GROUP 13EA

ELECTRONICALLY
CONTROLLED FUEL SYSTEM
<Common Rail System>

SPECIFICATIONS ......................................................................... 13EA-2

STRUCTURE AND OPERATION

1. Overview ................................................................................. 13EA-3
2. Electronic Control System ................................................... 13EA-12
3. Electronic Control Unit Connection Diagram .......................... 13EA-17

TROUBLESHOOTING
1. Diagnosis Procedure .................................................................. 13EA-19
2. Diagnostic Precautions .............................................................. 13EA-19
3. Inspections Based on Diagnosis Codes .................................. 13EA-20
4. Multi-Use Tester Service Data .............................................. 13EA-45
5. Actuator Tests Performed Using Multi-Use Tester .................. 13EA-47
6. Work When Replacing the Engine Electronic Control Unit .... 13EA-48
7. Inspections Performed at Electronic
Control Unit Connectors ....................................................... 13EA-52

INSPECTION OF ELECTRICAL EQUIPMENT .......................... 13EA-55

INSTALLED LOCATIONS OF PARTS ....................................... 13EA-61

ELECTRIC CIRCUIT DIAGRAM ................................................ 13EA-66

13EA-1
SPECIFICATIONS
Item Specifications
Manufacturer Bosch
Model CP3.3 NH
Control method Electronic
Type Radial, 3-cylinder
Supply pump Type External gear type
Rail pressure Model MPROP
control valve Rated voltage V 24
Max. common rail pressure
180 {1840}
MPa {kgf/cm2}
Manufacturer Bosch
3 {ml}
Common rail volume cm 18.7 {18.7}
Common rail Pressure limiting valve opening pressure
210 to 220 {2141 to 2243}
MPa {kgf/cm2}
Common rail pressure sensor supply
5
voltage V
Manufacturer Bosch
Control method Electrical
Injectors Max. operating pressure
180 {1840}
MPa {kgf/cm2}
Min. operating pressure
25 {255}
MPa {kgf/cm2}
Common rail Manufacturer Bosch
electronic control
unit Rated voltage V 24

13EA-2
STRUCTURE AND OPERATION 13EA
1. Overview
• In the common rail system, an electronic control unit monitors various aspects of the engine (engine speed, throt-
tle opening, coolant temperature, etc.) using information from sensors. In accordance with these data, the elec-
tronic control unit effects control over the fuel injection quantity, fuel injection timing, and fuel injection pressure in
order to optimize the engine’s operation.
• The electronic control unit has a diagnosis function that enables it to recognize abnormalities in the common rail
system’s major components and alert the driver to them.
• The common rail system consists mainly of an electronically controlled supply pump; injectors; a common rail;
and the electronic control unit and sensors that are used to control the other components.

13EA-3
STRUCTURE AND OPERATION
• When the engine is cranked by means of the starter switch, the feed pump (this is located inside the supply pump)
simultaneously draws fuel from the fuel tank and feeds it via the fuel filter to the MPROP (rail pressure control
valve). A quantity of fuel metered by the MPROP is supplied via the inlet valves to the plunger chambers.
• The fuel in the plunger chambers is pressurized. The outlet valves are then opened, and the fuel is fed under
pressure to the common rail.
• The pressurized fuel is held in the common rail and then uniformly fed to the injectors.
• In response to signals from the engine electronic control unit, a magnetic valve in each injector causes the injector
to inject fuel into the relevant combustion chamber at the optimal timing and in the optimal quantity.

13EA-4
 13EA
1.1 Supply pump

13EA-5
STRUCTURE AND OPERATION

CAUTION
• Be sure to connect the MPROP (rail pressure control valve) connector to the engine harness before start-
ing the engine. If the engine were started with the MPROP connector not connected, control of the supply
pump by the engine electronic control unit would not be possible and a fault would ensue.

• The supply pump pressurizes fuel and supplies it in a highly pressurized state.
• Fuel drawn from the fuel tank by the feed pump is not supplied directly to the plungers. It is supplied first to the
MPROP (rail pressure control valve), which controls the amount of fuel reaching the plungers.
• If the fuel pressure exceeds a certain level, the overflow valve returns fuel to the inlet side of the feed pump. This
operation keeps the fuel pressure constant.
• Rotation of the eccentric drive shaft causes (via the tappets) up-down movement of the plungers. Fuel in the
plunger chambers is thus highly pressurized.
13EA-6
 13EA
(1) MPROP (rail pressure control valve)
• The MPROP receives fuel from the feed pump and feeds fuel to-
ward the plungers of the supply pump in such a quantity that the
fuel pressure corresponds to that required by the engine elec-
tronic control unit.
• When the MPROP is not operating, i.e., when current is not flow-
ing, fuel flows at its maximum rate. When current flows, the pis-
ton in the MPROP is pressed down such that fuel is not fed
toward the plungers.

(2) Zero delivery throttle

• A small amount of fuel can flow through the MPROP (rail pres-
sure control valve) to the plunger even when the MPROP reduc-
es fuel flow to the fullest extent. To stop the fuel feed to the
plunger, the zero delivery throttle is opened to return fuel to the
feed pump, causing the fuel flow for the plunger to reach zero.

(3) Overflow valve

• The overflow valve opens when the pressure of the fuel sent
from the feed pump exceeds the predetermined level to return
the excess fuel to the inlet side of the feed pump. The fuel which
has overflowed enters into the eccentric drive shaft chamber to
lubricate the parts in the chamber.

(4) Flow control valve

• The flow control valve diverts the excess of fuel sent from the
feed pump into the eccentric drive shaft chamber for the part lu-
brication.

13EA-7
STRUCTURE AND OPERATION
1.2 Common rail

• The common rail distributes to the injectors high-pressure fuel that has been fed from the supply pump.
• Each flow limiter prevents an abnormal outflow of fuel. It does so by blocking the fuel passage in the event of fuel
leakage from the injection pipe or excessive injection of fuel from the injector.
• The common rail pressure sensor is used in feedback control. It senses the fuel pressure inside the common rail
and feeds a corresponding signal to the electronic control unit.
• If the fuel pressure in the common rail exceeds a certain, set level, the valve piston in the pressure limiting valve
pushes and compresses the spring such that fuel is able to escape. The pressure limiting valve thus prevents the
fuel pressure from becoming higher than the set pressure.

Flow limiter
• During normal operation, the piston moves (thus pushing and compressing the spring) to the extent necessary for
one injection quantity to pass through. The piston does not make contact with the seat at this time. When injection
is complete, the piston is returned to its initial position by the spring.
• If the amount of fuel passing through the flow limiter becomes excessively great, the piston presses against the
seat, thereby closing the fuel passage and preventing an abnormal outflow of fuel.
When the piston has pressed against the seat, it does not return to its original position until the engine has been
stopped and the pressure in the common rail has come down.

13EA-8
 13EA
1.3 Injector

• In accordance with electrical signals from the engine electronic control unit, each injector supplies high-pressure
fuel from the common rail to the relevant combustion chamber of the engine at the optimal timing and in the opti-
mal quantity.
• The valve body and valve piston together form the control chamber.
• The functional units of each injector can be broadly defined as follows:
(1) Control section
• The control section consists of the control chamber, magnet, valve spring, armature plate, valve ball, valve body,
valve piston, orifice A, and orifice Z. The valve piston is located between the control section and the injection sec-
tion.
(2) Injection section
• The injection section consists of the nozzle body, nozzle needle, nozzle spring, and nozzle nut.
13EA-9
STRUCTURE AND OPERATION
(3) Operation
(3.1) Injection not taking place
• With the magnet not energized, the ar-
mature plate is pushed up by the valve
spring such that the ball seat is closed.
• The high-pressure fuel acts upon the
control chamber via orifice Z. The
same pressure acts upon the nozzle
needle.
• The fuel pressure acting on the nozzle
needle cannot overcome the valve pis-
ton and nozzle spring, so the nozzle
needle stays in its downward-pushed
position and injection does not take
place.

(3.2) Start of injection

• When the magnet is energized, the re-
sulting electromagnetic force draws
the armature plate upward, causing
the ball seat to open.
• Fuel in the control chamber passes
through the ball seat and orifice A and
flows to the fuel tank.
• With the pressure in the control cham-
ber reduced, the fuel acting on the
nozzle needle overcomes the valve
piston and nozzle spring, pushing up
the nozzle needle such that injection
starts.
• If the magnet remains energized, the
injection rate reaches its maximum
level.

13EA-10
 13EA
(3.3) End of injection
• When energization of the magnet is
stopped, the armature plate is pushed
downward by the valve spring such
that the ball seat closes. At this time,
fuel flows into the control chamber via
orifice Z, pushing down the valve pis-
ton and nozzle needle such that injec-
tion finishes.

13EA-11
STRUCTURE AND OPERATION
2. Electronic Control System
2.1 System block diagram

Input signals Engine ECU Output signals

Engine speed sensor Injectors

Fuel injection pressure MPROP (rail pressure
Cylinder recognition sensor control control valve)
Water temperature sensor
Engine

Boost pressure sensor Warm-up acceleration Fuel injection rate

function control
Common rail pressure sensor
Fuel temperature sensor Fuel injection quantity
Auxiliary brake
Intake air temperature sensor function control
Boost air temperature sensor
VGT control function Fuel injection timing
Immobilizer ECU (See Electrical.) control
(See Gr15.)
Fuel injection pressure
Starter switch Intake throttle control control
Accelerator pedal position sensor function (See Gr17.)
Accelerator pedal switch
(incorporated into accelerator pedal EGR valve control Engine warning lamp
position sensor) function
(See Gr17.) Tachometer
Pulse divider (vehicle speed sensor)
Idling speed adjustment potentiometer
Starter continuous Glow drive relay
Vehicle

Fuel injection rate adjustment resistor energization

DPF differential pressure sensor prevention function
Diagnosis switch (See Electrical.)
Air conditioner switch Glow plugs
Pre-heat control
Clutch switch function
Transmission neutral switch (See Electrical.) Exhaust brake 3-way
magnetic valve
Exhaust brake switch
Fault diagnosis
Air flow sensor function Safety relay
Torque limit switch • Diagnosis of
various functions EDU relay
• DPF clogged warn-
ing (See Gr17.)

VGT actuator
Motor
Position sensor

VGT EDU (See Gr15.)

ABS ECU (See Gr35EA.)

EGR EDU (See Gr17.)

EGR valve
Multi-Use Tester Motor
Position sensor

MVCU (See Gr13EB.)

Throttle EDU (See Gr17.)

CAN: Controller area network Intake throttle

ECU: Electronic control unit Motor
EGR:Exhaust gas recirculation CAN CAN Position sensor
communication communication
EDU: Electronic drive unit
ABS: Anti-lock brake system
MVCU: Multifunction vehicle control unit
DPF: Diesel Particulate Filter
VGT: Variable geometry turbo

13EA-12
 13EA
Part Main function/operation
Engine speed sensor Sensing of engine speed
Cylinder recognition sensor Cylinder recognition
Water temperature sensor Sensing of coolant temperature
Boost pressure sensor Sensing of boost pressure
Common rail pressure sensor Sensing of common rail pressure
Fuel temperature sensor Sensing of fuel temperature
Intake air temperature sensor Sensing of intake air temperature
Boost air temperature sensor Sensing of boost air temperature
Immobilizer ECU Supply of engine start authorization signal
Senses that the engine is in starting condition with the starter switch in
Starter switch
START position.
Accelerator pedal position sensor Sensing of extent of accelerator pedal depression
Accelerator pedal switch (incorporated into accelera- Sensing of released/pressed condition of accelerator pedal (ON with
tor pedal position sensor) pedal released)
Pulse divider (vehicle speed sensor) Sensing of vehicle speed
Idling speed adjustment potentiometer Acceleration of warm-up
Fuel injection rate adjustment resistor Correction of fuel injection rate
Detection of pressure differential between DPF inlet pressure and at-
DPF differential pressure sensor
mospheric pressure
Diagnosis switch Output of diagnosis codes
Multi-Use Tester connector Communication between Multi-Use Tester and common rail system
Air conditioner switch ON when air conditioner is operating
Sensing of released/pressed condition of clutch pedal
Clutch switch
(OFF with pedal released)
Detection of transmission neutral condition
Transmission neutral switch
(OFF with transmission in neutral)
Exhaust brake switch Exhaust brake ON/OFF control
Air flow sensor Sensing of intake air flow rate
Torque limit switch Detection of 1st and reverse positions
Control of fuel injection rate, fuel injection quantity, and fuel injection
Injectors
timing
MPROP (rail pressure control valve) Control of fuel injection pressure
Engine warning lamp Indication of system abnormalities
Tachometer Indication of engine speed (in meter cluster)
Glow drive relay ON/OFF control of glow plugs
Exhaust brake 3-way magnetic valve ON/OFF control of exhaust brake valve
Safety relay Control of starter continuous energization prevention function
Switching ON/OFF supply of power to exhaust gas recirculation elec-
EDU relay
tronic drive unit, throttle and VGT electronic drive unit
Engine data recognized by the engine electronic control unit are output-
ted to the CAN bus to enable systems to obtain data that they need for
CAN communication (EGR EDU, throttle EDU, VGT
control. Each electronic drive unit issues signals to the engine electron-
EDU)
ic control unit via the CAN bus to enable it to effect engine control ap-
propriate for each type of system control.
Engine data recognized by the engine electronic control unit are output-
ted to the CAN bus to enable systems to obtain data that they need for
control.
CAN communication (ABS ECU, MVCU)
Each system’s electronic control unit issues signals to the engine elec-
tronic control unit to enable it to effect engine control appropriate to con-
trol of the system.
Allowing the service personnel to read or erase diagnosis codes and
CAN communication (Multi-Use Tester)
obtain the electronic control unit and vehicle data using a scan tool.

13EA-13
STRUCTURE AND OPERATION
2.2 Fuel injection rate control
(1) Pilot injection
• Pilot injection entails the injection of an extremely small amount
of fuel ahead of the main injection.
• Pilot injection suppresses heat generation early in the injection
cycle and thus suppresses NOx generation and noise at the
start of combustion.

(2) Split injection control

• Split injection entails the injection of an extremely small amount
of fuel two or more times ahead of the main injection.
• Split injection increases the fuel’s combustibility and thus en-
hances the engine’s cold startability.

2.3 Fuel injection quantity control

(1) Fuel injection quantity during engine startup
• During engine startup, the fuel injection quantity is determined in
accordance with the engine speed and coolant temperature.

(2) Basic fuel injection quantity

• The basic fuel injection quantity is determined in accordance
with the engine speed and throttle opening.

(3) Maximum injection quantity

• The maximum injection quantity is calculated from the engine
speed and boost pressure.

13EA-14
 13EA
(4) Fuel injection rate adjustment resistor correction amount
• To limit inconsistency in the injection quantity, the injection quan-
tity is corrected by the fuel injection rate adjustment resistor.

2.4 Fuel injection timing control

(1) Main injection timing
• The main injection timing is calculated from the fuel injection
quantity and engine speed.

(2) Pilot injection timing (pilot interval)

• The pilot interval is calculated from the fuel injection quantity and
engine speed.

2.5 Fuel injection pressure control

• The fuel injection pressure is calculated from the fuel injection
quantity and engine speed.

13EA-15
STRUCTURE AND OPERATION
2.6 Warm-up acceleration
Engine electronic function
control unit
• The warm-up acceleration function in-
Input signals creases engine warm-up by varying
Comparison
Water temperature sensor operations Output signals the engine’s idling speed in accor-
Accelerator pedal position dance with the engine’s coolant tem-
sensor Idling speed
control perature. It can operate either
Idling speed adjustment
potentiometer Target injection automatically or manually. Selection is
quantity
made using the idling speed adjust-
ment potentiometer.

2.7 Auxiliary brake function

Engine electronic • The auxiliary brake function activates
control unit
Input signals or deactivates the exhaust brake 3-
way magnet valve according to the ve-
Accelerator pedal position Output signals
sensor hicle condition to control the exhaust
Clutch switch Auxiliary brake Exhaust brake brake.
function 3-way magnet
Transmission neutral valve
switch
Exhaust brake switch

2.8 Fault diagnosis function

• The sensors and other components are continuously monitored for faults. In the event that a component is found
faulty, an indication is made in the meter cluster to alert the driver, the fault location is memorized in the form of a
diagnosis code, and the control during fault is initiated.
• While the control during fault is taking place, the system’s functionality is limited to ensure vehicle and driver safe-
ty. It is possible to read the memorized diagnosis code using a Multi-Use Tester or from flashing of the warning
lamp.
• The control during fault recovers by servicing the faults. However, for some diagnosis codes, the warning lamp
stays illuminated until the normal signals are input for several times.
• Diagnosis codes shown by the Multi-Use Tester and those indicated by flashing of the warning lamp are different.
• The Multi-Use Tester is capable of showing more detailed diagnosis codes.

13EA-16
STRUCTURE AND OPERATION
3. Electronic Control Unit Connection Diagram

13EA-17
 13EA

13EA-18
TROUBLESHOOTING 13EA
1. Diagnosis Procedure
• The system can be efficiently inspected for faults using a Multi-User Tester.
System isnpection can be accomplished basically in two ways according to trouble symptom and diagnosis code as
shown below.
• Check against each diagnosis code stored in memory by the electronic control unit.
• Response to transient fault.

Warning lamp lit

X
Vehicle in service shop

X
Read diagnosis code. (See GR00.)

Fault code output Normal code output Normal code No communication with
after cleared output Multi-Use Tester

X
X

X
Check against each diagnosis Response to transient fault (SeeGR00.)

X
If communication cannot be established with all systems, the
diagnosis circuit can most probably be the cause. If this system alone
is impossible to communication to communicate, the system’s
Non- diagnosis output or power circuit(including ground circuit) may be open.
erasable
X

Multi-Use Tester cannot erase some diagnosis codes for regulations.

Clear stored diagnosis code. (See GR00.) X
(See table in section 3.1)
Erasable In that case, confirm the warning lamp turnnig off(=trouble recovery)
by repeating the running test (Engine running and stop four times) 
X

Test drive

X
X

After test driving. Check for diagnosis code and warning lamp lighting. If diagnosis code is issued and warning
lamp is lit. Check fault again.
X

Clear store diagnosis code. (See Gr00)

2.Diagnostic Precautions
• Before measuring voltage, check the battery for charged condition and specific gravity. If system inspection is per-
formed with the battery uncharged or reduced in specific gravity, accurate measurements cannot be achieved.
• To avoid having electrical parts damaged, set the starter switch and lighting switch to LOCK or OFF before dis-
connecting and reconnecting battery cables.
• Before disconnecting connectors, set the starter switch to LOCK or OFF, then allow at least 20 seconds. Voltagemay
remain in electric parts or connected circuit.
• When performing measurement with the tester, handle the test bar carefully so that it does not damage internalcircuit
and other electrical parts of the electronic control unit to result in a short-circuit failure between terminals inconnector
or between connector and car body.
• Resistance is affected by temperature. Determine the necessity of resistance measurement following given tem-
perature specification as a guide. Otherwise, use normal temperature (10 to 35°C) as the measuring condition.

13EA-19
TROUBLESHOOTING
3.Inspections Based on Diagnosis Codes
3.1Diagnosis code list
• Diagnosis codes shown by the Multi-Use Tester and those indicated by flashing of the warning lamp are
different.
• The Multi-Use Tester is capable of showing more detailed diagnosis codes.
• The control during fault recovers by servicing the faults. However, for some diagnosis codes, the warning
lampstays illuminated until the normal signals are input for several times.

Multi-Use Tester indication Warning lamp indication Remarks Non-erasable

Code Message Flashes Orange Red

P0016 Modo
Ne Offset/Backup
SNSR Ne SNSR
Offset/Backup Mode 14 O O
P0045 Actuador
VGT VGT(Open)
Actuator (Aberto) 51 O Gr15
P0046 Actuador
VGT VGT(Performance)
Actuator (Performance) 51 O Gr15
P0047 Actuador
VGT VGT(Low)
Actuator (Baixo) 51 O Gr15
P0069 SNSRPress
Boost Pressão sobrealimentação
SNSR (Correlation) (Correlação) 32 O
CRS (Demasiado baixo) 22, 36 O O
P0087 CRS (Too Low)
36 O
P0088 CRS(Too
CRS (Demaisado
High) alto) 23 O O
P0089 MPROP(Over
MPROP (Sobrecarga)
Load) 63 O
P0090 MPROP(Open
MPROP (Circuito aberto)
Circuit) 63 O
P0091 MPROP(Low)
MPROP (Baixo) 63 O
P0092 MPROP(High)
MPROP (Alto) 63 O
P0093 CRS(Fuel
CRS (Fuga de combustível)
Leak) 22 O O
P0101 SensorSensor
Airflow de fluxo(Plausibility)
de ar (Plausibilidade) 17 O Gr17 O
P0102 SensorSensor
Airflow de fluxo(Low)
de ar (Baixo) 17 O Gr17
P0103 SensorSensor
Airflow de fluxo(High)
de ar (Alto) 17 O Gr17
P0112 SNSR
INT Temperatura
Air Temp. do ar de admissão (Baixo)
SNSR (Low) 44 O
P0113 SNSR
INT Temperatura
Air Temp. do ar de admissão (Alto)
SNSR (High) 44 O
P0116 SNSRTemp
Water Temperatura de água (Plausibilidade)
SNSR (Plausibility) 21 O O
P0117 SNSRTemp
Water Temperatura de água (Baixo)
SNSR (Low) 21 O
P0118 SNSRTemp
Water Temperatura de água (Alto)
SNSR (High) 21 O
P0120 SNSR
TVA TVA
SNSR 28 O Gr17
CRS (Fornecimento de combustível) 22, 23 O O
P0148 CRS (Fuel Delivery)
36 O
P0182 Sensor
Fuel temp.
Temp. combustível
Sensor (admissão) Baixo
(inlet) Low 41
P0183 Sensor
Fuel temp.
Temp. combustível
Sensor (admissão) Alto
(inlet) High 41
P0191 SNSR
CRS Pressão
Pressure CRS(Plausibility)
SNSR (Plausibilidade) 11 O
P0192 SNSR
CRS Pressão
Pressure CRS (Low)
SNSR (Baixo) 11 O
P0193 SNSR
CRS Pressão
Pressure CRS(High)
SNSR (Alto) 11 O
P0201 V/M Injector
Injector - Cilindro1 1(Load)
M/V-Cylinder (Carga) 37 O
P0202 V/M Injector
Injector - Cilindro2 2(Load)
M/V-Cylinder (Carga) 38 O
P0203 V/M Injector
Injector - Cilindro3 3(Load)
M/V-Cylinder (Carga) 39 O
P0204 V/M Injector
Injector - Cilindro4 4(Load)
M/V-Cylinder (Carga) 8 O
P0219 Sobre-rotações
Engine motor
Overrunning 7 O
P0234 Sobrepressão
Over Boost 54 O Gr15
P0236 SNSRPress
Boost pressão compressão
SNSR (Plausi) (Plausibilidade) 54 O
P0237 SNSRPress
Boost pressão compressão
SNSR (Low) (Alta) 32 O
P0238 SNSRPress
Boost pressão compressão
SNSR (High) (Baixo) 32 O
P0261 Injector#1-A
Injector n.º 1-A (Baixo)
(Low) 37 O
P0262 Injector#1-A
Injector n.º 1-A (Alto)
(High) 37 O
P0264 Injector#2-A
Injector n.º 2-A (Baixo)
(Low) 38 O
P0265 Injector#2-A
Injector n.º 2-A (Alto)
(High) 38 O

13EA-20
 13EA

Multi-Use Tester indication Warning lamp indication Remarks Non-erasable

Code Message Flashes Orange Red

P0267 Injector
Injector n.º (Low)
#3-A 3-A (Baixo) 39 O
P0268 Injector
Injector n.º(High)
#3-A 3-A (Alto) 39 O
P0270 Injector#4-A
Injector n.º 4-A (Baixo)
(Low) 8 O
P0271 Injector#4-A
Injector n.º 4-A (Alto)
(High) 8 O
P0335 SNSRRevolution
Engine Rotações do motor
SNSR 15 O
P0339 SNSRRevolution
Engine Rotações do motor
SNSR (Plausibilidade)
(Plausi) 15 O O
P0340 SNSR Posição
Camshaft árvore
Position SNSR de cames 12 O
P0344 SNSR Posição
Camshaft árvore
Position SNSR de(Plausi)
cames (Plausibilidade) 12 O
P0380 Relé para
Relay relé de
for Glow incandescência
Relay 26 Electrical
P0381 Luz de
Glow incandescência
Lamp 89 Electrical
P0401 Fluxo
EGR EGR(Insufficient)
Flow (Insuficiente) 2 O Gr17 O
P0402 Fluxo
EGR EGR
Flow (Excessivo)
(Excessive) 2 O Gr17 O
P0403 EGR1(Actuator
EGR1 (Circuito actuador)
Circuit) 67 O Gr17
P0409 EGR1(Position
EGR1 (SensorSensor)
posição) 67 O Gr17
P040C Sensor
EGR Gastemp.
Tempgases EGR
Sensor (Baixo)
(Low) 9 O Gr17
P040D Sensor
EGR Gastemp.
Tempgases EGR
Sensor (Alto)
(High) 9 O Gr17
P0475 Pot. Travão
Exhaust BrakedePWR
escape (Aberto)
(Open) 93 O
P0476 Pot. Travão
Exhaust dePWR
Brake escape (Performance)
(Performance) 93 O
P0477 Pot. Travão
Exhaust dePWR
Brake escape (Baixo)
(Low) 93 O
P0478 Pot. Travão de escape (Alto)
Exhaust Brake PWR (High) 93 O
P0500 SensorSpeed
Vehicle de velocidade
Sensor de veículo 25 O
P0508 Volume ralenti & Ac.
Idle Volume & Idle AccRalenti
(Low)(Baixo) 31
P0509 Volume
Idle ralenti
Volume & Ac.
& Idle AccRalenti
(High) (Alto) 31
P0513 Chave imobilizador incorrecta
Incorrect Immobilizer Key 13 O
P0562 Tensão
Power de alimentação
Supply (Baixo)
Voltage (Low) 33 O
P0563 Tensão de alimentação (Alto)
Power Supply Voltage (High) 33 O
Comunicação CAN 64 O
P0600 CAN Communication
73 O
P0607 Sistema
ECU UCE
System 33 O O
Conversor A/D 33 O O
P060B A/D Converter
63 O
P0615 RelédeSafety
Starter segurança domotor
Relay dearranque
(Over Load) (Sobrecarga) 48 O Electrical
P0616 Relé deSafety
Starter segurança
Relaydo(Low)
motor de arranque (Baixo) 48 O Electrical
P0617 Relé de
Starter segurança
Safety Relay do motor de arranque (Alto)
(High) 48 O Electrical
P061B Performance
ECU UCE(Calc)
Performance (Calc) 33 O
P061C Performance
ECU UCE(Ne)
Performance (Ne) 33 O
P062D Banco Bank
Injector injector
1 1 82 O
P062E Banco Bank
Injector injector
2 2 82 O
P062F Sistema UCE (EEPROM)
ECU System (EEPROM) 33 O
P0642 TensãoSupply
Sensor de alimentação
Voltage 1do sensor 1 (Baixo)
(Low) 81 O
P0643 Tensão de alimentação do sensor 1 (Alto)
Sensor Supply Voltage 1 (High) 81 O
P0650 MIL
MIL 3
P0652 TensãoSupply
Sensor de alimentação
Voltage 2do sensor 2 (Baixo)
(Low) 81 O
P0653 TensãoSupply
Sensor de alimentação
Voltage 2do sensor 2 (Alto)
(High) 81 O
P0657 V/M Tensão (Baixo)
M/V Voltage (Low) 79 O
P0685 ReléRelay
EDU EDU (Open)
(Aberto) 84 O Gr15, 17
P0686 Relé EDU (Baixo)
EDU Relay (Low) 84 O Gr15, 17
P0687 ReléRelay
EDU EDU (High)
(Alto) 84 O Gr15, 17

13EA-21
TROUBLESHOOTING

Multi-Use Tester indication Warning lamp indication Remarks Non-erasable

Code Message Flashes Orange Red

P0698 Sensor Supply Voltage 3 (Low) 81 O

P0699 Sensor Supply Voltage 3 (High) 81 O
P1171 Q Adjustment Register (Low) 34 O
P1172 Q Adjustment Register (High) 34 O
P1C01 Inter Cooler Performance 27 O Gr17
P1C11 Injector #1-A (Plausibility) 37 O
P1C12 Injector #2-A (Plausibility) 38 O
P1C13 Injector #3-A (Plausibility) 39 O
P1C14 Injector #4-A (Plausibility) 8 O
P2002 DPF MFF 55 O Gr17
P2100 TVA (Open) 28 O Gr17
P2101 TVA (System) 28 O Gr17
P2102 TVA (Short) 28 O Gr17
P2120 Acc Switch 65
P2122 Acc Sensor 1 (Low) 24 O
P2123 Acc Sensor 1 (High) 24 O
P2127 Acc Sensor 2 (Low) 16 O
P2128 Acc Sensor 2 (High) 16 O
P2135 TVA SNSR (Voltage) 28 O Gr17
P2138 Acc Sensor Correlation 24, 58 O
P2146 Injector Bank 1 (Plausibility) 82
P2147 Injector Bank 1 (Low) 82 O
P2148 Injector Bank 1 (High) 82 O
P2149 Injector Bank 2 (Plausibility) 82
P2150 Injector Bank 2 (Low) 82 O
P2151 Injector Bank 2 (High) 82 O
P2199 EGR Temp Sensor (Correlation) 9 O Gr17
P2227 Atm Press SNSR (Plausibility) 19 O O
P2228 Atm Press SNSR (Low) 19 O O
P2229 Atm Press SNSR (High) 19 O O
P2263 VGT System 51, 54 O Gr15 O
P2279 Intake Pipe Leak 27 O Gr15 O
P2413 EGR System 67 O Gr17
P242F DPF MFF (Accumulation) 55 O Gr17
P2453 DPF Diff SNSR (Plausi) & MFF 97 O Gr17
P2454 DPF Diff SNSR (Low) & MFF 97 O Gr17
P2455 DPF Diff SNSR (High) & MFF 97 O Gr17
P2457 EGR Cooler Performance 2 O Gr17
P2562 VGT Position Sensor 51 O Gr15
P2670 MPROP Voltage (Low) 36 O

13EA-22
TROUBLESHOOTING
3.2 Diagnosis code generation conditions and inspection items
P0016: Ne SNSR Offset/Backup Mode (warning lamp flashes: 14)
There is too large difference between engine speed sensor signal and cylinder
Generation condition
recognition sensor signal.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Engine is stopped.
Service data 01: Engine Revolution
Electronic control unit connector 06 : Engine speed sensor, 07 : Cylinder recognition sensor
Inspection
Electrical equipment #263: Engine speed sensor, #320: Cylinder recognition sensor
Electric circuit diagram Engine speed sensor and cylinder recognition sensor system

P0069: Boost Press SNSR (Correlation) (warning lamp flashes: 32)

Engine electronic control unit has judged boost pressure sensor abnormal as a
Generation condition
result of comparison with conditions of other sensors.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 21: Boost Pressure
Inspection Electrical equipment #318: Boost pressure sensor
Electric circuit diagram Boost pressure sensor system

P0087: CRS (Too Low) (warning lamp flashes: 22, 36)

Generation condition Common rail pressure too low
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

P0088: CRS (Too High) (warning lamp flashes: 23)

Generation condition Common rail pressure too high
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

13EA-23
 13EA
P0089: MPROP (Over Load) (warning lamp flashes: 63)
Generation condition MPROP (rail pressure control valve) circuit is overloaded.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

P0090: MPROP (Open Circuit) (warning lamp flashes: 63)

Generation condition MPROP (rail pressure control valve) circuit open-circuited.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

P0091: MPROP (Low) (warning lamp flashes: 63)

Generation condition MPROP (rail pressure control valve) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

P0092: MPROP (High) (warning lamp flashes: 63)

Generation condition MPROP (rail pressure control valve) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

13EA-24
TROUBLESHOOTING
P0093: CRS (Fuel Leak) (warning lamp flashes: 22)
Generation condition Fuel system is leaking (significant leakage).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Engine stops.
Service data 0A: Reference Injection Quantity
Inspection Actuator test B2: Fuel Leak Check
Other Fuel system piping (See Gr13A.)

P0112: INT Air Temp. SNSR (Low) (warning lamp flashes: 44)
Generation condition Intake air temperature sensor voltage is at or below the specified value (0.15 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Backup value (25°C) is used.
• Injection quantity is limited.
Control effected by electronic control unit
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 30: Intake Air Temp. (upper stream)
Electronic control unit connector 14 : Intake air temperature sensor
Inspection
Electrical equipment #305: Intake air temperature sensor
Electric circuit diagram Intake air temperature sensor system

P0113: INT Air Temp. SNSR (High) (warning lamp flashes: 44)
Generation condition Intake air temperature sensor voltage is at or above the specified value (4.87 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Backup value (25°C) is used.
• Injection quantity is limited.
Control effected by electronic control unit
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 30: Intake Air Temp. (upper stream)
Electronic control unit connector 14 : Intake air temperature sensor
Inspection
Electrical equipment #305: Intake air temperature sensor
Electric circuit diagram Intake air temperature sensor system

P0116: Water Temp SNSR (Plausibility) (warning lamp flashes: 21)

Engine electronic control unit has judged water temperature sensor abnormal as
Generation condition
a result of comparison with conditions of other sensors.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Backup value (80°C) is used.
• Injection quantity is limited.
Control effected by electronic control unit
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 32: Water Temperature
Electronic control unit connector 02 : Water temperature sensor
Inspection
Electrical equipment #262: Water temperature sensor
Electric circuit diagram Water temperature sensor system

13EA-25
 13EA
P0117: Water Temp SNSR (Low) (warning lamp flashes: 21)
Generation condition Water temperature sensor voltage is at or below the specified value (0.2 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Backup value (80°C) is used.
• Injection quantity is limited.
Control effected by electronic control unit
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 32: Water Temperature
Electronic control unit connector 02 : Water temperature sensor
Inspection
Electrical equipment #262: Water temperature sensor
Electric circuit diagram Water temperature sensor system

P0118: Water Temp SNSR (High) (warning lamp flashes: 21)

Generation condition Water temperature sensor voltage is at or above the specified value (4.8 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Backup value (80°C) is used.
• Injection quantity is limited.
Control effected by electronic control unit
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 32: Water Temperature
Electronic control unit connector 02 : Water temperature sensor
Inspection
Electrical equipment #262: Water temperature sensor
Electric circuit diagram Water temperature sensor system

P0148: CRS (Fuel Delivery) (warning lamp flashes: 22, 23)

Generation condition Leakage (large amount of leakage) was found in the fuel system.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Engine stops.
Service data 0A: Reference Injection Quantity
Inspection Actuator test B2: Fuel Leak Check
Other Check the fuel pipe (See Gr13A.)

P0182: Fuel Temp. Sensor (inlet) (Low) (warning lamp flashes: 41)
Generation condition Fuel temperature sensor voltage is at or below the specified value (0.15 V).
Recoverability System recovers if signal becomes normal with starter switch in ON position.
Control effected by electronic control unit Engine is controlled using backup value (40°C).
Service data 33: Fuel Temperature (inlet)
Electronic control unit connector 04 : Fuel temperature sensor
Inspection
Electrical equipment #323: Fuel temperature sensor
Electric circuit diagram Fuel temperature sensor system

13EA-26
TROUBLESHOOTING
P0183: Fuel Temp. Sensor (inlet) (High) (warning lamp flashes: 41)
Generation condition Fuel temperature sensor voltage is at or above the specified value (4.8 V).
Recoverability System recovers if signal becomes normal with starter switch in ON position.
Control effected by electronic control unit Engine is controlled using backup value (40°C).
Service data 33: Fuel Temperature (inlet)
Electronic control unit connector 04 : Fuel temperature sensor
Inspection
Electrical equipment #323: Fuel temperature sensor
Electric circuit diagram Fuel temperature sensor system

P0191: CRS Pressure SNSR (Plausibility) (warning lamp flashes: 11)

Engine electronic control unit has judged that common rail pressure sensor was
Generation condition
faulty.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 0A: Reference Injection Quantity
Inspection Electrical equipment #319: Common rail pressure sensor
Electric circuit diagram Common rail pressure sensor system

P0192: CRS Pressure SNSR (Low) (warning lamp flashes: 11)

Generation condition Common rail pressure sensor voltage is at or below the specified value (0.2 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 0A: Reference Injection Quantity
Inspection Electrical equipment #319: Common rail pressure sensor
Electric circuit diagram Common rail pressure sensor system

P0193: CRS Pressure SNSR (High) (warning lamp flashes: 11)

Generation condition Common rail pressure sensor voltage is at or above the specified value (4.8 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 0A: Reference Injection Quantity
Inspection Electrical equipment #319: Common rail pressure sensor
Electric circuit diagram Common rail pressure sensor system

13EA-27
 13EA
P0201: Injector M/V-Cylinder 1 (Load) (warning lamp flashes: 37)
Generation condition Injector magnetic valve (No. 1 cylinder) circuit shorted or open-circuited.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BB: Injector Test 1
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 1 cylinder) system

P0202: Injector M/V-Cylinder 2 (Load) (warning lamp flashes: 38)

Generation condition Injector magnetic valve (No. 2 cylinder) circuit shorted or open-circuited.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 2 cylinder) system

P0203: Injector M/V-Cylinder 3 (Load) (warning lamp flashes: 39)

Generation condition Injector magnetic valve (No. 3 cylinder) circuit shorted or open-circuited.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 3 cylinder) system

P0204: Injector M/V-Cylinder 4 (Load) (warning lamp flashes: 8)

Generation condition Injector magnetic valve (No. 4 cylinder) circuit shorted or open-circuited.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BC: Injector Test 2
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 4 cylinder) system

13EA-28
TROUBLESHOOTING
P0219: Engine Overrunning (warning lamp flashes: 7)
Generation condition Engine speed is higher than specification (4,300 rpm).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
Control effected by electronic control unit • Throttle control is stopped.
• VG turbo control is stopped.
• Fuel injection is stopped.
Inspection Electronic equipment Engine electronic control unit

P0236: Boost Press SNSR (Plausi) (warning lamp flashes: 54)

Generation condition Engine electronic control unit has judged that boost pressure sensor was faulty.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 21: Boost Pressure
Inspection Electrical equipment #318: Boost pressure sensor
Electric circuit diagram Boost pressure sensor system

P0237: Boost Press SNSR (Low) (warning lamp flashes: 32)

Generation condition Boost pressure sensor voltage is at or below the specified value (0.3 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 21: Boost Pressure
Inspection Electrical equipment #318: Boost pressure sensor
Electric circuit diagram Boost pressure sensor system

P0238: Boost Press SNSR (High) (warning lamp flashes: 32)

Generation condition Boost pressure sensor voltage is at or above the specified value (4.8 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 21: Boost Pressure
Inspection Electrical equipment #318: Boost pressure sensor
Electric circuit diagram Boost pressure sensor system

13EA-29
 13EA
P0261: Injector #1-A (Low) (warning lamp flashes: 37)
Generation condition Injector magnetic valve (No. 1 cylinder) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 1 and No. 3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BB: Injector Test 1
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 1 cylinder) system

P0262: Injector #1-A (High) (warning lamp flashes: 37)

Generation condition Injector magnetic valve (No. 1 cylinder) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No.1 and No.3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BB: Injector Test 1
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 1 cylinder) system

P0264: Injector #2-A (Low) (warning lamp flashes: 38)

Generation condition Injector magnetic valve (No. 2 cylinder) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 2 cylinder) system

13EA-30
TROUBLESHOOTING
P0265: Injector #2-A (High) (warning lamp flashes: 38)
Generation condition Injector magnetic valve (No. 2 cylinder) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 2 cylinder) system

P0267: Injector #3-A (Low) (warning lamp flashes: 39)

Generation condition Injector magnetic valve (No. 3 cylinder) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 1 and No. 3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 3 cylinder) system

P0268: Injector #3-A (High) (warning lamp flashes: 39)

Generation condition Injector magnetic valve (No. 3 cylinder) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 1 and No. 3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 3 cylinder) system

13EA-31
 13EA
P0270: Injector #4-A (Low) (warning lamp flashes: 8)
Generation condition Injector magnetic valve (No. 4 cylinder) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BC: Injector Test 2
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 4 cylinder) system

P0271: Injector #4-A (High) (warning lamp flashes: 8)

Generation condition Injector magnetic valve (No. 4 cylinder) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BC: Injector Test 2
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 4 cylinder) system

P0335: Engine Revolution SNSR (warning lamp flashes: 15)

Generation condition No engine speed sensor signals are received.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Control is carried out using cylinder recognition sensors.
Control effected by electronic control unit
• Injection quantity is limited.
Service data 01: Engine Revolution
Electronic control unit connector 06 : Engine speed sensor
Inspection
Electrical equipment #263: Engine speed sensor
Electric circuit diagram Engine speed sensor system

P0339: Engine Revolution SNSR (Plausi) (warning lamp flashes: 15)

Generation condition Engine speed sensor signal indicates too high speeds (6,000 rpm or higher).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Control is carried out using cylinder recognition sensors.
Control effected by electronic control unit
• Injection quantity is limited.
Service data 01: Engine Revolution
Electronic control unit connector 06 : Engine speed sensor
Inspection
Electrical equipment #263: Engine speed sensor
Electric circuit diagram Engine speed sensor system

13EA-32
TROUBLESHOOTING
P0340: Camshaft Position SNSR (warning lamp flashes: 12)
Generation condition No cylinder recognition sensor signals are received.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Control is carried out using engine speed sensors.
Control effected by electronic control unit
• Injection quantity is limited.
Service data 01: Engine Revolution
Electronic control unit connector 07 : Cylinder recognition sensor
Inspection
Electrical equipment #320: Cylinder recognition sensor
Electric circuit diagram Cylinder recognition sensor system

P0344: Camshaft Position SNSR (Plausi) (warning lamp flashes: 12)

Cylinder recognition sensor signals are irregular (due to too large inconsistency
Generation condition
in angular recognition between camshaft and crankshaft).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Control is carried out using engine speed sensors.
Control effected by electronic control unit
• Injection quantity is limited.
Service data 01: Engine Revolution
Electronic control unit connector 07 : Cylinder recognition sensor
Inspection
Electrical equipment #320: Cylinder recognition sensor
Electric circuit diagram Cylinder recognition sensor system

P0475: Exhaust Brake PWR (Open) (warning lamp flashes: 93)

Generation condition Exhaust brake 3-way magnetic valve circuit is open.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Control of auxiliary brake function is deactivated.
• White smoke reduction control is deactivated if idling condition is held for an
Control effected by electronic control unit
extended period of time.
• Auxiliary brake activation command from MVCU is cancelled.
Service data C2: Auxiliary Brake M/V 1
Actuator test AA: Auxiliary Brake M/V 1
Inspection Electronic control unit connector 13 : Exhaust brake 3-way magnetic valve
Electrical equipment #565: Exhaust brake 3-way magnetic valve
Electric circuit diagram Exhaust brake 3-way magnetic valve system

P0476: Exhaust Brake PWR (Performance) (warning lamp flashes: 93)

Generation condition Exhaust brake 3-way magnetic valve circuit is overloaded.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Control of auxiliary brake function is deactivated.
• White smoke reduction control is deactivated if idling condition is held for an
Control effected by electronic control unit
extended period of time.
• Auxiliary brake activation command from MVCU is cancelled.
Service data C2: Auxiliary Brake M/V 1
Actuator test AA: Auxiliary Brake M/V 1
Inspection Electronic control unit connector 13 : Exhaust brake 3-way magnetic valve
Electrical equipment #565: Exhaust brake 3-way magnetic valve
Electric circuit diagram Exhaust brake 3-way magnetic valve system

13EA-33
 13EA
P0477: Exhaust Brake PWR (Low) (warning lamp flashes: 93)
Generation condition Exhaust brake 3-way magnetic valve circuit is shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Control of auxiliary brake function is deactivated.
• White smoke reduction control is deactivated if idling condition is held for an
Control effected by electronic control unit
extended period of time.
• Auxiliary brake activation command from MVCU is cancelled.
Service data C2: Auxiliary Brake M/V 1
Actuator test AA: Auxiliary Brake M/V 1
Inspection Electronic control unit connector 13 : Exhaust brake 3-way magnetic valve
Electrical equipment #565: Exhaust brake 3-way magnetic valve
Electric circuit diagram Exhaust brake 3-way magnetic valve system

P0478: Exhaust Brake PWR (High) (warning lamp flashes: 93)

Generation condition Exhaust brake 3-way magnetic valve circuit is shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Control of auxiliary brake function is deactivated.
• White smoke reduction control is deactivated if idling condition is held for an
Control effected by electronic control unit
extended period of time.
• Auxiliary brake activation command from MVCU is cancelled.
Service data C2: Auxiliary Brake M/V 1
Actuator test AA: Auxiliary Brake M/V 1
Inspection Electronic control unit connector 13 : Exhaust brake 3-way magnetic valve
Electrical equipment #565: Exhaust brake 3-way magnetic valve
Electric circuit diagram Exhaust brake 3-way magnetic valve system

P0500: Vehicle Speed Sensor (warning lamp flashes: 25)

Generation condition No vehicle speed sensor signals are received.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Stops control of speed limitation device and then limits engine speed.
Service data 90: Vehicle Speed
Electronic control unit connector 08 : Vehicle speed sensor
Inspection
Electrical equipment #265: Vehicle speed sensor
Electric circuit diagram Vehicle speed sensor system

P0508: Idle Volume & Idle Acc (Low) (warning lamp flashes: 31)
Idling speed adjustment potentiometer voltage is at or below the specified value
Generation condition
(0.7 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Engine idling speed control is fixed to automatic control.
Service data 81: Idle Volume Voltage
Electrical control unit connector 09 : Idling speed adjustment potentiometer
Inspection
Electrical equipment #157: Idling speed adjustment potentiometer
Electrical circuit diagram Idling speed adjustment potentiometer system

13EA-34
TROUBLESHOOTING
P0509: Idle Volume & Idle Acc (High) (warning lamp flashes: 31)
Idling speed adjustment potentiometer voltage is at or above the specified value
Generation condition
(4.6 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Engine idling speed control is fixed to automatic control.
Service data 81: Idle Volume Voltage
Electrical control unit connector 09 : Idling speed adjustment potentiometer
Inspection
Electrical equipment #157: Idling speed adjustment potentiometer
Electrical circuit diagram Idling speed adjustment potentiometer system

P0513: Incorrect Immobilizer Key (warning lamp flashes: 13)

Abnormal communication between engine electronic control unit and immobilizer
Generation condition
electronic control unit or password unmatched
System recovers if any valid signal is input when starter switch is turned from
Recoverability
OFF to ON
Control effected by electronic control unit Prevents engine from starting.
Electric circuit diagram Immobilizer electronic control unit system
Inspection
Other Immobilizer electronic control unit (See Electrical.)

P0562: Power Supply Voltage (Low) (warning lamp flashes: 33)

Generation condition Battery voltage is too low.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control of engine is stopped.
Service data 80: Power Supply Voltage
Inspection
Electrical equipment Battery (See Electrical.)

P0563: Power Supply Voltage (High) (warning lamp flashes: 33)

Generation condition Battery voltage is too high.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control of engine is stopped.
Service data 80: Power Supply Voltage
Inspection
Electrical equipment Battery (See Electrical.)

13EA-35
 13EA
P0600: CAN Communication (warning lamp flashes: 64, 73)
Abnormal CAN bus communications between engine electronic control unit and
malfunction vehicle control unit or between engine electronic control unit and any
Generation condition
of electronic drive units (exhaust gas recirculation, intake throttle and variable ge-
ometry turbocharger units).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
Control effected by electronic control unit
• Throttle control is stopped.
• VG turbo control is stopped.
Service data 91: Speed Limiter Reference Speed
Electronic control unit connector 15 : CAN resistor
• Engine electronic control unit
• Exhaust gas recirculation electronic drive unit (See Gr17.)
Electrical equipment
Inspection • Throttle electronic drive unit (See Gr17.)
• Variable geometry turbo electronic drive unit (See Gr15.)
Abnormal CAN bus communications between engine electronic control unit and
malfunction vehicle control unit or between engine electronic control unit and any
Electric circuit diagram
of electronic drive units (exhaust gas recirculation, intake throttle and variable ge-
ometry turbocharger units).

P0607: ECU system (warning lamp flashes: 33)

• System is overloaded.
Generation condition • Data processing time of engine electronic control unit has exceeded time-out
period.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Engine is stopped.
Inspection Other Engine electronic control unit

P060B: A/D Converter (warning lamp flashes: 33, 63)

Voltage after conversion inside engine electronic control unit is higher than spec-
Generation condition
ification (5 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Engine is stopped.
• Stops control of speed limitation device and then limits engine speed.
• Variable geometry turbocharger target opening value is replaced by a backup
Control effected by electronic control unit
value.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Inspection Other Engine electronic control unit

P061B: ECU Performance (Calc) (warning lamp flashes: 33)

Abnormal condition has occurred in arithmetic processing inside engine electron-
Generation condition
ic control unit.
Recoverability System recovers if any valid signal is input with starter switch in ON position.
Control effected by electronic control unit No particular control takes place.
Inspection Other Engine electronic control unit

13EA-36
TROUBLESHOOTING
P061C: ECU Performance (Ne) (warning lamp flashes: 33)
Abnormal condition has occurred in engine speed processing inside engine elec-
Generation condition
tronic control unit.
Recoverability System recovers if any valid signal is input with starter switch in ON position.
Control effected by electronic control unit No particular control takes place.
Inspection Other Engine electronic control unit

P062D: Injector Bank 1 (warning lamp flashes: 82)

Injector magnetic valve (for No. 1 and No. 3 cylinders) has stopped functioning
Generation condition
temporarily.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Fuel injection amount is limited to a default value.
• Occurrence of abnormal injection control is communicated through CAN.
Control effected by electronic control unit • Injector magnetic valve (for No. 1 and No. 3 cylinders) is deactivated.
• Exhaust gas recirculation control is deactivated.
• Throttle control is deactivated.
Actuator test BB: Injector Test 1, BE: Injector Test 4
Electrical control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (for No. 1 cylinder) or (for cylinder No. 3)

P062E: Injector Bank 2 (warning lamp flashes: 82)

Injector magnetic valve (for No. 2 and No. 4 cylinders) has stopped functioning
Generation condition
temporarily.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Fuel injection amount is limited to a default value.
• Occurrence of abnormal injection control is communicated through CAN.
Control effected by electronic control unit • Injector magnetic valve (for No.2 and No.4 cylinders) is deactivated.
• Exhaust gas recirculation control is deactivated.
• Throttle control is deactivated.
Actuator test BC: Injector Test 2, BD: Injector Test 3
Electrical control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (for No. 2 cylinder) or (for cylinder No. 4)

P062F: ECU System (EEPROM) (warning lamp flashes: 33)

Generation condition Some error has occurred in reading or writing process.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
Control effected by electronic control unit No particular control takes place.
Inspection Other Engine electronic control unit

P0642: Sensor Supply Voltage 1 (Low) (warning lamp flashes: 81)

Engine electronic control unit internal voltage (sensor supply voltage 1) is lower
Generation condition
than specification.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Effects no special control.
Inspection Other Engine electronic control unit

13EA-37
 13EA
P0643: Sensor Supply Voltage 1 (High) (warning lamp flashes: 81)
Engine electronic control unit internal voltage (sensor supply voltage 1) is higher
Generation condition
than specification.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Effects no special control.
Inspection Other Engine electronic control unit

P0650: MIL (warning lamp flashes: 3)

Generation condition Engine warning lamp (orange) circuit shorted, open-circuited, or overloaded
Recoverability System recovers if signal becomes normal with starter switch in ON position.
Control effected by electronic control unit Effects no special control.
Service data E0: MIL
Inspection Actuator test B0: MIL
Electric circuit diagram Meter cluster system

P0652: Sensor Supply Voltage 2 (Low) (warning lamp flashes: 81)

Engine electronic control unit internal voltage (sensor supply voltage 2) is lower
Generation condition
than specification.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Output to sensor is stopped if voltage is lower than 3.5 V.
Control effected by electronic control unit
• Output level is lowered if voltage is higher than 3.5 V.
Inspection Other Engine electronic control unit

P0653: Sensor Supply Voltage 2 (High) (warning lamp flashes: 81)

Engine electronic control unit internal voltage (sensor supply voltage 2) is higher
Generation condition
than specification.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Output to sensor is stopped if voltage is lower than 3.5 V.
Control effected by electronic control unit
• Output level is lowered if voltage is higher than 3.5 V.
Inspection Other Engine electronic control unit

P0657: M/V Voltage (Low) (warning lamp flashes: 79)

Generation condition Exhaust brake 3-way magnetic valve circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control of auxiliary braking function is stopped.
Service data C2: Auxiliary Brake M/V 1
Actuator test AA: Auxiliary Brake M/V 1
Inspection Electronic control unit connector 13 : Exhaust brake 3-way magnetic valve
Electrical equipment #565: Exhaust brake 3-way magnetic valve
Electric circuit diagram Exhaust brake 3-way magnetic valve system

13EA-38
TROUBLESHOOTING
P0698: Sensor Supply Voltage 3 (Low) (warning lamp flashes: 81)
Engine electronic control unit internal voltage (sensor supply voltage 3) is lower
Generation condition
than specification.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Effects no special control.
Inspection Other Engine electronic control unit

P0699: Sensor Supply Voltage 3 (High) (warning lamp flashes: 81)

Engine electronic control unit internal voltage (sensor supply voltage 3) is higher
Generation condition
than specification.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Effects no special control.
Inspection Other Engine electronic control unit

P1171: Q Adjustment Register (Low) (warning lamp flashes: 34)

Generation condition Voltage of fuel injection rate adjustment resistor is too low (below 0.2 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
Control effected by electronic control unit Control is made using a backup value (No. 1).
Service data 82: Q Adjustment Resistor No.
Electronic control unit connector 11 : Fuel injection rate adjustment resistor
Inspection
Electrical equipment #828: Fuel injection rate adjustment resistor
Electric circuit diagram Fuel injection rate adjustment resistor system

P1172: Q Adjustment Register (High) (warning lamp flashes: 34)

Generation condition Voltage of fuel injection rate adjustment resistor is too high (above 4.8 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
Control effected by electronic control unit Control is made using a backup value (No. 1).
Service data 82: Q Adjustment Resistor No.
Electronic control unit connector 11 : Fuel injection rate adjustment resistor
Inspection
Electrical equipment #828: Fuel injection rate adjustment resistor
Electric circuit diagram Fuel injection rate adjustment resistor system

P1C11: Injector #1-A (Plausibility) (warning lamp flashes: 37)

The engine electronic control unit has judged that injector magnetic valve (for No.
Generation condition 1 cylinder) was faulty in comparison with the condition of other injector magnetic
valves.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Fuel injection amount is limited to a default value.
• Occurrence of abnormal injection control is communicated through CAN.
Control effected by electronic control unit • Injector magnetic valve (for No. 1 and No. 3 cylinders) is deactivated.
• Exhaust gas recirculation control is deactivated.
• Throttle control is deactivated.
Actuator test BB: Injector Test 1
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (for No. 1 cylinder)

13EA-39
 13EA
P1C12: Injector #2-A (Plausibility) (warning lamp flashes: 38)
The engine electronic control unit has judged that injector magnetic valve (for No.
Generation condition 2 cylinder) was faulty in comparison with the condition of other injector magnetic
valves.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Fuel injection amount is limited to a default value.
• Occurrence of abnormal injection control is communicated through CAN.
Control effected by electronic control unit • Injector magnetic valve (for No. 2 and No. 4 cylinders) is deactivated.
• Exhaust gas recirculation control is deactivated.
• Throttle control is deactivated.
Actuator test BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (for No. 2 cylinder)

P1C13: Injector #3-A (Plausibility) (warning lamp flashes: 39)

The engine electronic control unit has judged that injector magnetic valve (for No.
Generation condition 3 cylinder) was faulty in comparison with the condition of other injector magnetic
valves.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Fuel injection amount is limited to a default value.
• Occurrence of abnormal injection control is communicated through CAN.
Control effected by electronic control unit • Injector magnetic valve (for No. 1 and No. 3 cylinders) is deactivated.
• Exhaust gas recirculation control is deactivated.
• Throttle control is deactivated.
Actuator test BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (for No. 3 cylinder)

P1C14: Injector #4-A (Plausibility) (warning lamp flashes: 8)

The engine electronic control unit has judged that injector magnetic valve (for No.
Generation condition 4 cylinder) was faulty in comparison with the condition of other injector magnetic
valves.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not extinguish unless 3 consecutive valid sig-
nals are input).
• Fuel injection amount is limited to a default value.
• Occurrence of abnormal injection control is communicated through CAN.
Control effected by electronic control unit • Injector magnetic valve (for No. 2 and No. 4 cylinders) is deactivated.
• Exhaust gas recirculation control is deactivated.
• Throttle control is deactivated.
Actuator test BC: Injector Test 2
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (for No. 4 cylinder)

13EA-40
TROUBLESHOOTING
P2120: Acc Switch (warning lamp flashes: 65)
Accelerator switch signal is abnormal when compared with outputs of accelerator
Generation condition
pedal position sensors 1 and 2.
Recoverability System recovers if signal becomes normal with starter switch in ON position.
Control effected by electronic control unit Effects no special control.
Service data A2: Accel SW
Electronic control unit connector 10 : Accelerator pedal switch
Inspection #324: Accelerator pedal switch (incorporated in accelerator pedal position sen-
Electrical equipment
sor)
Electric circuit diagram Accelerator pedal switch system

P2122: Acc Sensor 1 (Low) (warning lamp flashes: 24)

Accelerator pedal position sensor 1 voltage is at or below the specified value
Generation condition
(0.49 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control is carried out using output from accelerator pedal position sensor 2.
40: Accel Pedal Sensor Voltage 1, 42: Accel Pedal Position (unfiltered),
Service data
43: Accel Pedal Position (filtered)
Inspection Electronic control unit connector 03 : Accelerator pedal position sensor
Electrical equipment #324: Accelerator pedal position sensor
Electric circuit diagram Accelerator pedal position sensor system

P2123: Acc Sensor 1 (High) (warning lamp flashes: 24)

Accelerator pedal position sensor 1 voltage is at or above the specified value (4.7
Generation condition
V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control is carried out using output from accelerator pedal position sensor 2.
40: Accel Pedal Sensor Voltage 1, 42: Accel Pedal Position (unfiltered),
Service data
43: Accel Pedal Position (filtered)
Inspection Electronic control unit connector 03 : Accelerator pedal position sensor
Electrical equipment #324: Accelerator pedal position sensor
Electric circuit diagram Accelerator pedal position sensor system

P2127: Acc Sensor 2 (Low) (warning lamp flashes: 16)

Accelerator pedal position sensor 2 voltage is at or below the specified value
Generation condition
(0.49 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control is carried out using output from accelerator pedal position sensor 1.
41: Accel Pedal Sensor Voltage 2, 42: Accel Pedal Position (unfiltered),
Service data
43: Accel Pedal Position (filtered)
Inspection Electronic control unit connector 03 : Accelerator pedal position sensor
Electrical equipment #324: Accelerator pedal position sensor
Electric circuit diagram Accelerator pedal position sensor system

13EA-41
 13EA
P2128: Acc Sensor 2 (High) (warning lamp flashes: 16)
Accelerator pedal position sensor 2 voltage is at or above the specified value (4.7
Generation condition
V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Control is carried out using output from accelerator pedal position sensor 1.
41: Accel Pedal Sensor Voltage 2, 42: Accel Pedal Position (unfiltered),
Service data
43: Accel Pedal Position (filtered)
Inspection Electronic control unit connector 03 : Accelerator pedal position sensor
Electrical equipment #324: Accelerator pedal position sensor
Electric circuit diagram Accelerator pedal position sensor system

P2138: Acc Sensor Correlation (warning lamp flashes: 24, 58)

Output voltages from accelerator pedal position sensors 1 and 2 are out of spec-
Generation condition ified range or result of comparison between two voltages deviates from specifica-
tion.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Control effected by electronic control unit Effects no special control.
40: Accel Pedal Sensor Voltage 1, 41: Accel Pedal Sensor Voltage 2,
Service data
42: Accel Pedal Position (unfiltered), 43: Accel Pedal Position (filtered)
Inspection Electronic control unit connector 03 : Accelerator pedal position sensor
Electrical equipment #324: Accelerator pedal position sensor
Electric circuit diagram Accelerator pedal position sensor system

P2146: Injector Bank 1 (Plausibility) (warning lamp flashes: 82)

Generation condition Injector magnetic valve (No. 1 and No. 3 cylinder) circuit open-circuited.
Recoverability System recovers if signal becomes normal with starter switch in ON position.
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 1 and No. 3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BB: Injector Test 1, BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 1 cylinder) or (No. 3 cylinder) system

P2147: Injector Bank 1 (Low) (warning lamp flashes: 82)

Generation condition Injector magnetic valve (No. 1 and No. 3 cylinder) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 1 and No. 3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BB: Injector Test 1, BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 1 cylinder) or (No. 3 cylinder) system

13EA-42
TROUBLESHOOTING
P2148: Injector Bank 1 (High) (warning lamp flashes: 82)
Generation condition Injector magnetic valve (No. 1 and No. 3 cylinder) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 1 and No. 3 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BB: Injector Test 1, BE: Injector Test 4
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 1 cylinder) or (No. 3 cylinder) system

P2149: Injector Bank 2 (Plausibility) (warning lamp flashes: 82)

Generation condition Injector magnetic valve (No. 2 and No. 4 cylinder) circuit open-circuited.
Recoverability System recovers if signal becomes normal with starter switch in ON position.
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BC: Injector Test 2, BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 2 cylinder) or (No. 4 cylinder) system

P2150: Injector Bank 2 (Low) (warning lamp flashes: 82)

Generation condition Injector magnetic valve (No. 2 and No. 4 cylinder) circuit shorted to ground.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BC: Injector Test 2, BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 2 cylinder) or (No. 4 cylinder) system

P2151: Injector Bank 2 (High) (warning lamp flashes: 82)

Generation condition Injector magnetic valve (No. 2 and No. 4 cylinder) circuit shorted to power supply.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
• Outputs injection control fault signal through CAN bus.
Control effected by electronic control unit • Injector magnetic valves (No. 2 and No. 4 cylinders) are stopped.
• Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Actuator test BC: Injector Test 2, BD: Injector Test 3
Electronic control unit connector 05 : Injector magnetic valve
Inspection
Electrical equipment #582: Injector magnetic valve
Electric circuit diagram Injector magnetic valve (No. 2 cylinder) or (No. 4 cylinder) system

13EA-43
 13EA
P2227: Atm Press SNSR (Plausibility) (warning lamp flashes: 19)
The engine electronic control unit has judged that the atmospheric pressure sen-
Generation condition
sor was faulty in comparison with the condition of other pressure sensors.
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 20: Atmospheric Pressure, 21: Boost Pressure Inspection
Inspection
Electrical equipment Engine electronic control unit

P2228: Atm Press SNSR (Low) (warning lamp flashes: 19)

Voltage of atmospheric pressure sensor (inside engine electronic control unit) is
Generation condition
lower than specification (0.19 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 20: Atmospheric Pressure
Inspection
Electrical equipment Engine electronic control unit

P2229: Atm Press SNSR (High) (warning lamp flashes: 19)

Voltage of atmospheric pressure sensor (inside engine electronic control unit) is
Generation condition
higher than specification (4.7 V).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
• Injection quantity is limited.
Control effected by electronic control unit • Exhaust gas recirculation control is stopped.
• Throttle control is stopped.
Service data 20: Atmospheric Pressure
Inspection
Electrical equipment Engine electronic control unit

P2670: MPROP Voltage (Low) (warning lamp flashes: 36)

(1) MPROP (rail pressure control valve) circuit shorted to ground.
Generation condition (2) Engine electronic control unit has received too low (0 V) return voltage from
MPROP (rail pressure control valve).
System recovers if any valid signal is input when starter switch is turned from
Recoverability OFF to ON (the warning lamp does not go out unless 3 consecutive valid signals
are input).
Case (1)
• Injection quantity is limited.
• Exhaust gas recirculation control is stopped.
Control effected by electronic control unit
• Throttle control is stopped.
Case (2)
Injection quantity is fixed to current quantity.
Electronic control unit connector 12 : MPROP (rail pressure control valve)
Inspection Electrical equipment #574: MPROP (rail pressure control valve)
Electric circuit diagram MPROP (rail pressure control valve) system

13EA-44
TROUBLESHOOTING
4. Multi-Use Tester Service Data
• It is possible to see service data and actuator tests simultaneously.
No. Item Data Inspection condition Requirement
Value corresponds to ta-
01 Engine Revolution .rpm Racing (engine running)
chometer indication.
02 LOAD Value . % Starter switch in ON position 0%

0A Reference Injection Quantity . % Starter switch in ON position 0%

20 Atmospheric Pressure . kPa See Gr17. –

21 Boost Pressure . kPa See Gr15, 17. –

Difference pressure across
22 . kPa See Gr17. –
DPF
Intake Air Temp.
30 . °C See Gr15, 17. –
(upper stream)
31 Intake Air Temp. (downstream) . °C See Gr15, 17. –
Value corresponds to
Engine cold
ambient temperature.
32 Water Temperature . °C Engine in process of warming up Value gradually increases.
Engine stopped after warming up Value gradually decreases.
Value corresponds to
Engine cold
ambient temperature.
33 Fuel Temperature (inlet) . °C Engine in process of warming up Value gradually increases.
Engine stopped after warming up Value gradually decreases.
Accelerator pedal gradually pressed
40 Accel Pedal Sensor Voltage 1 . V 0.85 to 4.15 V
from released position
Accelerator pedal gradually pressed
41 Accel Pedal Sensor Voltage 2 . V 0.85 to 4.15 V
from released position
Accelerator pedal not pressed 0%
Accel Pedal Position
42 . % Accelerator pedal gradually pressed Value gradually increases.
(unfiltered)
Accelerator pedal fully pressed 100 %
Accelerator pedal not pressed 0%
Accel Pedal Position
43 . % Accelerator pedal gradually pressed Value gradually increases.
(filtered)
Accelerator pedal fully pressed 100 %
50 Target EGR Valve Position . % See Gr17. –

51 Actual EGR Valve Position . % See Gr17. –

52 Target Intake Throttle Position . % See Gr15, 17. –

53 Actual Intake Throttle Position . % See Gr15, 17. –

54 Target VGT Position . % See Gr15. –

55 Actual VGT Position . % See Gr15. –

60 Air mass flow . g/s See Gr15, 17. –

Value matches battery
80 Power Supply Voltage . V Starter switch ON
voltage.
81 Idle Volume Voltage . V SLOW to FAST 1 to 3 V
Number matches number
1/2/3/4/5/6/7/8/9/10/
82 Q Adjustment Resistor No. – marked on fuel injection
11/NON
rate adjustment resistor.
Value corresponds to
90 Vehicle Speed .km/h Vehicle in motion
speedometer indication.
Value is same as vehicle
Speed Limiter Reference
91 .km/h Vehicle speed limited speed during vehicle
Speed
speed restriction.

13EA-45
 13EA
No. Item Data Inspection condition Requirement
Engine cranked by means of starter
ON
switch.
A0 Starter SW (S) ON/OFF
Starter switch in position except
OFF
START
Starter switch in ON position ON
A1 Starter SW (M) ON/OFF
Starter switch in position except ON OFF
Accelerator pedal not pressed ON
A2 Accel SW ON/OFF
Accelerator pedal pressed OFF
Combination switch ON ON
A4 Auxiliary Brake SW 1 ON/OFF
Combination switch OFF OFF
Clutch pedal pressed ON
A5 Clutch SW ON/OFF
Clutch pedal not pressed OFF
Transmission in neutral ON
B0 Neutral SW ON/OFF
Transmission not in neutral OFF
– ON
B1 Idle Up Cancel SW ON/OFF
Continuously OFF
Diagnosis switch OFF (fuse fitted) ON
C1 Diagnosis SW ON/OFF
Diagnosis switch ON (fuse removed) OFF
Exhaust brake operating ON
C2 Auxiliary Brake M/V 1 ON/OFF Exhaust brake not operating OFF
[Actuator test] AA: Auxiliary Brake M/V 1
Exhaust brake operating ON
D0 Auxiliary Brake Indicator Lamp ON/OFF Exhaust brake not operating OFF
[Actuator test] AB: Auxiliary Brake Indicator Lamp
D1 Glow Relay ON/OFF See Electrical. –
D2 Glow Relay Indicator Lamp ON/OFF See Electrical. –
D3 Starter Safety Relay ON/OFF See Electrical. –
D4 EDU Power Relay ON/OFF See Gr15, 17. –
Starter switch ON (engine not started) ON
E0 MIL ON/OFF No error after engine startup OFF
[Actuator test] B0: MIL
Starter switch ON (engine not started) ON
E1 Diagnosis Lamp ON/OFF No error after engine startup OFF
[Actuator test] B1: Diagnosis Lamp

13EA-46
TROUBLESHOOTING
5. Actuator Tests Performed Using Multi-Use Tester
• It is possible to see service data and actuator tests simultaneously.
No. Item Explanation Confirmation method
A0 EGR 1 See Gr17. –
A3 Intake Throttle 1 See Gr17. –
A4 VGT 1 See Gr15. –
A5 EGR, ETV, VGT See Gr15, 17. –
Exhaust brake 3-way magnetic valve drive signal Operating sound of mag-
[Can be executed when the following conditions are satisfied] netic valve
AA Auxiliary Brake M/V 1 • Vehicle: stationary (vehicle speed 0 km/h) [Service data]
• Starter switch: ON C2: Auxiliary Brake Indica-
• Engine: stopped tor Lamp
Exhaust brake indicator lamp drive signal ON/OFF condition of indi-
[Can be executed when the following conditions are satisfied] cator lamp
AB Auxiliary Brake Indicator Lamp • Vehicle: stationary (vehicle speed 0 km/h) [Service data]
• Starter switch: ON D0: Auxiliary Brake Indica-
• Engine: stopped tor Lamp
AC Relay for Glow Relay See Electrical. –
AD Glow Indicator Lamp See Electrical. –
AE Starter Safety Relay See Electrical. –
AF EDU Relay See Gr15, 17. –
Engine warning lamp (orange) drive signal ON/OFF condition of warn-
[Can be executed when the following conditions are satisfied] ing lamp (orange)
B0 MIL • Vehicle: stationary (vehicle speed 0 km/h) [Service data]
• Transmission: Neutral E0: MIL
• Engine: stopped
Engine warning lamp (red) drive signal ON/OFF condition of warn-
[Can be executed when the following conditions are satisfied] ing lamp (red)
B1 Diagnosis Lamp • Vehicle: stationary (vehicle speed 0 km/h) [Service data]
• Transmission: Neutral E1: Diagnosis Lamp
• Engine: stopped
Rail pressure increased on a constant slope (for 6 seconds) Check that no fuel leaks
[Can be executed when the following conditions are satisfied] from fuel system.
B2 Fuel Leak Check • Vehicle: stationary (vehicle speed 0 km/h)
• Transmission: Neutral
• Diagnosis switch: OFF (with fuse removed)
Selected injector magnetic valve forcibly deactivated Check that injector mag-
BB Injector Test 1 [Can be executed when the following conditions are satisfied] net valve for No. 1 cylinder
• Vehicle: stationary (vehicle speed 0 km/h) stops operating.
• Engine speed: Below 1500 rpm Check that injector mag-
BC Injector Test 2 • Transmission: Neutral net valve for No. 4 cylinder
• No active diagnosis code generated stops operating.
Check that injector mag-
BD Injector Test 3 net valve for No. 2 cylinder
stops operating.
Check that injector mag-
BE Injector Test 4 net valve for No. 3 cylinder
stops operating.

13EA-47
TROUBLESHOOTING
6. Work When Replacing the Engine Electronic Control Unit
• A vehicle identification number (VIN) must be written (registered) to the engine electronic control unit after:
• The current engine electronic control unit is replaced with a new one.
• The current engine electronic control unit is replaced with one that has been used on another vehicle.

Writing a VIN (entire flow)

Connect the Multi-Use Tester (See Gr00).

Turn the starter switch ON (the engine remains stopped).

Confirm the VIN on the vehicle nameplate (See Gr00).

Enter the VIN in the “VIN Writing” window of the Multi-Use Tester to write it to the engine electronic
control unit.

View the “VIN Information” window of the Multi-Use Tester to confirm the VIN written to the engine
electronic control unit.

Check the diagnosis code that is currently recorded, and delete it.

Disconnect the Multi-Use Tester.

6.1 Procedure for writing a VIN

(1) System check
• Select “POWERTRAIN” from the system check menu. After a
while, a menu related to POWERTRAIN/ENGINE appears.
• Select “ENGINE.”

• OBD requirements are automatically detected. Confirm that

“TYPE: EOBD” is detected.
• Click the OK button.

13EA-48
 13EA
• A system test automatically starts and “INCOMPLETE” is indi-
cated. This raises no problem because VIN writing is incomplete
at this stage. Click the OK button.

(2) Writing a VIN

[ENGINE menu] window
• Select “Coding”.

[Coding] window
• Select “VIN Writing”.

[VIN Writing] window

• Enter the VIN (17 digits), which has been confirmed from the ve-
hicle nameplate.
(If a VIN was entered previously, the VIN entered currently is dis-
played in the “Current VIN”.)
• Click the OK button.

[Write error] window

• An error is displayed if a VIN is entered while the engine is on or
the transmission is set at a position other than Neutral. If so,
stop the engine or set the transmission to the Neutral position,
  




 



and restart from the beginning.

13EA-49
TROUBLESHOOTING
[Confirmation of VIN writing] window
• Click the OK button to start writing the VIN to the engine elec-
tronic control unit.

VIN Writing
VIN Writing will start Are you sure?
Engine will be stopped and started If it
is running,please do it carefully and
safety.

[Completion of VIN writing] window

• Click the OK button.

VIN Writing
willcomplete.
VIN Writing is start Are you sure?
Engine will be stopped and started If it
is running,please do it carefully and
safety.

[Result of VIN writing] window

• The VIN that was written to the engine electronic control unit is
displayed. Confirm that the VIN is the right one.
• If the right VIN is displayed, click the Back button and confirm
VIN information in step (3).
• If a wrong VIN is displayed, click the Back button and perform
VIN writing in step (2) again.

(3) VIN confirmation

[Coding] window
• Select “VIN Information.”

[VIN Information] window

• Confirm that the displayed VIN is the right one, and click the
Back button.

13EA-50
 13EA
(4) Confirming and deleting the diagnosis code (memory
clear)
[ENGINE menu] window
• Select “Self-diagnosis.”

[Self-diagnostic] window
• Check the “Pending DTC” field for generation of a diagnosis
code.
• Click the “Confirmed/Stored DTCs” button.

• Check the “Confirmed/Stored DTCs” field for generation of a di-

agnosis code.
• If a diagnosis code is generated in either “Pending DTC” or
“Confirmed/Stored DTCs,” click the Delete button to erase the
diagnosis code.

[Erase diagnosis code] window

• Click the OK button to start deleting the diagnosis code.

[Diagnosis code erasing complete] window

• Click the OK button.

13EA-51
TROUBLESHOOTING
7. Inspections Performed at Electronic Control Unit Connectors
• These inspections aid troubleshooting by enabling you to check whether electronic control unit signals are being
correctly transmitted via the vehicle harness and connectors.
The white-on-black numbers ( 01 , 02 , and so on) correspond to the similarly printed reference numbers in
section “3. Inspections based on diagnosis codes”.

7.1 Electronic control unit connector terminal layout

7.2 Inspection instructions

CAUTION
• Some inspections are performed with the connectors removed. Others are performed with the connectors
fitted. Observe the following caution:
• Do not touch any terminal except those specified for the inspection. Be particularly careful not to cause
short circuits between terminals using the tester probes.

Check item Measurement method

01 [Conditions]
• Starter switch OFF
Resistance of boost air temperature sensor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: B29-B30
• 0°C: 162.3 +48.8
–36.5 kΩ
• 20°C: 61.47 +15.99
–12.35 kΩ
• 80°C: 6.120 +1.095
–0.907 kΩ

13EA-52
 13EA
Check item Measurement method
02 [Conditions]
• Starter switch OFF
Resistance of water temperature sensor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: A40-A41
• 20°C: 2.45 ± 0.14 kΩ
• 80°C: 0.32 kΩ (reference value)
• 110°C: 141.7 ± 2 Ω
03 [Conditions]
• Starter switch ON
Output voltage of accelerator pedal position • Vehicle-side harness connected (Perform inspection on back of connector.)
sensor [Requirements]
Terminals (+)-(–)
B34-B33 and B45 (accelerator pedal position sensor 1)
B46-B33 and B45 (accelerator pedal position sensor 2)
• With accelerator pedal not pressed: 0.85 ± 0.1 V
• With accelerator pedal pressed: 4.15 ± 0.1 V
04 [Conditions]
• Starter switch OFF
Resistance of fuel temperature sensor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: A89-A65
• 20°C: 2.45 +0.14
–0.13 kΩ
• 80°C: 0.318 ± 0.008 kΩ
• 110°C: 0.1417 ± 0.0018 kΩ
05 [Conditions]
• Starter switch OFF
Resistance of injector magnetic valve • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals:
A72-A23 (injector magnetic valve: No. 1 cylinder)
A96-A24 (injector magnetic valve: No. 2 cylinder)
A71-A46 (injector magnetic valve: No. 3 cylinder)
A95-A48 (injector magnetic valve: No. 4 cylinder)
• 0.255 ± 0.04 Ω
06 [Conditions]
• Starter switch OFF
Resistance of engine speed sensor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: A10-A9
• 860 ± 86 Ω (20°C)
07 [Conditions]
• Starter switch OFF
Resistance of cylinder recognition sensor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: A78-A83 (+5 V to GND)
• 200 to 1800 Ω
08 [Conditions]
• Starter switch ON
Output voltage of vehicle speed sensor • Vehicle-side harness connected (Perform inspection on back of connector.)
• Turn wheels slowly using chassis dynamometer.
[Requirements]
Terminals (+)-(–): A67-chassis ground
• High pulse voltage: Approx. 8 ± 1 V
• Low pulse voltage: 0.5 V or lower
09 [Conditions]
• Starter switch ON
Output voltage of idling speed adjustment • Vehicle-side harness connected (Perform inspection on back of connector.)
potentiometer [Requirements]
Terminals (+)-(–): A12-A36
• AUTO position: 4.0 ± 0.1 V
• SLOW position: 3.0 ± 0.1 V
• FAST position: 1.0 ± 0.1 V

13EA-53
TROUBLESHOOTING
Check item Measurement method
10 [Conditions]
• Starter switch ON
Operating voltage of accelerator pedal switch • Vehicle-side harness connected (Perform inspection on back of connec-
tor.)
[Requirements]
Terminals (+)-(–): A20-B33 and B45
• With accelerator pedal pressed: 0 V
• With accelerator pedal not pressed: 5 V
11 [Conditions]
• Starter switch OFF
Resistance of fuel injection rate adjustment • Disconnect connector. Perform inspection on vehicle-side connector.
resistor [Requirements]
Terminals: A35-A88
• No. 1 resistor: 270 ± 13.5 Ω
• No. 2 resistor: 510 ± 25.5 Ω
• No. 3 resistor: 820 ± 41 Ω
• No. 4 resistor: 1,300 ± 65 Ω
• No. 5 resistor: 2,000 ± 100 Ω
• No. 6 resistor: 3,300 ± 165 Ω
• No. 7 resistor: 5,600 ± 280 Ω
• No. 8 resistor: 15,000 ± 750 Ω
• No. 9 resistor: 390 ± 19.5 Ω
• No. 10 resistor: 4,300 ± 215 Ω
• No. 11 resistor: 9,100 ± 455 Ω
12 [Conditions]
• Starter switch OFF
Resistance of MPROP • Disconnect connector. Perform inspection on vehicle-side connector.
(rail pressure control valve) [Requirements]
Terminals: A69-A21, A69-A2, A3-A21, A3-A2
2.6 to 3.15 Ω
13 [Conditions]
• Starter switch ON
Voltage of exhaust brake 3-way magnetic valve • Vehicle-side harness connected (Perform inspection on back of connector.)
[Requirements]
Terminals (+)-(–): A76-A6
• With exhaust brake operating: Corresponding to battery voltage
• With exhaust brake not operating: 0 V
14 [Conditions]
• Starter switch OFF
Resistance of intake air temperature sensor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: A63-A32
• 50°C: 2.20 +0.405
–0.334 kΩ
• 100°C: 0.51 +0.071
–0.061 kΩ
• 150°C: 0.16 +0.018
–0.016 kΩ

15 [Conditions]
• Starter switch OFF
Resistance of CAN resistor • Disconnect connector. Perform inspection on vehicle-side connector.
[Requirements]
Terminals: B5-B6
• 120 ± 6 Ω

13EA-54
INSPECTION OF ELECTRICAL EQUIPMENT
#001 Inspection of combination switch
AK14A connector connection table
Switch position Terminals with continuity
OFF –
Exhaust brake switch
ON 8-9
• For other inspections than shown above, see Electrical.
• If there is any abnormality, replace the switch.

#031 Inspection of clutch switch

Switch position Terminals with continuity
A 1-4
B 2-3
• If there is any abnormality, replace the switch.

#157 Inspection of idling speed adjustment potentiometer

• Apply 5 V DC to terminals 1 and 2 of the idling speed adjustment
potentiometer.
• Turn the knob fully counterclockwise. Then, measure the output
voltage across terminals 2 and 3 (see the diagrams on the left)
while slowly turning the knob clockwise.
• If any measurement is out of specification, replace the idling
speed adjustment potentiometer.
Knob position Output voltage
AUTO (0°) 4.0 ± 0.1 V
Standard value
SLOW (30°) 3.0 ± 0.1 V
FAST (300°) 1.0 ± 0.1 V

13EA-55
 13EA
#262 Inspection of water temperature sensor
• Place the water temperature sensor in a container filled with en-
gine oil.
• Heat the oil to each of the specified temperatures. Stir the oil
well while doing so.
• Measure the resistance between terminals 1 and 2.
20°C 2.45 ± 0.14 kΩ
0.32 kΩ
Standard value 80°C
(reference value)
110°C 147.1 ± 2 Ω
• If either measurement is out of specification, replace the sensor.

#263 Inspection of engine speed sensor

• Measure the resistance between terminals 1 and 2.
Standard value (at 20°C) 860 ± 86 Ω
• If the measurement is out of specification, replace the sensor.

#265 Inspection of vehicle speed sensor

<Without tachograph>
• With the 24 Volts DC applied to terminals to 1 and 2, slowly turn
the shaft of the vehicle speed sensor.
• Measure the maximum voltage (high pulse voltage) and mini-
mum voltage (low pulse voltage) occurring at each specified pair
of terminals.
Terminals Inspection condition Standard value
25-pulse output: Low pulse voltage 0.5 V or lower
terminals 1 and 4 High pulse voltage 8±1V
• If any measurement is out of specification, replace the sensor.

<With tachograph>
• Inspection of a vehicle speed sensor with tachograph must be
carried out at a service shop licensed by individual governmental
authorities or a SIEMENS VDO-authorized service shop.

#304 Inspection of boost air temperature sensor

• Place the boost air temperature sensor in a container filled with
engine oil.
• Heat the oil to each of the specified temperatures. Stir the oil
well while doing so.
• Measure the resistance between terminals 1 and 2.
0°C 162.3 +48.8
–36.5 kΩ
Standard value 20°C 61.47 +15.99
–12.35 kΩ
80°C 6.120 +1.095
–0.907 kΩ
• If either measurement is out of specification, replace the sensor.

13EA-56
INSPECTION OF ELECTRICAL EQUIPMENT
#305 Inspection of intake air temperature sensor
• Place the sensor in a container filled with engine oil.
• Heat the oil to each of the specified temperatures. Stir the oil
well while doing so.
• Measure the resistance between terminals 1 and 2.
50°C 2.20 +0.405
–0.334 kΩ
Standard value 100°C 0.51 +0.071
–0.061 kΩ
150°C 0.16 +0.018
–0.016 kΩ
• If either measurement is out of specification, replace the sensor.

#318 Inspection of boost pressure sensor

• Apply 5 V DC to terminals 3 and 1.
• Apply air pressure. Gradually increase it and, while doing so,
measure the output voltage occurring at terminals 2 and 1.
Air pressure
Voltage
(gauge reading)
Standard value
99 kPa {1.0 kgf/cm2} Approx. 2.5 V
2}
232.3 kPa {2.3 kgf/cm Approx. 4.5 V
• If any measurement is out of specification, replace the sensor.

#319 Inspection of common rail pressure sensor

• The sensor cannot easily be inspected in isolation, so you must
evaluate it indirectly by inspection of system harnesses and re-
lated parts.
• If there is no abnormality in any related part but the system is ab-
normal, replace the common rail.

#320 Inspection of cylinder recognition sensor

• Measure the resistance between terminals 2 and 3.
Standard value 200 to 1800 Ω
• If the measurement is out of specification, replace the sensor.

#323 Inspection of fuel temperature sensor

• Measure the resistance between terminals 1 and 2.
20°C 2.45 +0.14
–0.13 kΩ
Standard value 80°C 0.318 ± 0.008 kΩ
110°C 0.1417 ± 0.0018 kΩ
• If any measurement is out of specification, replace the sensor.

13EA-57
 13EA
#324 Inspection of accelerator pedal position sensor
[Inspection]
• Apply 5 V DC to terminals 4 and 2 of the accelerator pedal posi-
tion sensor.
• Measure the output voltage at terminals 2 and 5 (sensor 1) and
the output voltage at terminals 1 and 2 (sensor 2) with the accel-
erator lever in each specified position.
Accelerator lever position Output voltage
Idling position A 0.85 ± 0.1 V
Standard value Accelerator pedal switch
1.0 ± 0.24 V
operating position B
Full load position C 4.15 ± 0.1 V
A: Position in which accelerator lever is touching stopper
B: Position at which continuity between terminals 2 and 3 dis-
appears as accelerator pedal is pushed downward
C: Position in which accelerator lever is touching stopper bolt
• If any output voltage is out of specification, make an adjustment.
• If any output voltage is still out of specification when you have
made an adjustment, replace the sensor.

[Adjustment]
• To adjust the output voltage for the idling position A, loosen the
screws and move the accelerator pedal position sensor. Tighten
the screws after making the adjustment.
• To adjust the output voltage for the full load position C, loosen
the nut and make the adjustment using the stopper bolt. After
making the adjustment, lock the stopper bolt in position with the
nut.

13EA-58
INSPECTION OF ELECTRICAL EQUIPMENT
#352 Pulse converter inspection
• Connect the pulse converter to the tester as shown.
• Slowly rotate the shaft of the vehicle speed sensor by hand, and
measure maximum voltage (high pulse voltage) and minimum
voltage (low pulse voltage) appearing between each of OUT ter-
minals (4 to 6, 8, 9, 11 to 14) and terminal 10 of the pulse divider.
Low pulse
8-pin pulse 1.5 V or less
voltage
output terminals
8 (or 9) to 10 High pulse
11.5 V or more
Standard voltage
value Low pulse
25-pin pulse 0.5 V or less
voltage
output terminals
8 (or 9) to 10 High pulse
8 +1.5
–1.0 V
voltage
• If measurements deviate from the specified standard values, re-
place the pulse converter.

#565 Inspection of exhaust brake 3-way magnetic valve

• Perform the following checks. If there is any abnormality, replace
the exhaust brake 3-way magnetic valve.
(1) Check of operation
• Gradually increase from zero the voltage applied to terminals 1
and 2.
• Observe the voltage when the exhaust brake 3-way magnetic
valve operates.
(Determine the magnet valve’s OFF-ON operation from the op-
erating sound.)
Standard value (min. operating voltage) 22 V or lower

(2) Check of continuity and airtightness

• Vacuum pressure applied during check:
–100 kPa {–10 kgf/cm2}

#574 Inspection of MPROP

(rail pressure control valve)
• Measure the resistance between terminals 1 and 2.
Standard value 2.6 to 3.15 Ω
• If the measurement is out of specification, replace the supply
pump.

13EA-59
 13EA
#582 Inspection of injector magnetic valve
• Measure the resistance between terminals 1 and 2.
Standard value (at 20°C) 0.255 ± 0.04 Ω
• If the measurement is out of specification, replace the injector.

#828 Inspection of fuel injection rate adjustment resistor

• Measure the resistance of the resistor number marked on the
fuel injection rate adjustment resistor.
1 270 ± 13.5 Ω
2 510 ± 25.5 Ω
3 820 ± 41 Ω
4 1300 ± 65 Ω
5 2000 ± 100 Ω
Standard value
Resistor No. 6 3300 ± 165 Ω
(at 20°C)
7 5600 ± 280 Ω
8 15000 ± 750 Ω
9 390 ± 19.5 Ω
10 4300 ± 215 Ω
11 9100 ± 455 Ω
• If the measurement is out of specification, replace the fuel injec-
tion rate adjustment resistor with one that has the same resistor
number and same specified resistance.
CAUTION
• The fuel injection rate adjustment resistor is matched to the
engine. If you replace it, be sure to replace it with one that
has the same resistor number.

13EA-60
INSTALLED LOCATIONS OF PARTS

13EA-61
 13EA

13EA-62
INSTALLED LOCATIONS OF PARTS

13EA-63
 13EA

13EA-64
INSTALLED LOCATIONS OF PARTS

13EA-65
ELECTRIC CIRCUIT DIAGRAM

13EA-66
 13EA

13EA-67
ELECTRIC CIRCUIT DIAGRAM

13EA-68
 13EA

13EA-69
ELECTRIC CIRCUIT DIAGRAM

13EA-70
 13EA

13EA-71