contaminated fuel. Refer to Alcohol/Contaminants-in-Fuel Diagnosis.
 Excessive fuel in the crankcase due to leaking injectors. Change engine oil as necessary.
 Improper ignition system operation. Refer to Electronic Ignition System Diagnosis.
 If a condition is found

Repair as necessary.

If no condition is found

2. Test the engine for any mechanical conditions such as sticking valves, lifters, etc., which could alter the
flow into the combustion chamber. Refer to Symptoms - Engine Mechanical .

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

DTC P2227-P2230

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P2227

Barometric Pressure (BARO) Sensor Performance

DTC P2228

Barometric Pressure (BARO) Sensor Circuit Low Voltage

DTC P2229

Barometric Pressure (BARO) Sensor Circuit High Voltage

DTC P2230

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Barometric Pressure (BARO) Sensor Circuit Erratic - (If used)

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
5V Reference P0641, P2228 P2228 P0641, P2229 P2227
Signal P2228 P2228 P2229 P2227
Low Reference - P2229 - P2227

Typical Scan Tool Data

BARO
Circuit Short to Ground Open Short to Voltage
Operating Conditions: Ignition ON, Engine OFF
Parameter Normal Range: 56-105 kPa, varies with altitude
5V Reference 0 kPa 0 kPa 127 kPa
Signal 0 kPa 0 kPa 127 kPa
Low Reference - 127 kPa -

Circuit/System Description

The barometric pressure (BARO) sensor responds to changes in altitude and atmospheric conditions. This gives
the engine control module (ECM) an indication of barometric pressure. The ECM uses this information to
calculate fuel delivery. The BARO sensor provides a voltage signal to the ECM relative to the atmospheric
pressure changes. The ECM monitors the BARO sensor signal for a voltage outside of the normal range.

Conditions for Running the DTC

P2227

 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122,
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

P0123, P0222, P0223, P1516, P2135, P2228 and P2229 are not set.
 Engine is running.

OR

 DTCs P0106, P0107, P0108, P2228, P2229 and P2230 are not set and are not pending.
 Ignition ON, engine OFF.
 DTC P2227 runs continuously when the above conditions are met.

P2228 or P2229

 The engine is running.

 The DTCs run continuously when the above condition is met.

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P2230

 The engine is running.

 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122,
P0123, P0222, P0223, P1516, P2135, P2228 and P2229 are not set.
 DTC P2230 runs continuously when the above conditions are met.

Conditions for Setting the DTC

P2227

 Engine running, the ECM detects that the difference between the BARO signal and the calculated BARO
is greater than 15 kPa (2.17 PSI) when the vehicle has traveled no more than 0.1 km (0.06 mi) since the
last calculated BARO update, or if the difference is greater than 25 kPa (3.62 PSI) when the vehicle has
traveled greater than 0.1 km (0.06 mi) since the last calculated BARO update.
 Ignition ON, engine OFF, the ECM detects that the BARO pressure is less than 50 kPa (7.25 PSI) or
greater than 115 kPa (16.76 PSI).

P2228

The ECM detects that the BARO sensor voltage is less than 2 V.

P2229

The ECM detects that the BARO sensor voltage is greater than 4.5 V.

P2230

The ECM detects that the difference between the current BARO sensor reading and the previous BARO sensor
reading is greater than 10 kPa (1.45 PSI).

Action Taken When the DTC Sets

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTCs P2227, P2228, P2229, and P2230 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P2227, P2228, P2229, and P2230 are Type B DTCs.

Diagnostic Aids

Inspect the inlet port on the Barometric Pressure Sensor for moisture or debris and attempt to dry or clean the
inlet, if contaminated.

Reference Information

Schematic Reference

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Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify the scan tool BARO pressure parameter is within the range specified in the Altitude Versus
Barometric Pressure table.
 If the BARO is not within the specified range

Refer to Circuit/System Testing below.

 If the BARO is within the specified range

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed in the Freeze Frame/Failure Records data.
4. Verify the DTC does not set.
 If the DTC sets

Refer to Circuit/System Testing below.

If the DTC does not set



5. All OK.

Circuit/System Testing

1. Verify the conditions listed below do not exist with the B75C Multifunction Intake Air Sensor:

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 Damage

 Restrictions in the inlet port

 If a condition exists

Repair or replace the B75C Multifunction Intake Air Sensor as necessary.

 If none of the conditions exist

2. Ignition OFF, and all vehicle systems OFF, it may take up to 2 minutes for all vehicle systems to power
down. Disconnect the harness connector at the B75C Multifunction Intake Air Sensor.
3. Test for less than 5 ohms between the low reference circuit terminal 7 and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If greater than the specified value, repair the open or high resistance in the circuit.

 If 2 ohms or less replace the K20 Engine Control Module.

 If less than 5 ohms

4. Ignition ON.
5. Test for 4.8-5.2 V between the 5 V reference circuit terminal 2 and ground.
 If less than 4.8 V

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for infinite resistance between the 5 V reference circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the 5 V reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 5.2 V

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the 5 V reference circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

 If between 4.8-5.2 V

6. Verify the scan tool BARO Sensor parameter is less than 0.2 V.
 If 0.2 V or greater

1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit terminal 6 and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K20 Engine Control Module.

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 If less than 0.2 V

7. Install a 3 A fused jumper wire between the signal circuit terminal 6 and the 5 V reference circuit terminal
2.
8. Verify the scan tool BARO Sensor parameter is greater than 4.5 V.
 If 4.5 V or less

1. Ignition OFF, remove the jumper wire, disconnect the harness connector at the K20 Engine Control
Module.
2. Test for infinite resistance between the signal circuit terminal 6 and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the signal circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If greater than 4.5 V

9. Test or replace the B75C Multifunction Intake Air Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Mass Airflow Sensor Replacement for multifunction intake air sensor replacement
 Control Module References for engine control module replacement, programming and setup

DTC P2261

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC Descriptor

DTC P2261

Turbocharger Bypass Valve Stuck

Circuit/System Description

The turbocharger incorporates a bypass valve which is controlled by the Engine Control Module (ECM), by
utilizing a remotely mounted solenoid valve, to prevent turbocharger surging and damage from vibrations by
opening during abrupt closed throttle conditions. When the valve is open during closed throttle deceleration
conditions, it allows the air to recirculate in the turbocharger and maintain turbocharger speed. Within a
calibrated range during the closed throttle event, or upon a wide open throttle command the valve will then
close to optimize turbo response. The bypass solenoid valve has the following circuits:

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 Ignition voltage
 Turbocharger bypass solenoid valve control

As engine load and engine speed increases, the turbocharger bypass solenoid valve remains commanded ON by
the ECM. As soon as the throttle closes the turbocharger bypass solenoid valve is commanded OFF by the
ECM, in order to allow the turbocharger bypass valve to open and allow the turbocharger air to recirculate,
there by preventing turbocharger surging.

Conditions for Running the DTC

 DTCs P0033, P0034, P0035, P0097, P0098, P0100, P0101, P0102, P0103, P0121, P0122, P0123, P0221,
P0222, P0223, P0234, P0237, P0238, P0299, P2228, or P2229, are not set.
 The boost pressure versus the barometric pressure (BARO) ratio is between 1.1-3.3.
 The charge air bypass valve has been commanded ON for greater than 1 s immediately after an abrupt
closed throttle has occurred and the resulting pressure ratio across the compressor exceeds the calibrated
pressure ratio limit.
 The engine speed is greater than 1, 800 RPM.
 This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

The ECM has detected a series of pulsations in the induction system that exceed a calibrated threshold.

Action Taken When the DTC Sets

DTC P2261 is a Type B DTC.

Conditions for Clearing the DTC

DTC P2261 is a Type B DTC.

Reference Information
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Turbocharger System Description

Electrical Information Reference

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 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.
2. Verify DTC P0033, P0034, or P0035 is not set.
 If any of the DTCs are set

Refer to DTC P0033-P0035 .

If none of the DTCs are set

3. Verify the scan tool BARO Sensor parameter is within the range specified in the Altitude Versus
Barometric Pressure table for the current testing altitude.
 If the parameter is not within the range specified in the table

Refer to DTC P2227-P2230.

If the parameter is within the range specified in the table

4. Verify the scan tool Boost Pressure Sensor and BARO Sensor parameters are within 3 kPa (0.4 psi).
 If the parameters are not within 3 kPa (0.4 psi)
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Refer to DTC P0236 .

If the parameters are within 3 kPa (0.4 psi)

5. Verify a click is heard or felt from the Q40 Turbocharger Bypass Solenoid Valve when commanding the
Turbocharger Bypass Solenoid Valve ON and OFF with a scan tool.
 If a click is not heard or felt

Refer to Circuit/System Testing below.

If a click is heard or felt

6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
7. Verify a DTC does not set.

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 If a DTC sets

Refer to Circuit/System Testing below.

If a DTC does not set



8. All OK

Circuit/System Testing

1. Verify the conditions listed below do not exist:

 Vacuum leaks

 Vacuum line restrictions

 Improper routing or connecting of the vacuum hoses on the Q40 Turbocharger Bypass Solenoid
Valve, the bypass valve, and the bypass valve vacuum reservoir
 If a condition exists

Repair or replace the component as necessary.

If none of the conditions exist



2. Disconnect the Q40 Turbocharger Bypass Solenoid Valve vacuum supply hose at the intake manifold.
3. Connect the GE 23738-A to the manifold.

NOTE: Allow engine idle to stabilize before continuing.

4. Engine Idling, verify the vacuum gauge displays between 45-67 kPa (13-20 inches Hg) of vacuum.
 If not within the specified range

Repair the vacuum source.

 If within the specified range

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

NOTE: The vacuum reservoir (tank) is integral to intake manifold and is located at
the bottom of the manifold.

5. Ignition OFF, disconnect the vacuum hose at the turbocharger vacuum reservoir.
6. Connect the GE 23738-A to the vacuum reservoir and apply 34 kPa (10 inches Hg) of vacuum.
7. Verify the reservoir holds vacuum for at least 10 s.
 If the vacuum is not held for at least 10 s

Replace the intake manifold

If the vacuum is held for at least 10 s



8. Connect the vacuum hose to the reservoir.

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NOTE: Disconnect the Q40 Turbocharger Bypass Solenoid Valve vacuum supply
hose at the intake manifold if not still disconnected from step 2.

9. Disconnect the vacuum hose at the turbocharger bypass valve and connect the GE 23738-A to the hose.
10. Engine idling, command the Turbocharger Bypass Solenoid Valve ON and OFF with a scan tool.
11. Verify the vacuum toggles between 0 kPa (0 inches Hg) to greater than 45 kPa (13 inches Hg).
 If not within the specified range

Replace the Q40 turbocharger bypass solenoid valve

If within the specified range

12. Connect any hoses that were disconnected during previous steps.
13. Verify damage to the turbocharger bypass valve assembly does not exist. Refer to Turbocharger
Cleaning and Inspection .
 If the turbocharger bypass valve assembly is damaged

Repair or replace the turbocharger bypass valve assembly as necessary.

If the turbocharger bypass valve assembly is not damaged



14. Replace the turbocharger.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Charge Air Bypass Regulator Solenoid Valve Replacement for turbocharger bypass solenoid valve
replacement
 Intake Manifold Replacement
 Turbocharger Replacement
 Control Module References for ECM replacement, programming and setup
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

DTC P2534 (FUEL PUMP CONTROL MODULE)

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2534

Ignition On/Start Switch Circuit Low Voltage

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Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance
Ignition P2534 P2534 - -

Circuit/System Description

The fuel pump control module monitors the ignition voltage circuit in order to determine if the voltage is within
the normal operating range.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

The fuel pump control module detects that the ignition voltage is less than 6.0 V.

Action Taken When the DTC Sets

DTC P2534 is a Type A DTC.

Conditions for Clearing the DTC

DTC P2534 is a Type A DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

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DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

1. Ignition ON.
2. Verify DTC P0562 is not set.
 If the DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

 If the DTC is not set

3. Ignition OFF, disconnect the harness connector at the K27 fuel pump control module, ignition ON.
4. Verify a test lamp illuminates between the ignition circuit terminal 21 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF.
2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF.
2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If infinite resistance, replace the K27 fuel pump control module.



 If the test lamp illuminates

5. Replace the K27 fuel pump control module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for fuel pump control module replacement, programming and setup.

DTC P2544

Diagnostic Instructions

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 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for a overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P2544

Transmission Torque Request Signal Message Counter Incorrect

Circuit/System Description

To improve shift feel, the transmission control module (TCM) is constantly sending the engine control module
(ECM) serial data messages with information regarding it's request for modifying engine speed or torque. The
serial data messages are sent through two circuits which are part of a communication network called the
controller area network (CAN). The ECM sets DTC P2544 when it detects a discrepancy in the structure of the
message causing the integrity of the message to be questioned.

An intermittent fault in the CAN circuits will cause the ECM to set DTC P2544.

Conditions for Running the DTC

 The engine run time is greater than 0.5 s.

 No other CAN errors are present.

Conditions for Setting the DTC

The ECM detects that the engine speed and torque modification messages from the TCM are either corrupted or
intermittently missing for greater than 4 s.

Action Taken When the DTC Sets

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 DTC P2544 is a Type B DTC.

 The TCM commands maximum line pressure during shifts, which results in harsh shifts.
 The TCM freezes adaptive functions.

Conditions for Clearing the DTC

DTC P2544 is a Type B DTC.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

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Circuit/System Verification

NOTE:  DTC P2544 is an informational DTC.

 Diagnose all other engine control module DTCs prior to DTC P2544.

1. Verify there are no other engine control module or communication DTCs set.
 If a DTC is set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle

If a DTC is not set



2. Complete the diagnosis by looking for an intermittent CAN circuit fault. Refer to Scan Tool Does Not
Communicate with High Speed GMLAN Device .
 If an intermittent CAN circuit fault is found

Repair as necessary.

If an intermittent CAN circuit fault is not found



3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for TCM replacement, setup, and programming.

DTC P2635 (FUEL PUMP CONTROL MODULE)

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
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 Review Strategy Based Diagnosis for an overview of the diagnostic approach.

 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2635

Fuel Pump Flow Performance

Diagnostic Fault Information

Short to Open/High Short to Signal

Circuit Ground Resistance Voltage Performance
Control P0231 P023F P0232 P023F, P2635

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Low Reference - P023F - P023F, P2635

Circuit/System Description

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that
the ignition is on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds,
unless the engine is in crank or run. While this voltage is being received, the fuel pump control module closes
the ground switch of the fuel pump and also supplies a varying voltage to the fuel tank pump module in order to
maintain the desired fuel line pressure.

Conditions for Running the DTC

 DTC P018B, P018C, P018D, P0231, P0232, P023F, P064A, P1255 or P06A6 are not active.
 DTC P0641 has not failed this ignition cycle.
 Fuel pump control is enabled and the fuel pump control state is normal.
 The system voltage is greater than 11 V.
 The engine has been running for more than 30 seconds.
 Low fuel level warning not present.

Conditions for Setting the DTC

This DTC sets when the fuel pump control module detects a predetermined fuel pressure performance
degradation between the desired fuel pressure and the current fuel pressure.

Action Taken When the DTC Sets

DTC P2635 is a Type B DTC.

Conditions for Clearing the DTC

DTC P2635 is a Type B DTC.

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Diagnostic Aids

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the
information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and
Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

On vehicles equipped with a high pressure mechanical pump on Direct Fuel Injection engines, the vehicle may
continue to run even though the pump in the fuel tank is not operating.

Reference Information

Schematic Reference

Engine Controls Schematics

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Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

NOTE: Do not replace the fuel pump control module based on a history DTC P2635.
The DTC P2635 may be stored but that does not indicate a failure of the fuel
pump control module. Refer to Strategy Based Diagnosis for further history
DTC diagnostics.

1. Ignition ON.
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2. Verify DTCs P018B, P018C, P018D, P0231, P0232 or P023F are not set.
 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

If none of the DTCs are set

3. Verify the proper fuel system pressure. Perform the fuel system pressure test, refer to Fuel System
Diagnosis.
 If the fuel system pressure test is not normal

Replace the G12 Fuel Pump.

 If the fuel system pressure test is normal

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4. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the G12 Fuel Pump. It
may take up to 2 minutes for all vehicle systems to power down.
5. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.
 If 10 ohms or greater

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If less than 10 ohms

6. Connect a test lamp between the control circuit terminal 1 and the low reference circuit terminal 2.
7. Ignition ON.
8. Verify the test lamp turns ON and OFF when commanding the fuel pump ON and OFF with a scan tool.
 If the test lamp is always OFF

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K27 Fuel Pump Control Module.

 If the test lamp is always ON

1. Ignition OFF, disconnect the harness connector at the K27 Fuel Pump Control Module, ignition
ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V, replace the K27 Fuel Pump Control Module.

 If the test lamp turns ON and OFF

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9. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Fuel Tank Fuel Pump Module Replacement

 Control Module References for fuel pump control module replacement, programming and setup

SYMPTOMS - ENGINE CONTROLS

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

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 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Symptoms Description

Symptoms cover conditions that are not covered by DTCs. Certain conditions can cause multiple symptoms.
These conditions are listed together under Symptoms Testing. Conditions that may only cause specific
symptoms are listed separately under additional symptoms testing. Perform the symptoms testing before using
the additional symptoms testing.

Symptoms Definition

Backfire

Fuel ignites in the intake manifold or in the exhaust system, making a loud popping noise.

Cuts Out, Misses

A steady pulsation or jerking that follows engine speed, which is usually more pronounced as the engine
load increases. This condition is not normally felt above 1 500 RPM or 48 km/h (30 MPH). The exhaust
has a steady spitting sound at idle or at low speed.

Detonation/Spark Knock

A mild to severe ping which usually gets worse while under acceleration. The engine makes sharp
metallic knocks that change with throttle opening.

Dieseling, Run-On

Fuel ignites in the intake manifold or in the exhaust system, making a loud popping noise.

Engine Control Module (ECM) Commanded Reduced Engine Power

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The ECM illuminates the Reduced Engine Power lamp and will limit engine power under potential
engine/vehicle damaging or emissions related conditions. A DTC may not be set.

Hard Start

Engine cranks OK, but does not start for a long time. The vehicle does eventually run, or may start but
immediately stalls.

Hesitation, Sag, Stumble

Momentary lack of response as the accelerator is pushed down. This condition can occur at any vehicle
speed. This condition is usually more pronounced when first trying to make the vehicle move, as from a
stop. This condition may cause the engine to stall in severe conditions.

Lack of Power, Sluggishness, or Sponginess

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The engine delivers less than expected power. Little or no increase in speed when the accelerator pedal is
pushed down part way.

Poor Fuel Economy

Fuel economy, as measured by an actual road test, is noticeably lower than expected. Also, the fuel
economy is noticeably lower than it was on this vehicle at one time, as previously shown by an actual
road test.

Poor Fuel Fill Quality

Difficulty when refueling the vehicle.

Rough, Unstable, or Incorrect Idle and Stalling

The engine runs unevenly at idle. If severe, the engine or the vehicle may shake. Engine idle may vary in
speed. Either condition may be severe enough to stall the engine.

Surges/Chuggles

Engine power variation under steady throttle or cruise. Feels like the vehicle speeds up and slows down
with no change in the accelerator pedal position.

Symptoms Verification

Before using the Symptom tables, perform the following inspections:

 Verify that the malfunction indicator lamp (MIL) is operating correctly. Use the scan tool to command
the lamp ON and OFF.
 Verify that there are no DTCs stored.
 Verify that the scan tool data is within the normal operating range. Refer to Control Module References
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for scan tool information.

 Verify that there are no Bulletins concerning the current symptom.
 Verify that the vehicle tires are correctly inflated and meet original equipment specifications.
 Verify the customer concern.
 Perform the Visual/Physical Inspection in this section. The visual/physical inspection is extremely
important, and can lead to correcting a condition without additional testing. It may also help reveal the
cause of an intermittent condition.

Identifying Intermittent Conditions

Many intermittent conditions occur with harness or connector movement due to engine torque, rough pavement,
vibration or physical movements of a component. Refer to the following for a list of issues that may cause an
intermittent condition:

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 Moisture and water intrusion in connectors, terminals, and components
 Incomplete connector mating
 Poor terminal contact
 High circuit or component resistance-High resistance can include any resistance, regardless of the
amount, which can interrupt the operation of the component.
 Harness that is too short or tight
 Wire insulation that is chaffed or cut
 High or low ambient temperature
 High or low engine coolant temperatures
 High underhood temperatures
 Heat build up in component or circuit due to circuit resistance, poor terminal contact, or high electrical
load
 High or low system voltage
 High vehicle load conditions
 Rough road surfaces
 Electro-magnetic interference (EMI)/circuit interference from relays, solenoids or other electrical surge
 Incorrect installation of aftermarket, add on accessories

Visual/Physical Check

 Verify that the control module grounds are clean, tight, and correctly located.
 Verify that the vacuum hoses are not split or kinked, and are properly connected, as shown on the Vehicle
Emission Control Information label.
 Verify that the air filter is clean and free from restrictions.
 Verify that there is no water intrusion in connectors terminals and components.
 Inspect the air intake ducts for the following conditions:
 Collapsed
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 Damaged areas
 Looseness

 Incorrect installation

 Leaking

 Inspect for air leaks at the throttle body mounting area, the mass air flow (MAF) sensor and intake
manifold sealing surfaces.
 Inspect the wiring harness for the following conditions:
 Poor connections

 Pinches

 Cuts

 Inspect for loose, damaged, unseated, or missing sensors/components.

 Inspect the terminals for corrosion and correct contact.

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Symptoms Testing

Backfire, Cuts Out/Misses, Detonation/Spark Knock, Dieseling/Run-On, Engine Control Module (ECM)
Commanded Reduced Engine Power, Hard Start, Hesitation/Sag/Stumble, Lack of
Power/Sluggishness/Sponginess, Poor Fuel Economy, Rough, Unstable, or Incorrect Idle and Stalling, or
Surges/Chuggles

1. Test for the following conditions:

 An incorrectly operating fuel system. Test for the following:

 Correct operation and pressure-Refer to Fuel System Diagnosis.

 Leaking or improperly operating fuel injectors - Refer to Fuel Injector Diagnosis.

 Contaminated or a poor quality fuel - Refer to Alcohol/Contaminants-in-Fuel Diagnosis.

 An incorrectly operating ignition system. Test for the following:

 Spark plugs with an incorrect heat range or an abnormal condition - Refer to Spark Plug
Inspection , and Ignition System Specifications .
 Coolant or oil fouled spark plugs.

 Secondary ignition system susceptible to moisture. Engine running, wet down the secondary
ignition system with water from a spray bottle to help locate damaged or deteriorated
components. Look/listen for arcing or misfiring as the water is applied.
 Weak spark using the EL 26792 HEI spark tester. For equivalent regional tools, refer to
Special Tools . Refer to Electronic Ignition System Diagnosis.
 An incorrectly operating turbocharger system. Refer to Turbocharger System Description , and
Turbocharger Cleaning and Inspection .
 Incorrect operation of the transmission torque converter clutch (TCC) - The scan tool should
indicate an engine speed drop when the TCC is commanded ON.
 Incorrect operation of the A/C compressor

 Items that can cause an engine to run lean or rich - Refer to DTC P0171 or P0172 .

 An incorrectly installed Mass Air Flow (MAF) / Intake Air Temperature (IAT) Sensor
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 Engine oil contaminated by fuel

 Split or kinked vacuum hoses - Verify that the routing and connections are as shown on the vehicle
emission control information label.
 Excessive knock sensor spark retard activity - Refer to Knock Sensor Replacement , and DTC
P0324, P0326, or P06B6.
 Fuel octane switch setting - Verify the fuel octane switch is set to the proper fuel octane rating for
the fuel being used in the vehicle.
 Electromagnetic interference on the reference circuit, which can cause a misfire condition. You can
usually detect electromagnetic interference with a scan tool by monitoring the engine speed
parameter. A sudden increase in the engine speed parameter with little change in actual engine
speed indicates that electromagnetic interference is present. Inspect the high voltage components
near the ignition control circuit if a condition exists.
 A crankshaft position sensor with an incorrect resistance - The crankshaft position sensor resistance

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may be out of range after a hot soak. The resistance should be between 700-1 200 ohms.
 A stuck open evaporative emission (EVAP) canister purge solenoid valve.
 Incorrect operation of the positive crankcase ventilation system - check all connections for leaks or
restrictions.
 An exhaust system condition. Test for the following:
 Physical damage or possible internal failure

 Restricted 3-way catalytic converters

For more information, refer to Symptoms - Engine Exhaust .

 An engine cooling system condition. Test for the following:

 A thermostat with incorrect heat range. Refer to Thermostat Diagnosis (1.4L LUV) .

 Incorrect engine coolant level - Refer to Cooling System Draining and Filling (Static Fill) ,
Cooling System Draining and Filling (GE-47716 Fill) .
 An incorrectly operating engine coolant thermostat heater - Refer to DTC P0597-P0599 .

 An engine mechanical condition. Test for the following mechanical conditions - Refer to
Symptoms - Engine Mechanical .
 Excessive oil in the combustion chamber or leaking valve seals

 Oil Consumption

 Incorrect cylinder compression

 Sticking or leaking valves

 Worn camshaft lobes

 Incorrect valve timing

 Broken valve springs

 Excessive carbon buildup in the combustion chambers. Clean the chambers with top engine
cleaner, if necessary. Follow the instructions on the can.
 Incorrect engine parts

2. If the above conditions do not address the symptom, refer to the additional symptoms tests.
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Additional Symptoms Tests

Detonation/Spark Knock:

 Test the engine for an overheating condition. Refer to Symptoms - Engine Cooling .
 Inspect for excessive carbon buildup in the combustion chambers. Clean the chambers with Top Engine
Cleaner, if necessary. Follow the instructions on the can.
 If there are no engine mechanical faults, fill the fuel tank with a known high quality fuel that meets the
vehicle minimum octane requirements.

ECM Commanded Reduced Engine Power

Under certain conditions the ECM may limit engine power by reducing engine torque and, for some vehicles,
fuel pressure as well. For most, but not all of the conditions, the ECM will illuminate the reduced engine power

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lamp on the instrument panel cluster, however a DTC may not be set. Observe the scan tool Reduced Engine
Power History parameter, if applicable, or refer to K20 Engine Control Module: Scan Tool Information to
determine the reason for the reduced engine power event.

Verify or inspect for the following:

 Vehicle being operated at sustained high engine speeds, or, towing heavy loads up an incline for an
extended period of time, which may cause the engine oil or coolant to overheat. A repair may not be
necessary. Inspect the airflow passageways in front of the engine for obstructions and clear away any
debris or foreign material that is found. If no obstructions are found, review approved driving habits with
the customer. The customer may need to operate the vehicle at a higher engine speed to improve cooling
system performance, or, at a slower engine speed to reduce engine load.
 A cooling fan condition which may cause the ECM to reduce engine power. Refer to Cooling Fan
Description and Operation , and Cooling System Description and Operation (1.4L LUV) , to verify
correct operation of the cooling fan.
 If equipped with the OnStar® feature, reduced engine power may be due to OnStar® remote command.
Verify the vehicle is not in the OnStar® initiated Stolen Vehicle Slowdown mode.
 Excessively high fuel pressure condition. Refer to Fuel System Description , and Fuel System
Diagnosis to verify fuel system operation.
 Maximum recommended engine oil life exceeded. Refer to the Owners Manual for scheduled
maintenance recommendations.
 Turbocharger boost pressure out of range. Refer to DTC P0234 or P0299 .
 Intake air temperature out of range too high. Observe the scan tool IAT Sensor 1 and IAT Sensor 2
parameters. The readings should be within 9°C (16°F) of a each other. Refer to DTC P0096 or P0111 for
more information.
 If equipped with automatic transmission, an incorrect learned brake pedal position (BPP) sensor. Verify
the following actions have not occurred:
 An engine control module (ECM) has been replaced

 A BPP sensor has been replaced

 A BPP sensor is misaligned or incorrectly installed

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If any of the above actions have occurred, the Brake Pedal Position Sensor Learn procedure must
be performed.

Fuel Odor

 Inspect for leaking, damaged, or deteriorated fuel lines.

 Inspect for a saturated EVAP canister - Refer to Evaporative Emission Control System Description .
 Inspect for a condition with the internal components of the fuel tank assembly-Refer to Fuel System
Description .

Hard Start

 Observe the scan tool Throttle Body Idle Airflow Compensation parameter. A value greater than 90%
may indicate an excessive accumulation of deposits in the throttle bore. Inspect the throttle body and bore

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and clean, if necessary. Refer to Throttle Body Inspection and Cleaning .
 Test the engine coolant temperature (ECT) sensor. Compare the ECT sensor value to the intake air
temperature (IAT) sensor value on a cold engine. The ECT and IAT sensor values should be within
approximately 3°C (5°F). If the ECT sensor is out of range with the IAT sensor, test the resistance of the
ECT sensor. Refer to Temperature Versus Resistance (ECT) for resistance specifications. Replace the
ECT sensor if the resistance is not within specification. If the sensor is within the specification, test the
ECT circuits for a high resistance.
 Verify that the fuel pump turns ON for 2 s when the ignition is turned ON. Refer to Fuel System
Diagnosis for additional information.

Hesitation, Sag, Stumble

 Test the fuel pressure. Refer to Fuel System Diagnosis.

 Test the manifold absolute pressure (MAP) sensor. Refer to DTC P0106 .
 Test the generator. Refer to Symptoms - Engine Electrical . Repair the charging system if the generator
output voltage is less than 9 V or more than 16 V.

NOTE: The following actions may need to be repeated in order to verify an

intermittent intake or exhaust camshaft actuator condition.

 Engine warm and idling, verify the correct operation of the camshaft actuator system. Command the
intake and exhaust camshaft actuators from 0 degrees to 25 degrees and back to zero while observing the
scan tool Intake Camshaft Position Variance and Exhaust Camshaft Position Variance parameters. Each
parameter should be less than 2 degrees in each of the commanded states.
 If any of the parameters is greater than 2 degrees, inspect the suspect camshaft actuator and
camshaft actuator solenoid valve and valve bore for contamination, obstruction, and damage. Refer
to Camshaft Actuator System Description , and Camshaft Position Actuator Solenoid Valve
Replacement .

Lack of Power, Sluggishness, or Sponginess

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 Inspect the engine electrical system for correct operation. Refer to Symptoms - Engine Electrical .
 Verify that each injector harness is connected to the correct injector.
 Inspect the mass air flow (MAF) sensor for obstruction, contamination, and damage. Refer to Mass
Airflow Sensor Replacement .

NOTE: The following actions may need to be repeated in order to verify an

intermittent intake or exhaust camshaft actuator condition.

 Engine warm and idling, verify the correct operation of the camshaft actuator system. Command the
intake and exhaust camshaft actuators from 0 degrees to 25 degrees and back to zero while observing the
scan tool Intake Camshaft Position Variance and Exhaust Camshaft Position Variance parameters. Each
parameter should be less than 2 degrees in each of the commanded states.
 If any of the parameters is greater than 2 degrees, inspect the suspect camshaft actuator and

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camshaft actuator solenoid valve and valve bore for contamination, obstruction, and damage. Refer
to Camshaft Actuator System Description , and Camshaft Position Actuator Solenoid Valve
Replacement .
 Verify the correct operation of the turbocharger system. Perform the following:
 Inspect the turbocharger moving components for looseness, binding, wear, and damage.

 Verify that the turbocharger air inlet ducts and outlet ducts are tightly sealed and that the air
passages are not obstructed. Engine running, use a solution of dish soap and water in a spray bottle
to pinpoint any air leaks.
 Inspect the turbocharger system components for external fluid leaks. Inspect the gaskets and sealing
surfaces and look for cracks in the turbocharger components.
 Inspect for a loss of turbocharger pressure. Ignition ON, verify the scan tool Turbo Boost Sensor
parameter is within the range specified in the Altitude Versus Barometric Pressure .
 If not within the range specified, refer to DTC P0236

 For additional information, refer to Turbocharger System Description , and Turbocharger

Cleaning and Inspection .

Poor Fuel Economy

 Inspect for heavy loads being carried or towed

 Inspect for acceleration rate too much or too often
 Inspect for incorrect operation of the speedometer.
 Observe the scan tool Throttle Body Idle Airflow Compensation parameter. A value greater than 90%
may indicate an excessive accumulation of deposits in the throttle bore. Inspect the throttle body and bore
and clean, if necessary. Refer to Throttle Body Inspection and Cleaning .
 Inspect the brake system for brake drag.

Poor Fuel Fill Quality

 Inspect for restricted vent lines

 Inspect for high fuel temperature
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 Inspect for a condition with the internal components of the fuel tank assembly

For more information, refer to Fuel System Description , and Evaporative Emission Control System
Description .

Rough, Unstable, or Incorrect Idle and Stalling

 Observe the scan tool Throttle Body Idle Airflow Compensation parameter. A value greater than 90%
may indicate an excessive accumulation of deposits in the throttle bore. Inspect the throttle body and bore
and clean, if necessary. Refer to Throttle Body Inspection and Cleaning .
 Inspect the engine mounts for looseness, wear, and damage.
 Inspect the intake and exhaust manifolds for casting flash.
 An excessively high idle may be due to the floor mat interfering with the accelerator pedal. With this
condition present, it may not be possible to shift the transmission into gear. Inspect the accelerator pedal

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for binding and verify that the floor mat is not interfering with the aceclerator pedal movement.

Surges/Chuggles

 Verify that each injector harness is connected to the correct injector.

 Inspect the mass air flow (MAF) sensor for obstruction, contamination, and damage. Refer to Mass
Airflow Sensor Replacement .
 Inspect for slow responding heated oxygen sensors (HO2S). The heated oxygen sensors should respond
quickly to a change in throttle position. If the heated oxygen sensors do not respond to different throttle
positions, inspect for contamination from fuel, silicon, or the incorrect use of room temperature
vulcanizing sealant. The sensors may have a white powdery coating and result in a high, but false, signal
voltage, which gives a rich exhaust indication. The ECM reduces the amount of fuel delivered to the
engine, causing a driveability condition.

MALFUNCTION INDICATOR LAMP (MIL) DIAGNOSIS

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The malfunction indicator lamp (MIL) illuminates to inform the driver that an emission system fault has
occurred and the engine control system requires service. Ignition voltage is supplied directly to the MIL. The
engine control module (ECM) turns the MIL ON by grounding the MIL control circuit when the emission
system fault occurs. Under normal operating conditions, the MIL should be ON only when the ignition is ON
and the engine is OFF.

Diagnostic Aids
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If the condition is intermittent, move the related harnesses and connectors while monitoring the scan tool MIL
control circuit status parameters. Perform this test with the ignition ON and the engine OFF, and with the engine
running. The MIL control circuit status parameters change from OK or Not Run to Fault if there is a condition
with a circuit or a connection.

Reference Information

Schematic Reference

 Engine Controls Schematics

 Instrument Cluster Schematics

Connector End View Reference

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COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

NOTE: Any MIL requesting DTCs that may be set should be diagnosed first.

1. Ignition ON.
2. Command the malfunction indicator lamp ON and OFF with a scan tool.
3. Verify that the malfunction indicator lamp turns ON and OFF as commanded.
 If the malfunction indicator lamp does not turn ON and OFF as commanded

Refer to Circuit/System Testing below.

If the malfunction indicator lamp turns ON and OFF as commanded

4. Command the malfunction indicator lamp ON and OFF with a scan tool.
5. Verify that the control circuit status parameters listed below display OK or Not Run
 The MIL Control Circuit Low Voltage Test Status

 The MIL Control Circuit Open Test Status

 The MIL Control Circuit High Voltage Test Status

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 If Malfunction is displayed

Refer to Circuit/System Testing below.

If OK or Not Run is displayed

6. Engine running.
7. Command the malfunction indicator lamp ON and OFF with a scan tool.
8. Verify that the control circuit status parameters listed below display OK or Not Run
 The MIL Control Circuit Low Voltage Test Status

 The MIL Control Circuit Open Test Status

 The MIL Control Circuit High Voltage Test Status

 If Malfunction is displayed

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Refer to Circuit/System Testing below.

If OK or Not Run is displayed



9. All OK.

Circuit/System Testing

1. Ignition OFF.
2. Disconnect the X1 harness connector at the K20 Engine Control Module.
3. Ignition ON.
4. Verify the malfunction indicator lamp does not illuminate.
 If the malfunction indicator lamp illuminates

1. Test for infinite resistance between the malfunction indicator lamp control circuit terminal X1 52
and ground.
 If less than infinite resistance, repair the short to ground in the circuit.

 If infinite resistance, replace the P16 instrument cluster.

 If the malfunction indicator lamp does not illuminate

5. Connect a 3 A fused jumper wire between the malfunction indicator lamp control circuit terminal X1 52
and ground.
6. Verify the malfunction indicator lamp illuminates.
 If the malfunction indicator lamp does not illuminate

1. Test the malfunction indicator lamp control circuit terminal X1 52 for a short to voltage or an
open/high resistance.
 If the malfunction indicator lamp control circuit terminal X1 52 is shorted to voltage or has
an open/high resistance, repair as necessary.
 If the malfunction indicator lamp control circuit terminal X1 52 tests normal

2. Test the instrument cluster ignition voltage circuit for a short to ground or open/high resistance.
 If the instrument cluster ignition voltage circuit is shorted to ground or has an open/high
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

resistance, repair as necessary.

 If the instrument cluster ignition voltage circuit tests normal, replace the P16 instrument
panel cluster/bulb.
 If the malfunction indicator lamp illuminates

7. Replace the K20 Engine Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Instrument Cluster Replacement

 Control Module References for replacement, programming, and setup.

ENGINE CRANKS BUT DOES NOT RUN

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Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The engine cranks but does not run is an organized approach to identify a condition which causes the engine to
crank but not start. This diagnostic directs the technician to the appropriate system diagnosis.

This diagnostic assumes the system voltage levels are adequate for starter motor operation. Fuel level and fuel
quality must be determined for correct diagnosis.

Diagnostic Aids

Inspect for any of the following conditions:

 Insufficient fuel can cause a no start condition. Thoroughly inspect the fuel delivery system for sufficient
fuel volume to the fuel injectors. Inspect the fuel supply components for partial blockage or restrictions.
 Fuel injectors with partially blocked and restricted nozzles, or a malfunctioning solenoid, can cause a no
start condition. Refer to Fuel Injector Diagnosis.
 There may be fuel spray at the fuel injectors and the indicated fuel pressure may be correct, yet there may
not be enough fuel to start the engine. If the fuel injectors and the injector circuit are OK, and fuel spray
is detected, the fuel injector ON time may be inadequate. If the engine control module (ECM) receives
incorrect inputs from the various information sensors, the fuel delivered by the fuel injectors may be
inadequate to start the engine. Check all the engine data parameters with a scan tool and compare the
values indicated with the expected values or the values from a known vehicle in good condition.
 Check the crankshaft position sensor engine reference signal with a scan tool. Observe the engine speed
parameter while cranking the engine. The scan tool should indicate a steady 200-300 RPM while
cranking. If erratic values, such as sudden spikes in the engine speed, are displayed, the engine reference
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

signal is not stable enough for the engine to start and run properly.
 Inspect the engine for good secure electrical grounds.
 If the engine almost starts and then stalls, check for an open in the ground circuits of the crankshaft
position sensor and the camshaft position sensor - intake or camshaft position sensor - exhaust.
 Water or foreign material in the fuel can cause a no start or engine will not stay running condition. During
freezing weather water can freeze inside the fuel system. The engine may start after 30 min in a heated
repair shop. The malfunction may not recur until parked overnight in freezing temperatures. Extreme
weather conditions can cause contaminated fuel to prevent the vehicle from starting.
 A vehicle that starts and runs after being brought to the repair shop for a no start condition, may have an
ignition system that is susceptible to moisture. Spray water on the ignition system components and the
wiring in order to check for an engine starting or will not stay running concern.

Reference Information

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Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Special Tools

 EL 26792 HEI Spark Tester

 EN 36012-A Ignition System Diagnostic Harness

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

NOTE: This diagnostic assumes the following:

 The battery is completely charged. Refer to Battery Inspection/Test .

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 The engine cranking speed is acceptable. Refer to Engine Cranks Slowly .

 There is adequate fuel in the fuel tank.

Circuit/System Testing

1. Crank the engine for up to 15 s.

2. Verify that DTC P0117, P0118, P0122, P0123, P0222, P0223, P0335, P0336, P0513, P0562, P0563,
P0601, P0602, P0603, P0604, P0606, P062F, P0633, P0685, P0689, P0690, P1516, P1631, P1682,
P16F3, P2101, P2119, or P2610 is not set.
 If any of the DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

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 If none of the DTCs are set
3. Ignition ON.
4. Verify the security indicator on the instrument panel cluster illuminates momentarily.
 If the indicator stays ON or is flashing

Refer to Diagnostic Trouble Code (DTC) List - Vehicle , and Immobilizer Description and
Operation .

If the indicator does not stay ON and is not flashing

5. Verify the scan tool Engine Speed parameter is greater than 0 RPM while cranking the engine.
 If 0 RPM

Refer to DTC P0335 or P0336 for further diagnosis.

 If greater than 0 RPM

NOTE: It may be necessary to secure the EN 36012-A ignition system diagnostic

harness to the spark plug boots with electrical tape.

6. Install the EN 36012-A ignition system diagnostic harness to the spark plug boots.
7. Connect the EL 26792 HEI spark tester between the boot of a spark plug wire and ground.
8. Connect the remaining wires to the appropriate cylinders.

NOTE: An erratic or weak spark is considered a no spark condition.

9. Verify that the spark tester sparks while cranking the engine.
 If the spark tester does not spark

Refer to Electronic Ignition System Diagnosis for further diagnosis.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If the spark tester sparks

10. Verify that the fuel system operates correctly and produces the correct fuel pressure-Perform the Fuel
System Diagnosis.
 If the fuel system does not operate correctly or does not produce the correct fuel pressure

Refer to Fuel System Diagnosis.

If the fuel system operates correctly and produces the correct fuel pressure
11. Verify the following conditions do not exist:
 Collapsed air intake duct to the throttle body

 Restricted or obstructed air filter or air intake system

 Spark plugs gas or coolant fouled

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 A skewed manifold absolute pressure (MAP) sensor. Refer to DTC P0106 .

 A skewed engine coolant temperature (ECT) sensor. Refer to DTC P0116

 A restricted exhaust system. Refer to Restricted Exhaust .

 Contaminated fuel. Refer to Alcohol/Contaminants-in-Fuel Diagnosis.

 Engine mechanical condition, for example, worn timing chain and gears or low compression-Refer
to Symptoms - Engine Mechanical .
 If a condition exists

Repair as necessary.

 If no conditions exist
12. All OK

Repair Verification

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Spark Plug Replacement

FUEL SYSTEM DIAGNOSIS

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that
the ignition is ON. The voltage from the ECM to the fuel pump control module remains active for 2 s, unless
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

the engine is in Crank or Run. While this voltage is being received, the fuel pump control module closes the
ground switch of the fuel pump and also supplies a varying voltage to the fuel tank fuel pump module in order
to maintain the desired fuel line pressure.

The fuel system is an electronic returnless on-demand design. A returnless fuel system reduces the internal
temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Reducing the internal
temperature of the fuel tank results in lower evaporative emissions.

The fuel tank stores the fuel supply. An electric turbine style fuel pump attaches to the fuel tank fuel pump
module inside the fuel tank. The fuel pump supplies high pressure fuel through the fuel feed pipe to the fuel
injection system. The fuel pump also supplies fuel to a venturi pump located on the bottom of the fuel tank fuel
pump module. The function of the venturi pump is to fill the fuel tank fuel pump module reservoir. The fuel
tank fuel pump module contains a reverse flow check valve. The check valve maintains fuel pressure in the fuel
feed pipe and the fuel rail in order to prevent long cranking times.

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Diagnostic Aids

Observe the Misfire Counters or perform the Fuel Injector Balance Test to help identify a leaking fuel injector.

Reference Information

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Special Tools

 CH 48027 Digital Pressure Gauge

 EN 37287 Fuel Line Shut-off Adapter

For equivalent regional tools, refer to Special Tools .

Circuit/System Verification

NOTE:  Repair all fuel system related DTCs, except P2635, before performing this
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

diagnostic.
 Inspect the fuel system for damage or external leaks before proceeding.
 Verify that adequate fuel is in the fuel tank before proceeding.
 The Fuel Pump Enable may need to be commanded On a few times in
order to obtain the highest possible fuel pressure.
 Before proceeding with this test review the User Manual CH 48027-5 for
Safety Information and Instructions.

1. Ignition OFF, all accessories OFF, install a CH 48027 Gauge.

NOTE: DO NOT perform the Fuel System Diagnosis if the engine coolant
temperature is above 60°C (150°F). High fuel pressure readings may result
due to hot soak fuel boiling. With the engine OFF, the fuel pressure may

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increase beyond the pressure relief regulator valve's setting point of 690
kPa (100 psi) ± 5 percent.

2. Ignition ON, engine OFF, command the Fuel Pump Enable On several times with a scan tool.
3. Verify the fuel pressure is between 345-650 kPa (50-94 psi) with the fuel pump running.
 If less than 345 kPa (50 psi)

Refer to Circuit/System Testing below - Fuel Pressure Low.

 If greater than 650 kPa (94 psi)

Replace the G12 Fuel Pump.

If between 345-650 kPa (50-94 psi)

4. Verify that the fuel pressure decreases to less than 600 kPa (87 psi) after the fuel pump is turned off.
 If greater than 600 kPa (87 psi)

Replace the G12 Fuel Pump.

If less than 600 kPa (87 psi)

5. Verify that the fuel pressure does not decrease more than 34 kPa (5 psi) in 1 minute.
 If greater than 34 kPa (5 psi)

Refer to Circuit/System Testing below - Fuel Pressure Leaks Down.

If less than 34 kPa (5 psi)

6. Relieve the fuel pressure to 69 kPa (10 psi).
7. Verify that the fuel pressure does not decrease more than 14 kPa (2 psi) in 5 min.
 If greater than 14 kPa (2 psi)
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Replace the G12 Fuel Pump.

If less than 14 kPa (2 psi)

8. Engine idling at normal operating temperature.
9. Verify the Fuel Pump Control Module Fuel Pressure Sensor parameter is between 300-400 kPa (43-58
psi).
 If less than 300 kPa (43 psi)

Refer to Circuit/System Testing below- Fuel Pressure Low.

 If greater than 400 kPa (58 psi)

Replace the G12 Fuel Pump.

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If between 300-400 kPa (43-58 psi)
10. Verify the scan tool Short Term Fuel Pump Trim and the Long Term Fuel Pump Trim when multiplied
together are less than 1.5.
 If greater than 1.5

Refer to Circuit/System Testing below- Fuel Pressure Low.

If less than 1.5

11. Verify the scan tool Fuel Pressure Sensor and the Desired Fuel Pressure are within 45 kPa (6.5 psi) at 300
kPa (43.5 psi) request or 60 kPa (8.7 psi) at 400 kPa (58 psi) request of each other while operating the
vehicle through varying loads.
 If greater than 45 kPa (6.5 psi)/60 kPa (8.7 psi)

Refer to Circuit/System Testing below- Fuel Pressure Drops Off.

 If less than 45 kPa (6.5 psi)/60 kPa (8.7 psi)

12. If the fuel system components test normal, refer to Symptoms - Engine Controls, and Fuel Injector
Diagnosis.

Circuit/System Testing

Fuel Pressure Low

1. Verify none of the conditions listed below exist:

 Restricted fuel feed pipe

 Inspect the harness connectors and the ground circuits of the fuel pump for poor connections.

 If a condition exists

Repair as necessary.

 If none of the conditions exist

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Replace the G12 Fuel Pump.

Fuel Pressure Leaks Down

1. Ignition OFF, relieve the fuel pressure. Refer to Fuel Pressure Relief .
2. Install the EN 37287 Adapter between the chassis fuel feed hose and the engine compartment fuel feed
pipe.
3. Open the valve on the EN 37287 Adapter.
4. Ignition ON, command the Fuel Pump Enable On with a scan tool and bleed the air from the CH 48027
Gauge.
5. Command the Fuel Pump Enable On and then Off with a scan tool.
6. Close the valve on the EN 37287 Adapter.
7. Verify that the fuel pressure does not decrease more than 34 kPa (5 psi) in 1 min.

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 If greater than 34 kPa (5 psi)

Locate and replace the leaking Q17 Fuel Injector.

 If less than 34 kPa (5 psi)

Replace the G12 Fuel Pump.

Fuel Pressure Drops Off

1. Verify none of the conditions listed below exist:

 Restricted fuel feed pipe

 Inspect the harness connectors and the ground circuits of the fuel pump for poor connections.

 If a condition exists

Repair as necessary.

 If none of the conditions exist

Replace the G12 Fuel Pump.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Fuel Feed Pipe Replacement

 Fuel Injector Replacement
 Fuel Tank Fuel Pump Module Replacement

FUEL INJECTOR DIAGNOSIS

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The engine control module (ECM) enables the appropriate fuel injector pulse for each cylinder. The ignition
voltage is supplied directly to the fuel injectors. The ECM controls each fuel injector by grounding the control
circuit via a solid state device called a driver. A fuel injector coil winding resistance that is too high or too low
will affect the engine driveability. A fuel injector control circuit DTC may not set, but a misfire may be
apparent. The fuel injector coil windings are affected by temperature. The resistance of the fuel injector coil
windings will increase as the temperature of the fuel injector increases.

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When performing the fuel injector balance test with the fuel injector tester or the scan tool, the scan tool is first
used to enable the fuel pump. The fuel injector tester or the scan tool is then used to pulse each injector for a
precise amount of time, allowing a measured amount of fuel to be injected. This causes a drop in the system fuel
pressure that can be recorded and used to compare each injector.

Diagnostic Aids

 Operating the vehicle over a wide temperature range may help isolate the fuel injector that is causing the
condition.
 Perform the fuel injector coil test within the conditions of the concern from the customer. A fuel injector
condition may only be apparent at a certain temperature, or under certain conditions.
 Monitoring the Current Misfire Counters, or misfire graph, may help to isolate the fuel injector that is
causing the condition.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Fuel System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Testing for Intermittent Conditions and Poor Connections

 Wiring Repairs

Special Tools

 CH 48027 Digital Pressure Gauge

 EL 39021 Fuel Injector Coil and Balance Tester

For equivalent regional tools, refer to Special Tools .

Fuel Injector Coil Test

Verify the resistance of each Q17 Fuel Injector with one of the following methods:

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 If the engine coolant temperature (ECT) sensor is between 10-32°C (50-90°F), the resistance of each fuel
injector should be 11-14 ohms. If the injectors measure OK, perform the Fuel Injector Balance Test.
 If not within the specified range, replace the Q17 Fuel Injector.

 If the ECT sensor is not between 10-32°C (50-90°F), measure and record the resistance of each fuel
injector. Subtract the lowest resistance value from the highest resistance value. The difference between
the lowest value and the highest value should be equal to or less than 3 ohms. If the injectors measure
OK, perform the Fuel Injector Balance Test.
 If not within the specified range, add all of the fuel injector resistance values to obtain a total
resistance value. Divide the total resistance value by the number of fuel injectors to obtain an
average resistance value. Subtract the lowest individual fuel injector resistance value from the
average resistance value. Compute the difference between the highest individual fuel injector
resistance value and the average resistance value. Replace the Q17 Fuel Injector that displays the
greatest difference above or below the average.

Fuel Injector Balance Test with Special Tool

NOTE:  DO NOT perform this test if the engine coolant temperature (ECT) is
above 94°C (201°F). Irregular fuel pressure readings may result due
to hot soak fuel boiling.
 Verify that adequate fuel is in the fuel tank before proceeding with
this diagnostic.
 Before proceeding with this test review the User Manual CH 48027-5
for Safety Information and Instructions.

1. Verify the correct fuel system pressure. Refer to Fuel System Diagnosis.
2. Set the amperage supply selector switch on the fuel injector tester to the Balance Test 0.5-2.5 A position.
3. Connect the EL 39021 fuel injector coil and balance tester to a Q17 Fuel Injector.
4. Command the Fuel Pump Enable On and then Off three times with a scan tool. On the last command, as
the fuel pressure begins to slowly degrade and stabilize, select a fuel pressure within 34 kPa (5 psi) of the
maximum pump pressure. Record this fuel pressure. This is the starting pressure at which you will pulse
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

each injector.
5. Command the Fuel Pump Enable On one more time and energize the fuel injector by depressing the Push
to Start Test button on the EL 39021 fuel injector coil and balance tester at the previously selected
pressure.
6. After the injector stops pulsing, select Min from the Display Mode on the CH 48027 gauge and record
the Min pressure.

NOTE: New test results will not be recorded if the Min/Max results are not cleared
after each injector is tested.

7. Clear the Min/Max results on the CH 48027 gauge.

8. Select Normal from the Display Mode on the CH 48027 gauge.
9. Repeat steps 3 and 5 through 8 for each fuel injector.

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10. Subtract the minimum pressure from the starting pressure for one fuel injector. The result is the pressure
drop value.
11. Obtain a pressure drop value for each fuel injector.
12. Add all of the individual pressure drop values except for the injector suspected of being faulty. This is the
total pressure drop.
13. Divide the total pressure drop by the number of fuel injectors that were added together. This is the
average pressure drop. The difference between any individual pressure drop and the average pressure
drop should not be more than 20 kPa (3 psi).
 If the difference between any individual pressure drop and the average pressure drop is more than
20 kPa (3 psi), replace the Q17 Fuel Injector.

Fuel Injector Balance Test with Scan Tool

1. Verify the correct fuel system pressure. Refer to Fuel System Diagnosis.
2. Command the Fuel Pump Enable On and then Off three times with a scan tool. On the last command, as
the fuel pressure begins to slowly degrade and stabilize, select a fuel pressure within 34 kPa (5 psi) of the
maximum pump pressure. Record this fuel pressure. This is the starting pressure at which you will pulse
each injector.
3. With a scan tool, select the Fuel Injector Balance Test function within the Special Functions menu.
4. Select an injector to be tested.
5. Press Enter to prime the fuel system.
6. Energize the fuel injector by depressing the Pulse Injector button on the scan tool at the previously
selected pressure.
7. After the injector stops pulsing, select Min from the Display Mode on the CH 48027 gauge and record
the Min pressure.

NOTE: New test results will not be recorded if the Min/Max results are not cleared
after each injector is tested.

8. Clear the Min/Max results on the CH 48027 gauge.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

9. Select Normal from the Display Mode on the CH 48027 gauge.

10. Press Enter on the scan tool to bring you back to the Select Injector screen.
11. Repeat steps 4 through 10 for each fuel injector.
12. Subtract the minimum pressure from the starting pressure for one fuel injector. The result is the pressure
drop value.
13. Obtain a pressure drop value for each fuel injector.
14. Add all of the individual pressure drop values except for the injector suspected of being faulty. This is the
total pressure drop.
15. Divide the total pressure drop by the number of fuel injectors that were added together. This is the
average pressure drop. The difference between any individual pressure drop and the average pressure
drop should not be more than 20 kPa (3 psi).
 If the difference between any individual pressure drop and the average pressure drop is more than
20 kPa (3 psi), replace the Q17 Fuel Injector.

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Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Fuel Injector Replacement

FUEL INJECTOR CIRCUIT DIAGNOSIS

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Short to Open/High Short to

Circuit Ground Resistance Voltage Signal Performance
P0201*,
P0202*,
P0203*, P0201**, P0202**,
P0204*, P0203**, P0204**,
Ignition Voltage - -
P0261*, P0261**, P0264**,
P0264*, P0267**, P0270**
P0267*,
P0270*
Injector 1 Control P0201, P0261 P0201, P0300 P0262, P0300 -
Injector 2 Control P0202, P0264 P0202, P0300 P0265, P0300 -
Injector 3 Control P0203, P0267 P0203, P0300 P0268, P0300 -
Injector 4 Control P0204, P0270 P0204, P0300 P0271, P0300 -
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

* Open fuse, cranks no start.

** Cranks no start if the condition is between the fuse and the splice.

Circuit/System Description

The engine control module (ECM) enables the appropriate fuel injector pulse for each cylinder. Ignition voltage
is supplied to the fuel injectors. The ECM controls each fuel injector by grounding the control circuit via a solid
state device called a driver.

Reference Information

Schematic Reference

Engine Controls Schematics

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Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

Scan Tool Reference

Control Module References

Special Tool

CH 34730-2C Noid Light

Circuit/System Verification

1. Engine cranking or running.

2. Verify the scan tool parameters listed below do not display Malfunction.
 Cylinder 1-4 Injector Control Circuit Low Voltage Test Status

 Cylinder 1-4 Injector Control Circuit Open Test Status

 Cylinder 1-4 Injector Control Circuit High Voltage Test Status

 If Malfunction is displayed

Refer to Circuit/System Testing below.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If Malfunction is not displayed



3. All OK.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at a Q17 Fuel Injector, ignition ON.
2. Verify a test lamp illuminates between the ignition circuit terminal 1 and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

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 If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF, remove the test lamp.

2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, test all components connected to the ignition voltage circuit for a short
and replace as necessary.
 If the test lamp illuminates

3. Verify that a test lamp does not illuminate between the ignition circuit 1 and the control circuit 2.
 If the test lamp illuminates

1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K20 Engine Control
Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the test lamp does not illuminate

4. Ignition OFF, connect the CH 34730-2C Noid Light to a fuel injector connector.
5. Engine cranking.
6. Verify the CH 34730-2C Noid Light turns ON and OFF for each fuel injector connector.
 If the CH 34730-2C is always OFF

1. Ignition OFF, remove the CH 34730-2C Noid Light, disconnect the harness connector at the K20
Engine Control Module, ignition ON.
2. Test for less than 1 V between the control circuit and ground.
 If 1 V or greater, repair the short to voltage on the circuit.

 If less than 1 V

3. Ignition OFF.
4. Test for less than 2 ohms in the control circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

If less than 2 ohms, replace the K20 Engine Control Module.



 If the CH 34730-2C is always ON

1. Ignition OFF, remove the CH 34730-2C Noid Light, disconnect the harness connector at the K20
Engine Control Module.
2. Test for infinite resistance between the control circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance, replace the K20 Engine Control Module.

 If the CH 34730-2C turns ON and OFF

7. Test or replace the Q17 Fuel Injector.

Component Testing

Fuel Injector Diagnosis

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Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Fuel Injector Replacement

 Control Module References for Engine Control Module replacement, programming, and setup.

ALCOHOL/CONTAMINANTS-IN-FUEL DIAGNOSIS

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Test Description

Water contamination in the fuel system may cause driveability conditions such as hesitation, stalling, no start,
or misfires in one or more cylinders. Water may collect near a single fuel injector at the lowest point in the fuel
injection system and cause a misfire in that cylinder. If the fuel system is contaminated with water, inspect the
fuel system components for rust or deterioration.

Ethanol concentrations of greater than 10 percent can cause driveability conditions and fuel system
deterioration. Fuel with more than 10 percent ethanol could result in driveability conditions such as hesitation,
lack of power, stalling, or no start. Excessive concentrations of ethanol used in vehicles not designed for it may
cause fuel system corrosion, deterioration of rubber components, and fuel filter restriction.

Reference Information

Special Tool
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

CH 44175-A Fuel Composition Tester, if available

For equivalent regional tools, refer to Special Tools .

System Verification

The fuel sample should be drawn from the bottom of the tank so that any water present in the tank will be
detected. The sample should be bright and clear.

 If the sample appears cloudy, or contaminated with water, as indicated by a water layer at the bottom of
the sample, perform the Particulate Contaminants in Fuel Testing Procedure.
 If alcohol contamination is suspected, perform the Alcohol in Fuel Testing procedure.

Alcohol in Fuel Testing with Special Tool, If Available

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1. Test the fuel composition using the CH 44175-A Fuel Composition Tester and the Instruction Manual.
2. If water appears in the fuel sample, clean the fuel system.
3. Subtract 50 from the reading on the DMM in order to obtain the percentage of alcohol in the fuel sample.
4. If the fuel sample contains more than 15 percent ethanol, add fresh, regular gasoline to the vehicle's fuel
tank.
5. Test the fuel composition.
6. If testing shows the ethanol percentage is still more than 15 percent, replace the fuel in the vehicle.

Alcohol in Fuel Testing without Special Tool

1. Using a 100 ml (3.38 oz) specified cylinder with 1 ml (0.034 oz) graduation marks, fill the cylinder with
fuel to the 90 ml (3.04 oz) mark.
2. Add 10 ml (0.34 oz) of water in order to bring the total fluid volume to 100 ml (3.38 oz) and install a
stopper.
3. Shake the cylinder vigorously for 10-15 seconds.
4. Carefully loosen the stopper in order to release the pressure.
5. Re-install the stopper and shake the cylinder vigorously again for 10-15 seconds.
6. Put the cylinder on a level surface for approximately 5 min in order to allow adequate liquid separation. If
alcohol is present in the fuel, the volume of the lower layer, which would now contain both alcohol and
water, will be more than 10 ml (0.34 oz). For example, if the volume of the lower layer is increased to 15
ml (0.51 oz), this indicates at least 5 percent alcohol in the fuel. The actual amount of alcohol may be
somewhat more because this procedure does not extract all of the alcohol from the fuel.

Particulate Contaminants in Fuel Testing Procedure

1. Using an approved fuel container, draw approximately 0.5 liter (0.53 qt) of fuel.
2. Place the container on a level surface for approximately 5 min in order to allow settling of the particulate
contamination. Particulate contamination will show up in various shapes and colors. Sand will typically
be identified by a white or light brown crystals. Rubber will appear as black and irregular particles.
3. Observe the fuel sample. If any physical contaminants or water are present, clean the fuel system.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

 Fuel System Cleaning

 Fuel Tank Draining

EVAPORATIVE EMISSION CONTROL SYSTEM DIAGNOSIS

Special Tools

EN 41413-VLV EVAP Service Port Vent Fitting

Operating Instructions for the Evaporative Emission System Tester (EEST)

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Vehicle Setup

WARNING: Refer to Fuel and Evaporative Emission Pipe Warning .

CAUTION: Refer to Clean, Dry, Low Pressure Gas Source Caution .

NOTE: When servicing the EVAP system, test pressure must not exceed 13 in H20
(0.5 PSI) as pressure in excess of this could cause system components to
perform inaccurately.

NOTE: A large difference between the vehicle temperature and shop temperature
will seriously affect the accuracy of the tests. Always allow at least 15 min
for the vehicle temperature to adjust to the shop temperature. Refer to
Temperature Variation Instructions for more information about vehicle
versus shop temperatures.

1. Engine OFF, open the hood. Position a large fan to blow air under the vehicle onto the fuel tank area.
2. Connect the red battery clip from the tester to the positive battery terminal.

NOTE: The vehicle battery must be fully charged for optimum tester performance.

3. Connect the black battery clip from the tester to chassis ground.

Flow Meter Test - Leak Detection

CAUTION: Refer to Fuel and Evaporative Emission Hose/Pipe Connection Cleaning

Caution .
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

1. Open the Nitrogen tank valve and turn the NITROGEN/SMOKE valve on the front control panel to
NITROGEN.
2. Connect the hose to the correct test orifice on the bottom front of the tester. For orifice size, refer to the
vehicle specific information found in service procedures for DTCs that relate to evaporative emission
(EVAP) system leaks.
3. Press and release the remote switch to activate the tester.

NOTE: The tester will time out after about 15 min. You may press the remote
switch to reactivate the tester as desired.

4. Position the sliding red flag on the flow meter to align with the floating indicator. When the red flag is
set, press and release the remote switch to deactivate the tester.
5. Remove the hose from the test orifice and install the hose onto the vehicle. For proper connection

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location, and the special tool numbers for any adapters that may be required, refer to the service
procedures for DTCs that relate to EVAP system leaks.
6. Ignition ON, seal the EVAP system per instructions in the service procedures for DTCs that relate to
EVAP system leaks. Most systems can be sealed using a scan tool output control for the EVAP vent
solenoid valve, other systems require that the vent system be plugged.

NOTE:  Larger volume fuel tanks, and/or those with lower fuel levels, may
require several minutes to fill with nitrogen.
 Static buildup may cause the float indicator to stick. It may be
necessary to tap on the flow meter to free up the float.
 If fuel level is 90 % or greater it will take longer to fill the system with
smoke because the fuel fill tube check valve will be closed and force
any smoke to pass through the ORVR pipe and orifice.

7. Press and release the remote switch to activate the nitrogen flow and fill the system.
8. Compare the stable floating indicator position to the red flag.
 Below the red flag, the result is acceptable, Pass. Test complete

 Above the red flag, the result is unacceptable, Fail. Go to the Smoke Procedure

9. Press and release the remote switch to deactivate the tester.

Smoke Procedure - Locate the Leak

NOTE: It is not recommended to use the tester in an outside repair bay area
because wind and sunlight may affect temperature and your ability to see
the smoke.

1. Turn OFF any fans that may cause air movement around or near the vehicle.

NOTE: Completely unwind the nitrogen/smoke hose from the bracket to optimize
the tester's performance.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

2. Connect the nitrogen/smoke hose to the vehicle as directed in the service procedures. Some vehicles
require that the nitrogen/smoke hose be connected at the front of the EVAP system at the EVAP service
port. An adapter may be necessary. Other vehicles require the connection be made at the rear of the
system using an adapter at the fuel fill cap. Consult the service procedures for DTCs that relate to
evaporative emission (EVAP) system leaks for vehicle specific instructions regarding connection location
and adapters.
3. Open the nitrogen tank valve and turn the nitrogen/smoke valve on the control panel to smoke.

NOTE: The remote switch operates on a push ON, push OFF fashion.

4. Press and release the remote switch to activate the tester and inject smoke into the EVAP system.
5. Verify smoke has filled the EVAP system by opening the system opposite the end where smoke is
injected. When injecting smoke at the service port, remove the fuel fill cap until smoke is observed. Then
close the system and continue testing. If using a special tool fuel fill cap adapter at the filler neck, vent the

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system at the service port, with special tool EN 41413-VLV EVAP Service Port Vent Fitting, until smoke
is observed then remove the vent fitting tool and close the system to continue with the test.

NOTE: Inject smoke in less than 2 min cycles for optimum tester performance.

6. Press and release the remote switch to deactivate the tester.

NOTE: For optimum visual smoke performance, deactivate the smoke flow and
allow the system pressure to drop. Allowing the smoke to exit small holes
at a low flow rate greatly enhances visibility.

7. Introduce smoke into the system for an additional 60 s. Continue introducing smoke at 15 s intervals, as
necessary.
8. Using a high-intensity white light, inspect the entire EVAP system path, and look for the source of the
leak indicated by the exiting smoke. Introduce smoke at 15 s intervals, as needed, until leak source is
identified.

Temperature Variation Instructions

The Concern

Ideal circumstances for conducting the EVAP flow meter test require equal temperatures between the nitrogen
gas and the vehicle EVAP system. Significant differences in temperature between them can result in a flow or
pressure change during testing, causing misleading results. Typically, the EEST is stored indoors,
approximately 21°C (70°F). Vehicles brought in for diagnosis may have an EVAP system at significantly
different temperatures.

For Example

NOTE: With no temperature difference between the nitrogen gas and EVAP system, the
resulting vehicle EVAP system pressure will remain stable at 3.2 kPa, 13 in. H2O
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

(0.5 PSI) once pressurized, providing no leaks are present.

When the EVAP flow meter tests are performed with significant differences in temperature between the
nitrogen gas and the vehicle EVAP system, the following results can occur:

 An increase in flow during the flow meter test can be caused by a vehicle's warm EVAP system cooling
down.
 A decrease in flow during the flow meter test can be caused by a vehicle's cool EVAP system warming
up.

The Solution

When working on a vehicle with significant temperature differences between the vehicle EVAP system and the
nitrogen gas, allow the vehicle EVAP system temperature to stabilize as close as possible to the temperature of

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the nitrogen gas before conducting the Flow Meter Test.

ELECTRONIC IGNITION SYSTEM DIAGNOSIS

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

This ignition system uses an ignition coil module. The engine control module (ECM) controls the spark events
by transmitting the timing pulses on the ignition control (IC) circuits to the cylinder ignition coils in firing order
sequence.

Diagnostic Aids

 An open/high resistance on the low reference circuit to the ignition coil may cause a misfire.
 An erratic or weak spark is considered a no spark condition.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

Electronic Ignition System Description

Electrical Information Reference

 Circuit Testing
 Connector Repairs
 Testing for Intermittent Conditions and Poor Connections
 Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Testing

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NOTE: Do not perform this diagnostic procedure unless you were sent here from a
misfire DTC or the Engine Cranks But Does Not Run diagnostic.

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K35 Ignition Coil
Module. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 5 ohms between the ground circuit terminal B and ground.
 If 5 ohms or greater

1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, repair the open/high resistance in the ground connection.

 If less than 5 ohms

3. Test for less than 5 ohms between the low reference circuit terminal C and ground.
 If 5 ohms or greater

1. Ignition OFF, disconnect the X2 harness connector at the K20 Engine Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, replace the K20 Engine Control Module.

 If less than 5 ohms

4. Ignition ON.
5. Verify a test lamp illuminates between the ignition circuit terminal A and ground.
 If the test lamp does not illuminate and the circuit fuse is good

1. Ignition OFF, remove the test lamp.

2. Test for less than 2 ohms in the ignition circuit end to end.
 If 2 ohms or greater, repair the open/high resistance in the circuit.

 If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 If the test lamp does not illuminate and the circuit fuse is open

NOTE: The ignition circuit may supply voltage to other components. Make
sure to test all circuits and components for a short to ground that
share the ignition circuit.

1. Ignition OFF, remove the test lamp, and disconnect all components on the circuit.
2. Test for infinite resistance between the ignition circuit and ground.
 If less than infinite resistance, repair the short to ground on the circuit.

 If infinite resistance

3. Replace the fuse, ignition ON.

4. Verify the fuse is good after connecting each of the components one at a time.

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 If the fuse opens, replace the component that opens the fuse when connected.

 If the fuse is good, all OK.

 If the test lamp illuminates

6. Replace the K35 Ignition Coil Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

 Ignition Coil Replacement

 Control Module References for engine control module replacement, programming, and setup.

INSPECTION/MAINTENANCE SYSTEM CHECK

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Diagnostic System Check - Vehicle for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

Several states require for a vehicle to pass on-board diagnostic (OBD) system tests and the
inspection/maintenance emission inspection in order to renew license plates. This is accomplished by viewing
the inspection/maintenance system status display on a scan tool. Using a scan tool, the technician can observe
the inspection/maintenance system status in order to verify that the vehicle meets the criteria that comply with
the local area requirements.

Condition for Updating the Inspection/Maintenance Emission System Status

Each system monitor requires at least one, and sometimes several, diagnostic tests. The result of each test is
reported by a diagnostic trouble code (DTC). A system monitor is complete when either all of the DTCs
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

composing the monitor have Run and Passed, or when any one of the DTCs comprising the monitor has
illuminated the malfunction indicator lamp (MIL). Once the system monitor is complete, the
inspection/maintenance system status display will indicate YES in the completed column.

For example, when the HO2S heater status indicates YES, either all of the oxygen sensor heater tests have
passed or one of the tests has illuminated the MIL. If the vehicle has two heated oxygen sensors, either both
heater circuit tests have passed or one of the heater circuit tests has illuminated the MIL. The
inspection/maintenance system status will indicate NO under the completed column when any of the required
tests for that system have not run. The following is a list of conditions that may set the inspection/maintenance
system status indicator to NO:

 The vehicle is new from the factory and has not yet been driven through the necessary drive conditions to
complete the tests.
 The battery has been disconnected or discharged below operating voltage.

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 The engine control module (ECM) power or ground has been interrupted.
 The ECM has been reprogrammed.
 The ECM DTCs have been cleared.

Monitored Emission Control Systems

The OBD II System monitors all emission control systems that are on-board. The OBD II regulations require
monitoring of the following:

 The air conditioning system

 The catalyst efficiency
 Comprehensive component monitoring, emission related inputs and outputs
 The evaporative emission (EVAP) system
 The fuel delivery system
 Heated catalyst monitoring
 Misfire monitoring
 The oxygen sensor system (HO2S)
 The oxygen sensor heater system (HO2S heater)

For the specific DTCs required for each system, refer to Inspection/Maintenance (I/M) System DTC Table.
Systems such as fuel delivery, misfire, and comprehensive components may not be listed in a system status list.
These tests run continuously and do not require an inspection/maintenance system status indicator.

Circuit/System Verification

Review the inspection/maintenance system DTC Table System Status indicators. All inspection/maintenance
system DTC Table system status indicators should report YES.

Circuit/System Testing
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

NOTE: Many DTC related repairs will instruct the technician to clear the DTC
information. Clearing the DTC will reset the inspection/maintenance
system DTC Table system status indicators to NO. Performing the
inspection/maintenance complete system set procedure will set each of
the inspection/maintenance system status indicators to YES.

1. Observe the Engine DTC information with a scan tool.

 If a DTC is set that may prevent the inspection/maintenance system status tests from completing,
diagnose that DTC before continuing. Refer to Inspection/Maintenance (I/M) System DTC
Table.
2. Review applicable service bulletins for software updates that may prevent the inspection/maintenance
system status tests from completing.
 If a control module reprogram or other repair is required, perform the. Inspection/Maintenance
Complete System Set Procedure

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3. Observe the inspection/maintenance system status indicators.
 If any inspection/maintenance system status indicators report NO, perform the
Inspection/Maintenance Complete System Set Procedure.

INSPECTION/MAINTENANCE COMPLETE SYSTEM SET PROCEDURE

Diagnostic Instructions

 Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
 Review Strategy Based Diagnosis for an overview of the diagnostic approach.
 Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Circuit/System Description

The purpose of the inspection/maintenance complete system set procedure is to satisfy the enable criteria
necessary to execute all of the inspection/maintenance readiness diagnostics and complete the trips for those
particular diagnostics. When all inspection/maintenance monitored diagnostic tests are completed, the
inspection/maintenance system status indicators are set to yes. Perform the inspection/maintenance complete
system set procedure if any inspection/maintenance system status indicators are set to NO.

Condition for Meeting a Cold Start

 The ignition voltage between 10-18 V.

 The barometric pressure (BARO) is more than 75 kPa (10.15 PSI).
 The engine coolant temperature (ECT) at start-up is greater than -5°C (23°F).
 The intake air temperature (IAT) at start-up is less than 40°C (104°F).
 The difference between the start-up IAT and ECT are within 3°C (5°F).
 The engine is OFF for greater than 6 h or the following conditions must be met:
 The start-up IAT minus start-up ECT 1 are within 12°C (22°F).

 The start-up ECT minus start-up IAT are within 50°C (90°F).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

 Fuel level is between 25-75%.

Circuit/System Verification

Review the inspection/maintenance system status indicators. All inspection/maintenance system status
indicators should report yes.

Inspection/Maintenance System Set Procedure

NOTE: Whenever the ignition is turned ON, ignition positive voltage is supplied to the
heated oxygen sensor (HO2S) heaters. After verifying the enable criteria, turn
OFF the ignition for approximately 5 minutes to allow the sensors to cool before
continuing with the test. Once the engine is started, do NOT turn the engine
OFF for the remaining portion of the set procedure.

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1. Ensure that the vehicle meets the conditions for a cold start listed above.
 If the Evaporative Emission (EVAP) inspection/maintenance system status indicator displays NO,
perform the EVAP Service Bay test if applicable.
2. Turn OFF all accessories; HVAC system, other electrical loads, including aftermarket/add-on equipment,
etc., and open the hood.
3. Set the vehicle parking brake and ensure the vehicle is in park for automatic transmission or neutral for
manual transmission.
4. Turn the ignition ON for 1 min.
5. Start and idle the engine for 5 min.
6. Run the engine for 6 min within the following conditions:
 Calculated air flow is between 9-30 g/s

 Engine speed is steady between 1 300-3 000 RPM

7. Apply and hold brake pedal, and shift to Drive for automatic, or apply clutch pedal for manual and
operate the vehicle within the following conditions for 2 min:
 Manifold Absolute Pressure (MAP) signal is greater than 12 g/s

 Engine speed is greater than 1 000 RPM

NOTE: Do NOT touch the accelerator pedal until told to do so. A change in throttle
position sensor angle or an increase in engine speed may invalidate this
portion of the test.

8. Release the accelerator pedal and shift the vehicle to Park for automatic, or Neutral and release clutch
pedal for manual, and allow the engine to idle for 2 min.
9. Close the hood, release the parking brake and drive vehicle at 90 km/h (55 MPH) for 2 min.
10. Release the accelerator pedal for at least 10 s. This will allow the vehicle to enter the deceleration fuel cut
off.
11. Safely stop the vehicle, with the engine in drive for automatic or neutral with the clutch pedal depressed
and parking brake applied for manual. Allow the vehicle to idle for 2 min.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

NOTE: Do NOT disturb the vehicle or turn ON the ignition until told to do so.
Disturbing the vehicle may invalidate this portion of the test.

12. Shift the vehicle to park for automatic and neutral for manual. Turn OFF the ignition and exit the vehicle.
Do NOT disturb the vehicle for 45 min.
13. Observe the Inspection/Maintenance System Status with a scan tool. All of the inspection/maintenance
System Status indicators should display YES.
 If the EVAP inspection/maintenance system status indicator displays NO, turn OFF the ignition,
ensure that the vehicle meets the conditions for a cold start, and repeat steps 6 through 11 three
more times, or until the EVAP inspection/maintenance system status indicator transitions to yes. If
the indicator continues to display NO, refer to the Inspection/Maintenance (I/M) System DTC
Table to identify the DTCs that did not run.
 If any of the inspection/maintenance system status indicators display NO, refer to the
Inspection/Maintenance (I/M) System DTC Table for the indicator which did not display yes.

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The inspection/maintenance system DTC table identifies the DTCs associated with each
inspection/maintenance system status Indicator.

INSPECTION/MAINTENANCE (I/M) SYSTEM DTC TABLE

Inspection/Maintenance (I/M) System DTC Table

System DTCs Required to Set System Status to YES
If an inspection/maintenance system status indicator did not update to yes during the
Inspection/Maintenance Complete System Set Procedure, review each indicator and reference this
table to determine each DTC associated with the inspection/maintenance system status indicator. Each
DTC listed below has specific conditions that must be met for the diagnostic to run. Included within the
conditions are additional DTCs which, if set, may inhibit the DTCs listed below from running. Reviewing
and operating the vehicle within the conditions for running for each DTC listed below will allow the
inspection/maintenance system status indicators to transition to yes.
Camshaft System DTC P0011 or P0014
Catalyst Monitor DTC P0420
Evaporative Emission (EVAP)  DTC P0442

DTC P0446
 DTC P0455

Fuel System DTC P219A

Oxygen Sensor  DTC P0131, P0132, P0134, P0137, P0138, or
P0140
 DTC P0133, P013A, P013B, P013E, P013F,
P015A, P015B, P2270, or P2271
Oxygen Sensor Heater DTC P0030-P0032, P0036-P0038, P0053, P0054, P0135,
or P0141

FUEL PRESSURE MEASUREMENT

Special Tools
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

EN 34730-91 Pressure Tester

For equivalent regional tools, refer to Special Tools

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Fig. 1: View Of Fuel Pressure Tester
Courtesy of GENERAL MOTORS COMPANY

WARNING: Gasoline or gasoline vapors are highly flammable. A fire could occur
if an ignition source is present. Never drain or store gasoline or
diesel fuel in an open container, due to the possibility of fire or
explosion. Have a dry chemical (Class B) fire extinguisher nearby.

WARNING: Remove the fuel tank cap and relieve the fuel system pressure
before servicing the fuel system in order to reduce the risk of
personal injury. After you relieve the fuel system pressure, a small
amount of fuel may be released when servicing the fuel lines, the
fuel injection pump, or the connections. In order to reduce the risk of
personal injury, cover the fuel system components with a shop towel
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Diagnostic Information and Procedures - Cruze

before disconnection. This will catch any fuel that may leak out.
Place the towel in an approved container when the disconnection is
complete.

1. Remove the protective cap from the test connection.

2. Attach the EN 34730-91 tester (1) to the test connection.
3. Start the engine.
 Bleed the pressure tester at idling speed.

 Collect the exiting fuel in a suitable container.

 Read the fuel pressure from the pressure gauge.

CAUTION: Clean all of the following areas before performing any

disconnections in order to avoid possible contamination in the

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system:

 The fuel pipe connections

 The hose connections
 The areas surrounding the connections

4. Detach the pressure gauge EN 34730-91 tester from the test connection.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

REPAIR INSTRUCTIONS
ENGINE CONTROL MODULE REPLACEMENT

Removal Procedure

CAUTION:  Turn the ignition OFF when installing or removing the control module
connectors and disconnecting or reconnecting the power to the
control module (battery cable, powertrain control module
(PCM)/engine control module (ECM)/transaxle control module (TCM)

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pigtail, control module fuse, jumper cables, etc.) in order to prevent
internal control module damage.
 Control module damage may result when the metal case contacts
battery voltage. DO NOT contact the control module metal case with
battery voltage when servicing a control module, using battery
booster cables, or when charging the vehicle battery.
 In order to prevent any possible electrostatic discharge damage to
the control module, do no touch the connector pins or the soldered
components on the circuit board.
 Remove any debris from around the control module connector
surfaces before servicing the control module. Inspect the control
module connector gaskets when diagnosing or replacing the control
module. Ensure that the gaskets are installed correctly. The gaskets
prevent contaminant intrusion into the control module.
 The replacement control module must be programmed.

NOTE: It is necessary to record the engine oil life percentage remaining. Use the scan
tool to reset the engine oil life remaining back to the original percentage
recorded.

NOTE: It is necessary to record the remaining automatic transmission fluid life. If the
replacement module is not programmed with the remaining automatic
transmission fluid life, the automatic transmission fluid life will default to 100
percent. If the replacement module is not programmed with the remaining
automatic transmission fluid life, the automatic transmission fluid will need to
be changed at 83000 km (50.000 mi) from the last automatic transmission fluid
change.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 1: Engine Control Module Components
Courtesy of GENERAL MOTORS COMPANY

1. Prepare the engine control module for the replacement. Refer to Control Module References .
2. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
3. Disconnect battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
4. Disconnect the 2 wiring harness plug (2) from the engine control module (3).
5. Unclip the engine control module bracket (4) from the battery tray.
6. Remove the 4 nuts (1).
7. Remove the engine control module (3) from the engine control module bracket (4).

Installation Procedure
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 2: Engine Control Module Components
Courtesy of GENERAL MOTORS COMPANY

1. Install the engine control module (3) to the engine control module bracket (4).

CAUTION: Refer to Fastener Caution .

2. Install the 4 nuts (1) and tighten to 9 N.m (80 lb in).

3. Clip the engine control module bracket (4) to the battery tray.
4. Connect the 2 wiring harness plug (2) to the engine control module (3).
5. Connect battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
6. Program the ECM. Refer to Control Module References .

CRANKSHAFT POSITION SYSTEM VARIATION LEARN

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

NOTE: The crankshaft position sensor system variation learn procedure is required
when the following service procedures have been performed, regardless of
whether DTC P0315 is set:

 Engine replacement
 Engine control module (ECM) replacement
 Crankshaft damper replacement
 Crankshaft replacement
 Crankshaft Position Sensor Replacement
 Any engine repairs which disturb the crankshaft to crankshaft position
sensor relationship.

NOTE: The scan tool monitors certain component signals to determine if all the

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conditions are met to continue with the crankshaft position sensor system
variation learn procedure. The scan tool only displays the condition that inhibits
the procedure. The scan tool monitors the following components:

 Crankshaft Position Sensor activity - If there is a crankshaft position

sensor condition, refer to the applicable DTC that set.
 Camshaft position signal activity - If there is a camshaft position sensor
signal condition, refer to the applicable DTC that set.
 Engine coolant temperature (ECT) - If the engine coolant temperature is
not warm enough, idle the engine until the engine coolant temperature
reaches the correct temperature.

1. Install a scan tool.

2. Monitor the ECM for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to
Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
3. With a scan tool, select the Crankshaft Position System Variation Learn procedure and perform the
following:
1. Observe the fuel cut-off for the applicable engine.
2. Block the drive wheels.
3. Set the parking brake.
4. Place the vehicles transmission in Park or Neutral.
5. Turn the air conditioning (A/C) OFF.
6. Cycle the ignition from OFF to ON.
7. Apply and hold the brake pedal for the duration of the procedure.
8. Start and idle the engine.
9. Accelerate to wide open throttle (WOT). The engine should not accelerate beyond the calibrated
fuel cut-off RPM value noted in step 3.1. Release the throttle immediately if the value is exceeded.

NOTE: While the learn procedure is in progress, release the throttle

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

immediately when the engine starts to decelerate. The engine control

is returned to the operator and the engine responds to throttle
position after the learn procedure is complete.

10. Release the throttle when fuel cut-off occurs.

11. Accelerate to wide open throttle (WOT). The engine should not accelerate beyond the calibrated
fuel cut-off RPM value noted in step 3.1. Release the throttle immediately if the value is exceeded.

NOTE: While the learn procedure is in progress, release the throttle immediately
when the engine starts to decelerate. The engine control is returned to the
operator and the engine responds to throttle position after the learn
procedure is complete.

4. The scan tool displays Learn Status: Learned this Ignition. If the scan tool indicates that DTC P0315 ran

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and passed, the crankshaft position sensor variation learn procedure is complete. If the scan tool indicates
DTC P0315 failed or did not run, refer to DTC P0315 . If any other DTCs set, refer to Diagnostic
Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
5. Turn OFF the ignition for 30 s after the learn procedure is completed successfully.

ENGINE COOLANT TEMPERATURE SENSOR REPLACEMENT (RADIATOR)

Fig. 3: Engine Coolant Temperature Sensor (Radiator) Side

Courtesy of GENERAL MOTORS COMPANY

Engine Coolant Temperature Sensor Replacement (Radiator)

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Callout Component Name

Preliminary Procedures
Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) , Cooling System
Draining and Filling (GE-47716 Fill) .
1 Retaining Clamp
Engine Coolant Temperature Sensor
2 Procedure
Disconnect the electrical connector.

ENGINE COOLANT TEMPERATURE SENSOR REPLACEMENT (WATER OUTLET)

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Fig. 4: Engine Coolant Temperature Sensor (Water Outlet)
Courtesy of GENERAL MOTORS COMPANY

Engine Coolant Temperature Sensor Replacement (Water Outlet)

Callout Component Name
WARNING:
Allow sufficient time for the engine to cool before removing the ECT sensor. A hot engine may cause
an excessive coolant loss or a personal injury.

Preliminary Procedures Drain the cooling system. Refer to Cooling System Draining and Filling
(Static Fill) , Cooling System Draining and Filling (GE-47716 Fill) .
1 Engine Coolant Temperature Sensor Retainer Clip

Engine Coolant Temperature Sensor

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Procedure
2
Disconnect electrical connector.

MASS AIRFLOW SENSOR REPLACEMENT

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Fig. 5: Mass Airflow Sensor
Courtesy of GENERAL MOTORS COMPANY

Mass Airflow Sensor Replacement

Callout Component Name
1 Mass Air Flow Sensor Bolt (Qty: 2)
Mass Air Flow Sensor

Procedure
2 1. Disconnect electrical connector
2. After replacement of mass air flow sensor, use a scan tool to perform
the learn functions. Refer to K20 Engine Control Module:
Programming and Setup .
3 Mass Air Flow Sensor Seal Ring

INTAKE AIR PRESSURE AND TEMPERATURE SENSOR REPLACEMENT

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 6: Intake Air Pressure And Temperature Sensor
Courtesy of GENERAL MOTORS COMPANY

Intake Air Pressure and Temperature Sensor Replacement

Callout Component Name
Intake Air Temperature and Pressure Sensor Bolt
1 CAUTION:
Refer to Fastener Caution .
Intake Air Temperature and Pressure Sensor
2 Procedure
Disconnect the electrical connector.

MANIFOLD ABSOLUTE PRESSURE SENSOR REPLACEMENT

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 7: Manifold Absolute Pressure Sensor
Courtesy of GENERAL MOTORS COMPANY

Manifold Absolute Pressure Sensor Replacement

Callout Component Name
1 Manifold Absolute Pressure Sensor Bolt
Manifold Absolute Pressure Sensor

Procedure
2 1. Disconnect the electrical connector.
2. After replacement of the manifold absolute pressure sensor use a scan
tool to speed up the learn process. Refer to K20 Engine Control
Module: Programming and Setup .

TURBOCHARGER WASTEGATE REGULATOR SOLENOID VALVE REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 8: Turbocharger Wastegate Regulator Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY

Turbocharger Wastegate Regulator Solenoid Valve Replacement

Callout Component Name
Preliminary Procedure
Disconnect the turbocharger wastegate regulator solenoid valve electrical connector.
Turbocharger Wastegate Regulator Solenoid Valve Vacuum Hose
1
(Qty: 3)
2 Turbocharger Wastegate Regulator Solenoid Valve Bolt
3 Turbocharger Wastegate Regulator Solenoid Valve Bolt Washer
4 Turbocharger Wastegate Regulator Solenoid Valve

HEATED OXYGEN SENSOR REPLACEMENT - SENSOR 1

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 9: Heated Oxygen Sensor - Sensor 1
Courtesy of GENERAL MOTORS COMPANY

Heated Oxygen Sensor Replacement - Sensor 1

Callout Component Name
WARNING:
In order to avoid being burned, do not service the exhaust system while it is still hot. Service the
system when it is cool.

Preliminary Procedure Disconnect battery negative cable. Refer to Battery Negative Cable
Disconnection and Connection .
Heated Oxygen Sensor 1

CAUTION:
Refer to Fastener Caution .

Procedure
1
1. Remove the wiring harness from retainer clip.
2. Disconnect electrical connector.
3. After replacement of the heated oxygen sensor, use a scan tool to
speed up learn functions. Refer to K20 Engine Control Module:
Programming and Setup .
4. If reusing the heated oxygen sensor, coat the thread with assembly
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

paste.

Tighten
42 N.m(31 lb ft)
Special Tools
EN-48259 Installer/Remover
For equivalent regional tools, refer to Special Tools

HEATED OXYGEN SENSOR REPLACEMENT - SENSOR 2

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Fig. 10: Heated Oxygen Sensor - Sensor 2
Courtesy of GENERAL MOTORS COMPANY

Heated Oxygen Sensor Replacement - Sensor 2

Callout Component Name
WARNING:
In order to avoid being burned, do not service the exhaust system while it is still hot. Service the
system when it is cool.

Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Heated Oxygen Sensor 2

CAUTION:
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Refer to Fastener Caution .

Procedure

1. Disconnect electrical connector.

2. After replacement of the heated oxygen sensor, use a scan tool to
speed up learn functions. Refer to K20 Engine Control Module:
Programming and Setup .
1 3. If reusing the heated oxygen sensor, coat the thread with assembly
paste.

Tighten
42 N.m(31 lb ft)

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Special Tools
EN-48259 Installer/Remover
For equivalent regional tools, refer to Special Tools

ENGINE OIL PRESSURE INDICATOR SWITCH REPLACEMENT

Fig. 11: Engine Oil Pressure Indicator Switch

Courtesy of GENERAL MOTORS COMPANY

Engine Oil Pressure Indicator Switch Replacement

Callout Component Name
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Engine Oil Pressure Indicator Switch

CAUTION:
Refer to Fastener Caution .

Procedure
1 1. Place collecting basin underneath.
2. Disconnect the electrical connector.
3. Check engine oil level after replacement.

Tighten
20 N.m (15 lb ft)

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2 Engine Oil Pressure Indicator Switch Seal Ring

ACCELERATOR PEDAL POSITION SENSOR REPLACEMENT

Fig. 12: Accelerator Pedal Position Sensor & Fastener

Courtesy of GENERAL MOTORS COMPANY

Accelerator Pedal Position Sensor Replacement

Callout Component Name
Accelerator Pedal Position Sensor Fastener
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

CAUTION:
Refer to Fastener Caution .

1
Tighten
10 N.m (89 lb in)
Accelerator Pedal Position Sensor
2 Procedure
Disconnect electrical connector.

THROTTLE BODY ASSEMBLY REPLACEMENT

Removal Procedure

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Fig. 13: Throttle Body Wiring Harness Plug

Courtesy of GENERAL MOTORS COMPANY
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

1. Disconnect the throttle body wiring harness plug (1).

2. Remove the charge air cooler outlet air hose from the throttle body. Refer to Charge Air Cooler Outlet
Air Hose Replacement (Automatic Transmission), Charge Air Cooler Outlet Air Hose Replacement
(Manual Transmission).

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Fig. 14: Throttle Body
Courtesy of GENERAL MOTORS COMPANY

3. Remove the 4 throttle body bolts (3).

4. Remove the throttle body (2) along with the throttle body seal ring (1).

Installation Procedure
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 15: Throttle Body
Courtesy of GENERAL MOTORS COMPANY

1. Install the throttle body (2) along with a NEW throttle body seal ring (1).

CAUTION: Refer to Fastener Caution .

2. Install the 4 throttle body bolts (3) and tighten to 8 N.m (71 lb in).
3. Install the charge air cooler outlet air hose to the throttle body. Refer to Charge Air Cooler Outlet Air
Hose Replacement (Automatic Transmission), Charge Air Cooler Outlet Air Hose Replacement
(Manual Transmission).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 16: Throttle Body Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

4. Connect the throttle body wiring harness plug (1).

5. Perform the throttle/idle learn procedure. Refer to Q38 Throttle Body: Throttle/Idle Learn.

THROTTLE BODY INSPECTION AND CLEANING

NOTE: Over extended time and mileage, deposits may accumulate on the back of the
throttle valve plate. The source of the deposit is exhaust gas. Typically these
deposits pose no problem. Occasionally the deposit may accumulate to a point
where perceived pedal effort or throttle valve movement is effected. This
procedure should not be performed on vehicles with mileage under 80, 450 km
(50, 000 mi).

1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

WARNING: Turn OFF the ignition before inserting fingers into the throttle bore.
Unexpected movement of the throttle blade could cause personal
injury.

CAUTION: Do not insert any tools into the throttle body bore in order to avoid
damage to the throttle valve plate.

2. Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle
valve in order to inspect all surfaces.

CAUTION: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This
solvent may damage fuel system components.

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3. Clean the throttle body bore and the throttle valve plate using a clean shop towel with an appropriate
cleaner.
4. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.

FUEL PRESSURE RELIEF

Special Tools

EN-34730-91 Pressure Tester

For equivalent regional tools, refer to Special Tools .

WARNING: Gasoline or gasoline vapors are highly flammable. A fire could occur
if an ignition source is present. Never drain or store gasoline or
diesel fuel in an open container, due to the possibility of fire or
explosion. Have a dry chemical (Class B) fire extinguisher nearby.

WARNING: Relieve the fuel system pressure before servicing fuel system
components in order to reduce the risk of fire and personal injury.

After relieving the system pressure, a small amount of fuel may be

released when servicing the fuel lines or connections. In order to
reduce the chance of personal injury, cover the regulator and the
fuel line fittings with a shop towel before disconnecting. This will
catch any fuel that may leak out. Place the towel in an approved
container when the disconnection is complete.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 17: Fuel Injector Rail Cap
Courtesy of GENERAL MOTORS COMPANY

1. Remove the fuel injector rail cap (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 18: Pressure Tester
Courtesy of GENERAL MOTORS COMPANY

2. Relieve the fuel pressure. Use EN-34730-91 pressure tester (1).

FUEL TANK DRAINING

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

NOTE: The fuel tank must be drained with a suitable, commercially-available fuel
removal unit and suction hose - follow safety regulations and national
legislation. The fuel tank is fitted with a refill limit float valve. This is
located on the filler neck in the fuel tank. To prevent damaging the refill
limit float valve, a suitable suction hose must be used. In the presence of
fuel vapors or escaping fuel - observe safety regulations and national
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

legislation. Store drained fuel in a suitable, sealable container.

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and
Connection .
2. Remove the fuel tank filler cap.
3. Insert a suitable suction hose into the fuel tank filler pipe.
4. Attach a suitable suction hose to the hose used with the hand or air operated pump devise.
5. Using a hand or air operated pump drain as much fuel from the tank as possible.

FUEL TANK REPLACEMENT

Removal Procedure

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1. Open the hood.
2. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection .
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
4. Remove the right rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
5. Remove the rear wheelhouse panel liner. Refer to Rear Wheelhouse Liner Replacement .
6. Drain the fuel tank. Refer to Fuel Tank Draining.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 19: Fuel Pressure Sensor Wiring Harness Plug, Fuel Tank Vent Pipe, Fuel Feed Pipe
Connector And Fuel Tank Vent Pipe Connector
Courtesy of GENERAL MOTORS COMPANY

7. Disconnect the fuel pressure sensor wiring harness plug (2).

8. Disconnect the fuel feed pipe connector (1) from the fuel feed pipe. Refer to Plastic Collar Quick
Connect Fitting Service.
9. Disconnect the fuel tank vent pipe connector (3) from the fuel tank vent pipe (3). Refer to Plastic Collar
Quick Connect Fitting Service.
10. Install suitable caps the to the fuel pipes.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 20: Fuel Tank Wiring Harness Inline Connector
Courtesy of GENERAL MOTORS COMPANY

WARNING: Do not breathe the air through the EVAP component tubes or hoses.
The fuel vapors inside the EVAP components may cause personal
injury.

11. Loosen the clamp (5).

12. Remove the fuel tank filler hose (3) from the fuel tank filler pipe.
13. Disconnect the fuel tank filler vent pipe connector (4) from the fuel tank filler vent pipe. Refer to Plastic
Collar Quick Connect Fitting Service.
14. Plug the fuel tank filler vent pipe with a suitable cap.
15. Disconnect the fuel tank wiring harness inline connector (1) and unclip the wiring harness from 2 retainer
clips (2).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 21: Fuel Tank Straps
Courtesy of GENERAL MOTORS COMPANY

WARNING: To help avoid personal injury, always use jack stands when you are
working on or under any vehicle that is supported only by a jack.

CAUTION: When you are jacking or lifting a vehicle at the frame side rails or
other prescribed lift points, be certain that the lift pads do not contact
the catalytic converter, the brake pipes or the fuel lines. If such
contact occurs, vehicle damage or unsatisfactory vehicle
performance may result.

16. Place a suitable adjustable jack under the fuel tank.

17. Remove the 2 fuel tank strap bolts (2).
18. Remove the 2 fuel tank straps (1).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

NOTE: Second technician required.

NOTE: Retract the jack.

19. Remove the fuel tank.

Disassemble Procedure

1. Remove the fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement.

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Fig. 22: Evaporative Emission Canister
Courtesy of GENERAL MOTORS COMPANY

WARNING: Always wear safety goggles when working with fuel in order to
protect the eyes from fuel splash.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

2. Disconnect the fuel tank vent pipe (2).

3. Disconnect the evaporative emission canister wiring harness plug (3).
4. Remove the evaporative emission canister (1) from the evaporative emission canister bracket by releasing
tab and lifting it upwards.
5. Remove the fuel tank baffles. Refer to Fuel Tank Baffle Replacement.

Assemble Procedure

1. Install the fuel tank baffles. Refer to Fuel Tank Baffle Replacement.

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Fig. 23: Evaporative Emission Canister
Courtesy of GENERAL MOTORS COMPANY

2. Install the evaporative emission canister (1) to the evaporative emission canister bracket.
3. Connect the evaporative emission canister wiring harness plug (3).
4. Connect the fuel tank vent pipe (2).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

5. Install the fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement.

Installation Procedure

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Fig. 24: Fuel Tank Straps
Courtesy of GENERAL MOTORS COMPANY

NOTE: Second technician required.

NOTE: Extend the jack.

1. Install the fuel tank.

2. Install the 2 fuel tank straps (1).

CAUTION: Refer to Fastener Caution .

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

3. Install the 2 fuel tank strap bolts (2) and tighten to 22 N.m (16 lb ft).

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Fig. 25: Fuel Tank Wiring Harness Inline Connector
Courtesy of GENERAL MOTORS COMPANY

4. Install the fuel tank filler hose (3) to the fuel tank filler pipe.
5. Tighten the clamp (5).
6. Connect the fuel tank filler vent pipe connector (4) to the fuel tank filler vent pipe. Refer to Plastic
Collar Quick Connect Fitting Service.
7. Connect the fuel tank wiring harness inline connector (1) and clip in the wiring harness to 2 retainer clips
(2).
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 26: Fuel Pressure Sensor Wiring Harness Plug, Fuel Tank Vent Pipe, Fuel Feed Pipe
Connector And Fuel Tank Vent Pipe Connector
Courtesy of GENERAL MOTORS COMPANY

8. Connect the fuel tank vent pipe connector (3) to the fuel tank vent pipe (3). Refer to Plastic Collar Quick
Connect Fitting Service.
9. Connect the fuel feed pipe connector (1) to the fuel feed pipe. Refer to Plastic Collar Quick Connect
Fitting Service.
10. Connect the fuel pressure sensor wiring harness plug (2).
11. Install the rear wheel house panel liner. Refer to Rear Wheelhouse Liner Replacement .
12. Install the right rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
13. Lower the vehicle.
14. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection .

FUEL TANK BAFFLE REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Removal Procedure

WARNING: Refer to Fuel Vapors in Evaporative Emission Components Warning .

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

WARNING: Refer to Safety Goggles and Fuel Warning .

1. Remove the fuel tank. Refer to Fuel Tank Replacement.

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2. Place the fuel tank onto a workbench.
3. Remove the fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Fig. 27: Fuel Tank Baffle And Lug

Courtesy of GENERAL MOTORS COMPANY

4. Press the fuel tank baffle (1) completely down as shown in the picture.
5. Push the lug (2) toward the baffle and hold it.
6. Release tension from the fuel tank baffle (1) until the lug (2) engages safely.

Fig. 28: Fuel Tank Baffles

Courtesy of GENERAL MOTORS COMPANY
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7. Remove the baffles (1) one by one.
8. Repeat steps 5 to 8 to remove the other baffle.

Installation Procedure
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 29: Fuel Tank Baffle And Lugs
Courtesy of GENERAL MOTORS COMPANY

NOTE: Perform the steps 1-3 only when the fuel tank baffles are not transferred
from the OLD to the NEW tank.

1. Tension the fuel tank baffle (1) completely by pressing it down.

2. Push the lug (2) toward the baffle and hold it.
3. Release tension from the fuel tank baffle (1) until the lug (2) engages safely.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 30: Fuel Tank Baffles
Courtesy of GENERAL MOTORS COMPANY

4. Install the baffles (1) one by one.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 31: Fuel Tank Baffle Lug
Courtesy of GENERAL MOTORS COMPANY

5. Press the fuel tank baffle together until the lug (1) becomes unlocked.
6. Release tension slowly from the fuel tank baffle and let the baffle engage safely in the installation site.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 32: Fuel Tank Installation Sites
Courtesy of GENERAL MOTORS COMPANY

7. Check the proper seat of the fuel tank baffle at the fuel tank installation sites (1). Use a mirror if
necessary.
8. Repeat steps 1 to 7 to install the other baffle.
9. Install the fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement.
10. Install the fuel tank. Refer to Fuel Tank Replacement.

FUEL TANK FILLER PIPE REPLACEMENT

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 33: Fuel Tank Filler Pipe
Courtesy of GENERAL MOTORS COMPANY

Fuel Tank Filler Pipe Replacement

Callout Component Name
WARNING:
Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present.
Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or
explosion. Have a dry chemical (Class B) fire extinguisher nearby.

Preliminary Procedure

1. Disconnect battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
2. Remove the fuel tank filler pipe housing. Refer to Fuel Tank Filler Pipe Housing Replacement .
3. Drain the fuel tank. Refer to Fuel Tank Draining.
Fuel Tank Filler Pipe Bracket Bolt

CAUTION:
Refer to Fastener Caution .
1

Tighten
9 N.m (80 lb in)
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

2 Lower Recirculation Tube Quick Release Fitting

3 Fuel Tank Filler Pipe Clamp
Fuel Tank Filler Pipe Ground Bolt
4 Tighten
9 N.m (80 lb in)
5 Fuel Tank Filler Pipe

FUEL FEED PIPE REPLACEMENT

Removal Procedure

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

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1. Open the hood.
2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
3. Relieve the fuel pressure. Refer to Fuel Pressure Relief.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 34: Fuel Feed Pipe
Courtesy of GENERAL MOTORS COMPANY

4. Disconnect the fuel feed pipe connector (3) from fuel injector rail. Refer to Metal Collar Quick Connect
Fitting Service.
5. Unclip the fuel feed pipe (1) from the retainer clip (4).
6. Close the fuel feed pipe connector with a suitable cap.
7. Unclip the fuel feed pipe from the bulk head retainer clip (2).
8. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 35: Front Exhaust Hanger Bracket And Bolt
Courtesy of GENERAL MOTORS COMPANY

9. Remove and DISCARD the exhaust front hanger bracket bolt (3).
10. Remove and DISCARD the frame reinforcement bolt (2).
11. Loosen the drivetrain and front suspension frame bolt (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 36: Right Frame Reinforcement
Courtesy of GENERAL MOTORS COMPANY

12. Rotate the right frame reinforcement (1) to a position shown to get access to the fuel pipes.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 37: Fuel Feed Pipe And Clips
Courtesy of GENERAL MOTORS COMPANY

13. Open the 4 fuel pipe clips (2).

14. Remove the fuel feed pipe (1) from lower bulkhead and underbody.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 38: Fuel Tank Feed Pipe Connector
Courtesy of GENERAL MOTORS COMPANY

15. Disconnect the fuel tank feed pipe connector (1) from the fuel feed pipe. Refer to Plastic Collar Quick
Connect Fitting Service.
16. Close the fuel feed pipe and fuel tank feed pipe with suitable caps.
17. Disconnect the fuel pressure sensor wiring harness plug (2).
18. Open the rear fuel pipe clip and remove the fuel feed pipe.

Installation Procedure

1. Remove the caps from fuel feed tank pipe and fuel feed pipe.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 39: Fuel Tank Feed Pipe Connector
Courtesy of GENERAL MOTORS COMPANY

2. Install the fuel feed pipe and secure with the rear fuel pipe clip.
3. Connect the fuel tank feed pipe connector (1) to the fuel feed pipe. Refer to Plastic Collar Quick
Connect Fitting Service.
4. Connect the fuel pressure sensor wiring harness plug (2).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 40: Fuel Feed Pipe And Clips
Courtesy of GENERAL MOTORS COMPANY

5. Install the fuel feed pipe (1) to lower bulkhead and underbody.
6. Close the 4 fuel pipe clips (2).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 41: Front Exhaust Hanger Bracket And Bolt
Courtesy of GENERAL MOTORS COMPANY

7. Rotate the right frame reinforcement to its original position.

8. Install the exhaust front hanger bracket bolts (3).
9. Install the frame reinforcement bolt (2).

CAUTION: Refer to Fastener Caution .

CAUTION: Refer to Torque-to-Yield Fastener Caution .

10. Tighten the NEW exhaust front hanger bracket bolt (3) to 22 Y (16 lb ft).
11. Tighten the NEW frame reinforcement bolt (2) to 60 Y (44 lb ft).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

12. Tighten the drivetrain and front suspension frame bolt (1) to 160 Y (118 lb ft).
13. Lower the vehicle.

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Fig. 42: Fuel Feed Pipe
Courtesy of GENERAL MOTORS COMPANY

14. Clip the fuel feed pipe to the bulk head retainer clip (2).
15. Clip the fuel feed pipe (1) to the retainer clip (4).
16. Connect the fuel feed pipe connector (3) to the fuel injector rail. Refer to Plastic Collar Quick Connect
Fitting Service.
17. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
18. Close the hood.

FUEL TANK FUEL PUMP MODULE REPLACEMENT

Special Tools
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

CH-45722 Fuel Sender Lock Ring Wrench

For equivalent regional tools, refer to Special Tools .

Removal Procedure

1. Remove the fuel tank. Refer to Fuel Tank Replacement.

Fig. 43: Fuel Tank Fuel Pump Module, Fuel Tank Vent Pipe And Fuel Feed Pipe cardiagn.com
Courtesy of GENERAL MOTORS COMPANY

2. Disconnect the fuel tank vent pipe (1) and the fuel feed pipe (4) from the fuel tank fuel pump module (3).
3. Disconnect the fuel tank fuel pump module wiring harness (2) from the fuel tank fuel pump module (3).
4. Close the fuel feed pipe and the fuel tank vent feed pipe with suitable caps.

NOTE: Do NOT use impact tools. Significant force will be required to release the
lock ring. The use of a hammer and screwdriver is not recommended.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Secure the fuel tank in order to prevent fuel tank rotation.

5. Using the CH-45722 wrench and a long breaker-bar, rotate the fuel pump module lock ring in a
counterclockwise direction in order to unlock the lock ring.

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Fig. 44: Fuel Tank Fuel Pump Module
Courtesy of GENERAL MOTORS COMPANY

6. Remove fuel tank fuel pump module lock ring (1).

7. Remove the fuel tank fuel pump module (2).

NOTE: Lift the fuel tank fuel pump module up slightly.

8. Remove and discard the fuel pump module seal (3).

9. Remove the fuel level sensor from the fuel tank fuel pump module. Refer to Fuel Level Sensor
Replacement.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Installation Procedure

1. Install the fuel level sensor to the fuel tank fuel pump module. Refer to Fuel Level Sensor Replacement.

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Fig. 45: Fuel Tank Fuel Pump Module
Courtesy of GENERAL MOTORS COMPANY

2. Install a NEW fuel tank module seal (3).

3. Install the fuel tank fuel pump module (2).
4. Install the fuel pump module lock ring (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 46: Fuel Tank Fuel Pump Module Alignment Mark
Courtesy of GENERAL MOTORS COMPANY

5. Make sure that the fuel tank fuel pump module (2) align with the fuel tank line (1).

NOTE: Do NOT use impact tools. Significant force will be required to release the
lock ring. The use of a hammer and screwdriver is not recommended.
Secure the fuel tank in order to prevent fuel tank rotation.

6. Using the CH-45722 wrench and a long breaker-bar, rotate the lock ring in a clockwise direction in order
to lock the lock ring.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 47: Fuel Tank Fuel Pump Module, Fuel Tank Vent Pipe And Fuel Feed Pipe
Courtesy of GENERAL MOTORS COMPANY

7. Connect the fuel tank fuel pump module wiring harness (2) to the fuel tank fuel pump module (3).
8. Remove the caps from the fuel feed pipe and the fuel tank vent feed pipe.
9. Connect the fuel tank vent pipe (1) and the fuel feed pipe (4) to the fuel tank fuel pump module (3).
10. Install the fuel tank. Refer to Fuel Tank Replacement.

FUEL TANK PRESSURE SENSOR REPLACEMENT

Removal Procedure

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
2. Remove the fuel tank. Refer to Fuel Tank Replacement.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 48: Fuel Tank Pressure Sensor, Wiring Harness Plug And Pump Module Clip
Courtesy of GENERAL MOTORS COMPANY

3. Disconnect the fuel tank pressure sensor wiring harness plug (2).
4. Unclip the fuel tank pressure sensor (3) from the fuel tank pump module clip (1).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 49: Fuel Tank Pressure Sensor, Wiring Harness Plug And Pump Module Clip
Courtesy of GENERAL MOTORS COMPANY

1. Clip the fuel tank pressure sensor (3) to the fuel tank pump module clip (1).
2. Connect the fuel tank pressure sensor wiring harness plug (2).
3. Install the fuel tank. Refer to Fuel Tank Replacement.
4. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

FUEL PUMP FLOW CONTROL MODULE REPLACEMENT

Removal Procedure

1. Open the rear lid.

2. Remove the rear compartment side trim - right side. Refer to Rear Compartment Side Trim
Replacement - Right Side .
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 50: Fuel Pump Flow Control Module
Courtesy of GENERAL MOTORS COMPANY

3. Remove the fuel pump flow control module wiring harness plug (2) from the fuel pump flow control
module (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 51: Fuel Pump Flow Control Module
Courtesy of GENERAL MOTORS COMPANY

4. Unclip the fuel pump flow control module bracket clip (1) from the fuel pump flow control module (3).
5. Unclip the 2 fuel pump flow control module clips (4) from the fuel pump flow control module bracket
(2).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 52: Fuel Pump Flow Control Module
Courtesy of GENERAL MOTORS COMPANY

1. Clip the 2 fuel pump flow control module clips (4) to the fuel pump flow control module bracket (2).
2. Clip the fuel pump flow control module (3) to the fuel pump flow control module bracket clip (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 53: Fuel Pump Flow Control Module
Courtesy of GENERAL MOTORS COMPANY

3. Plug the fuel pump flow control module wiring harness plug (2) to the fuel pump flow control module
(1).
4. Install the rear compartment side trim - right side. Refer to Rear Compartment Side Trim Replacement
- Right Side .
5. Close the rear lid.
6. Program the control module. Refer to Fuel Pump Control Module Programming and Setup

FUEL LEVEL SENSOR REPLACEMENT

Removal Procedure

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

WARNING: Refer to Safety Goggles and Fuel Warning .

CAUTION: Use care while handling the fuel sender to prevent damage and incorrect
fuel level readings.

1. Remove the fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement.

cardiagn.com
Fig. 54: Fuel Level Sensor And Components
Courtesy of GENERAL MOTORS COMPANY

2. Disconnect the fuel level sensor wiring harness plug (2) from the fuel tank fuel pump module.
3. Unclip the 2 fuel level sensor retainer pins (4) from the fuel level sensor retainer pin holes (3).
4. Remove the fuel level sensor (1) from the fuel tank fuel pump module.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Installation Procedure

cardiagn.com
Fig. 55: Fuel Level Sensor And Components
Courtesy of GENERAL MOTORS COMPANY

1. Install the fuel level sensor (1) to the fuel tank fuel pump module.
2. The fuel level sensor retainer pins (4) must engage audible in the fuel level sensor retainer pin holes (3).
3. Connect the fuel level sensor wiring harness plug (2) to the fuel tank fuel pump module.
4. Install the fuel tank fuel pump module. Refer to Fuel Tank Fuel Pump Module Replacement.

FUEL PRESSURE SENSOR REPLACEMENT

Removal Procedure

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

WARNING: Refer to Safety Goggles and Fuel Warning .

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.

2. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

cardiagn.com
Fig. 56: Fuel Pressure Sensor
Courtesy of GENERAL MOTORS COMPANY

4. Remove the fuel pressure sensor wiring harness plug (2) from the fuel pressure sensor (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 57: Fuel Pressure Sensor And Fuel Pressure Relief Valve
Courtesy of GENERAL MOTORS COMPANY

5. Place a appropriate container/drain pan to catch excess fuel.

6. Remove the fuel pressure sensor (1) from the fuel pressure line (2).
7. Remove the fuel pressure sensor seal ring (3).

Installation Procedure
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 58: Fuel Pressure Sensor And Fuel Pressure Relief Valve
Courtesy of GENERAL MOTORS COMPANY

1. Install a NEW fuel pressure sensor seal ring (3).

CAUTION: Refer to Fastener Caution .

2. Install the fuel pressure sensor (1) to the fuel pressure line (2) and tighten to 19 N.m (14 lb ft).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 59: Fuel Pressure Sensor
Courtesy of GENERAL MOTORS COMPANY

3. Plug the fuel pressure sensor wiring harness plug (2) to the fuel pressure sensor (1).
4. Lower the vehicle.
5. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

METAL COLLAR QUICK CONNECT FITTING SERVICE

Special Tools

CH-41769 Fuel Line Disconnect Tool Set

For equivalent regional tools, refer to Special Tools .

Removal Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 60: View Of Quick-Connect Fitting Retainer (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

1. Relieve the fuel system pressure before servicing any fuel system connection. Refer to Fuel Pressure
Relief.
2. Remove the retainer from the quick connect fitting.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 61: Blowing Dirt Out Of Fitting (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

WARNING: Wear safety glasses when using compressed air, as flying dirt
particles may cause eye injury.

3. Blow dirt out of the fitting using compressed air.

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 62: View Of Quick Connect Locking Tabs (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

4. Choose the correct tool from the CH-41769 set for the size of the fitting. Insert the tool into the female
connector, then push inward in order to release the locking tabs.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 63: View Of Quick Connect Locking Tabs (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

5. Pull the connection apart.

CAUTION: If necessary, remove rust or burrs from the fuel pipes with an emery
cloth. Use a radial motion with the fuel pipe end in order to prevent
damage to the O-ring sealing surface. Use a clean shop towel in
order to wipe off the male tube ends. Inspect all the connections for
dirt and burrs. Clean or replace the components and assemblies as
required.

6. Use a clean shop towel in order to wipe off the male pipe end.
7. Inspect both ends of the fitting for dirt and burrs. Clean or replace the components as required.

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 64: Oiling Male Pipe Ends (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

WARNING: In order to reduce the risk of fire and personal injury, before
connecting fuel pipe fittings, always apply a few drops of clean
engine oil to the male pipe ends.

This will ensure proper reconnection and prevent a possible fuel

leak.

During normal operation, the O-rings located in the female

connector will swell and may prevent proper reconnection if not
lubricated.

1. Apply a few drops of clean engine oil to the male pipe end.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 65: View Of Connectors (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

2. Push both sides of the fitting together in order to snap the retaining tabs into place.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 66: Ensuring Connection (Metal Collar) Is Secure
Courtesy of GENERAL MOTORS COMPANY

3. Once installed, pull on both sides of the fitting in order to make sure the connection is secure.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 67: View Of Quick-Connect Fitting Retainer (Metal Collar)
Courtesy of GENERAL MOTORS COMPANY

4. Install the retainer to the quick connect fitting.

PLASTIC COLLAR QUICK CONNECT FITTING SERVICE

Plastic Quick Connect Fitting Type Identification

Plastic Quick Connect Fitting Type A

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 68: Quick Connect Fitting Type A
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type A - TI loc with one latch (1).

Plastic Quick Connect Fitting Type B

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 69: Quick Connect Fitting Type B
Courtesy of GENERAL MOTORS COMPANY

 Quick connect fitting type B - TI loc upper latch (1).

 Quick connect fitting type B - TI loc lower latch (2).

Plastic Quick Connect Fitting Type C

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 70: Quick Connect Fitting Type C
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type C (1).

Plastic Quick Connect Fitting Type D

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 71: Quick Connect Fitting Type D
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type D (1).

Plastic Quick Connect Fitting Type E

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 72: Quick Connect Fitting Type E
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type E (1).

Plastic Quick Connect Fitting Type F

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 73: Quick Connect Fitting Type F
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type F (1).

Plastic Quick Connect Fitting Type G

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 74: Quick Connect Fitting Type G
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type G (1).

Plastic Quick Connect Fitting Type H

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 75: Quick Connect Fitting Type H
Courtesy of GENERAL MOTORS COMPANY

Quick connect fitting type H (1).

General Instructions for Handling the Connectors

Before Disconnection
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 76: Blowing Dirt Out Of Fitting (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

WARNING: Wear safety glasses when using compressed air, as flying dirt particles
may cause eye injury.

NOTE: The following instructions apply to all of these types of fittings.

Using compressed air, to blow any dirt out of the quick connect fitting.

After Disconnection

 Wipe off the male pipe end using a clean shop towel.
 Inspect both ends of the fitting for dirt and burrs.
 Clean components as required.
 Replace damaged components.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Type A - Disconnect/Connect

Disconnect

cardiagn.com
Fig. 77: Pushing Latch Down
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Push the tube (3) into the connector (1) and push down the latch (2).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 78: Pushing Latch Into Connector
Courtesy of GENERAL MOTORS COMPANY

2. Push the latch (2) into the connector (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 79: Pulling Pipe Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

3. Pull the pipe (3) out of the connector (1).

4. Release the latch (2).

Connect
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 80: Pulling Pipe Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

1. Push the pipe (3) into the connector (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 81: Pushing Latch Down
Courtesy of GENERAL MOTORS COMPANY

2. When the connector is locked correctly, the latch (2) must align to the connector (1).
3. Do not rely only on the audible click to confirm a secure connection has been made.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 82: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

4. Pull on both sides of the quick connect fitting in order to make sure the connection is secure.

Type B - Disconnect/Connect

Disconnect
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 83: Pulling Latch Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Unlock the connector by pulling the latch (1) out of the connector. Use a suitable tool if necessary.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 84: Pushing Pipe Into Connector
Courtesy of GENERAL MOTORS COMPANY

2. Push the pipe (3) into the connector (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 85: Pushing Latch Into Connector
Courtesy of GENERAL MOTORS COMPANY

3. Push the latch (1) into the connector.

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 86: Pulling Pipe Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

4. Pull the pipe (2) out of the connector (1).

5. Release the latch.

Connect
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 87: Pulling Pipe Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

1. Push the pipe (2) into the connector (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 88: Pushing Latch Into Connector
Courtesy of GENERAL MOTORS COMPANY

2. When the connector is locked correctly, the latch (1) must align to the connector.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 89: Pushing Pipe Into Connector
Courtesy of GENERAL MOTORS COMPANY

NOTE: The latch (2) can only pushed into the connector (1) when the pipe (3) is
connected correctly.

3. Push the latch (2) into the connector (1) to secure the connection.
4. Do not rely only on the audible click to confirm a secure connection has been made.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 90: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

5. Pull on both sides of the quick connect fitting in order to make sure the connection is secure.

Type C - Disconnect/Connect

Disconnect
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 91: View Of Quick Connect Fitting Release Tabs (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Squeeze the plastic quick connect fitting release tabs with the EN-796-A release tool.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 92: View Of Pulling Connection Apart (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

2. Pull the connection apart.

Connect
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 93: Connecting Fittings (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

1. Push both sides of the quick connect fitting together in order to cause the retaining feature to snap into
place.
2. Do not rely only on the audible click to confirm a secure connection has been made.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 94: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

3. Once installed, pull on both sides of the quick connect fitting in order to make sure the connection is
secure.

Type D - Disconnect/Connect

Disconnect
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 95: Releasing Q Release Style Connectors (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Release the fitting by pushing the tab toward the other side of the slot in the fitting.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 96: View Of Pulling Connection Apart (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

2. Pull the connection apart.

Connect
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 97: Connecting Fittings (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

1. Push both sides of the quick connect fitting together in order to cause the retaining feature to snap into
place.
2. Do not rely only on the audible click to confirm a secure connection has been made.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 98: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

3. Once installed, pull on both sides of the quick connect fitting in order to make sure the connection is
secure.

Type E - Disconnect/Connect

Disconnect
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 99: Quick Connect Fitting (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Squeeze where indicated by arrows on both sides of the plastic ring surrounding the quick connect fitting.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cardiagn.com
Fig. 100: View Of Pulling Connection Apart (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

2. Pull the connection apart.

Connect
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Fig. 101: Connecting Fittings (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

1. Push both sides of the quick connect fitting together in order to cause the retaining feature to snap into
place.
2. Do not rely only on the audible click to confirm a secure connection has been made.
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Fig. 102: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

3. Once installed, pull on both sides of the quick connect fitting in order to make sure the connection is
secure.

Type F - Disconnect/Connect

Disconnect
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Fig. 103: View Of Sliding Retainer Style Connector
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Release the fitting by pressing on one side of the release tab causing it to push in slightly. If the tab does
not move, try pressing the tab in from the opposite side. The tab will only move in one direction.
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Fig. 104: View Of Pulling Connection Apart (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

2. Pull the connection apart.

Connect
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Fig. 105: Connecting Fittings (Plastic Collar)
Courtesy of GENERAL MOTORS COMPANY

1. Push both sides of the quick connect fitting together in order to cause the retaining feature to snap into
place.
2. Do not rely only on the audible click to confirm a secure connection has been made.
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Fig. 106: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

3. Once installed, pull on both sides of the quick connect fitting in order to make sure the connection is
secure.

Type G - Disconnect/Connect

Disconnect
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Fig. 107: View Of Connector Latch
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Push the tube (3) into the connector (1) and push down the latch (2) as the arrow shows.
2. Hold the latch (2) in this position.
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Fig. 108: Pulling Pipe Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

3. Pull the pipe (3) out of the connector (1).

4. Release the latch (2).

Connect
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Fig. 109: Pulling Pipe Out Of Connector
Courtesy of GENERAL MOTORS COMPANY

1. Push the pipe (3) into the connector (1).

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Fig. 110: View Of Connector Latch
Courtesy of GENERAL MOTORS COMPANY

2. When the connector is locked correctly, the latch (2) must go back in opposite arrow direction.
3. Do not rely only on the audible click to confirm a secure connection has been made.
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Fig. 111: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

4. Pull on both sides of the quick connect fitting in order to make sure the connection is secure.

Type H - Disconnect/Connect

Disconnect
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Fig. 112: Connector And Latches
Courtesy of GENERAL MOTORS COMPANY

NOTE: Mechanical violence is not necessary for a successful

disconnection/connection.

1. Push the tube (3) into the connector (1) and press the latches (2) together.
2. Hold the latch (2) in this position.
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Fig. 113: Connector Latch
Courtesy of GENERAL MOTORS COMPANY

3. Push the latch (1) completely down into the connector.

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Fig. 114: Pipe And Connector
Courtesy of GENERAL MOTORS COMPANY

4. Pull the pipe (2) out of the connector (1).

Connect
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Fig. 115: Pipe And Connector
Courtesy of GENERAL MOTORS COMPANY

1. Push the pipe (2) into the connector (1).

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Fig. 116: Connector Latch
Courtesy of GENERAL MOTORS COMPANY

NOTE: The latch (1) can only pushed into the connector when the pipe is
connected correctly.

2. When the connector is connected completely, push the latch (1) back into the connector.
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Fig. 117: Connector And Latches
Courtesy of GENERAL MOTORS COMPANY

3. The latch (2) must completely lock at the outside at the connector (1).
4. Do not rely only on the audible click to confirm a secure connection has been made.
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Fig. 118: View Of Quick-Connect Fitting
Courtesy of GENERAL MOTORS COMPANY

5. Pull on both sides of the quick connect fitting in order to make sure the connection is secure.

FUEL SYSTEM CLEANING

NOTE: If the fuel filter is plugged, the fuel tank should be inspected internally and
cleaned if necessary.

1. Remove the fuel pump module assembly.

2. Inspect the fuel pump module strainer. Replace the pump module assembly if the fuel strainer is
contaminated.

NOTE: When flushing the fuel tank, handle the fuel and water mixture as a
hazardous material. Handle the fuel and water in accordance with all
applicable local, state, and federal laws and regulations.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

3. Flush the fuel tank with hot water.

4. Pour the water out of the fuel sender assembly opening in the fuel tank. Rock the fuel tank in order to be
sure that the removal of the water from the fuel tank is complete.
5. Allow the tank to dry completely before reassembly.
6. Disconnect the fuel feed pipe at the engine fuel rail.

NOTE: Only use oil-free compressed air to blow out the fuel pipes.

7. Clean the fuel pipes by applying air pressure in the opposite direction of the fuel flow.
8. Connect the fuel feed pipe to the engine fuel rail.
9. Install the fuel pump module assembly.

FUEL INJECTION FUEL RAIL ASSEMBLY REPLACEMENT

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Removal Procedure

1. Disconnect battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove engine sight shield.
3. Remove the fuel feed pipe from fuel injection fuel rail. Refer to Fuel Feed Pipe Replacement.
4. Remove the positive crankcase ventilation pipe from the intake manifold. Refer to Positive Crankcase
Ventilation Hose/Pipe/Tube Replacement .
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Fig. 119: Fuel Injector Wiring Harness Plugs
Courtesy of GENERAL MOTORS COMPANY

5. Disconnect the 4 fuel injector wiring harness plugs (2).

6. Unclip the ECM wiring harness from retainer clips (1) and the camshaft cover.
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Fig. 120: Fuel Injection Fuel Rail Bolts And Ground Cable Nut
Courtesy of GENERAL MOTORS COMPANY

7. Remove the ground cable nut (2) and the ground cable.
8. Remove the 2 fuel injection fuel rail bolts (1).
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Fig. 121: Fuel Injection Fuel Rail Assembly
Courtesy of GENERAL MOTORS COMPANY

9. Remove the fuel injection fuel rail assembly (1) and the 4 fuel injector seal rings (2).

Installation Procedure
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Fig. 122: Fuel Injection Fuel Rail Assembly
Courtesy of GENERAL MOTORS COMPANY

NOTE: Lubricate the 4 fuel injector seal rings (2) with clean engine oil.

1. Install the fuel injection fuel rail assembly (1) to the intake manifold. Use NEW fuel injector seal rings
(2).
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Fig. 123: Fuel Injection Fuel Rail Bolts And Ground Cable Nut
Courtesy of GENERAL MOTORS COMPANY

CAUTION: Refer to Fastener Caution .

2. Install the 2 fuel injection fuel rail bolts (1) and tighten to 7 N.m (62 lb in).
3. Install the ground cable and the ground cable nut (2) and tighten.
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Fig. 124: Fuel Injector Wiring Harness Plugs
Courtesy of GENERAL MOTORS COMPANY

4. Connect the 4 fuel injector wiring harness plugs (2).

5. Clip the ECM wiring harness to the retainer clip (1) and the camshaft cover.
6. Install the positive crankcase ventilation pipe to the intake manifold. Refer to Positive Crankcase
Ventilation Hose/Pipe/Tube Replacement .
7. Install the fuel feed pipe to the fuel injection fuel rail. Refer to Fuel Feed Pipe Replacement.
8. Install the engine sight shield.
9. Connect battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .

FUEL INJECTOR REPLACEMENT

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Fig. 125: Fuel Injector, Rail & Components
Courtesy of GENERAL MOTORS COMPANY

Fuel Injector Replacement

Callout Component Name
Preliminary Procedure

1. Disconnect battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
2. Remove the fuel injection fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly
Replacement.
1 Fuel Rail
2 Fuel Injector
3 Fuel Injector Seal Ring
4 Fuel Injector Retainer Clamp

EVAPORATIVE EMISSION CANISTER VENT SOLENOID VALVE REPLACEMENT

Removal Procedure
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Fig. 126: Rotating EVAP Canister Vent Valve
Courtesy of GENERAL MOTORS COMPANY

1. Remove the evaporative emission (EVAP) canister. Refer to Evaporative Emission Canister
Replacement.
2. Rotate the EVAP canister vent valve counterclockwise to release from the locked position.
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Fig. 127: View Of EVAP Canister Vent Valve
Courtesy of GENERAL MOTORS COMPANY

3. Remove the vent valve from the EVAP canister.

Installation Procedure
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Fig. 128: View Of EVAP Canister Vent Valve
Courtesy of GENERAL MOTORS COMPANY

1. Insert the EVAP canister vent solenoid valve into the EVAP canister, with the valve aligned to the
released position.
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Fig. 129: Rotating EVAP Canister Vent Valve
Courtesy of GENERAL MOTORS COMPANY

2. Rotate vent valve clockwise to secure into the locked position.

3. Install the EVAP canister. Refer to Evaporative Emission Canister Replacement.

EVAPORATIVE EMISSION CANISTER REPLACEMENT

Removal Procedure

WARNING: Refer to Gasoline/Gasoline Vapors Warning .

WARNING: Refer to Safety Goggles and Fuel Warning .

1. Open the hood.

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and
Connection .
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

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Fig. 130: Fuel Tank Filler Pipe
Courtesy of GENERAL MOTORS COMPANY

WARNING: Do not breathe the air through the EVAP component tubes or hoses.
The fuel vapors inside the EVAP components may cause personal
injury.

NOTE: Do not remove the fuel tank filler hose when the fuel tank is over half filled
with fuel.

4. Remove the clamp (2).

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

If the fuel level is over half filled. Refer to Fuel Tank Draining.

5. Remove the fuel tank filler hose (3) from the fuel tank filler pipe (1).

WARNING: To help avoid personal injury, always use jack stands when you are
working on or under any vehicle that is supported only by a jack.

CAUTION: When you are jacking or lifting a vehicle at the frame side rails or
other prescribed lift points, be certain that the lift pads do not contact
the catalytic converter, the brake pipes or the fuel lines. If such
contact occurs, vehicle damage or unsatisfactory vehicle
performance may result.

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6. Place a suitable adjustable jack under the fuel tank.

Fig. 131: Fuel Tank Straps

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Courtesy of GENERAL MOTORS COMPANY

7. Remove the 2 fuel tank strap bolts (2).

8. Remove the 2 fuel tank straps (1).

NOTE: Closely watch parts like pipes or hoses that are still installed to the fuel
tank. If lowering the fuel tank slightly does not provide enough access to
remove the fuel tank, refer to Fuel Tank Replacement.

9. Lower the fuel tank to a height where the evaporative emission canister is easily accessible.

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Fig. 132: Evaporative Emission Canister
Courtesy of GENERAL MOTORS COMPANY

WARNING: Always wear safety goggles when working with fuel in order to
protect the eyes from fuel splash.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

10. Disconnect the evaporative emission vent pipe (2).

11. Disconnect the evaporative emission canister wiring harness plug (4).
12. Disconnect the evaporative emission canister purge pipe (3).
13. Remove the evaporative emission canister (1) from the evaporative emission canister bracket.

Installation Procedure

Fig. 133: Evaporative Emission Canister cardiagn.com

Courtesy of GENERAL MOTORS COMPANY

1. Install the evaporative emission canister (1) to the evaporative emission canister bracket.
2. Connect the evaporative emission canister purge pipe (3).
3. Connect the evaporative emission canister wiring harness plug (4).
4. Connect the evaporative emission vent pipe (2).
5. Raise the fuel tank to its original position.
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Fig. 134: Fuel Tank Straps
Courtesy of GENERAL MOTORS COMPANY

6. Install the 2 fuel tank straps (1).

CAUTION: Refer to Fastener Caution .

7. Install the 2 fuel tank strap bolts (2) and tighten to 22 Y (16 lb ft).
8. Remove the suitable adjustable jack.
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Fig. 135: Fuel Tank Filler Pipe
Courtesy of GENERAL MOTORS COMPANY

9. Install the fuel tank filler hose (3) to the fuel tank filler pipe (1).
10. Install the clamp (2).
11. Lower the vehicle.
12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
13. Close the hood.

EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE REPLACEMENT

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Fig. 136: Evaporative Emission Canister Purge Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY

Evaporative Emission Canister Purge Solenoid Valve Replacement

Callout Component Name
WARNING:
Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present.
Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or
explosion. Have a dry chemical (Class B) fire extinguisher nearby.

Preliminary Procedure Disconnect battery negative cable. Refer to Battery Negative Cable
Disconnection and Connection .
1 Fuel Ventilation Pipe
Evaporative Emission Canister Purge Solenoid Valve
2 Procedure
Disconnect the electrical connector.

IGNITION COIL REPLACEMENT

Special Tools

EN-6009 Remover and Installer Ignition Module

For equivalent regional tools, refer to Special Tools .

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

Removal Procedure

1. Remove the engine sight shield. Refer to Engine Sight Shield Replacement .

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Fig. 137: Ignition Coil And Ignition Coil Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

2. Disconnect the ignition coil wiring harness plug (2) from the ignition coil (1).
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Fig. 138: Ignition Coil Bolts
Courtesy of GENERAL MOTORS COMPANY

3. Remove the 2 ignition coil bolts (1).

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Fig. 139: Ignition Coil And Special Tool
Courtesy of GENERAL MOTORS COMPANY

4. Install EN-6009 remover/installer (1) to the ignition coil (2).

5. Remove the ignition coil.

Installation Procedure

1. Install the ignition coil.

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Fig. 140: Ignition Coil And Special Tool
Courtesy of GENERAL MOTORS COMPANY

2. Remove EN-6009 remover (1) from the ignition coil (2).

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Fig. 141: Ignition Coil Bolts
Courtesy of GENERAL MOTORS COMPANY

CAUTION: Refer to Fastener Caution .

3. Install the 2 ignition coil bolts (1) and tighten to 8 (71 lb in).
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Fig. 142: Ignition Coil And Ignition Coil Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

4. Connect the ignition coil wiring harness plug (2) to the ignition coil (1).
5. Install the engine sight shield. Refer to Engine Sight Shield Replacement .

Q38 THROTTLE BODY: THROTTLE/IDLE LEARN

Description

The engine control module (ECM) learns the airflow through the throttle body to ensure the correct idle. The
learned airflow values are stored within the ECM. These values are learned to adjust for production variation
and will continuously learn during the life of the vehicle to compensate for reduced airflow due to throttle body
coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values
must be relearned.

An engine that had a heavily coked throttle body that has been cleaned or replaced may take several drive
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values
back to zero. A new ECM will also have values set to zero.

The idle may be unstable or a DTC may set if the learned values do not match the actual airflow.

Conditions for Running the Throttle Learn Procedure

Scan tool Idle Learn or Idle Learn Reset Procedure

 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123,
P0128, P0171, P0172, P0174, P0175, P0201-P0208, P0220, P0222, P0223, P0261, P0262, P0264, P0265,
P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P0300-P0308,
P0351-P0358, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120,
P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.

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 Ignition ON, engine OFF.
 The vehicle speed sensor (VSS) is 0 km/h (0 mph).

Service Bay/On Road Learn Procedure

 DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123,
P0128, P0171, P0172, P0174, P0175, P0201-P0208, P0220, P0222, P0223, P0261, P0262, P0264, P0265,
P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P0300-P0308,
P0351-P0358, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120,
P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.
 The engine speed is between 450-4, 000 RPM.
 The manifold absolute pressure (MAP) is greater than 5 kPa.
 The mass air flow (MAF) is greater than 2 g/s.
 The ignition voltage is greater than 10 volts.

Throttle Learn

Scan Tool Idle Learn or Idle Learn Reset Procedure - Performed after the throttle body is cleaned or
replaced

1. Ignition ON, engine OFF, perform the Idle Learn or Idle Learn Reset in Configuration/Reset or Module
Setup.
2. Engine idling, observe the scan tool Throttle Body Idle Airflow Compensation parameter. The Throttle
Body Idle Airflow Compensation value should equal 0 % and the engine should be idling at a normal idle
speed.
3. Clear the DTCs and return to the diagnostic that referred you here.

Service Bay/On Road Idle Learn Procedure - Performed after the ECM is programmed or replaced

NOTE: Do NOT perform this procedure if DTCs are set. Refer to Diagnostic
Trouble Code (DTC) List - Vehicle .
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

1. Engine idling for 3 minutes.

2. Observe the scan tool Desired Idle Speed and the actual Engine Speed parameters.
3. The ECM will start to learn the new idle cells and the Desired Idle Speed should start to decrease.
4. Ignition OFF for 60 seconds.
5. Start and idle the engine for 3 minutes.
6. After the 3 minute run time the engine should be idling normal.

NOTE: During the drive cycle the check engine light may come on with idle
speed DTCs. If idle speed codes are set, clear codes so the ECM can
continue to learn.

 If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70
km/h (44 mph) with several decelerations and extended idles.

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7. After the drive cycle, the engine should be idling normally.
 If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds and repeat step
6.
8. Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you
here.

SPARK PLUG INSPECTION

Spark Plug Usage

1. Ensure that the correct spark plug is installed. An incorrect spark plug causes driveability conditions.
Refer to Ignition System Specifications for the correct spark plug.
2. Ensure that the spark plug has the correct heat range. An incorrect heat range causes the following
conditions:
 Spark plug fouling-Colder plug

 Pre-ignition causing spark plug and/or engine damage-Hotter plug

Spark Plug Inspection

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Fig. 143: Cross Sectional View Of Spark Plug
Courtesy of GENERAL MOTORS COMPANY

1. Inspect the terminal post (1) for damage.

 Inspect for a bent or broken terminal post (1).

 Test for a loose terminal post (1) by twisting and pulling the post. The terminal post (1) should
NOT move.
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Fig. 144: Identifying Points For Inspecting Spark Plug For Flashover Or Carbon Tracking Soot
Courtesy of GENERAL MOTORS COMPANY

2. Inspect the insulator (2) for flashover or carbon tracking, soot. This is caused by the electrical charge
traveling across the insulator (2) between the terminal post (1) and ground. Inspect for the following
conditions:
 Inspect the spark plug boot for damage.

 Inspect the spark plug recess area of the cylinder head for moisture, such as oil, coolant, or water. A
spark plug boot that is saturated causes arcing to ground.
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Fig. 145: Inspecting Spark Plug Insulator
Courtesy of GENERAL MOTORS COMPANY

3. Inspect the insulator (2) for cracks. All or part of the electrical charge may arc through the crack instead
of the electrodes (3, 4).
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Fig. 146: Cutaway/Description View Of Spark Plug
Courtesy of GENERAL MOTORS COMPANY

4. Inspect for evidence of improper arcing.

 Measure the gap between the center electrode (4) and the side electrode (3) terminals. Refer to
Ignition System Specifications . An excessively wide electrode gap can prevent correct spark plug
operation.
 Inspect for the correct spark plug torque. Refer to Ignition System Specifications . Insufficient
torque can prevent correct spark plug operation. An over torqued spark plug, causes the insulator
(2) to crack.
 Inspect for signs of tracking that occurred near the insulator tip instead of the center electrode (4).

 Inspect for a broken or worn side electrode (3).

 Inspect for a broken, worn, or loose center electrode (4) by shaking the spark plug.

5. A rattling sound indicates internal damage.

6. A loose center electrode (4) reduces the spark intensity.
 Inspect for bridged electrodes (3, 4). Deposits on the electrodes (3, 4) reduce or eliminates the gap.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

 Inspect for worn or missing platinum pads on the electrodes (3, 4) If equipped.
 Inspect for excessive fouling.
 Inspect the spark plug recess area of the cylinder head for debris. Dirty or damaged threads can
cause the spark plug not to seat correctly during installation.

Spark Plug Visual Inspection

1. Normal operation-Brown to grayish-tan with small amounts of white powdery deposits are normal
combustion by-products from fuels with additives.
2. Carbon Fouled-Dry, fluffy black carbon, or soot caused by the following conditions:
 Rich fuel mixtures

 Leaking fuel injectors

 Excessive fuel pressure

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 Restricted air filter element

 Incorrect combustion

 Reduced ignition system voltage output

 Weak coils

 Worn ignition wires

 Incorrect spark plug gap

 Excessive idling or slow speeds under light loads can keep spark plug temperatures so low that
normal combustion deposits may not burn off.
 Deposit Fouling-Oil, coolant, or additives that include substances such as silicone, very white
coating, reduces the spark intensity. Most powdery deposits will not effect spark intensity unless
they form into a glazing over the electrode.

SPARK PLUG REPLACEMENT

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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 147: Spark Plugs
Courtesy of GENERAL MOTORS COMPANY

Spark Plug Replacement

Callout Component Name
Preliminary Procedure

1. Open the hood.

2. Remove the engine sight shield.
3. Remove the ignition coil. Refer to Ignition Coil Replacement.
Spark Plugs

CAUTION:
Refer to Fastener Caution .
1

Tighten
25 N.m (18 lb ft)

CAMSHAFT POSITION ACTUATOR SOLENOID VALVE REPLACEMENT

Removal Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 148: ECM Wiring Harness
Courtesy of GENERAL MOTORS COMPANY

1. Disconnect the intake camshaft position actuator solenoid valve wiring harness plug (3).
2. Disconnect the exhaust camshaft position actuator solenoid valve wiring harness plug (2).
3. Unclip ECM wiring harness (1) from camshaft cover.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 149: Camshaft Position Actuator Solenoid Valve Bolts
Courtesy of GENERAL MOTORS COMPANY

4. Remove the 4 camshaft position actuator solenoid valve bolts (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 150: Intake Camshaft Position Actuator Solenoid Valve And Exhaust Camshaft Position
Actuator Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY

5. Carefully rotate the intake camshaft position actuator solenoid valve (1) counter clockwise as shown.
6. Carefully rotate the exhaust camshaft position actuator solenoid valve (2) clockwise as shown.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 151: Camshaft Position Actuator Solenoid Valves
Courtesy of GENERAL MOTORS COMPANY

CAUTION: The camshaft position actuator solenoid valves must be kept parallel
to the engine front cover during removal and installation. The
camshaft position actuator solenoid valves can be damaged if they
become wedged or stuck during this process.

7. Carefully remove the 2 camshaft position actuator solenoid valves (2) and the seal rings (1).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 152: Camshaft Position Actuator Solenoid Valves
Courtesy of GENERAL MOTORS COMPANY

CAUTION: The camshaft position actuator solenoid valves must be kept parallel
to the engine front cover during removal and installation. The
camshaft position actuator solenoid valves can be damaged if they
become wedged or stuck during this process.

NOTE: Lubricate the seal rings with oil in order to make the installation easier.

1. Carefully install the 2 camshaft position actuator solenoid valves (2) and the 2 seal rings (1) by gently
pressing into position.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 153: Camshaft Position Actuator Solenoid Valve Bolts
Courtesy of GENERAL MOTORS COMPANY

CAUTION: Refer to Fastener Caution .

2. Install the 4 camshaft position actuator solenoid valve bolts (1) and tighten to 8 N.m (71 lb in).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 154: Camshaft Position Actuator Solenoid Valves Proper Position
Courtesy of GENERAL MOTORS COMPANY

3. The 2 camshaft position actuator solenoid valves should be installed in the position as shown (1) and (2).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 155: ECM Wiring Harness
Courtesy of GENERAL MOTORS COMPANY

4. Clip ECM wiring harness (1) to camshaft cover.

5. Connect the exhaust camshaft position actuator solenoid valve wiring harness plug (2).
6. Connect the intake camshaft position actuator solenoid valve wiring harness plug (3).

CRANKSHAFT POSITION SENSOR REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 156: Crankshaft Position Sensor
Courtesy of GENERAL MOTORS COMPANY

Crankshaft Position Sensor Replacement

Callout Component Name
Preliminary Procedures
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
Crankshaft Position Sensor Bolt

CAUTION:
Refer to Fastener Caution .
1

Tighten
8 N.m (71 lb in)
Crankshaft Position Sensor

Procedure
2 1. Disconnect the electrical connector.
2. After replacement of crankshaft position sensor, use a scan tool to
speed up learn function. Refer to K20 Engine Control Module:
Programming and Setup .
3 Crankshaft Position Sensor Seal Ring
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

CAMSHAFT POSITION SENSOR REPLACEMENT

Removal Procedure

1. Open hood.

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Fig. 157: Camshaft Position Sensor Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

NOTE: Graphic shows exhaust camshaft position sensor. Use same procedure for
Intake camshaft position sensor.

2. Disconnect the camshaft position sensor wiring harness plug (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 158: Camshaft Position Sensor
Courtesy of GENERAL MOTORS COMPANY

NOTE: Graphic shows exhaust camshaft position sensor. Use same procedure for
Intake camshaft position sensor.

3. Remove the camshaft position sensor bolt (3).

4. Remove the camshaft position sensor (2) and the seal ring (1).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 159: Camshaft Position Sensor
Courtesy of GENERAL MOTORS COMPANY

NOTE: Graphic shows exhaust camshaft position sensor. Use same procedure for
Intake camshaft position sensor.

1. Install the camshaft position sensor (2) and the seal ring (1).

CAUTION: Refer to Fastener Caution

2. Install the camshaft position sensor bolt (3) and tighten to 8 N.m (71 lb in).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 160: Camshaft Position Sensor Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

NOTE: Graphic shows exhaust camshaft position sensor. Use same procedure for
Intake camshaft position sensor.

3. Connect the camshaft position sensor wiring harness plug (1).

4. After replacement of an camshaft position sensor, use a scan tool to speed up learn function. Refer to K20
Engine Control Module: Programming and Setup
5. Close hood.

KNOCK SENSOR REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 161: Knock Sensor
Courtesy of GENERAL MOTORS COMPANY

Knock Sensor Replacement

Callout Component Name
Preliminary Procedures

1. Disconnect battery negative cable. Refer to Battery Negative Cable Disconnection and
Connection .
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
Knock Sensor Bolt

CAUTION:
Refer to Fastener Caution .

Procedure
1
1. Disconnect the electrical connector.
2. DO NOT mistake the knock sensor electrical connector with the
generator electrical connector.

Tighten
25 N.m (18 lb ft)
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

2 Knock Sensor

AIR CLEANER INLET DUCT REPLACEMENT

Removal Procedure

1. Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement .

Fig. 162: Intake Air Duct And Bolt

cardiagn.com
Courtesy of GENERAL MOTORS COMPANY

2. Remove the intake air duct bolt (2).

3. Remove the intake air duct (1)

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 163: Intake Air Duct And Bolt
Courtesy of GENERAL MOTORS COMPANY

1. Install the intake air duct (1).

CAUTION: Refer to Fastener Caution .

2. Install and tighten the intake air duct bolt (2).

3. Install the front bumper fascia. Refer to Front Bumper Fascia Replacement .

AIR CLEANER OUTLET DUCT REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 164: Air Cleaner Outlet Duct
Courtesy of GENERAL MOTORS COMPANY

Air Cleaner Outlet Duct Replacement

Callout Component Name
1 Air Cleaner Outlet Duct Clamp
2 Air Cleaner Outlet Duct Clamp
Air Cleaner Outlet Duct
3 TIP: Air cleaner outlet front duct and air cleaner outlet rear duct are
one part.

AIR CLEANER ELEMENT REPLACEMENT

Removal Procedure

1. Open hood.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 165: Air Cleaner Housing, Mass Air Flow Sensor Wiring Harness Plug And Mass Air Flow
Sensor
Courtesy of GENERAL MOTORS COMPANY

2. Disconnect mass air flow sensor wiring harness plug (2) from mass air flow sensor (3).
3. Unclip mass air flow sensor wiring harness retainer clip from air cleaner housing (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 166: Air Cleaner Housing Air Cleaner Housing, Mass Air Flow Sensor Wiring Harness Plug
And Mass Air Flow Sensor
Courtesy of GENERAL MOTORS COMPANY

4. Remove the air cleaner outlet duct clamp (3).

5. Remove the air cleaner outlet duct (2) from air cleaner housing (1).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 167: Air Cleaner Element
Courtesy of GENERAL MOTORS COMPANY

6. Remove the 5 air cleaner housing bolts (1).

7. Remove the air cleaner upper housing (2) from the air cleaner lower housing (4).
8. Remove the air cleaner element (3).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 168: Air Cleaner Element
Courtesy of GENERAL MOTORS COMPANY

1. Install the air cleaner element (3).

2. Install the air cleaner upper housing (2) to the air cleaner lower housing (4).

CAUTION: Refer to Fastener Caution .

3. Install the 5 air cleaner housing bolts (1).

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 169: Air Cleaner Housing Air Cleaner Housing, Mass Air Flow Sensor Wiring Harness Plug
And Mass Air Flow Sensor
Courtesy of GENERAL MOTORS COMPANY

4. Install the air cleaner outlet duct (2) to the air cleaner housing (1).
5. Install the air cleaner outlet duct clamp (3).
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 170: Air Cleaner Housing, Mass Air Flow Sensor Wiring Harness Plug And Mass Air Flow
Sensor
Courtesy of GENERAL MOTORS COMPANY

6. Clip in mass air flow sensor wiring harness retainer clip to air cleaner housing (1).
7. Connect the mass air flow sensor wiring harness plug 2) to the mass air flow sensor (3).
8. Close hood.

AIR CLEANER ASSEMBLY REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 171: Air Cleaner Assembly
Courtesy of GENERAL MOTORS COMPANY

Air Cleaner Assembly Replacement

Callout Component Name
Air Cleaner Outlet Duct Clamp.
Procedure
1
Loosen clamp and remove air cleaner outlet duct from air cleaner
assembly.
Mass Flow Sensor
Procedure
2
Disconnect mass air flow sensor wiring harness plug from mass air
flow sensor and unclip from retainer clip.
3 Air Cleaner Assembly

AIR CLEANER UPPER HOUSING REPLACEMENT

Removal Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 172: Mass Airflow Sensor Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

1. Disconnect the mass airflow sensor wiring harness plug (2).

2. Unclip the ECM wiring harness (3) from the air cleaner housing.
3. Remove the air cleaner outlet duct (1). Refer to Air Cleaner Outlet Duct Replacement.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 173: Mass Air Flow Sensor
Courtesy of GENERAL MOTORS COMPANY

4. Remove the mass air flow sensor (3) from the air cleaner upper housing (2). Refer to Mass Airflow
Sensor Replacement.
5. Remove the 6 air cleaner housing cover bolts (1).
6. Remove the air cleaner upper housing (2).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 174: Mass Air Flow Sensor
Courtesy of GENERAL MOTORS COMPANY

1. Install the air cleaner upper housing (2).

CAUTION: Refer to Fastener Caution .

2. Install the 6 air cleaner housing cover bolts (1) and tighten to 5 N.m (44 lb in).
3. Install the mass air flow sensor (3) to the air cleaner upper housing (2). Refer to Mass Airflow Sensor
Replacement.
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 175: Mass Airflow Sensor Wiring Harness Plug
Courtesy of GENERAL MOTORS COMPANY

4. Install the air cleaner outlet duct (1). Refer to Air Cleaner Outlet Duct Replacement.
5. Connect the mass airflow sensor wiring harness plug (2).
6. Clip in the ECM wiring harness (3) the air cleaner housing.

AIR CLEANER LOWER HOUSING REPLACEMENT

Removal Procedure

1. Remove the air cleaner upper housing. Refer to Air Cleaner Upper Housing Replacement.
2. Remove the air cleaner element. Refer to Air Cleaner Element Replacement.
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2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 176: Water Drain Hose
Courtesy of GENERAL MOTORS COMPANY

3. Unclip the water drain hose (3) from the air cleaner lower housing (1) if equipped.
4. Remove the air cleaner lower housing (1) from the air cleaner brackets.
5. Remove the air cleaner bracket insulators (2) from the air cleaner lower housing (1).
6. Remove the air cleaner insulator (4) from the air cleaner lower housing (1).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 177: Water Drain Hose
Courtesy of GENERAL MOTORS COMPANY

1. Install the air cleaner insulator (4) to the air cleaner lower housing (1).
2. Install the air cleaner bracket insulators (2) to the air cleaner lower housing (1).
3. Install the air cleaner lower housing (1) to the air cleaner brackets.
4. Install the water drain hose (3) to the air cleaner lower housing (1) if equipped.
5. Install the air cleaner element. Refer to Air Cleaner Element Replacement.
6. Install the air cleaner upper housing. Refer to Air Cleaner Upper Housing Replacement.

CHARGE AIR COOLER INLET AIR HOSE REPLACEMENT

Removal Procedure

1. Open the hood.

2. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 178: Charge Air Cooler Inlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

3. Loosen the charge air cooler inlet air hose clamp (1).
4. Remove the charge air cooler inlet air hose (2) from the turbocharger.
5. Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 179: Charge Air Cooler Inlet Air Hose Quick Connector
Courtesy of GENERAL MOTORS COMPANY

6. Unlock the charge air cooler inlet air hose quick connector (1).
7. Remove the charger air cooler inlet air hose (2).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 180: Charge Air Cooler Inlet Air Hose Quick Connector
Courtesy of GENERAL MOTORS COMPANY

1. Install the charger air cooler inlet air hose (2) to the charge air cooler until it engages audible.

CAUTION: Refer to Fastener Caution .

2. Install the front bumper fascia. Refer to Front Bumper Fascia Replacement .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 181: Charge Air Cooler Inlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

3. Install the charger air cooler inlet air hose (2) to the turbocharger.
4. Install and tighten the charger air cooler inlet air hose clamp (1).
5. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection .
6. Close the hood.

CHARGE AIR COOLER OUTLET AIR HOSE REPLACEMENT (AUTOMATIC TRANSMISSION)

Removal Procedure

1. Open the hood.

2. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 182: Charge Air Cooler Outlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

3. Disconnect the turbocharger pressure sensor wiring harness plug (1).

4. Loosen the charge air cooler outlet air hose clamp (2).
5. Remove the charge air cooler outlet air hose (3) from the throttle body.
6. Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 183: Charge Air Cooler Outlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

7. Unlcip the radiator inlet hose from the charge air cooler outlet air hose (2).
8. Remove the charge air cooler outlet air hose (2) from the charge air cooler (1).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 184: Charge Air Cooler Outlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

1. Clip in the radiator inlet hose to the charge air cooler outlet air hose (2).
2. Install the charge air cooler outlet air hose (2) to the charge air cooler (1).
3. Install the front bumper fascia. Refer to Front Bumper Fascia Replacement .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 185: Charge Air Cooler Outlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

4. Install the charger air cooler outlet air hose (3) to the throttle body.
5. Install and tighten the charger air cooler outlet air hose clamp (2).
6. Connect the turbocharger pressure sensor wiring harness plug (1).
7. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection .
8. Close the hood.

CHARGE AIR COOLER OUTLET AIR HOSE REPLACEMENT (MANUAL TRANSMISSION)

Removal Procedure

1. Open the hood.

2. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 186: Charge Air Cooler Outlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

3. Disconnect the turbocharger pressure sensor wiring harness plug (1).

4. Loosen the charge air cooler outlet air hose clamp (2).
5. Remove the charge air cooler outlet air hose (3) from the throttle body.
6. Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 187: Charger Air Cooler Outlet Air Hose And Charge Air Cooler
Courtesy of GENERAL MOTORS COMPANY

7. Remove the charger air cooler outlet air hose bolt (3).
8. Loosen the clamp.
9. Remove the charger air cooler outlet air hose (1) from the charge air cooler (2).

Installation Procedure
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 188: Charger Air Cooler Outlet Air Hose And Charge Air Cooler
Courtesy of GENERAL MOTORS COMPANY

1. Install the charger air cooler outlet air hose (1) to the charge air cooler (2).
2. Install the clamp.

CAUTION: Refer to Fastener Caution .

3. Install the charger air cooler outlet air hose bolt (3) and tighten to 8 N.m (71 lb in).
4. Install the front bumper fascia. Refer to Front Bumper Fascia Replacement .
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 189: Charge Air Cooler Outlet Air Hose
Courtesy of GENERAL MOTORS COMPANY

5. Install the charger air cooler outlet air hose (3) to the throttle body.
6. Install and tighten the charger air cooler outlet air hose clamp (2).
7. Connect the turbocharger pressure sensor wiring harness plug (1).
8. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection .
9. Close the hood.

CHARGE AIR BYPASS REGULATOR SOLENOID VALVE REPLACEMENT

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Repair Instructions - Cruze

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Fig. 190: Charge Air Bypass Regulator Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY

Charge Air Bypass Regulator Solenoid Valve Replacement

Callout Component Name
Charge Air Bypass Regulator Solenoid Valve Hose (Qty: 3)
1 Procedure
Disconnect the electrical connector.
2 Charge Air Bypass Regulator Solenoid Valve
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine Controls
Schematics - Cruze

SCHEMATIC WIRING DIAGRAMS

ENGINE CONTROLS WIRING SCHEMATICS

Power, Ground, Serial Data, and MIL Wiring Schematics

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Fig. 1: Power, Ground, Serial Data, and MIL Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

CAV_19 19
CONN_X1 X1
CAV_20 20
CONN_X3 X3
139 Run/Crank Ignition 1 Voltage
140 Battery Positive Voltage
140_RD/WH 140 RD/WH
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CAV_20 20
CAV_27 27
Powertrain Main Relay Fused
5290
Supply (1)
CAV_28 28
CONN_X2 X2
CAV_1 1
5290_RD/BU 5290 RD/BU
CAV_13 13
139_VT/BU 139 VT/BU
139_VT/BU 139 VT/BU
5290_RD/BU 5290 RD/BU
5290_RD/BU 5290 RD/BU

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5991 Powertrain Relay Coil Control
5991_YE 5991 YE
CAV_40 40
CAV_17 17
TRANSMISSION-AUTO 6 SPD,
MH8
HMD, X23F
TRANSMISSION-MAN 6 SPD,
OPEL, 76.5 MM, 4.273 1ST,
MF3 2.158 2ND, 1.302 3RD, 0.959
4TH, 0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6 SPD,
OPEL, 76.5 MM, 4.273 1ST,
MR5 2.353 2ND, 1.475 3RD, 1.067
4TH, 0.875 5TH, 0.744 6TH,
M32-6 WR
450 Ground
450_BK 450 BK
CAV_73 73
CONN_X2 X2
5985 Accessory Wakeup Serial Data
5985_BU 5985 BU
CAV_18 18
CONN_X1 X1
High Speed GMLAN Serial Data
2500
(+) (1)
2500_BU 2500 BU
CAV_29 29
High Speed GMLAN Serial Data
2501
(-) (1)
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

2501_WH 2501 WH
CAV_43 43
419 Check Engine Indicator Control
419_BN/WH 419 BN/WH
CAV_52 52
CAV_25 25
419_BN/WH 419 BN/WH
419_BN/WH 419 BN/WH
CAV_79 79
CAV_12 12
CAV_1 1
CAV_3 3
CAV 5 5

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CAV_2 2
F5UA F5UA 15A
F2UA F2UA 15A
F10UA F10UA 15A
F8UA F8UA 15A
F9UA F9UA 15A
F11UA F11UA 10A
F46UA F46UA 10A
F47UA F47UA 10A
J112 J112
G114 G114
X200 X200
X190 X190
KR73
K20
A90 Logic
P16
Data_Communication_Schematics_REF Data Communication Schematics
X50A
KR75

5V and Low Reference Bus (1 of 2) Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

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Fig. 2: 5V and Low Reference Bus (1 of 2) Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

5300 Camshaft Position Intake Sensor Supply Voltage (1)
5300 GY/BU 5300 GY/BU
CAV_1 1
CAV_40 40
CONN_X2 X2
6457 Camshaft CAM X Supply Voltage
6457_GY/YE 6457 GY/YE
CAV_1 1
CAV_37 37
2700 A/C Pressure Sensor 5 Volt Reference
2700_BN/RD 2700 BN/RD
CAV_38 38
CONN_X3 X3
CAV_26 26
CONN_X1 X1
2700_BN/RD 2700 BN/RD
CAV_2 2
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CAV_53 53
CONN_X1 X1
2700_BN/RD 2700 BN/RD
6270 Crankshaft 60X Sensor Voltage
6270_VT/BU 6270 VT/BU
CAV_1 1
CAV_36 36
CONN_X2 X2
6109 Clutch Apply Sensor Voltage Reference
6109_GY/RD 6109 GY/RD
CAV_C C
CAV_38 38
CONN X3 X3

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3096 Output Speed (Digital) 5V Sensor Reference
3096_GY/BK 3096 GY/BK
CAV_1 1
CAV_35 35
3201 Throttle Inlet Absolute Pressure Sensor 5V Reference
3201_WH/RD 3201 WH/RD
CAV_2 2
CAV_23 23
CONN_X1 X1
6109_GY/RD 6109 GY/RD
5301 Camshaft Position Intake Sensor Low Reference (1)
5301_BK/GN 5301 BK/GN
CAV_24 24
CONN_X2 X2
CAV 2 2
6267 Camshaft CAM X Ground
6267 BK/GY 6267 BK/GY
CAV_21 21
CAV_2 2
5514 A/C Refrigerant Pressure Sensor Low Reference
5514_BK/BN 5514 BK/BN
CAV_55 55
CAV_1 1
5514_BK/BN 5514 BK/BN
CAV_13 13
CONN_X1 X1
CAV_39 39
6272 Crankshaft 60X Sensor Low Reference
6272 BK/VT
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

6272 BK/VT
CAV_20 20
CONN_X2 X2
CAV_2 2
6110 Clutch Apply Sensor Low Reference
6110_BK/GY 6110 BK/GY
CAV_22 22
CONN_X3 X3
CAV_A A
3097 Output Speed (Digital) 5V Sensor Return
3097_WH/BK 3097 WH/BK
CAV_19 19
CAV 2 2

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2760 Intake Air Temperature Sensor Low Reference
2760_BK/VT 2760 BK/VT
CAV_31 31
CONN_X1 X1
CAV_1 1
6110_BK/GY 6110 BK/GY
6110_BK/GY 6110 BK/GY
5514_BK/BN 5514 BK/BN
CAV_3 3
CAV_29 29
CAV_23 23
CAV_2 2
CAV_31 31
CAV_9 9
6109 GY/RD 6109 GY/RD
CONN_X1 X1
CONN X3 X3
2709 Fuel Tank Pressure Sensor 5 Volt Reference
2709_YE/RD 2709 YE/RD
CAV_3 3
CAV_43 43
CONN_X3 X3
6281 Fuel Level Sensor Low Reference
6281_BN/GN 6281 BN/GN
CAV_27 27
CONN_X3 X3
CAV_2 2
CAV_20 20
C V D
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

D
2709_YE/RD 2709 YE/RD
2709_YE/RD 2709 YE/RD
2709_YE/RD 2709 YE/RD
CAV_F F
CAV_18 18
X104 X104
X200 X200
X190 X190
X104 X104
X200 X200
X190 X190
X190 X190

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X401 X401
X401 X401
X190 X190
B23F
B23E
B26
B1
B25B (MF3 or MZ0)
B115 (MF3 or MZ0)
B75C
X50A
X50A
B150
K20
K20

5V and Low Reference Bus (2 of 2) Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

cardiagn.com
Fig. 3: 5V and Low Reference Bus (2 of 2) Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

2704 Manifold Absolute Pressure Sensor 5 Volt Reference
2704 BN/RD 2704 BN/RD
CAV_1 1
CAV_28 28
CONN_X3 X3
1274 Accelerator Pedal Position 5 Volt Reference (2)
CAV_1 1
CAV_16 16
CONN_X1 X1
1164 Accelerator Pedal Position 5 Volt Reference (1)
CAV_2 2
CAV_24 24
2701 Throttle Position Sensor 5 Volt Reference
2701_BN/RD 2701 BN/RD
CAV_E E
CAV_43 43
CONN_X2 X2
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

1274_BN/RD 1274 BN/RD

1164_WH/RD 1164 WH/RD
1274_BN/RD 1274 BN/RD
1164_WH/RD 1164 WH/RD
1274_BN/RD 1274 BN/RD
1164_WH/RD 1164 WH/RD
469 Manifold Absolute Pressure Sensor Low Reference
469_BK/GN 469 BK/GN
CAV_29 29
CONN_X3 X3
CAV_2 2
1272 Accelerator Pedal Position Low Reference (2)
1272 BK/VT 1272 BK/VT

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CAV_30 30
CONN_X1 X1
CAV_5 5
1271 Accelerator Pedal Position Low Reference (1)
1271_BK/BU 1271 BK/BU
CAV_38 38
CAV_4 4
1272_BK/VT 1272 BK/VT
1272_BK/VT 1272 BK/VT
1271_BK/BU 1271 BK/BU
1271_BK/VT 1271 BK/VT
2752 Throttle Position Sensor Low Reference
2752_BK/YE 2752 BK/YE
CAV_44 44
CONN X2 X2
CAV_C C
6753 Cam Phaser W Return Low Reference
6753_BN/WH 6753 BN/WH
CAV_29 29
CAV_1 1
6754 Cam Phaser X Return Low Reference
6754_BK/VT 6754 BK/VT
CAV_30 30
CAV_1 1
6281 Fuel Level Sensor Low Reference
6281_BK/GN 6281 BK/GN
CAV_27 27
CONN_X3 X3
C V 2
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

2
6281_BK/GN 6281 BK/GN
6281_BK/WH 6281 BK/WH
CAV_F F
CAV_22 22
2761 Coolant Temperature Sensor Low Reference
2761_BK/BU 2761 BK/BU
CAV_30 30
CAV_2 2
6813 Coolant Temperature Sensor #2 Low Reference
6813_BK/BU 6813 BK/BU
CAV_54 54
CONN X1 X1

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CAV_1 1
6813_BK/BU 6813 BK/BU
CAV_32 32
CONN_X1 X1
CAV_30 30
CONN_X3 X3
X190 X190
CAV_29 29
CAV_26 26
X200 X200
CAV_65 65
CAV_66 66
X200 X200
CAV_47 47
CAV 46 46
X190 X190
CAV 27 27
CAV_24 24
X401 X401
X190 X190
X200 X200
X200 X200
X190 X190
B74
B34B
B34A
B107
Q38
Q6F
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

Q6E
X50A
K20
B46

Engine Data Sensors - Pressure and Temperature Wiring Schematics

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Fig. 4: Engine Data Sensors - Pressure and Temperature Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

5294 Powertrain Main Relay Fused Supply (5)
5294_VT/BU 5294 VT/BU
CAV 5 5
CAV_7 7
CONN_X3 X3
492 Mass Air Flow Sensor Signal
492_GN/WH 492 GN/WH
CAV_3 3
CAV_3 3
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CONN_X1 X1
3201 Throttle Inlet Absolute Pressure Sensor 5V Reference
3201_WH/RD 3201 WH/RD
CAV_2 2
CAV_23 23
472 Intake Air Temperature Sensor Signal
472_BN/VT 472 BN/VT
CAV_8 8
CAV_45 45
Pre Throttle Air Temp and Press (TMAP) 5 Volt
7331
Reference
7331_BN/RD 7331 BN/RD
CAV_3 3

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CAV_25 25
Pre-Throttle Air Temp and Press (TMAP)
7329
Temperature Signal
7329_GY 7329 GY
CAV_2 2
CAV_46 46
CONN_X2 X2
2704 Manifold Absolute Pressure Sensor 5 Volt Reference
2704_BN/RD 2704 BN/RD
CAV_1 1
CAV_28 28
CONN_X3 X3
410 Engine Coolant Temperature Sensor Signal
410_BU 410 BU
CAV_1 1
CAV 46 46
150 Ground
150_BK 150 BK
CAV_4 4
4008 Humidity Sensor Signal
4008_GY/BU 4008 GY/BU
CAV_8 8
CONN_X1 X1
CAV_1 1
3200 Throttle Inlet Absolute Pressure Sensor Signal
3200_YE/WH 3200 YE/WH
CAV_9 9
CAV_6 6
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

2760 Intake Air Temperature Sensor Low Reference

2760_BK/VT 2760 BK/VT
CAV_31 31
CAV_7 7
Pre Throttle Air Temp and Press (TMAP) Air
7330
Pressure Signal
7330_GN 7330 GN
CAV_11 11
CAV_4 4
Pre Throttle Air Temp and Press (TMAP) Low
7332
Reference
7332 BK/GN 7332 BK/GN
CAV_39 39

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CAV 1 1
469 Manifold Absolute Pressure Sensor Low Reference
469_BK/GN 469 BK/GN
CAV_29 29
CONN_X3 X3
CAV_2 2
432 Manifold Absolute Pressure Sensor Signal
432_GN/WH 432 GN/WH
CAV_45 45
CAV_3 3
2761 Coolant Temperature Sensor Low Reference
2761_BK/BU 2761 BK/BU
CAV_30 30
CAV_2 2
2032 Coolant Temperature Sensor Signal
2032 GN/VT 2032 GN/VT
CAV_23 23
CONN_X1 X1
CAV_2 2
6813 Coolant Temperature Sensor #2 Low Reference
6813_BK/BU 6813 BK/BU
CAV_36 36
CAV_1 1
2032_GN/VT 2032 GN/VT
6813_BK/BU 6813 BK/BU
3000 Coolant Temperature Sensor #2 Signal
3000_YE/BK 3000 YE/BK
CAV_46 46
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CONN_X1 X1
CAV_31 31
CONN_X3 X3
6813_BK/BU 6813 BK/BU
CAV_32 32
CAV_30 30
X104 X104
CAV_2 2
CAV_1 1
G114 G114
F11UA F11UA 10A
X104 X104
K20

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B74
B34B
X50A
K20
X50A
B34A
B75C
B111B (LUV)
KR75

Engine Data Sensors - Oxygen Sensors Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

cardiagn.com
Fig. 5: Engine Data Sensors - Oxygen Sensors Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

5293 Powertrain Main Relay Fused Supply (4)
5293 RD/WH 5293 RD/WH
CAV_6 6
CONN_X3 X3
5293_RD/WH 5293 RD/WH
5293_RD/WH 5293 RD/WH
CAV_1 1
CAV_1 1
Heated Oxygen Sensor Heater Low Control Bank 1
3113
Sensor (1)
3113_GY/WH 3113 GY/WH
CAV 72 72
CONN_X2 X2
Heated Oxygen Sensor High Signal Bank 1 Sensor
1665
(1)
1665_BK/GN 1665 BK/GN
CAV_67 67
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

1664 Heated Oxygen Sensor Low Signal Bank 1 Sensor (1)

1664_BK/GN 1664 BK/GN
CAV_47 47
Heated Oxygen Sensor Heater Low Control Bank 1
1423
Sensor (2)
1423_BN/GY 1423 BN/GY
CAV_32 32
CONN_X3 X3
Heated Oxygen Sensor High Signal Bank 1 Sensor
1668
(2)
1668_GN 1668 GN
CAV 67 67
1669 Heated Oxygen Sensor Low Signal Bank 1 Sensor (2)

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1669 BK/GN 1669 BK/GN
CAV_68 68
CAV_2 2
CAV_4 4
CAV_3 3
CAV_2 2
CAV_4 4
CAV_3 3
F47UA F47UA 10A
TWIST_5.5 5.5
TWIST_5.5 5.5
B52A
B52B
K20
KR75
X50A

Engine Data Sensors - Throttle Controls Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

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Fig. 6: Engine Data Sensors - Throttle Controls Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

1164 Accelerator Pedal Position 5 Volt Reference (1)
1164 WH/RD 1164 WH/RD
CAV_24 24
CONN_X1 X1
CAV_2 2
1181 Right Rear Door Open Switch Signal
1181_YE/WH 1181 YE/WH
CAV_10 10
CAV_3 3
1271 Accelerator Pedal Position Low Reference (1)
1271_BK/BU 1271 BK/BU
CAV_38 38
CAV_4 4
1274 Accelerator Pedal Position 5 Volt Reference (2)
1274_BN/RD 1274 BN/RD
CAV_16 16
CAV_1 1
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

1162 Accelerator Pedal Position Signal (2)

1162_GN/WH 1162 GN/WH
CAV_2 2
CAV_6 6
1272 Accelerator Pedal Position Low Reference (2)
1272_BK/VT 1272 BK/VT
CAV_30 30
CAV_5 5
2071 Right Front Door Window Intrusion Sensor Signal
2071_BN/RD 2071 BN/RD
CAV_43 43
CONN_X2 X2
CAV E E

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485 Throttle Position Sensor Signal (1)
485_BN/GN 485 BN/GN
CAV_63 63
CAV_D D
2752 Throttle Position Sensor Low Reference
2752_BK/YE 2752 BK/YE
CAV_44 44
CAV_C C
486 Throttle Position Sensor Signal (2)
486_BN/BU 486 BN/BU
CAV_65 65
CAV_F F
582 Throttle Actuator Control Close
582_BN/WH 582 BN/WH
CAV 16 16
CAV_A A
581 Throttle Actuator Control Open
581_BN/RD 581 BN/RD
CAV_15 15
CAV_B B
1164_WH/RD 1164 WH/RD
1181_YE/WH 1181 YE/WH
1271_BK/BU 1271 BK/BU
1274_BN/RD 1274 BN/RD
1162_GN/WH 1162 GN/WH
1272_BK/VT 1272 BK/VT
1164_WH/RD 1164 WH/RD
1181_YE/WH 1181 YE/WH
1271 BK/BU
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

1271 BK/BU
1274_BN/RD 1274 BN/RD
1162_GN/WH 1162 GN/WH
1272_BK/VT 1272 BK/VT
X200 X200
CAV_46 46
CAV_36 36
CAV_54 54
CAV_47 47
CAV_37 37
CAV_55 55
X190 X190
CAV 26 26

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CAV_25 25
CAV_24 24
CAV_28 28
CAV_29 29
CAV_27 27
X200 X200
X190 X190
B107
Q38
K20

Camshaft, Crankshaft, and Knock Sensors, Camshaft Actuators Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

cardiagn.com
Fig. 7: Camshaft, Crankshaft, and Knock Sensors, Camshaft Actuators Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

5300 Camshaft Position Intake Sensor Supply Voltage (1)
5300 GY/BU 5300 GY/BU
CAV_1 1
CAV_40 40
CONN_X2 X2
5275 Camshaft Position Intake Sensor (1)
5275_YE/VT 5275 YE/VT
CAV_3 3
CAV_60 60
6457 Camshaft CAM X Supply Voltage
6457_GY/YE 6457 GY/YE
CAV_1 1
CAV_37 37
6264 Camshaft CAM X Signal
6264_VT/BK 6264 VT/BK
CAV_3 3
CAV_57 57
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

6270 Crankshaft 60X Sensor Voltage

6270_VT/BU 6270 VT/BU
CAV_1 1
CAV_36 36
5284 Camshaft Phaser Intake Solenoid (1)
5284_VT/BN 5284 VT/BN
CAV_2 2
CAV_11 11
5282 Camshaft Phaser Exhaust Solenoid (1)
5282_GY/BU 5282 GY/BU
CAV_2 2
CAV_10 10
5301 Camshaft Position Intake Sensor Low Reference (1)

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5301_BK/GN 5301 BK/GN
CAV_24 24
CONN_X2 X2
CAV_2 2
6267 Camshaft CAM X Ground
6267_BK/GY 6267 BK/GY
CAV_21 21
CAV_2 2
6272 Crankshaft 60X Sensor Low Reference
6272_BK/VT 6272 BK/VT
CAV_20 20
CAV_2 2
6271 Crankshaft 60X Sensor Signal
6271_GN 6271 GN
CAV 56 56
CAV_3 3
6753 Cam Phaser W Return Low Reference
6753_BN/WH 6753 BN/WH
CAV_29 29
CAV_1 1
6754 Cam Phaser X Return Low Reference
6754_BK/VT 6754 BK/VT
CAV_30 30
CAV_1 1
1716 Knock Sensor Low Reference (1)
1716_BK/YE 1716 BK/YE
CAV_49 49
CAV_2 2
496
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

Knock Sensor Signal (1)

496_VT/GY 496 VT/GY
CAV_69 69
CAV_1 1
TWIST_5.5 5.5
K20
B23F
B23E
B26
Q6F
Q6E
B68
K20

cardiagn.com
Fuel Controls - Fuel Injectors and Ignition Controls Wiring Schematics

Fig. 8: Fuel Controls - Fuel Injectors and Ignition Controls Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

5291 Powertrain Main Relay Fused Supply (2)
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CAV_A A
CAV_2 2
CONN_X3 X3
5291_RD/BU 5291 RD/BU
5291_RD/BU 5291 RD/BU
5291_RD/BU 5291 RD/BU
CAV_1 1
1744 Fuel Injector Control (1)
1744_BN/VT 1744 BN/VT
CAV_2 2
CONN_X2 X2
CAV_2 2
5291 RD/BU 5291 RD/BU

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CAV_1 1
1745 Fuel Injector Control (2)
1745_YE/WH 1745 YE/WH
CAV_5 5
CAV_2 2
5291_RD/BU 5291 RD/BU
CAV_1 1
1746 Fuel Injector Control (3)
1746_BN/YE 1746 BN/YE
CAV_3 3
CAV_2 2
5291_RD/BU 5291 RD/BU
CAV_1 1
844 Fuel Injector Control (4)
844 BN 844 BN
CAV_4 4
CAV 2 2
2121 Ignition Control (1)
2121_BU/VT 2121 BU/VT
CAV_D D
CAV_1 1
CONN_X2 X2
2122 Ignition Control (2)
2122_BU/WH 2122 BU/WH
CAV_E E
CAV_53 53
2123 Ignition Control (3)
2123_GN/BU 2123 GN/BU
C V F
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

F
CAV_17 17
2124 Ignition Control (4)
2124_YE/BU 2124 YE/BU
CAV_G G
CAV_33 33
2129 Ignition Control Low Reference Bank 1
2129_BK/BU 2129 BK/BU
CAV_C C
CAV_35 35
250 Ground
250_BK 250 BK
CAV B B

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G112 G112
F9UA F9UA 15A
J114 J114
Q17B
Q17C
Q17D
K20
Q17A
X50A
A90 Logic
KR75
K35

Fuel Controls - Fuel Pump Controls Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

cardiagn.com
Fig. 9: Fuel Controls - Fuel Pump Controls Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

739 Run/Crank Ignition 1 Voltage
739 VT/BK 739 VT/BK
CAV_21 21
CAV_15 15
CONN_X2 X2
1740 Battery Positive Voltage
1740_RD/GY 1740 RD/GY
CAV_1 1
CAV_74 74
Serial Data Communication
5986
Enable
5986 WH/BU 5986 WH/BU
CAV_8 8
High Speed GMLAN Serial
2500
Data (+) (1)
2500_BU 2500 BU
CAV_5 5
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

High Speed GMLAN Serial

2501
Data (-) (1)
2501_WH 2501 WH
CAV 17 17
2500_BU 2500 BU
CAV_6 6
2501_WH 2501 WH
CAV_18 18
Fuel Pump Primary Relay
465
Control
465_GN/GY 465 GN/GY
CAV 20 20
CAV_28 28

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CONN X1 X1
Shutter Valve Solenoid
3437
Control
3437_GY/BK 3437 GY/BK
CAV_3 3
3437_GY/BK 3437 GY/BK
CAV 12 12
2350 Ground
2350 BK 2350 BK
CAV_25 25
Fuel Line Pressure Sensor 5V
7445
Reference
7445 BN/RD 7445 BN/RD
CAV_3 3
CAV 22 22
Fuel Line Pressure Sensor
7446
Signal
7446_BU/WH 7446 BU/WH
CAV_1 1
CAV_10 10
7445_BN/RD 7445 BN/RD
7446_BU/BN 7446 BU/BN
Fuel Line Pressure Sensor
7447
Low Reference
7447_BK/YE 7447 BK/YE
CAV_2 2
CAV_23 23
7447_BK/YE 7447 BK/YE
120 Fuel Pump Supply Voltage
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

120_GY 120 GY
CAV_1 1
CAV_13 13
120_GY 120 GY
1580 Fuel Pump Low Reference
1580_BK/GN 1580 BK/GN
CAV_2 2
CAV_38 38
1580_BK/GN 1580 BK/GN
120_BK 120 BK
CAV_24 24
Fuel System Control Module
7444
Shield

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7444_BARE 7444 BARE
465_GN/GY 465 GN/GY
CAV_15 15
X401 X401
CAV_H H
CAV K K
CAV_L L
CAV A A
CAV_S S
G402 G402
F18UA F18UA 10A
F67UA F67UA 20A
J404 J404
X190 X190
TWIST_5.5 5.5
TWIST_5.5 5.5
X401 X401
K20
B47
W7
K27
Data Communication
Data_Communication_Schematics_REF
Schematics
G12
A7
X50A
KR73

Fuel Controls - Evaporative Emission and Device Controls Wiring Schematics

 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

cardiagn.com
Fig. 10: Fuel Controls - Evaporative Emission and Device Controls Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

5372 Canister Valve Solenoid
5372 BU 5372 BU
CAV_35 35
CONN_X3 X3
5372_RD/BU 5372 RD/BU
CAV_1 1
CAV_M M
CAV_30 30
Powertrain Main Relay Fused
5293
Supply (4)
5293_RD/WH 5293 RD/WH
CAV 1 1
CAV_6 6
5293_RD/WH 5293 RD/WH
5372_BU 5372 BU
EVAP Canister Vent Solenoid
1310
Control
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

1310_WH 1310 WH
CAV_56 56
CONN_X1 X1
CAV_2 2
1310_WH 1310 WH
1310_WH 1310 WH
CAV_N N
CAV_21 21
Fuel Tank Pressure Sensor 5
2709
Volt Reference
2709_YE/RD 2709 YE/RD
CAV_43 43
CAV_3 3

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Fuel Tank Pressure Sensor
890
Signal
890_BU/WH 890 BU/WH
CAV_63 63
CAV_1 1
Fuel Level Sensor Low
6281
Reference
6281_BN/GN 6281 BN/GN
CAV 27 27
CAV_2 2
6281_BN/GN 6281 BN/GN
2709_YE/RD 2709 YE/RD
890_BU/WH 890 BU/WH
6281_BN/GN 6281 BN/GN
6281_BN/GN 6281 BN/GN
CAV_18 18
2709_BN/RD 2709 BN/RD
890_BU/WH 890 BU/WH
6281_BK/WH 6281 BK/WH
5293_RD/WH 5293 RD/WH
CAV_2 2
5293_RD/WH 5293 RD/WH
CAV_2 2
5293 RD/WH 5293 RD/WH
CAV_2 2
Thermostat Engine Cool
6814
Control
6814_BU 6814 BU
CAV_14 14
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CONN_X2 X2
CAV_2 2
EVAP Canister Purge
428
Solenoid Control
428_GN/BU 428 GN/BU
CAV_10 10
CONN_X3 X3
CAV_1 1
Turbo Waste Gate Solenoid
3058
Control Bank (1)
3058_BN/RD 3058 BN/RD
CAV 15 15
CAV_1 1

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Turbo Bypass Solenoid
3060
Control Bank (1)
3060_GN 3060 GN
CAV_13 13
CAV_1 1
X401 X401
CAV D D
CAV_E E
CAV F F
X190 X190
CAV_20 20
CAV_19 19
F47UA F47UA 10A
F4UA F4UA 10A
X401 X401
X190 X190
X401 X401
X190 X190
J127 J127
J111 J111
X401 X401
X190 X190
Q12
K20
Q40 (LUV)
Q13
B150
Instrument_Cluster_Schematics_REF Instrument Cluster Schematics
Q42 (LUV)
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

E41
X50A
KR75

Controlled/Monitored Subsystem References Wiring Schematics

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Fig. 11: Controlled/Monitored Subsystem References Wiring Schematics
Courtesy of GENERAL MOTORS COMPANY

Callout Component Name

A/C Pressure Sensor 5 Volt
2700
Reference
2700_BN/RD 2700 BN/RD
CAV_26 26
CONN_X1 X1
A/C Refrigerant Pressure
5514
Sensor Low Reference
5514_BK/BN 5514 BK/BN
CAV_13 13
A/C Refrigerant Pressure
380
Sensor Signal
380 GN 380 GN
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CAV_12 12
Output Speed (Digital) 5V
3097
Sensor Return
3097 WH/BK 3097 WH/BK
CAV_19 19
CONN_X3 X3
Output Speed (Digital) 5V
3096
Sensor Reference
3096_GY/BK 3096 GY/BK
CAV_35 35
Output Speed (Digital)
3098
Signal
3098_GN 3098 GN

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CAV_55 55
Clutch Apply Sensor
6109
Voltage Reference
6109_GY/RD 6109 GY/RD
CAV_38 38
Clutch Apply Sensor Low
6110
Reference
6110_BK/GY 6110 BK/GY
CAV_22 22
6111 Clutch Apply Sensor Signal
6111_YE 6111 YE
CAV_58 58
Park Neutral Position
275
Switch Park Signal
275_GN 275 GN
CAV 34 34
CONN_X1 X1
High Speed Cooling Fan
473
Relay Control
473_BN/YE 473 BN/YE
CAV_54 54
Low Speed Cooling Fan
335
Relay Control
335_GN/VT 335 GN/VT
CAV_41 41
HVAC SYSTEM-AIR
CONDITIONER FRT,
C67
ELECTRONIC
CONTROLS
HVAC SYSTEM-AIR
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CONDITIONER FRT,
C68 AUTO, ELECTRONIC
CONTROLS
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.353 2ND,
MR5
1.475 3RD, 1.067 4TH,
0.875 5TH, 0.744 6TH,

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M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.353 2ND,
MR5
1.475 3RD, 1.067 4TH,
0.875 5TH, 0.744 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.353 2ND,
MR5
1.475 3RD, 1.067 4TH,
0.875 5TH, 0.744 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

4.273 1ST, 2.353 2ND,

1.475 3RD, 1.067 4TH,
MR5
0.875 5TH, 0.744 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.353 2ND,
MR5
1.475 3RD, 1.067 4TH,

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0.875 5TH, 0.744 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.353 2ND,
MR5
1.475 3RD, 1.067 4TH,
0.875 5TH, 0.744 6TH,
M32-6 WR
TRANSMISSION-AUTO
MH8
6 SPD, HMD, X23F
25 Charge Indicator Control
25_BN 25 BN
CAV_47 47
CONN_X1 X1
Starter Enable Relay
625
Control
625_YE/BK 625 YE/BK
CAV_27 27
Generator Field Duty Cycle
23
Signal
23_GY 23 GY
CAV_17 17
CONN_X3 X3
231 Oil Pressure Switch Signal
231_YE/BU 231 YE/BU
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

CAV_31 31
CONN_X2 X2
Primary Fuel Level Sensor
1589
Signal
1589_BU/VT 1589 BU/VT
CAV_64 64
CONN_X3 X3
Fuel Level Sensor Low
6281
Reference
6281_BN/GN 6281 BN/GN
CAV_27 27
Cruise/ETC/TCC Brake
6311
Signal

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6311_WH/BU 6311 WH/BU
CAV_33 33
CONN_X1 X1
5007 Reverse Switch Signal
5007_GN/WH 5007 GN/WH
CAV_1 1
CONN X3 X3
Brake Position Sensor 5
5381
Volt Reference
5381_WH/RD 5381 WH/RD
CAV_38 38
CONN_X3 X3
Brake Position Sensor Low
5382
Reference
5382_BK/BN 5382 BK/BN
CAV_22 22
Brake Position Sensor
5380
Signal
5380_BU/YE 5380 BU/YE
CAV_58 58
TRANSMISSION-MAN 6
SPD, OPEL, 76.5 MM,
4.273 1ST, 2.158 2ND,
MF3
1.302 3RD, 0.959 4TH,
0.744 5TH, 0.614 6TH,
M32-6 WR

TRANSMISSION-MAN 6
MR5 SPD, OPEL, 76.5 MM,
4.273 1ST, 2.353 2ND,
1.475 3RD, 1.067 4TH,
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Schematic and Routing Diagrams - Engine
Controls Schematics - Cruze

0.875 5TH, 0.744 6TH,

M32-6 WR
TRANSMISSION-AUTO
MH8
6 SPD, HMD, X23F
TRANSMISSION-AUTO
MH8
6 SPD, HMD, X23F
TRANSMISSION-AUTO
MH8
6 SPD, HMD, X23F
K20
HVAC_Schematics_REF HVAC Schematics
Automatic Transmission
Automatic_Transmission_Controls_Schematics_REF
Controls Schematics
Engine_Cooling_Schematics_REF Engine Cooling Schematics

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Exterior_Lights_Schematics_REF Exterior Lights Schematics
Manual Transmission
Manual_Transmission_Schematics_REF
Schematics
Instrument Cluster
Instrument_Cluster_Schematics_REF
Schematics
Exterior_Lights_Schematics_REF Exterior Lights Schematics
Starting and Charging
Starting_and_Charging_Schematics_REF
Schematics
 2013 Chevrolet Cruze
2013 ENGINE Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

2013 ENGINE

Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

SPECIAL TOOLS AND EQUIPMENT

SPECIAL TOOLS

Illustration Tool Number/Description

CH-34730-2C
J-34730-2C
Injector Test Lamp

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CH-35800-A
J-35800-A
Fuel Injector Cleaner

CH-39021-380
J-39021-380
Fuel Injector Harness Adapter

CH-39021-450
J-39021-450
Fuel Injector Harness Adapter

CH-41415-30
J-41415-30
Fuel Tank Cap Adapter
South America - Use Local Equivalent

CH-41769-1
Fuel Line Quick Connect Separator 3/8

CH-41769-2
 2013 Chevrolet Cruze
2013 ENGINE Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

Fuel Line Quick Connect Separator 5/16

CH-42220
J-42220
Universal 12 Volt Leak Detection Lamp

CH-42242
J-42242

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Fuel Pressure Gauge Adapter

CH-42960-2
J-42960-2
Fuel Flapper Door Holder

CH-42982
J-42982
Fuel Pressure Gauge Adapter

CH-43178
J-43178
Fuel Line Disconnect Tool

CH-44175
J-44175
Fuel Composition Testers
South America - Use Local Equivalent

CH-45004
J-45004
Fuel Tank Drain Hose
South America- Use Local Equivalent
 2013 Chevrolet Cruze
2013 ENGINE Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

CH-45722
J-45722
Fuel Sender Lock Ring Wrench

CH-47831
Fuel Line Disconnect Tool

CH-47976

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Active Fuel Injector Tester (AFIT)

CH-47976-60
AFIT Harness Adapter

CH-47976-75
Fuel Injector Harness Adapter

CH-48027
Digital Pressure gauge
South America - Use Local Equivalent

CH-48096
EVAP Service Access Port Tool

EL-26792
J-26792
HEI Spark Tester
South America - Use Local Equivalent
 2013 Chevrolet Cruze
2013 ENGINE Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

EL 36169-HD
J 36169-HD
Heavy Duty Fused Jumper

EL-39021
J-39021
Fuel Injector Coil and Balancer Tester

EL-39021-210

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J-39021-210
Injector Tester Adapter Box

EL-39021-460
J-39021-460
Fuel Injector Test Adapter

EN-24460-A
J-24460-A
Cooling System Pressure Tester

EN-36012-A
J-36012-A
Ignition System Diagnosis Harness

EN-37287
J-37287
Fuel Line Shut-Off Adapters (Flex Fuel)

EN-38522
J-38522
Variable Signal Generator
 2013 Chevrolet Cruze
2013 ENGINE Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

EN-41413-VLV
J-41413-VLV
EVAP Service Port Vent Fitting
South America - Use Local Equivalent

EN-42598-B

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J-42598-B
Vehicle Data Recorder

EN-44602
J-44602
Injector Test Adapter

EN-47969
Fuel Supply Diagnostic Hose

GE-23738-A
J-23738-A
Vacuum Pump

GE-41413-A
J-41413-A
Evaporative Emissions System Tester (EEST)
South America - Use Local Equivalent

GE-41413-300
J-41413-300
EVAP Cap and Plug Kit
South America - Use Local Equivalent
 2013 Chevrolet Cruze
2013 ENGINE Engine Controls and Fuel - 1.4L LUV - Special Tools and Equipment - Special Tools - Cruze

GE-41413-320
J-41413-320
EVAP Cap and Plug Kit
South America - Use Local Equivalent

GE-41413-SPT
J-41413-SPT
High Intensity White Light
South America - Use Local Equivalent

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 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Specifications - Cruze

2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Specifications - Cruze

SPECIFICATIONS
TEMPERATURE VERSUS RESISTANCE (ECT)

Temperature Versus Resistance (ECT)

°C °F Sensor Resistance
Temperature vs Resistance Values (Approximate)
100 212 155
90 194 208
80 176 283

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70 158 392
60 140 552
50 122 793
45 113 958
40 104 1165
35 95 1425
30 86 1755
25 77 2176
20 68 2717
15 59 3428
10 50 4356
5 41 5578
0 32 7198
-5 23 9362
-10 14 12278
-15 5 16229
-20 -4 21653
-30 -22 39631
-40 -40 75529

TEMPERATURE VERSUS RESISTANCE - INTAKE AIR TEMPERATURE SENSOR (BOSCH

SENSOR)

Temperature Versus Resistance - Intake Air Temperature Sensor (Bosch Sensor)

Temperature Resistance Minimum Resistance Maximum
C°/F° Ohms Ohms
Bosch Intake Air Temperature (IAT) Sensor
-40/-40 36, 595 42, 717
-20/-4 12, 947 14, 744
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Specifications - Cruze

-10/14 8, 082 9, 105

0/32 5, 191 5, 789
20/68 2, 309 2, 530
25/77 1, 913 2, 088
40/104 1, 122 1, 210
60/140 587 625
80/176 328 345
100/212 193 201
120/248 119 125
140/284 76 81

TEMPERATURE VERSUS RESISTANCE - INTAKE AIR TEMPERATURE SENSOR (DELCO

SENSOR)

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Temperature Versus Resistance - Intake Air Temperature Sensor (Delco Sensor)
Temperature Resistance Minimum Resistance Maximum
C°/F° Ohms Ohms
Delco Intake Air Temperature (IAT) Sensor
-40/-40 42, 661 54, 224
-20/-4 14, 039 17, 333
-10/14 8, 529 10, 399
0/32 5, 358 6, 458
20/68 2, 308 2, 727
25/77 1, 904 2, 236
40/104 1, 113 1, 292
60/140 571 655
80/176 309 351
100/212 175 197
120/248 103 116
140/284 67 73
150/302 54 59

ALTITUDE VERSUS BAROMETRIC PRESSURE

Altitude Versus Barometric Pressure

Barometric Pressure Barometric Pressure
Altitude Measured in Altitude Measured in Measured in Measured in Pounds
Meters (m) Feet (ft) Kilopascals (kPa) Per Square Inch (PSI)
Determine your altitude by contacting a local weather station or by using another reference source.
4, 267 14, 000 56-64 8.1-9.3
3, 962 13, 000 58-66 8.4-9.6
3, 658 12, 000 61-69 8.8-10.0
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Specifications - Cruze

3, 353 11, 000 64-72 9.3-10.4

3, 048 10, 000 66-74 9.6-10.7
2, 743 9, 000 69-77 10.0-11.2
2, 438 8, 000 71-79 10.3-11.5
2, 134 7, 000 74-82 10.7-11.9
1, 829 6, 000 77-85 11.2-12.3
1, 524 5, 000 80-88 11.6-12.8
1, 219 4, 000 83-91 12.0-13.2
914 3, 000 87-95 12.6-13.8
610 2, 000 90-98 13.1-14.2
305 1, 000 94-102 13.6-14.8
0 0 Sea Level 96-104 13.9-15.1
-305 -1, 000 101-105 14.6-15.2

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IGNITION SYSTEM SPECIFICATIONS

Ignition System Specifications

Application Specification
Ignition Type Ignition Coil Module
Firing Order 1-3-4-2
Spark Plug Torque Refer to Fastener Tightening Specifications
Spark Plug Gap 0.70 mm (0.028 in)
Spark Plug Type Refer to Electronic Parts Catalogue

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

Specification
Application Metric English
Accelerator Pedal Position Sensor Bolt 10 N.m 89 lb in
Camshaft Position Actuator Solenoid Valve Bolts 8 N.m 71 lb in
Camshaft Position Sensor Bolts 8 N.m 71 lb in
Charge Air Cooler Outlet Air Hose Bolt 8 N.m 71 lb in
Crankshaft Position Sensor Bolt 8 N.m 71 lb in
Engine Control Module Bracket Nuts 9 N.m 80 lb in
Engine Oil Pressure Indicator Switch 20 N.m 15 lb ft
Fuel Injection Fuel Rail Bolt 7 N.m 62 lb in
Fuel Pressure Sensor 19 N.m 14 lb ft
Fuel Tank Filler Pipe Bracket Bolt 9 N.m 80 lb in
Fuel Tank Filler Pipe Ground Bolt 9 N.m 80 lb in
Fuel Tank Strap Bolts 23 N.m 17 lb ft
Heated Oxygen Sensor 1 and 2 40 N.m 30 lb ft
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Specifications - Cruze

Ignition Coil Bolts 8 N.m 71 lb in

Knock Sensor 20 N.m 15 lb ft
Spark Plugs 25 N.m 18 lb ft
Throttle Body Bolts 9 N.m 80 lb in

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 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

2013 ENGINE PERFORMANCE

Engine Controls and Fuel - 1.4L LUV - Cruze

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX
DTC Description
DTC P0010 Intake Camshaft Position Actuator
Solenoid Valve Control Circuit
DTC P0013 Exhaust Camshaft Position Actuator
Solenoid Valve Control Circuit
DTC P2088 Intake Camshaft Position Actuator
Solenoid Control Circuit Low Voltage
DTC P0010, P0013, or P2088-P2091

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DTC P2089 Intake Camshaft Position Actuator
Solenoid Control Circuit High Voltage
DTC P2090 Exhaust Camshaft Position Actuator
Solenoid Control Circuit Low Voltage
DTC P2091 Exhaust Camshaft Position Actuator
Solenoid Control Circuit High Voltage
DTC P0011 Intake Camshaft Position System
Performance
DTC P0011 or P0014
DTC P0014 Exhaust Camshaft Position System
Performance
DTC P0016 Crankshaft Position - Intake Camshaft
Position Not Plausible
DTC P0016 or P0017
DTC P0017 Crankshaft Position - Exhaust
Camshaft Position Not Plausible
DTC P0030 HO2S Heater Control Circuit Sensor 1
DTC P0031 HO2S Heater Control Circuit Low
Voltage Sensor 1
DTC P0032 HO2S Heater Control Circuit High
Voltage Sensor 1
DTC P0036 HO2S Heater Control Circuit Sensor 2
DTC P0030-P0032, P0036-P0038, P0053, P0054, DTC P0037 HO2S Heater Control Circuit Low
P0135, or P0141 Voltage Sensor 2
DTC P0038 HO2S Heater Control Circuit High
Voltage Sensor 2
DTC P0053 HO2S Heater Resistance Sensor 1
DTC P0054 HO2S Heater Resistance Sensor 2
DTC P0135 HO2S Heater Performance Sensor 1
DTC P0141 HO2S Heater Performance Sensor 2
DTC P0033 Turbocharger Bypass Solenoid Valve
Control Circuit
DTC P0033-P0035 DTC P0034 Turbocharger Bypass Solenoid Valve
Control Circuit Low Voltage
DTC P0035 Turbocharger Bypass Solenoid Valve
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

Control Circuit High Voltage

DTC P0068 Throttle Body Air Flow Performance
DTC P0068 or P1101
DTC P1101 Intake Air Flow System Performance
DTC P0096 Intake Air Temperature (IAT) Sensor 2
Performance
DTC P0096 or P0111
DTC P0111 Intake Air Temperature (IAT) Sensor 1
Performance
DTC P0097 Intake Air Temperature (IAT) Sensor 2
Circuit Low Voltage
DTC P0097 or P0098
DTC P0098 Intake Air Temperature (IAT) Sensor 2
Circuit High Voltage
DTC P00C7 Intake Air Pressure Measurement
DTC P00C7
System - Multiple Sensors Not Plausible
DTC P00EA Intake Air Temperature (IAT) Sensor

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3 Circuit Low Voltage
DTC P00EA or P00EB
DTC P00EB Intake Air Temperature (IAT) Sensor 3
Circuit High Voltage
DTC P00E9 Intake Air Temperature (IAT) Sensor 3
DTC P00E9
Circuit Performance
DTC P0101 Mass Air Flow (MAF) Sensor
DTC P0101
Performance
DTC P0102 Mass Air Flow (MAF) Sensor Circuit
Low Frequency
DTC P0102 or P0103
DTC P0103 Mass Air Flow (MAF) Sensor Circuit
High Frequency
DTC P0106 Manifold Absolute Pressure (MAP)
DTC P0106
Sensor Performance
DTC P0107 Manifold Absolute Pressure (MAP)
Sensor Circuit Low Voltage
DTC P0107 or P0108
DTC P0108 Manifold Absolute Pressure (MAP)
Sensor Circuit High Voltage
DTC P0112 Intake Air Temperature (IAT) Sensor
Circuit Low Voltage
DTC P0113 Intake Air Temperature (IAT) Sensor
DTC P0112, P0113, or P0114
Circuit High Voltage
DTC P0114 Intake Air Temperature (IAT) Sensor
Circuit Intermittent
DTC P0116 Engine Coolant Temperature (ECT)
DTC P0116
Sensor Performance
DTC P0117 Engine Coolant Temperature (ECT)
Sensor Circuit Low Voltage
DTC P0118 Engine Coolant Temperature (ECT)
DTC P0117, P0118, or P0119
Sensor Circuit High Voltage
DTC P0119 Engine Coolant Temperature (ECT)
Sensor Circuit Intermittent
DTC P0121 Throttle Position Sensor 1 Performance
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

DTC P0122 Throttle Position Sensor 1 Circuit Low

Voltage
DTC P0123 Throttle Position Sensor 1 Circuit High
Voltage
DTC P0121-P0123, P0222, P0223, or P2135 DTC P0222 Throttle Position Sensor 2 Circuit Low
(LUV) Voltage
DTC P0223 Throttle Position Sensor 2 Circuit High
Voltage
DTC P2135 Throttle Position Sensors 1-2 Not
Plausible
DTC P0128 Engine Coolant Temperature (ECT)
DTC P0128
Below Thermostat Regulating Temperature
DTC P0131 HO2S Circuit Low Voltage Sensor 1
DTC P0132 HO2S Circuit High Voltage Sensor 1

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DTC P0134 HO2S Circuit Insufficient Activity
DTC P0131, P0132, P0134, P0137, P0138, or Sensor 1
P0140 DTC P0137 HO2S Circuit Low Voltage Sensor 2
DTC P0138 HO2S Circuit High Voltage Sensor 2
DTC P0140 HO2S Circuit Insufficient Activity
Sensor 2
DTC P0133 HO2S Slow Response Sensor 1
DTC P013A HO2S Slow Response Rich to Lean
Sensor 2
DTC P013B HO2S Slow Response Lean to Rich
Sensor 2
DTC P013E HO2S Delayed Response Rich to Lean
Sensor 2
DTC P0133, P013A, P013B, P013E, P013F,
DTC P013F HO2S Delayed Response Lean to Rich
P015A, P015B, P2270, or P2271
Sensor 2
DTC P015A HO2S Delayed Response Rich to Lean
Sensor 1
DTC P015B HO2S Delayed Response Lean to Rich
Sensor 1
DTC P2270 HO2S Signal Stuck Lean Sensor 2
DTC P2271 HO2S Signal Stuck Rich Sensor 2
DTC P0171 Fuel Trim System Lean
DTC P0171 or P0172
DTC P0172 Fuel Trim System Rich
DTC P018B Fuel Pressure Sensor Performance
DTC P018C Fuel Pressure Sensor Circuit Low
DTC P018B-P018D Voltage
DTC P018D Fuel Pressure Sensor Circuit High
Voltage
DTC P0201 Cylinder 1 Injector Control Circuit
DTC P0202 Cylinder 2 Injector Control Circuit
DTC P0203 Cylinder 3 Injector Control Circuit
DTC P0204 Cylinder 4 Injector Control Circuit
DTC P0261 Cylinder 1 Injector Control Circuit Low
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

Voltage
DTC P0262 Cylinder 1 Injector Control Circuit
High Voltage
DTC P0264 Cylinder 2 Injector Control Circuit Low
Voltage
DTC P0265 Cylinder 2 Injector Control Circuit
High Voltage
DTC P0201, P0202, P0203, P0204, P0261, P0262,
DTC P0267 Cylinder 3 Injector Control Circuit Low
P0264, P0265, P0267, P0268, P0270, or P0271
Voltage
DTC P0268 Cylinder 3 Injector Control Circuit
High Voltage
DTC P0270 Cylinder 4 Injector Control Circuit Low
Voltage
DTC P0271 Cylinder 4 Injector Control Circuit
High Voltage

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DTC P0231 Fuel Pump Control Circuit Low
Voltage
DTC P0231, P0232, or P023F DTC P0232 Fuel Pump Control Circuit High
Voltage
DTC P023F Fuel Pump Control Circuit
DTC P0234 Engine Overboost
DTC P0234 or P0299
DTC P0299 Engine Underboost
DTC P0236 Turbocharger Boost Sensor
DTC P0236
Performance
DTC P0237 Turbocharger Boost Sensor Circuit
Low Voltage
DTC P0237 or P0238
DTC P0238 Turbocharger Boost Sensor Circuit
High Voltage
DTC P0243 Turbocharger Wastegate Solenoid
Valve Control Circuit
DTC P0245 Turbocharger Wastegate Solenoid
DTC P0243, P0245, or P0246
Valve Control Circuit Low Voltage
DTC P0246 Turbocharger Wastegate Solenoid
Valve Control Circuit High Voltage
DTC P025A Fuel Pump Control Module Enable
DTC P025A
Circuit
DTC P0300 Engine Misfire Detected
DTC P0301 Cylinder 1 Misfire Detected
DTC P0300-P0304 DTC P0302 Cylinder 2 Misfire Detected
DTC P0303 Cylinder 3 Misfire Detected
DTC P0304 Cylinder 4 Misfire Detected
DTC P0315 Crankshaft Position System Variation
DTC P0315
Not Learned

DTC P0324 Knock Sensor Module Performance

DTC P0324, P0326, or P06B6
DTC P0326 Knock Sensor Performance
DTC P06B6 Control Module Knock Sensor
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

Processor Performance
DTC P0325 Knock Sensor Circuit
DTC P0325, P0327, or P0328 DTC P0327 Knock Sensor Circuit Low Voltage
DTC P0328 Knock Sensor Circuit High Voltage
DTC P0335 Crankshaft Position Sensor Circuit
DTC P0335 or P0336 DTC P0336 Crankshaft Position Sensor
Performance
DTC P0340 Intake Camshaft Position Sensor
Circuit
DTC P0341 Intake Camshaft Position Sensor
Performance
DTC P0340, P0341, P0365, or P0366
DTC P0365 Exhaust Camshaft Position Sensor
Circuit
DTC P0366 Exhaust Camshaft Position Sensor

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Performance
DTC P0351 Ignition Coil 1 Control Circuit
DTC P0352 Ignition Coil 2 Control Circuit
DTC P0351-P0354
DTC P0353 Ignition Coil 3 Control Circuit
DTC P0354 Ignition Coil 4 Control Circuit
DTC P0420 DTC P0420 Catalyst System Low Efficiency
DTC P0442 Evaporative Emission (EVAP) System
DTC P0442
Small Leak Detected
DTC P0443 Evaporative Emission (EVAP) Purge
DTC P0443
Solenoid Valve Control Circuit
DTC P0446 Evaporative Emission (EVAP) Vent
DTC P0446
System Performance
DTC P0449 Evaporative Emission (EVAP) Vent
DTC P0449
Solenoid Valve Control Circuit
DTC P0451 Fuel Tank Pressure Sensor
Performance
DTC P0452 Fuel Tank Pressure Sensor Circuit Low
Voltage
DTC P0451-P0454
DTC P0453 Fuel Tank Pressure Sensor Circuit High
Voltage
DTC P0454 Fuel Tank Pressure Sensor Circuit
Intermittent
DTC P0455 Evaporative Emission (EVAP) System
DTC P0455
Large Leak Detected
DTC P0496 Evaporative Emission (EVAP) System
DTC P0496
Flow During Non-Purge
DTC P0506 Idle Speed Low
DTC P0506 or P0507
DTC P0507 Idle Speed High
DTC P0601 Control Module Read Only Memory
Performance
DTC P0602 Control Module Not Programmed
DTC P0603 Control Module Long Term Memory
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

Reset
DTC P0604 Control Module Random Access
DTC P0601-P0604, P0606, or P062F (Fuel Pump Memory Performance
Control Module) DTC P0606 Control Module Processor Performance
DTC P062F Control Module Long Term Memory
Performance
DTC P0601 Control Module Read Only Memory
Performance
DTC P0602 Control Module Not Programmed
DTC P0603 Control Module Long Term Memory
Reset
DTC P0604 Control Module Random Access
Memory Performance
DTC P0601-P0604, P0606, P062B, P062F, P0630, DTC P0606 Control Module Processor Performance
P16F3, or P262B (ECM) DTC P062F Control Module Long Term Memory

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Performance
DTC P0630 VIN Not Programmed or Mismatched -
Engine Control Module (ECM)
DTC P16F3 Control Module Redundant Memory
Performance
DTC P262B Control Module Power Off Timer
Performance
DTC P0627 Fuel Pump Enable Circuit
DTC P0628 Fuel Pump Enable Circuit Low Voltage
DTC P0627-P0629
DTC P0629 Fuel Pump Enable Circuit High
Voltage
DTC P0641 or P06A6 (Fuel Pump Control DTC P0641 5 V Reference Circuit
Module) DTC P06A6 5 V Reference 1 Performance
DTC P0641 5V Reference 1 Circuit
DTC P0651 5V Reference 2 Circuit
DTC P0641, P0651, P0697, or P06A3 (ECM)
DTC P0697 5V Reference 3 Circuit
DTC P06A3 5V Reference 4 Circuit
DTC P0650 Malfunction Indicator Lamp (MIL)
DTC P0650
Control Circuit
DTC P0685 Engine Controls Ignition Relay Control
Circuit
DTC P0686 Engine Controls Ignition Relay Control
Circuit Low Voltage
DTC P0687 Engine Controls Ignition Relay Control
DTC P0685, P0686, P0687, P0689, P0690, or
Circuit High Voltage
P1682
DTCP0689 Engine Controls Ignition Relay
Feedback Circuit Low Voltage
DTC P0690 Engine Controls Ignition Relay
Feedback Circuit High Voltage
DTC P1682 Ignition 1 Switch Circuit 2
DTC P069E Fuel Pump Control Module Requested
DTC P069E
MIL Illumination
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

DTC P0700 Transmission Control Module

DTC P0700
Requested MIL Illumination
DTC P11C2 Intake Air Humidity Sensor Circuit
Low Voltage
DTC P11C2 or P11C3
DTC P11C3 Intake Air Humidity Sensor Circuit
High Voltage
DTC P064A Fuel Pump Control Module
Performance
DTC P1255 or P064A
DTC P1255 Fuel Pump Control Module Driver
High Temperature
DTC P1400 Cold Start Emission Reduction Control
DTC P1400
System
DTC P150C Transmission Control Module Engine
DTC P150C
Speed Request Signal Message Counter Incorrect

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DTC P1516 Throttle Actuator Control (TAC)
Module Throttle Actuator Position Performance
DTC P2101 Throttle Actuator Position Performance
DTC P1516, P2101, P2119, or P2176
DTC P2119 Throttle Closed Position Performance
DTC P2176 Minimum Throttle Position Not
Learned
DTC P2096 Post Catalyst Fuel Trim System Low
DTC P2096
Limit
DTC P2097 Post Catalyst Fuel Trim System High
DTC P2097
Limit
DTC P2122 Accelerator Pedal Position (APP)
Sensor 1 Circuit Low Voltage
DTC P2123 Accelerator Pedal Position (APP)
Sensor 1 Circuit High Voltage
DTC P2127 Accelerator Pedal Position (APP)
DTC P2122, P2123, P2127, P2128, or P2138
Sensor 2 Circuit Low Voltage
DTC P2128 Accelerator Pedal Position (APP)
Sensor 2 Circuit High Voltage
DTC P2138 Accelerator Pedal Position (APP)
Sensors 1-2 Not Plausible
DTC P2199 Intake Air Temperature (IAT) Sensors
DTC P2199
1-2 Not Plausible
DTC P219A DTC P219A Fuel Trim Cylinder Balance
DTC P2227 Barometric Pressure (BARO) Sensor
Performance
DTC P2228 Barometric Pressure (BARO) Sensor
Circuit Low Voltage
DTC P2227-P2230
DTC P2229 Barometric Pressure (BARO) Sensor
Circuit High Voltage
DTC P2230 Barometric Pressure (BARO) Sensor
Circuit Erratic - (If used)
DTC P2261 DTC P2261 Turbocharger Bypass Valve Stuck
 2013 Chevrolet Cruze
2013 ENGINE PERFORMANCE Engine Controls and Fuel - 1.4L LUV - Cruze

DTC P2534 Ignition On/Start Switch Circuit Low

DTC P2534 (Fuel Pump Control Module)
Voltage
DTC P2544 Transmission Torque Request Signal
DTC P2544
Message Counter Incorrect
DTC P2635 (Fuel Pump Control Module) DTC P2635 Fuel Pump Flow Performance

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