1NZ-FXE STARTING SMART KEY SYSTEM

ST1

SMART KEY SYSTEM

PRECAUTION
NOTICE:
When disconnecting the cable from the negative (-)
battery terminal, initialize the following system(s) after
the cable is reconnected.
System Name

See Procedure

Power Window Control System

IN-32

When the warning light is illuminated or the battery

has been disconnected and reconnected, pressing the
power switch may not start the system on the first try.
If so, press the power switch again.
When the power source control ECU is replaced with a
new ECU and the battery's negative (-) terminal is
reconnected, the power switch automatically turns ON
(IG). However, when the power source control ECU is
removed and then reinstalled, the power switch
remains in the same mode as when the ECU was
removed.

ST

ST2

1NZ-FXE STARTING SMART KEY SYSTEM

PARTS LOCATION

DRIVER SIDE JUNCTION BLOCK

- BODY ECU
- IG1 RELAY
- AM1 FUSE

POWER SOURCE CONTROL ECU

POWER SWITCH
TRANSPONDER KEY ECU

GATEWAY ECU

HYBRID VEHICLE CONTROL ECU

ST
ACC RELAY

TRANSMISSION CONTROL ECU

KEY SLOT
STOP LIGHT SWITCH ASSEMBLY

B128128E01

1NZ-FXE STARTING SMART KEY SYSTEM

ST3

ENGINE ROOM JUNCTION BLOCK

- IG2 RELAY
- AM2 FUSE

ST

B128129E01

ST4

1NZ-FXE STARTING SMART KEY SYSTEM

SYSTEM DIAGRAM

Key

Key Slot
Transponder Key
Amplifier and Coil

Halfway Switch

Power Switch

Full Switch

Key Interlock Solenoid

Transponder
Key ECU

Serial Communication

ACC Relay

ST
BEAN
Transmission
Control ECU

IG1 Relay
Power
Source
Control
ECU

IG2 Relay

Stop Light Switch

Certification ECU*
Combination Meter
- Vehicle Speed
Gateway ECU

CAN
Hybrid Vehicle
Control ECU

*: w/ Smart Key System (for door lock)

B128116E01

ST5

1NZ-FXE STARTING SMART KEY SYSTEM

Sender

Receiver

Signal

Line

Hybrid vehicle control ECU

Power source control ECU

BEAN

Shift position signal (power

source control)
Drive OK signal (power stop
control)
Stop switch signal (power
source control)

Meter

Power source control ECU

Vehicle speed signal (power

source control)

BEAN

Body ECU

Power source control ECU

BEAN

Diagnosis erasure
Diagnostic tool request
Door lock position signal
(driver, passenger and rear
doors) (power switch
illumination control)
Courtesy switch signal
(driver, passenger and rear
doors) (power switch
illumination control)
Vehicle model signal (power
source control switch)
IG switch signal (power
source control)
ACC switch signal (power
source control)
Key switch signal (key lock
control)
Fading dome light illumination
request signal (power switch
illumination control)
Taillight illumination signal
(power switch illumination
control)
All doors courtesy switch
signal (power switch
illumination control)

ST

Steering lock ECU

Power source control ECU

Immobiliser information signal

(power source control)

BEAN

Power source control ECU

Body ECU

Power switch signal (for security

cancel)

BEAN

Power source control ECU

Steering lock ECU

Immobiliser ID match request

signal (ID match start at
power ON)
Key insertion status signal
(for immobiliser control)

BEAN

P status signal (key interlock

control)
P control ECU malfunctioning
status signal (power source
control, key lock control)
Auto P cancel signal (power
source control, key lock
control)
NP status signal (power
source control, key lock
control)
Auto P OK signal (power
source control, key lock
control)

BEAN

Immobiliser ID match request

signal (smart ignition control)
Key insertion status signal
(smart ignition control)
Key code confirmation signal
(wireless control)

BEAN

Transmission control ECU

Power source control ECU

Certification ECU

Power source control ECU

Theft warning ECU

Power source control ECU

Power switch signal (for security

set and cancel)

BEAN

ST6

ST

1NZ-FXE STARTING SMART KEY SYSTEM

Sender

Receiver

Signal

Line

Power source control ECU

Transmission control ECU

Power source OFF ready signal

(power source AUTO OFF
control)

BEAN

1NZ-FXE STARTING SMART KEY SYSTEM

ST7

SYSTEM DESCRIPTION
1.

SMART KEY SYSTEM DESCRIPTION

(a) The smart key system uses a push-type power
switch, which the driver operates by inserting a key
into the key slot or by merely carrying the key*. This
system consists of a power source control ECU,
power switch, key slot, key, ACC relay, IG1 relay,
IG2 relay and transponder key ECU. The power
source control ECU controls the system. This
system operates in conjunction with the engine
immobiliser system and the smart key system*.
The table below shows the transition of the power
switch, which depends on whether the brake pedal
is depressed or released.
HINT:
*: w/ Smart key system (for door lock)

Brake Pedal Operation

Power Switch Operation

Released

Power mode changes between OFF, ON (ACC) and ON (IG) power

switch is pressed

Depressed

Power mode changes to ON (READY) from any power mode

2.

FUNCTION OF COMPONENT

Components

Function

Key

Key slot

Power switch

IG1 relay
IG2 relay
ACC relay

When driver inserts key into key slot, built-in transponder chip
transmits ID code signal to transponder key amplifier which is
provided in key slot.
For a vehicle with smart entry system (for door lock), if driver
operates power switch with key in driver's possession, key
receives signals from oscillators and transmits ID code to door
control receiver.
Halfway switch:
Detects whether key is inserted and outputs signal to transponder
key ECU.
Full switch:
Detects whether key is inserted and outputs signal to power
source control ECU.
Transponder key amplifier and coil:
Receives ID code signal from transponder chip which is built into
key, and outputs it to transponder key ECU.
Key interlock solenoid:
Power source control ECU operates this solenoid in accordance
with power switch mode and shift position to keep key locked in
key slot.
In accordance with shift position and stop light switch's condition,
changes power modes in 4 stages as follows: OFF, ON (ACC),
ON (IG) and ON (READY).
Power mode can be determined by illumination / flash / color of
power switch indicator. Push button start system malfunctions can
also be determined.

Operates in accordance with power source control ECU to supply

power to respective system.

Stop light switch

Outputs brake pedal's status to power source control ECU.

Parking lock actuator

Power source control ECU

Operates in accordance with signals from transmission control

ECU to actuate parking lock mechanism.
Detects actuation status of parking lock (whether shift position is P
or other position) and outputs it to transmission control ECU.

Controls push button start system in accordance with signals received

from switches and ECUs.

ST

ST8

1NZ-FXE STARTING SMART KEY SYSTEM

Components

Function

Transponder key ECU

Transmission control ECU

Hybrid vehicle control ECU

Certification ECU*

Actuates parking lock actuator upon receiving power switch OFF

signal from power source control ECU.
Transmits actuation status of parking lock (whether shift position
is P or other position) to power source control ECU.
Starts hybrid control system in accordance with system start
signal received from power source control ECU.
Receives hybrid control system start authorization signal from
transponder key ECU.

Checks ID code received from door control receiver and transmits

check results to transponder key ECU.

3.

ST

Controls engine immobiliser system by recognizing key ID code

transmitted by transponder key amplifier.
Receives ID code check results from certification ECU*.
Transmits key ID code check results to power source control
ECU.
Transmits hybrid control system start authorization signal to
hybrid vehicle control ECU.

HINT:
*: w/ Smart key system (for door lock)
SYSTEM FUNCTION
The electric controls of the smart key system are
described below:

Control

Outline

Power switch control

(w/o smart key system (for door lock))

Transponder key ECU checks ID code when key is inserted into key
slot. Power source control ECU verifies check results and authorizes
operation of switch.

Power switch control

(w/ smart key system (for door lock))

When driver operates power switch with key in driver's

possession, power source control ECU starts indoor electrical key
oscillator, which transmits request signal to key. Upon receiving
this signal, key transmits ID code signal to certification ECU.
Transponder key ECU verifies check results received from
certification ECU via BEAN and sends them to power source
control ECU. Based on these results, power source control ECU
authorizes operation of power switch.

Auto P control

While shift position is not P, if power switch is turned OFF, hybrid

vehicle control ECU commands transmission control ECU to activate
parking lock actuator and change shift position to P.

Diagnosis

When power source control ECU detects malfunction, power source

control ECU diagnoses and memorizes malfunction.

4.

POWER SWITCH CONTROL (WITH KEY)

When a key is inserted into the key slot and the
transponder key ECU recognizes the ID code of the
key, the power source control ECU authorizes
operation of the power switch.
A power mode (OFF, ON (ACC) and ON (IG)) can be
selected by pressing the power switch. Press, release
and press the power switch until the desired power
mode is selected (the power mode cycle in the order
shown above). If the driver pushes the power switch
while depressing the brake pedal (the stop light switch
turns ON), the power mode will change to ON
(READY) regardless of the previous power mode.
After approximately 1 hour has passed with the power
switch ON (ACC) and the shift position in P, the power
source control ECU will automatically turns OFF the
power (the power mode changes to OFF).

ST9

1NZ-FXE STARTING SMART KEY SYSTEM

The illustration below shows the transition of power

modes.

Shift Position

Except P

P
Power Switch
Power Switch

Power Switch
with Brake

Power Switch

Power Switch
with Brake

Shift position is moved to P

automatically
OFF

ON (ACC)

ON (IG)

ST
ON (READY)

: Transition of Power Mode

(only with vehicle stopped)

: Transition of Power Mode

)

B128117E01

5.

HINT:
While the vehicle is being driven normally, operation of
the power switch is disabled. However, if the hybrid
control system must be stopped in an emergency while
the vehicle is being driven, pressing the power switch for
at least 3 seconds can stop the hybrid control system.
Power mode changes from ON (READY) to ON (ACC).
DIAGNOSIS
If a malfunction occurs in the IG circuit, the power source
control ECU will perform the controls listed in the table
below and record a DTC.

IG Circuit Malfunction

Details

Malfunction occurs during ON (IG) mode

Hold circuit in power source control ECU continues to supply

power to IG1 and IG2 relays. At this time, power source control
ECU begins flashing amber-colored indicator on power switch.
After power switch is set to OFF, power source control ECU
continues flashing indicator on power switch for 15 seconds.
Hybrid system cannot be restarted.

ST10

1NZ-FXE STARTING SMART KEY SYSTEM

IG Circuit Malfunction

Details

Malfunction occurs during ON (ACC) or OFF mode

ST

When power switch is set to ON (IG) and malfunction is detected,

power switch automatically turns OFF.
If same malfunction as above is detected continuously 3 times,
power source control ECU begins flashing amber-colored
indicator on power switch for 15 seconds.
Hybrid system cannot be restarted.

1NZ-FXE STARTING SMART KEY SYSTEM

ST11

HOW TO PROCEED WITH

TROUBLESHOOTING
HINT:
Use this procedure to troubleshoot the smart key system.
*: Use the intelligent tester.

VEHICLE BROUGHT TO WORKSHOP

NEXT

INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX

COMMUNICATION SYSTEM (BEAN)*
(a) Use the intelligent tester to check if Multiplex
Communication System (MPX) is functioning normally.

Result
Result

Proceed to

MPX DTC is not output

MPX DTC is output

GO TO MULTIPLEX COMMUNICATION
SYSTEM

ST
CHECK FOR DTC*
(a) Check for DTC and note any codes that are output.
(b) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC by simulating
the original activity that the DTC suggests.

Result
Result

Proceed to

The DTC does not reoccur

The DTC reoccurs

Go to step 6

PROBLEM SYMPTOMS TABLE

Result
Result

Proceed to

Fault is not listed in problem symptoms table

Fault is listed in problem symptoms table

Go to step 6

ST12

1NZ-FXE STARTING SMART KEY SYSTEM

OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) DATA LIST / ACTIVE TEST (see page ST-16)
(1) Inspection with the intelligent tester (DATA LIST)
(2) Inspection with the intelligent tester (ACTIVE TEST)
(b) On-vehicle Inspection (see page ST-18)
(c) Terminal of ECU (see page ST-11)

NEXT

ADJUST, REPAIR OR REPLACE

NEXT

7
NEXT
END

ST

CONFIRMATION TEST

ST13

1NZ-FXE STARTING SMART KEY SYSTEM

PROBLEM SYMPTOMS TABLE

HINT:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "Suspected Area" column
of the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace parts as
necessary.
Smart key system
Symptom

Power mode does not change to ON (IG and ACC)

Power mode does not change to ON (ACC)

Power mode does not change to ON (IG)

Power mode does not change to ON (READY)

Suspected area

See page

1. Power source control ECU

2. AM1 fuse

3. AM2 fuse

4. Power switch

ST-74

5. Key slot

ST-77

6. Wire harness

ST-47

1. Power source control ECU

2. AM1 fuse

3. AM2 fuse

4. ACC relay

5. Wire harness

ST-61

1. Power source control ECU

2. AM1 fuse

3. AM2 fuse

4. IG1 relay

5. IG2 relay

6. Wire harness

ST-54

1. Power source control ECU

2. Stop light switch

LI-111

3. Wire harness

ST-66

ST

ST14

1NZ-FXE STARTING SMART KEY SYSTEM

TERMINALS OF ECU
1.

CHECK POWER SOURCE CONTROL ECU

P6

B075721E23

(a) Disconnect the P6 ECU connector.

(b) Measure the resistance and voltage of the wire
harness side connector.

ST

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

AM1 (P6-33) - Body

ground

R - Body ground

+B power supply

Always

10 to 14 V

AM2 (P6-12) - Body

ground

W - Body ground

+B power supply

Always

10 to 14 V

CDSW (P6-25) - Body

ground

L - Body ground

Key condition

No key in key slot

Below 1

CDSW (P6-25) - Body

ground

L - Body ground

Key condition

Key inserted

10 k or higher

SSW1 (P6-14) - Body

ground

B - Body ground

Power switch signal

Power switch pushed

Below 1

SSW1 (P6-14) - Body

ground

B - Body ground

Power switch signal

Power switch not pushed

10 k or higher

SSW2 (P6-37) - Body

ground

Y - Body ground

Power switch signal

Power switch pushed

Below 1

SSW2 (P6-37) - Body

ground

Y - Body ground

Power switch signal

Power switch not pushed

10 k or higher

GND2 (P6-6) - Body

ground

W-B - Body ground

Ground

Always

Below 1

If the result is not as specified, there may be a

malfunction on the wire harness side.
(c) Reconnect the P6 ECU connector.
(d) Measure the resistance and voltage of the
connector.
Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

SOL1 (P6-3) - GND2 (P66)

P - W-B

Power switch signal

Brake pedal is not

depressed, power switch
ON (ACC)

0V

SOL1 (P6-3) - GND2 (P66)

P - W-B

Power switch signal

Brake pedal is not

depressed, power switch
ON (IG)

10 to 14 V

SOL2 (P6-20) - GND2

(P6-6)

GR - W-B

Power switch signal

Always

Below 1

ACCD (P6-11) - GND2

(P6-6)

G - W-B

ACC signal

Power switch OFF

0V

ACCD (P6-11) - GND2

(P6-6)

G - W-B

ACC signal

Power switch ON (ACC)

10 to 14 V

IG1D (P6-34) - GND2 (P66)

B - W-B

IG1 signal

Power switch ON (ACC)

0V

ST15

1NZ-FXE STARTING SMART KEY SYSTEM

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

IG1D (P6-34) - GND2 (P66)

B - W-B

IG1 signal

Power switch ON (IG)

10 to 14 V

IG2D (P6-35) - GND2 (P66)

V - W-B

IG2 signal

Power switch ON (ACC)

0V

IG2D (P6-35) - GND2 (P66)

V - W-B

IG2 signal

Power switch ON (IG)

10 to 14 V

STP (P6-1) - GND2 (P6-6)

L - W-B

Stop light signal

Brake pedal depressed

10 to 14 V

STP (P6-1) - GND2 (P6-6)

L - W-B

Stop light signal

Brake pedal released

0V

2.

If the result is not as specified, the ECU may have a

malfunction.
CHECK TRANSPONDER KEY ECU

T5

B076120E03

(a) Disconnect the T5 ECU connector.

(b) Measure the resistance and voltage of the wire
harness side connector.
Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

CPUB (T5-3) - GND (T522)

L - W-B

Battery

Always

10 to 14 V

IG (T5-4) - GND (T5-22)

O - W-B

Power switch (IG)

Power switch OFF

0V

IG (T5-4) - GND (T5-22)

O - W-B

Power switch (IG)

Power switch ON (IG)

10 to 14 V

ACC (T5-12) - GND (T522)

P - W-B

Power switch (ACC)

Power switch OFF

0V

ACC (T5-12) - GND (T522)

P - W-B

Power switch (ACC)

Power switch ON (ACC)

10 to 14 V

CUWS (T5-5) - GND (T522)

B - W-B

Halfway switch

No key in key slot

10 k or higher

CUWS (T5-5) - GND (T522)

B - W-B

Halfway switch

Key inserted

Below 1

AGND (T5-7) - GND (T522)

P - W-B

Ground

Always

Below 1

GND (T5-22) - Body

ground

W-B - Body ground

Ground

Always

Below 1

If the result is not as specified, there may be a

malfunction on the wire harness side.
(c) Reconnect the T5 ECU connector.
(d) Measure the voltage of the connector.
Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

CUWS (T5-5) - GND (T522)

B - W-B

Halfway switch

No key in key slot

10 to 14 V

CUWS (T5-5) - GND (T522)

B - W-B

Halfway switch

Key inserted

Below 1 V

VC5 (T5-20) - GND (T522)

Y - W-B

Power source

No key in key slot

0V

ST

ST16

1NZ-FXE STARTING SMART KEY SYSTEM

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

VC5 (T5-20) - GND (T522)

Y - W-B

Power source

Key inserted

4.6 to 5.4 V

3.

If the result is not as specified, the ECU may have a

malfunction.
CHECK HYBRID VEHICLE CONTROL ECU

H16

H17

H15

H14

B076353E01

(a) Disconnect the H14, H15, H16 and H17 ECU

connectors.
(b) Measure the resistance and voltage of the
connectors.

ST

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

ST2 (H14-5) - GND1

(H14-1)

Y - W-B

Ignition start control signal

input

Power switch ON
(READY)

10 to 14 V

IGSW (H14-7) - GND1

(H14-1)

O - W-B

Ignition ready control

signal input

Power switch ON (IG)

10 to 14 V

BATT (H15-6) - GND1

(H14-1)

Y - W-B

Battery

Always

10 to 14 V

+B1 (H16-7) - GND1

(H14-1)

L - W-B

Ignition power supply

Power switch ON (IG)

10 to 14 V

+B2 (H16-6) - GND1

(H14-1)

L - W-B

Ignition power supply

Power switch ON (IG)

10 to 14 V

GND1 (H14-1) - Body

ground

W-B - Body ground

Ground

Always

Below 1

GND2 (H14-4) - Body

ground

W-B - Body ground

Ground

Always

Below 1

4.

If the result is not as specified, the ECU may have a

malfunction.
CHECK TRANSMISSION CONTROL ECU
T4

G027319E01

(a) Disconnect the T4 ECU connector.

ST17

1NZ-FXE STARTING SMART KEY SYSTEM

(b) Measure the resistance and voltage of the wire

harness side connector.
Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

BATT (T4-13) - Body

ground

L - Body ground

+B power supply

Always

10 to 14 V

+B (T4-1) - Body ground

L - Body ground

Ignition power supply

Power switch ON (IG)

10 to 14 V

E1 (T4-15) - Body ground

W-B - Body ground

Ground

Always

Below 1

E01 (T4-3) - Body ground

W-B - Body ground

Ground

Always

Below 1

E02 (T4-2) - Body ground

W-B - Body ground

Ground

Always

Below 1

If the result is not as specified, the ECU may have a

malfunction.

ST

ST18

1NZ-FXE STARTING SMART KEY SYSTEM

DIAGNOSIS SYSTEM

SG

CG

1.

DESCRIPTION
(a) Smart key system data and its Diagnosis Trouble
Codes (DTCs) can be read through the Data Link
Connector 3 (DLC3). When the system seems to be
malfunctioning, use the intelligent tester to check for
malfunctions and perform repairs.

2.

CHECK DLC3
HINT:
The vehicle uses the ISO 15765-4 communication
protocol. The terminal arrangement of the DLC3
complies with SAE J1962 and matches the ISO 15765-4
format.

SIL

1 2 3 4 5 6 7 8
9 10 1112 13 14 1516
BAT

A082779E96

Symbol

Terminal No.

Name

Reference terminal

Result

Condition

SIL

Bus "+" line

5 - Signal ground

Pulse generation

During transmission

CG

Chassis ground

Body ground

Below 1

Always

SG

Signal ground

Body ground

Below 1

Always

BAT

16

Battery positive

Body ground

11 to 14 V

Always

ST
Intelligent Tester

CAN VIM
DLC3
A082795E01

3.

If the result is not as specified, the DLC3 may have a

malfunction. Repair or replace the harness and
connector.
HINT:
Connect the cable of the intelligent tester (with CAN
VIM) to the DLC3, turn the power switch ON (IG) and
attempt to use the intelligent tester. If the display informs
that a communication error has occurred, there is a
problem either with the vehicle or with the tester.
If communication is normal when the tester is
connected to another vehicle, inspect the DLC3 of the
original vehicle.
If communication is still not possible when the tester
is connected to another vehicle, the problem is
probably in the tester itself. Consult the Service
Department listed in the tester's instruction manual.
INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, replace the battery before
proceeding.

1NZ-FXE STARTING SMART KEY SYSTEM

ST19

DTC CHECK / CLEAR

Intelligent Tester

1.

CAN VIM
DLC3
A082795E01

2.

CHECK DTC
(a) Connect the intelligent tester to the Controller Area
Network Vehicle Interface Module (CAN VIM). Then
connect the CAN VIM to the DLC3.
(b) Turn the power switch ON (IG).
(c) Read the DTCs by following the directions on the
tester screen.
HINT:
Refer to the intelligent tester operator's manual for
further details.
CLEAR DTC
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG).
(c) Erase the DTCs by following the directions on the
tester screen.
HINT:
Refer to the intelligent tester operator's manual for
further details.

ST

ST20

1NZ-FXE STARTING SMART KEY SYSTEM

DATA LIST / ACTIVE TEST

1.

READ DATA LIST

HINT:
Using the intelligent tester's DATA LIST allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the DATA LIST early in
troubleshooting is one way to save time.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG).
(c) Read the DATA LIST according to the display on the
tester.

Power source control ECU

ST

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

STR UNLK SW

Steering unlock switch /

ON or OFF

ON: Key is in key slot

OFF: No key is in key slot

READY SIG

Ready signal /
ON or OFF

ON: Power switch ON (READY)

OFF: Power switch OFF or ON
(IG) or ON (ACC)

VEHICLE SPD SIG

Vehicle speed signal /

ON or OFF

Stop: Vehicle is stopped

Run: Vehicle is running

SHIFT P SIG

Shift P signal /
ON or OFF

ON: Shift P signal ON (shift

position is P)
OFF: Shift P signal OFF (shift
position is not P)

ST READY MON

Starter relay monitor /

ON or OFF

ON: Starter relay signal ON

OFF: Starter relay signal OFF

ACC CUT SIG

Relay monitor /
ON or OFF

ON: ACC relay signal ON

OFF: ACC relay signal OFF

E/G COND

Engine condition /
Stop or Run

Stop: Engine is stopped

Run: Engine is not running

SHIFT P PULSE

Shift P signal pulse /

Unknown, Error2, Normal2,
Error1, Normal3, Error3 or
Normal1

Unknown: Other
Error2: Signal is abnormal and
shift position is P
Normal2: Signal is normal and
shift position is P
Error1: Signal is abnormal and
shift position cannot be
determined
Normal3: Signal is normal and
shift position in not P
Error3: Signal is abnormal and
shift position in not P
Normal1: Signal is normal and
shift position cannot be
determined

CARD H-INS SW

Halfway switch /
ON or OFF

ON: Key is half-inserted

OFF: Key is not half-inserted

CARD F-INS SW

Full switch /
ON or OFF

ON: Key is fully inserted

OFF: Key is not fully inserted

STOP LAMP SW1

Stop light switch 1 /

ON or OFF

ON: Brake pedal depressed

OFF: Brake pedal released

STOP LAMP SW2

Stop light switch 2 /

ON or OFF

ON: Brake pedal released

OFF: Brake pedal depressed

ST SW1

Start switch 1 /
ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

ST SW2

Start switch 2 /
ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

ST21

1NZ-FXE STARTING SMART KEY SYSTEM

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

RATCH CIRCUIT

Ratch circuit /
ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF or ON
(ACC) or ON (READY)

IG1 RELAY MON 1

IG1 outer relay monitor /

ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

IG1 RELAY MON 2

IG1 inner relay monitor /

ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

IG2 RELAY MON 1

States of the IG2 outer relay

monitor /
ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

IG2 RELAY MON 2

IG2 Inner relay monitor /

ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

ACC RELAY MON

ACC relay monitor /

ON or OFF

ON: Power switch ON (ACC)

OFF: Power switch OFF

PWR COND

Power supply condition /

IG2 ON, ST ON, All OFF, IG1 ON
or ACC ON

IG2 ON: IG2 relay ON

ST ON: ST relay ON
All OFF: All relay OFF
IG1 ON: IG1 relay ON
ACC ON: ACC relay ON

2.

PERFORM ACTIVE TEST

HINT:
Performing the intelligent tester's ACTIVE TEST allows
relay, VSV, actuator and other items to be operated
without removing any parts. Performing the ACTIVE
TEST early in troubleshooting is one way to save time.
The DATA LIST can be displayed during the ACTIVE
TEST.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG).
(c) Perform the ACTIVE TEST according to the display
on the tester.

Power source control ECU

Item

Test Details

Diagnostic Note

KEY LOCK

Key lock (turn power switch OFF during test;

turn power switch ON (IG)) ON / OFF

LIGHTING IND

Indicator for lighting ON / OFF

IND CONDITION

Indicator Green / Red / No Sig

ST

ST22

1NZ-FXE STARTING SMART KEY SYSTEM

DIAGNOSTIC TROUBLE CODE CHART

1.

DTC CHECK
If a malfunction code is displayed during the DTC check,
check the suspected area listed for that code in the table
below, and proceed to the appropriate page.

Smart key system

ST

DTC No.

Detection Item

Trouble Area

See page

B2271

Ignition Hold Monitor Malfunction

- Power source control ECU

- AM1 fuse
- AM2 fuse
- Wire harness

ST-20

B2272

Ignition 1 Monitor Malfunction

- Power source control ECU

- IG1 relay
- Wire harness

ST-22

B2273

Ignition 2 Monitor Malfunction

- Power source control ECU

- Wire harness

ST-26

B2274

ACC Monitor Malfunction

- Power source control ECU

- ACC relay
- Wire harness

ST-28

B2275

STSW Monitor Malfunction

- Power source control ECU

- Wire harness

ST-30

B2277

Detecting Vehicle Submersion

- Power source control ECU

ST-32

B2278

Engine Switch Circuit Malfunction

- Power source control ECU

- Power switch
- Wire harness

ST-33

B2281

"P" Signal Malfunction

- Power source control ECU

- Transmission control ECU
- Wire Harness

ST-36

B2282

Vehicle Speed Signal Malfunction

- Power source control ECU

- Combination meter
- Wire Harness

ST-38

B2284

Brake Signal Malfunction

- Power source control ECU

- Stop light switch
- Wire Harness

ST-40

B2286

Ready Signal Malfunction

- Power source control ECU

- Hybrid vehicle control ECU
- Wire harness

ST-43

B2287

LIN Communication Master

Malfunction

- Power source control ECU

- Transponder key ECU
- Wire harness

ST-45

B2289

Key Collation Waiting Time Over

- Power source control ECU

- Engine immobiliser system
- Wire harness

ST-45

1NZ-FXE STARTING SMART KEY SYSTEM

ST23

ON-VEHICLE INSPECTION
1.

CHECK POWER SWITCH MODE CHANGE FUNCTION

(a) Check the function of the power switch.
(1) Check that power switch mode changes in
accordance with the conditions of the shift
position and brake pedal.
HINT:
For the vehicles with the smart key system (for
door lock), the power switch functions not only
when the key is inserted into the key slot but
also when the driver carries the key.

Shift Position

Brake Pedal

Change of power switch mode (Arrow ""

means 1 press of power switch)

Released

OFF ON (ACC) ON (IG) OFF

(Repeated)

Depressed

OFF Hybrid system starts

Depressed

ON (ACC) Hybrid system starts

Depressed

ON (IG) Hybrid system starts

Depressed

Hybrid system operating OFF

Released

Hybrid system operating OFF

Any position other than P

Released

ON (ACC) ON (IG)

Any position other than P

Depressed

ON (ACC) ON (IG)

Any position other than P

Released

ON (IG) OFF after shift position switched to

P (shift-linked OFF function)

Any position other than P

Released

Hybrid system operating OFF after shift

position switched to P (auto P control
function)

Any position other than P

Depressed

Hybrid system operating OFF after shift

position switched to P (auto P control
function)

(b) Check if power switch mode changes without

pressing the power switch.
(1) With power switch mode ON (ACC) and the
shift position in P, pull out the key. Check that
power switch mode changes from ON (ACC) to
OFF automatically.
(2) With power switch mode ON (ACC) and the
shift position in P, wait for at least 1 hour. Check
that power switch mode changes from ON
(ACC) to OFF automatically.
2.

CHECK KEY INTERLOCK FUNCTION

(a) Insert the key into key slot, and change power
switch modes and shift position according to the
table below. Check whether or not the key is locked
in the key slot.

Power Switch Mode

Shift Position

Key Status

OFF

Not locked in

OFF

Any position except P

ON (ACC)

Not locked in

ON (ACC)

Any position except P

Locked in

ON (IG)

Locked in

ON (IG)

Any position except P

Locked in

ST

ST24

1NZ-FXE STARTING SMART KEY SYSTEM

Power Switch Mode

Shift Position

Key Status

READY (hybrid system ON)

Locked in

READY (hybrid system ON)

Any position except P

Locked in

3.
Indicator

Power Switch
B080592E01

ST

CHECK INDICATOR CONDITION

(a) Check the power indicator on the power switch.
(1) Check that the power indicator illuminates and
changes its color according to the table below.

Power Switch Mode

Indicator Status

OFF

OFF

ON (ACC)

Green illumination

ON (IG)

Amber illumination

Hybrid System ON

OFF

Push button start system malfunctioning

Flashes continuously in amber

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2271

ST25

Ignition Hold Monitor Malfunction

DESCRIPTION
This DTC is output when the IG output circuits inside the power source control ECU are open or short.
DTC No.

DTC Detection Condition

Trouble Area

B2271

Hold circuit, IG1 relay actuation circuit or IG2

relay actuation circuit inside power source
control ECU is open or short

Power source control ECU

AM1 fuse
AM2 fuse
Wire harness

WIRING DIAGRAM

Power Source Control ECU

AM1

from
Battery

AM1

ST

AM2

from
Battery

AM2

B128115E01

INSPECTION PROCEDURE

CHECK FOR DTC

(a) Delete the DTC (see page ST-15).
(b) Check for DTCs again.
OK:
No DTC is output.
OK

END

NG

INSPECT FUSE (AM1, AM2)

(a) Remove the AM1 fuse from the driver side junction
block.

ST26

1NZ-FXE STARTING SMART KEY SYSTEM

(b) Remove the AM2 fuse from the engine room junction
block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1
NG

REPLACE FUSE

OK

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY)

(a) Disconnect the P6 ECU connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage

Wire Harness Side

Power Source Control ECU
P6

AM2

Tester Connection

Specified Condition

P6-33 (AM1) - Body ground

10 to 14 V

P6-12 (AM2) - Body ground

10 to 14 V

NG
AM1

B079748E03

OK

ST

REPLACE POWER SOURCE CONTROL ECU

REPAIR OR REPLACE HARNESS AND

CONNECTOR

ST27

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2272

Ignition 1 Monitor Malfunction

DESCRIPTION
This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG1 relay
actuation circuit inside the power source control ECU to the IG1 relay.
DTC No.

DTC Detection Condition

Trouble Area

B2272

IG1 relay actuation circuit inside power

source control ECU or other related circuit is
malfunctioning

Power source control ECU

IG1 relay
Wire harness

WIRING DIAGRAM

Power Source Control ECU

Driver Side Junction Block

to
Center Connector

IG1

from
Battery

GAUGE

IG1D

ST

B135511E01

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (IG1 RELAY)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.
(c) Select the items below in the DATA LIST and read the
displays on the intelligent tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

IG1 RELAY MON 1

IG1 outer relay monitor /

ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

OK:
ON (power switch ON (IG)) appears on the screen.

ST28

1NZ-FXE STARTING SMART KEY SYSTEM

OK

REPLACE POWER SOURCE CONTROL ECU

NG

INSPECT IG1 RELAY

(a) Remove the IG1 relay from the driver side junction block.
(b) Measure the resistance of the relay.
Standard resistance

B112776E02

OK

ST

Tester Connection

Specified Condition

3-5

10 k or higher

3-5

Below 1
(when battery voltage is applied to
terminals 1 and 2)

NG

REPLACE IG1 RELAY

ST29

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK WIRE HARNESS (DRIVER SIDE JUNCTION BLOCK - ECU AND BODY GROUND)

Wire Harness Side

Power Source Control ECU

P6

(a) Disconnect the 1J and 1E driver side junction block

connectors.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
Tester Connection

IG1D

Driver Side Junction Block

Specified Condition

1J-3 - P6-34 (IG1D)

Below 1

1J-3 or P6-34 (IG1D) - Body ground

10 k or higher

1E-17 - Body ground

Below 1

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

1E

ST
Driver Side Junction Block

1J

B128121E01

OK

ST30

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK DRIVER SIDE JUNCTION BLOCK

(a) Remove the IG1 relay from the driver side junction block.
(b) Disconnect the 1J and 1E driver side junction block
connectors.
(c) Measure the resistance of the driver side junction block.
Standard resistance

Driver Side Junction Block

1E

Tester Connection

Specified Condition

1J-3 - Driver side junction block IG1

relay terminal 2

Below 1

1E-17 - Driver side junction block IG1

relay terminal 1

Below 1

NG
Driver Side Junction Block

1J

IG1 Relay

ST

B135432E01

OK
REPLACE POWER SOURCE CONTROL ECU

REPLACE DRIVER SIDE JUNCTION BLOCK

ASSEMBLY

ST31

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2273

Ignition 2 Monitor Malfunction

DESCRIPTION
This DTC is output when a malfunction is occurring in the IG output circuit, which is from the IG2 relay
actuation circuit inside the power source control ECU to the IG2 relay.
DTC No.

DTC Detection Condition

Trouble Area

B2273

IG2 relay actuation circuit inside power

source control ECU or other related circuit is
malfunctioning

Power source control ECU

Wire harness

WIRING DIAGRAM

Engine Room Junction Block

to
Battery ECU

Power Source Control ECU

from
Battery

IG2
AM2

IG2D

ST

B135510E01

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (IG2 RELAY)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.
(c) Read the DATA LIST according to the displays on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

IG2 RELAY MON 2

IG2 inner relay monitor /

ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

OK:
ON (power switch ON (IG)) appears on the screen.

ST32

1NZ-FXE STARTING SMART KEY SYSTEM

OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECU AND BODY GROUND)
(a) Disconnect the 3I junction block connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side

Engine Room Junction Block

3I

Tester Connection

Specified Condition

3I-2 - P6-35 (IG2D)

Below 1

3I-3 - Body ground

Below 1

NG
Power Source Control ECU

REPAIR OR REPLACE HARNESS AND

CONNECTOR

P6

IG2D

ST

B080046E01

OK

CHECK ENGINE ROOM RELAY BLOCK

(a) Disconnect the 3I and 3K junction block connectors.
(b) Measure the resistance of the junction block connectors.
Standard resistance

Engine Room Junction Block

3I

Tester Connection

Condition

Specified Condition

3K-1 - 3I-4

When battery voltage is

not applied to terminals
3I-2 and 3I-3

10 k or higher

3K-1 - 3I-4

When battery voltage is

applied to terminals 3I-2
and 3I-3

Below 1

3K

B080053E01

NG
OK
REPLACE POWER SOURCE CONTROL ECU

REPLACE ENGINE ROOM RELAY BLOCK

ST33

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2274

ACC Monitor Malfunction

DESCRIPTION
This DTC is output when a malfunction is occurring in the ACC output circuit, which is from the ACC relay
actuation circuit inside the power source control ECU to the ACC relay.
DTC No.

DTC Detection Condition

Trouble Area

B2274

ACC relay actuation circuit inside power

source control ECU or other related circuit is
malfunctioning

Power source control ECU

ACC relay
Wire harness

WIRING DIAGRAM

Power Source Control ECU

to
Transponder Key ECU

from
Battery

ACC

ACCD

ST

B128110E01

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (ACC RELAY)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.
(c) Read the DATA LIST according to the displays on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

ACC RELAY MON

ACC relay monitor /

ON or OFF

ON: Power switch ON (ACC)

OFF: Power switch OFF

OK:
ON (power switch ON (ACC)) appears on the
screen.

ST34

1NZ-FXE STARTING SMART KEY SYSTEM

OK

REPLACE POWER SOURCE CONTROL ECU

NG

INSPECT ACC RELAY

(a) Remove the ACC relay.
(b) Measure the resistance of the relay.
Standard resistance
2
5

Tester Connection

Specified Condition

3-5

10 k or higher

3-5

Below 1
(when battery voltage is applied to
terminals 1 and 2)

3
B060778E74

NG

REPLACE ACC RELAY

OK

CHECK WIRE HARNESS (ACC RELAY - POWER SOURCE CONTROL ECU AND BODY
GROUND)
(a) Remove the ACC relay.
(b) Disconnect the P6 connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side

ST

ACC Relay

A12

Tester Connection

Specified Condition

A12-1 - P6-11 (ACCD)

Below 1

A12-2 - Body ground

Below 1

A12-1 or P6-11 (ACCD) - Body

ground

10 k or higher

NG
Power Source Control ECU

P6
ACCD
)

B128118E01

OK
REPLACE POWER SOURCE CONTROL ECU

REPAIR OR REPLACE HARNESS AND

CONNECTOR

ST35

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2275

STSW Monitor Malfunction

DESCRIPTION
This DTC is output when the ST output circuits inside the power source control ECU is open or short.
DTC No.

DTC Detection Condition

Trouble Area

B2275

ST output circuit inside power source control

ECU or other related circuit is malfunctioning

Power source control ECU

Hybrid vehicle control ECU
Wire harness

WIRING DIAGRAM

Power Source Control ECU

Hybrid Vehicle Control ECU

STSW

ST2

ST

B128114E01

INSPECTION PROCEDURE

CHECK FOR DTC

(a) Delete the DTC (see page ST-15).
(b) Check for DTCs again.
OK:
No DTC is output.
OK

NG

END

ST36

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HYBRID VEHICLE

CONTROL ECU)

Wire Harness Side

Power Source Control ECU

(a) Disconnect the P6 and H14 ECU connectors.

(b) Measure the resistance of the wire harness side
connectors.
Standard resistance
Tester Connection

P6

Specified Condition

P6-39 (STSW) - H14-5 (ST2)

Below 1

P6-39 (STSW) or H14-5 (ST2) - Body

ground

10 k or higher

STSW

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

Hybrid Vehicle Control ECU

ST2
H14

ST

B128123E01

OK

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing the power source control ECU with a
normally functioning ECU, check that the hybrid control
system can start normally.
OK:
Hybrid control system can start normally.
NG

GO TO HYBRID CONTROL SYSTEM

OK
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2277

ST37

Detecting Vehicle Submersion

DESCRIPTION
This DTC is output when the submersion circuit monitor inside the power source control ECU detects that
the vehicle is submerged in water.
DTC No.

DTC Detection Condition

Trouble Area

B2277

Submersion circuit monitor inside power

source control ECU detects that vehicle is
submerged in water

Power source control ECU

INSPECTION PROCEDURE

CHECK FOR DTC

(a) Delete the DTC (see page ST-15).
(b) Check for DTCs again.
OK:
No DTC is output.
NG

REPLACE POWER SOURCE CONTROL ECU

OK
END

ST

ST38

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2278

Engine Switch Circuit Malfunction

DESCRIPTION
This DTC is output when 1) a malfunction is detected between the power source control ECU and the
power switch; or 2) either of the switches inside the power switch is malfunctioning.
DTC No.

DTC Detection Condition

Trouble Area

B2278

Communication is abnormal between power

source control ECU and power switch; or
power switch is defective

Power source control ECU

Power switch
Wire harness

WIRING DIAGRAM

Power Source Control ECU

Power Switch

SS2

ST

SSW2

SS1

SSW1

GND

B128111E01

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (START SWITCH 1 and 2)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.

ST39

1NZ-FXE STARTING SMART KEY SYSTEM

(c) Read the DATA LIST according to the displays on the

tester.
Power source control ECU
Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

ST SW1

Start Switch 1 /
ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

ST SW2

Start Switch 2 /
ON or OFF

ON: Power switch ON (IG)

OFF: Power switch OFF

OK:
ON (power switches 1 and 2 are ON (IG)) appears
on the screen
OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU AND
BODY GROUND)
(a) Disconnect the P11 power switch connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side

Power Source Control ECU

SSW1
P6
SSW2

Tester Connection

Specified Condition

P11-5 (SS1) - P6-14 (SSW1)

Below 1

P11-7 (SS2) - P6-37 (SSW2)

Below 1

P11-6 - Body ground

Below 1

P11-5 (SS2) or P6-14 (SSW1) - Body

ground

10 k or higher

P11-7 (SS2) or P6-37 (SSW2) - Body

ground

10 k or higher

Power Switch

NG
P11

SS1

SS2
B128120E01

OK

REPAIR OR REPLACE HARNESS AND

CONNECTOR

ST

ST40

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECT POWER SWITCH

(a) Remove the power switch.
(b) Measure the resistance of the switch.
Standard resistance
Tester Connection

Switch Condition

Specified Condition

7 (SS2) - 6 (GND)

Pushed

Below 1

5 (SS1) - 6 (GND)

Pushed

Below 1

7 (SS2) - 6 (GND)

Released

10 k or higher

5 (SS1) - 6 (GND)

Released

10 k or higher

B080048E03

NG
OK
REPLACE POWER SOURCE CONTROL ECU

ST

REPLACE POWER SWITCH

ST41

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2281

"P" Signal Malfunction

DESCRIPTION
The power source control ECU and the transmission control ECU are connected by a cable and the
BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.
DTC No.

DTC Detection Condition

Trouble Area

B2281

Cable and BEAN between power source

control ECU and transmission control ECU
are inconsistent

Power source control ECU

Transmission control ECU
Wire harness

WIRING DIAGRAM

Transmission Control ECU

Power Source Control ECU

ST

PPOS

B128114E02

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (SHIFT P SIGNAL)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.
(c) Read the DATA LIST according to the displays on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

SHIFT P SIG

Shift P Signal /
ON or OFF

ON: Shift P signal ON (Shift

position is P)
OFF: Shift P signal OFF (Shift
position is not P)

ST42

1NZ-FXE STARTING SMART KEY SYSTEM

OK:
"ON" (P signal is ON) appears on the screen.
OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - TRANSMISSION CONTROL

ECU)

Wire Harness Side

Power Source Control ECU
P
P6

(a) Disconnect the P6 and T4 ECU connectors.

(b) Measure the resistance of the wire harness side
connectors.
Standard resistance
Tester Connection

Specified Condition

P6-5 (P) - T4-8 (PPOS)

Below 1

P6-5 (P) or T4-8 (PPOS) - Body

ground

10 k or higher

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

Transmission Control ECU

ST

T4

PPOS
)

B128122E01

OK

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing the power source control ECU with a
normally functioning ECU, check that the hybrid control
system can start normally.
OK:
Hybrid control system can start normally.
NG

GO TO SHIFT CONTROL SYSTEM

OK
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

ST43

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2282

Vehicle Speed Signal Malfunction

DESCRIPTION
The power source control ECU and the combination meter are connected by a cable and the BEAN. This
DTC is output when: 1) the cable information and BEAN information are inconsistent; and 2) a malfunction
is detected between the vehicle speed sensor and combination meter.
DTC No.

DTC Detection Condition

Trouble Area

B2282

Both conditions below are met:

Cable for BEAN information between
power source control ECU and
combination meter are inconsistent
Malfunction is detected between vehicle
speed sensor and combination meter

Power source control ECU

Combination meter
Wire harness

WIRING DIAGRAM

Combination Meter

Power Source Control ECU

ST
Joining Connector
SPD

IG2

B128130E01

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (VEHICLE SPEED SIGNAL)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.
(c) Read the DATA LIST according to the displays on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

VEHICLE SPD SIG

Vehicle speed signal /

Stop or Run

Stop: Vehicle is stopped

Run: Vehicle is running

ST44

1NZ-FXE STARTING SMART KEY SYSTEM

OK:
STOP (vehicle is stopped) appears on the screen.
OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - IG2 JOINING CONNECTOR)
(a) Disconnect the P6 connector.
(b) Disconnect the IG2 connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side

Joining Connector

IG2

Tester Connection

Specified Condition

P6-19 (SPD) - IG2-16

Below 1

P6-19 (SPD) or IG2-16 - Body ground

10 k or higher

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

Power Source Control ECU

P6

ST

SPD
B081038E01

OK

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing the power source control ECU with a
normally functioning ECU, check that the hybrid control
system can start normally.
OK:
Hybrid control system can start normally.
NG

GO TO METER / GAUGE SYSTEM

OK
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

ST45

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2284

Brake Signal Malfunction

DESCRIPTION
This DTC is output when: 1) the brake signal circuit between the power source control ECU and the stop
light switch is malfunctioning, and 2) the BEAN information is inconsistent.
DTC No.

DTC Detection Condition

Trouble Area

B2284

Communication or communication line is

abnormal between power source control ECU
and stop light switch

Power source control ECU

Stop light switch
Wire harness

WIRING DIAGRAM

Power Source Control ECU

Stop Light Switch
to
Hybrid Vehicle
Control ECU

from
Battery

ST

STOP
STP
from
Battery

B128109E01

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (STOP LIGHT SWITCH)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.

ST46

1NZ-FXE STARTING SMART KEY SYSTEM

(c) Read the DATA LIST according to the displays on the

tester.
Power source control ECU
Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

STOP LAMP SW1

Stop light switch 1 /

ON or OFF

ON: Brake pedal depressed

OFF: Brake pedal released

OK:
ON (brake pedal depressed) appears on the
screen.
OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (STOP LIGHT SWITCH - POWER SOURCE CONTROL ECU AND
BATTERY)
(a) Disconnect the S16 switch connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance and voltage of the wire harness
side connectors.
Standard resistance

Wire Harness Side

Stop Light Switch

S16

Tester Connection

Specified Condition

S16-1 - P6-1 (STP)

Below 1

Standard voltage

ST

Tester Connection

Specified Condition

S16-2 - Body ground

10 to 14 V

Power Source Control ECU

NG
STP

P6

REPAIR OR REPLACE HARNESS AND

CONNECTOR

B080047E01

OK

INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Remove the stop light switch.

ST47

1NZ-FXE STARTING SMART KEY SYSTEM

S16

Not Pushed

Pushed

E130045E01

(b) Measure the resistance according to the value(s) in the

table below.
Standard resistance
Tester Connection

Condition

Specified Condition

1-2

Switch pin not pushed

Below 1

3-4

Switch pin not pushed

10 k or higher

1-2

Switch pin pushed

10 k or higher

3-4

Switch pin pushed

Below 1

NG

REPLACE STOP LIGHT SWITCH ASSEMBLY

OK
REPLACE POWER SOURCE CONTROL ECU

ST

ST48

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2286

Ready Signal Malfunction

DESCRIPTION
The power source control ECU and the hybrid vehicle control ECU are connected by a cable and the
BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.
DTC No.

DTC Detection Condition

Trouble Area

B2286

Cable and BEAN information between power

source control ECU and hybrid vehicle control
ECU are inconsistent

Power source control ECU

Hybrid vehicle control ECU
Wire harness

WIRING DIAGRAM

Power Source Control ECU

Hybrid Vehicle Control ECU

ST

RDY

RDY

B128114E04

INSPECTION PROCEDURE

READ VALUE OF DATA LIST (READY SIGNAL)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and press the intelligent
tester main switch ON.
(c) Read the DATA LIST according to the displays on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

READY SIG

Ready signal /
ON or OFF

ON: Power switch ON (READY)

OFF: Power switch OFF or ON
(IG) or ON (ACC)

ST49

1NZ-FXE STARTING SMART KEY SYSTEM

OK:
ON (power switch is ON (READY)) appears on the
screen.
OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HYBRID VEHICLE

CONTROL ECU)

Wire Harness Side

Power Source Control ECU

P6
RDY

(a) Disconnect the P6 and H14 ECU connectors.

(b) Measure the resistance of the wire harness side
connectors.
Standard resistance
Tester Connection

Specified Condition

P6-22 (RDY) - H14-28 (RDY)

Below 1

P6-22 (RDY) or H14-28 (RDY) - Body

ground

10 k or higher

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

Hybrid Vehicle Control ECU

ST

H14

RDY

B128123E02

OK

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing the power source control ECU with a
normally functioning ECU, check that the hybrid vehicle
control system can start normally.
OK:
Hybrid vehicle control system can start normally.
NG

GO TO HYBRID CONTROL SYSTEM

OK
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

ST50

1NZ-FXE STARTING SMART KEY SYSTEM

DTC

B2287

LIN Communication Master Malfunction

DTC

B2289

Key Collation Waiting Time Over

DESCRIPTION
This DTC is output when: 1) any other DTC is set in the power source control ECU; or 2) the wire harness
between the power source control ECU and the transponder key ECU is open or short.
DTC No.

DTC Detection Condition

Trouble Area

B2287

Communication or communication line is

abnormal between power source control ECU
and transponder key ECU

Power source control ECU

Transponder key ECU
Wire harness

B2289

Either condition below is met:

Cable and BEAN are abnormal between
power source control ECU and
immobiliser system
Immobiliser system is malfunctioning

Power source control ECU

Engine immobiliser system
Wire harness

WIRING DIAGRAM

Transponder Key ECU

Power Source Control ECU

ST

LIN1

LIN1

B128114E05

ST51

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECTION PROCEDURE

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - TRANSPONDER KEY ECU)

Wire Harness Side

Power Source Control ECU

P6

LIN1

(a) Disconnect the P6 and T5 ECU connectors.

(b) Measure the resistance of the wire harness side
connectors.
Standard resistance
Tester Connection

Specified Condition

P6-30 (LIN1) - T5-14 (LIN1)

Below 1

P6-30 (LIN1) or T5-14 (LIN1) - Body

ground

10 k or higher

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

Transponder Key ECU

T5

LIN1
)

B128122E02

ST

OK

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing power source control ECU with a
normally functioning ECU, check that the hybrid control
system can start normally.

Result
Result

Proceed to

Hybrid system can start normally

Hybrid system cannot start (w/ smart key system (for door lock))

Hybrid system cannot start (w/o smart key system (for door lock))

GO TO ENGINE IMMOBILISER SYSTEM (w/

SMART KEY SYSTEM)

GO TO ENGINE IMMOBILISER SYSTEM (w/o

SMART KEY SYSTEM)

A
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

ST52

1NZ-FXE STARTING SMART KEY SYSTEM

Power Mode does not Change to ON (IG and ACC)

DESCRIPTION
When the key is inserted into the key slot and the power switch is pressed, signals are input to the power
source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is
performed by pressing and releasing the power switch until the desired power mode is selected (the
power modes cycle in the order shown above).

ST

ST53

1NZ-FXE STARTING SMART KEY SYSTEM

WIRING DIAGRAM

Power Source Control ECU

from
Battery

AM1

from
Battery

AM2

AM1

AM2

Power Switch

SS2

SSW2

SS1

SSW1

GND

ST

GND2

COM

Key Slot

KSW2

CDSW

B121307E01

ST54

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECTION PROCEDURE

INSPECT FUSE (AM1, AM2)

(a) Remove the AM1 fuse from the driver side junction
block.
(b) Remove the AM2 fuse from the engine room junction
block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1
NG

REPLACE FUSE

OK

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY
GROUND)
(a) Disconnect the P6 ECU connector.
(b) Measure the resistance and voltage of the wire harness
side connector.
Standard resistance

Wire Harness Side

Power Source Control ECU
GND2

P6

AM2

ST

Tester Connection

Specified Condition

P6-6 (GND2) - Body ground

Below 1

Standard voltage
AM1

B079748E04

Tester Connection

Specified Condition

P6-33 (AM1) - Body ground

10 to 14 V

P6-12 (AM2) - Body ground

10 to 14 V

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

OK

CHECK FOR DTC (POWER SOURCE CONTROL ECU)

(a) Check for DTCs of the power source control ECU.
OK:
DTCs of the power source control ECU are not
output.
NG

OK

GO TO DTC CHART

ST55

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK FOR DTC (TRANSPONDER KEY ECU)

(a) Check for DTCs of the transponder key ECU.

Result
Result

Proceed to

DTCs of transponder key ECU are not output

DTCs of transponder key ECU are output (w/ smart key system (for
door lock))

DTCs of transponder key ECU are output (w/o smart key system (for
door lock))

GO TO ENGINE IMMOBILISER SYSTEM (w/

SMART KEY SYSTEM)

GO TO ENGINE IMMOBILISER SYSTEM (w/o

SMART KEY SYSTEM)

READ VALUE OF DATA LIST (STEERING UNLOCK SWITCH)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Press the intelligent tester main switch ON.
(c) Read the DATA LIST according to the displays on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

STR UNLK SW

Steering unlock switch /

ON or OFF

ON: Key is in key slot

OFF: No key is in key slot

OK:
ON (key is in key slot) appears on the screen.
OK
NG

Go to step 8

ST

ST56

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK WIRE HARNESS (KEY SLOT - POWER SOURCE CONTROL ECU AND BODY
GROUND)

Wire Harness Side

Power Source Control ECU

P6
CDSW

(a) Disconnect the K2 key slot connector.

(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance
Tester Connection

Specified Condition

K2-3 (KSW2) - P6-25 (CDSW)

Below 1

K2-2 (COM) - Body ground

Below 1

K2-3 (KSW2) or P6-25 (CDSW) - Body

ground

10 k or higher

NG
Key Slot

REPAIR OR REPLACE HARNESS AND

CONNECTOR

K2

COM

KSW2

ST

B128119E01

OK

INSPECT KEY SLOT

(a) Remove the key slot.
(b) Measure the resistance of the key slot.
Standard resistance
Tester Connection

Condition

Specified Condition

K2-3 (KSW2) - K2-2

(COM)

Key is in key slot

10 k or higher

NG

REPLACE KEY SLOT

B080048E04

OK
REPLACE POWER SOURCE CONTROL ECU

READ VALUE OF DATA LIST (START SWITCH 1 and 2)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Press the intelligent tester main switch ON.

ST57

1NZ-FXE STARTING SMART KEY SYSTEM

(c) Read the DATA LIST according to the displays on the

tester.
Power source control ECU
Item

Measurement Item / Display

(Range)

Normal Condition

Diagnostic Note

ST SW1

Start switch 1 /
ON or OFF

ON: Power switch ON (IG) (push

power switch)
OFF: Power switch OFF (release
power switch)

ST SW2

Start switch 2 /
ON or OFF

ON: Power switch ON (IG) (push

power switch)
OFF: Power switch OFF (release
power switch)

OK:
"ON" (power switch ON (IG)) appears on the
screen.
OK

REPLACE POWER SOURCE CONTROL ECU

NG

CHECK WIRE HARNESS (POWER SWITCH - POWER SOURCE CONTROL ECU AND
BODY GROUND)
(a) Disconnect the P11 power switch connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.

Wire Harness Side

Power Source Control ECU

SSW1
P6
SSW2

P11

SS1

GND

SS2
B128120E02

OK

Specified Condition

5 (SS1) - 14 (SSW1)

Below 1

7 (SS2) - 37 (SSW2)

Below 1

6 (GND) - Body ground

Below 1

5 (SS1) or 14 (SSW1) - Body ground

10 k or higher

7 (SS2) or 37 (SSW2) - Body ground

10 k or higher

NG

Power Switch

Tester Connection

REPAIR OR REPLACE HARNESS AND

CONNECTOR

ST

ST58

10

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECT POWER SWITCH

(a) Remove the power switch.
(b) Measure the resistance of the switch.
Standard resistance
Tester Connection

Switch Condition

Specified Condition

7 (SS2) - 6 (GND)

Pushed

Below 1

5 (SS1) - 6 (GND)

Pushed

Below 1

7 (SS2) - 6 (GND)

Released

10 k or higher

5 (SS1) - -6 (GND)

Released

10 k or higher

B080048E02

NG
OK
REPLACE POWER SOURCE CONTROL ECU

ST

REPLACE POWER SWITCH

1NZ-FXE STARTING SMART KEY SYSTEM

ST59

Power Mode does not Change to ON (IG)

DESCRIPTION
When the key is inserted into the key slot and the power switch is pressed, signals are input to the power
source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is
performed by pressing and releasing the power switch until the desired power mode is selected (the
power modes cycle in the order shown above).

ST

ST60

1NZ-FXE STARTING SMART KEY SYSTEM

WIRING DIAGRAM

Power Source Control ECU

IG1D
AM1

from
Battery

AM1

IG1
Driver Side Junction Block

GAUGE

ST
to
Combination Meter

AM2

from
Battery

AM2
Engine Room
Junction Block

IG2D

IG2
Driver Side Junction Block

GND2
to
Battery ECU

IGN

B135509E01

ST61

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECTION PROCEDURE

INSPECT FUSE (AM1, AM2)

(a) Remove the AM1 fuse from the driver side junction
block.
(b) Remove the AM2 fuse from the engine room junction
block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1
NG

REPLACE FUSE

OK

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY
GROUND)
(a) Disconnect the P6 ECU connector.
(b) Measure the resistance and voltage of the wire harness
side connector.
Standard resistance

Wire Harness Side

Power Source Control ECU
GND2

P6

AM2

Tester Connection

Specified Condition

P6-6 (GND2) - Body ground

Below 1

ST

Standard voltage
AM1

Tester Connection
B079748E04

Specified Condition

P6-33 (AM1) - Body ground

10 to 14 V

P6-12 (AM2) - Body ground

10 to 14 V

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

OK

CHECK FOR DTC

(a) Check for DTCs of the power source control ECU.
OK:
DTCs of the power source control ECU are not
output.
NG

OK

GO TO DTC CHART

ST62

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECT IG1 RELAY

(a) Remove the IG1 relay from the driver side junction block.
(b) Measure the resistance of the relay.
Standard resistance

B112776E02

Tester Connection

Specified Condition

3-5

10 k or higher

3-5

Below 1
(when battery voltage is applied to
terminals 1 and 2)

NG

REPLACE IG1 RELAY

OK

CHECK WIRE HARNESS (DRIVER SIDE JUNCTION BLOCK - ECU AND BODY GROUND)

Wire Harness Side

Power Source Control ECU

P6

ST

IG1D

1E

Driver Side Junction Block

1J
B128121E01

OK

Tester Connection

Specified Condition

1J-3 - P6-34 (IG1D)

Below 1

1E-17 - Body ground

Below 1

1J-3 or P6-34 (IG1D) - Body ground

10 k or higher

NG

Driver Side Junction Block

(a) Disconnect the 1J and 1E junction block connectors.

(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

REPAIR OR REPLACE HARNESS AND

CONNECTOR

ST63

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECT DRIVER SIDE JUNCTION BLOCK

(a) Disconnect the 1J and 1E junction block connectors.
(b) Remove the IG1 relay from the driver side junction block.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Driver Side Junction Block

1E

Tester Connection

Specified Condition

1J-3 - Driver side junction block IG1

relay terminal 2

Below 1

1E-17 - Driver side junction block IG1

relay terminal 1

Below 1

NG
Driver Side Junction Block

REPLACE DRIVER SIDE JUNCTION BLOCK

ASSEMBLY

1J

IG1 Relay

ST

B135432E01

OK

ST64

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK WIRE HARNESS (ENGINE ROOM JUNCTION BLOCK - ECU AND BODY GROUND)
(a) Disconnect the 3I junction block connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side

Engine Room Junction Block

3I

Tester Connection

Specified Condition

3I-2 - P6-35 (IG2D)

Below 1

3I-3 - Body ground

Below 1

3I-2 or P6-35 (IG2D) - Body ground

10 k or higher

NG

Power Source Control ECU

REPAIR OR REPLACE HARNESS AND

CONNECTOR

P6

IG2D
B080046E01

OK

ST
8

CHECK POWER SOURCE CONTROL ECU (IG1D, IG2D VOLTAGE)

(a) Measure the voltage of the connector.
Standard voltage
Power Source Control ECU

IG2D

IG1D

B135413E01

Tester Connection

Condition

Specified Condition

P6-34 (IG1D) - Body

ground

Power switch ON (ACC)

Below 1 V

P6-35 (IG2D) - Body

ground

Power switch ON (ACC)

Below 1 V

P6-34 (IG1D) - Body

ground

Power switch ON (IG)

10 to 14 V

P6-35 (IG2D) - Body

ground

Power switch ON (IG)

10 to 14 V

NG
OK

REPLACE POWER SOURCE CONTROL ECU

ST65

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK ENGINE ROOM RELAY BLOCK

(a) Measure the voltage of the connector.
Standard voltage
Engine Room Junction Block

3I

Tester Connection

Condition

Specified Condition

3I-4 - Body ground

Power switch ON (IG)

10 to 14 V

NG

REPLACE ENGINE ROOM RELAY BLOCK

B135414E01

OK

10

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing the power source control ECU with a
normally functioning ECU, check that the power switch
can be set to ON (IG).

Result
Result

Proceed to

Power switch can be set to ON (IG)

Power switch cannot be set to ON (IG) (w/ smart key system (for door
lock))

Power switch cannot be set to ON (IG) (w/o smart key system (for
door lock))

ST

GO TO ENGINE IMMOBILISER SYSTEM (w/

SMART KEY SYSTEM)

GO TO ENGINE IMMOBILISER SYSTEM (w/o

SMART KEY SYSTEM)

A
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

ST66

1NZ-FXE STARTING SMART KEY SYSTEM

Power Mode does not Change to ON (ACC)

DESCRIPTION
When the key is inserted into the key slot and the power switch is pressed, signals are input to the power
source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is
performed by pressing and releasing the power switch until the desired power mode is selected (the
power modes cycle in the order shown above).

ST

ST67

1NZ-FXE STARTING SMART KEY SYSTEM

WIRING DIAGRAM

Power Source Control ECU

AM2

from
Battery

AM2

ACC

ACCD
ACC-B

ST
ACC

AM1
AM1

to
Transponder
Key ECU

from
Battery
GND2

B121305E01

ST68

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECTION PROCEDURE

INSPECT FUSE (AM1, AM2)

(a) Remove the AM1 fuse from the driver side junction
block.
(b) Remove the AM2 fuse from the engine room junction
block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1
NG

REPLACE FUSE

OK

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY
GROUND)
(a) Disconnect the P6 ECU connector.
(b) Measure the resistance and voltage of the wire harness
side connector.
Standard resistance

Wire Harness Side

Power Source Control ECU
GND2

P6

AM2

ST

Tester Connection

Specified Condition

P6-6 (GND2) - Body ground

Below 1

Standard voltage
AM1

B079748E04

Tester Connection

Specified Condition

P6-33 (AM1) - Body ground

10 to 14 V

P6-12 (AM2) - Body ground

10 to 14 V

NG

REPAIR OR REPLACE HARNESS AND

CONNECTOR

OK

CHECK FOR DTC

(a) Check for DTCs of the power source control ECU.
OK:
DTCs of the power source control ECU are not
output.
NG

OK

GO TO DTC CHART

ST69

1NZ-FXE STARTING SMART KEY SYSTEM

INSPECT ACC RELAY

(a) Remove the ACC relay.
(b) Measure the resistance of the relay.
Standard resistance
2
5

Tester Connection

Specified Condition

3-5

10 k or higher

3-5

Below 1
(when battery voltage is applied to
terminals 1 and 2)

3
B060778E74

NG

REPLACE ACC RELAY

OK

CHECK WIRE HARNESS (ACC RELAY - POWER SOURCE CONTROL ECU AND BODY
GROUND)
(a) Remove the ACC relay.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance of the wire harness side
connectors.
Standard resistance

Wire Harness Side

ACC Relay

A12

Tester Connection

Specified Condition

A12-1 - P6-11 (ACCD)

Below 1

A12-2 - Body ground

Below 1

A12-1 - Body ground

10 k or higher

NG
Power Source Control ECU

P6
ACCD
)

B128118E02

OK

REPAIR OR REPLACE HARNESS AND

CONNECTOR

ST

ST70

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK POWER SOURCE CONTROL ECU (ACCD VOLTAGE)

(a) Measure the voltage of the connector.
Standard voltage
Power Source Control ECU

Tester Connection

Condition

Specified Condition

P6-11 (ACCD) - Body

ground

Power switch ON (ACC)

10 to 14 V

P6-11 (ACCD) - Body

ground

Power switch OFF

Below 1 V

NG

ACCD

REPLACE POWER SOURCE CONTROL ECU

B135413E02

OK

CHECK OPERATION OF POWER SOURCE CONTROL ECU

(a) After replacing the power source control ECU with a
normally functioning ECU, check that the power switch
can be set to ON (ACC).

Result

ST

Result

Proceed to

Power switch can be set to ON (ACC)

Power switch cannot be set to ON (ACC) (w/ smart key system (for
door lock))

Power switch cannot be set to ON (ACC) (w/o smart key system (for
door lock))

GO TO ENGINE IMMOBILISER SYSTEM (w/

SMART KEY SYSTEM)

GO TO ENGINE IMMOBILISER SYSTEM (w/o

SMART KEY SYSTEM)

A
NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)

ST71

1NZ-FXE STARTING SMART KEY SYSTEM

Power Mode does not Change to ON (Ready)

DESCRIPTION
When the key is inserted into the key slot and the power switch is pressed, signals are input to the power
source control ECU. Selection of the power mode, which cycles between OFF, ON (ACC) and ON (IG), is
performed by pressing and releasing the power switch until the desired power mode is selected (the
power modes cycle in the order shown above). When the shift position is P, the brake pedal is depressed
and held and the power switch is pressed, the power switch mode changes to ON (READY), signifying
that the hybrid system has started operating.

WIRING DIAGRAM

Power Source Control ECU

Stop Light Switch
to
Hybrid Vehicle
Control ECU

from
Battery

ST
STOP
STP
from
Battery

B128109E01

INSPECTION PROCEDURE

BASIC INSPECTION
(a) Check that the P position switch is ON.
(b) Turn the power switch ON (READY) and check that the
hybrid control system starts normally. Make sure the
brake pedal is depressed at this time.
OK:
Hybrid control system starts normally (power
switch can be set to ON (READY)).
OK

END

ST72

1NZ-FXE STARTING SMART KEY SYSTEM

NG

CHECK OPERATION OF POWER SWITCH

(a) Check that the power mode can be changed by pushing
the power switch.
HINT:
With the power switch OFF, do not depress the brake
pedal and push the power switch repeatedly. The power
mode should change as follows:
ON (ACC), ON (IG), OFF.
With the power switch OFF, depress the brake pedal and
push the power switch repeatedly. The power mode
should change as follows:
ON (READY), OFF.
OK:
Power switch operates normally.
NG

OTHER PROBLEM

OK

CHECK FOR DTC

(a) Check for DTCs of the power source control ECU.
OK:
DTCs of the power source control ECU are not
output

ST

NG

GO TO DTC CHART

OK

READ VALUE OF DATA LIST (STOP LIGHT SWITCH 1 and 2)

(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the power switch ON (IG) and push the intelligent
tester main switch ON.
(c) Read the DATA LIST according to the display on the
tester.

Power source control ECU

Item

Measurement Item / Range

(Display)

Normal Condition

Diagnostic Note

STOP LAMP SW1

Stop light switch 1 /

ON or OFF

ON: Brake pedal depressed

OFF: Brake pedal released

STOP LAMP SW2

Stop light switch 2 /

ON or OFF

ON: Brake pedal depressed

OFF: Brake pedal released

OK:
ON (stop light switch ON) appears on the screen.
OK

Go to step 8

ST73

1NZ-FXE STARTING SMART KEY SYSTEM

NG

CHECK POWER SOURCE CONTROL ECU (STP VOLTAGE)

(a) Measure the voltage when the brake pedal is operated.
Standard voltage
Power Source Control ECU

P6

STP

Tester Connection

Condition

Specified Condition

P6-1 (STP) - Body

ground

Brake pedal released

10 to 14 V

P6-1 (STP) - Body

ground

Brake pedal depressed

Below 1 V

OK

REPLACE POWER SOURCE CONTROL ECU

B135413E03

NG

INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Remove the stop light switch.
S16

Not Pushed

ST

Pushed

E130045E01

(b) Measure the resistance according to the value(s) in the

table below.
Standard resistance
Tester Connection

Condition

Specified Condition

1-2

Switch pin not pushed

Below 1

3-4

Switch pin not pushed

10 k or higher

1-2

Switch pin pushed

10 k or higher

3-4

Switch pin pushed

Below 1

NG
OK

REPLACE STOP LIGHT SWITCH ASSEMBLY

ST74

1NZ-FXE STARTING SMART KEY SYSTEM

CHECK WIRE HARNESS (STOP LIGHT SWITCH - POWER SOURCE CONTROL ECU AND
BATTERY)
(a) Disconnect the S16 switch connector.
(b) Disconnect the P6 ECU connector.
(c) Measure the resistance and voltage of the wire harness
side connectors.
Standard resistance

Wire Harness Side

Stop Light Switch

Tester Connection

Specified Condition

S16-1 - P6-1 (STP)

Below 1

S16

Standard voltage
Tester Connection

Specified Condition

S16-2 - Body ground

10 to 14 V

Power Source Control ECU

NG
STP

P6

REPAIR OR REPLACE HARNESS AND

CONNECTOR

B080047E01

ST

OK
REPLACE POWER SOURCE CONTROL ECU

CHECK FOR DTC

(a) Check for DTCs of the hybrid vehicle control ECU.
OK:
DTCs of the hybrid vehicle control ECU are not
output
NG

OK
REPLACE POWER SOURCE CONTROL ECU

GO TO HYBRID CONTROL SYSTEM

ST70

1NZ-FXE STARTING POWER SWITCH

POWER SWITCH
1NZ-FXE STARTING
ENGINE

COMPONENTS

REAR NO. 3 FLOOR BOARD

REAR NO. 2 FLOOR BOARD

REAR DECK FLOOR BOX

ST

6.0 (61, 53 in.*lbf)

NEGATIVE BATTERY
CABLE

N*m (kgf*cm, ft.*lbf) : Specified torque

A124443E07

1NZ-FXE STARTING POWER SWITCH

ST71

POWER SWITCH

UPPER INSTRUMENT PANEL

FINISH PANEL SUB-ASSEMBLY

ST

LOWER INSTRUMENT PANEL

FINISH PANEL SUB-ASSEMBLY

HOOD LOCK CONTROL

CABLE ASSEMBLY
NO. 1 INSTRUMENT PANEL REGISTER ASSEMBLY
A127730E01

ST72

1NZ-FXE STARTING POWER SWITCH

ON-VEHICLE INSPECTION
1.

CHECK POWER SWITCH MODE CHANGE FUNCTION

(a) Check the function of the power switch.
(1) Check that power switch mode changes in
accordance with the conditions of the shift
position and brake pedal.
HINT:
For vehicles with the smart entry system, the
power switch functions not only when the key is
inserted into the key slot but also when the
driver carries the key.

Specified condition

ST

Shift Position

Brake Pedal

Change of power switch mode (Arrow "" means 1 press of power

switch)

Released

OFF ON (ACC) ON (IG) OFF (Repeated)

Depressed

OFF Hybrid system starts

Depressed

ON (ACC) Hybrid system starts

Depressed

ON (IG) Hybrid system starts

Depressed

Hybrid system operating OFF

Released

Hybrid system operating OFF

Any position other than P

Released

ON (ACC) ON (IG)

Any position other than P

Depressed

ON (ACC) ON (IG)

Any position other than P

Released

ON (IG) OFF after shift position switched to P (shift-linked OFF

function)

Any position other than P

Released

Hybrid system operating OFF after shift position switched to P

(auto P control function)

Any position other than P

Depressed

Hybrid system operating OFF after shift position switched to P

(auto P control function)

(b) Check if power switch mode changes without

pressing the power switch.
(1) With power switch mode ON (ACC) and the
shift position in P, pull out the key. Check that
power switch mode changes from ON (ACC) to
OFF automatically.
(2) With power switch mode ON (ACC) and the
shift position in P, wait for at least 1 hour. Check
that power switch mode changes from ON
(ACC) to OFF automatically.
2.

CHECK INTERLOCK FUNCTION

(a) Insert the key into the key slot, and change power
switch modes and shift position according to the
table below. Check whether or not the key is locked
in the key slot.

Specified condition
Power Switch Mode

Shift Position

Key Status

OFF

Not locked in

OFF

Any position except P

ON (ACC)

Not locked in

ON (ACC)

Any position except P

Locked in

ON (IG)

Locked in

ON (IG)

Any position except P

Locked in

READY (hybrid system ON)

Locked in

ST73

1NZ-FXE STARTING POWER SWITCH

Power Switch Mode

Shift Position

Key Status

READY (hybrid system ON)

Any position except P

Locked in

3.
Indicator

CHECK INDICATOR CONDITION

(a) Check the power indicator on the power switch.
(1) Check that the power indicator illuminates and
changes colors according to the table below.
Specified condition

Power Switch Mode

Power Switch

Indicator Status

OFF

OFF

ON (ACC)

Green illumination

ON (IG)

Amber illumination

Hybrid system ON

OFF

Push button start system

malfunctioning

Flashes continuously in amber

B080592E02

ST

ST74

1NZ-FXE STARTING POWER SWITCH

REMOVAL

ST

Push

1.

REMOVE REAR NO. 2 FLOOR BOARD (See page CH4)

2.

REMOVE REAR DECK FLOOR BOX (See page CH-4)

3.

REMOVE REAR NO. 3 FLOOR BOARD (See page CH4)

4.

DISCONNECT CABLE FROM NEGATIVE BATTERY

TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.

5.

REMOVE NO. 1 INSTRUMENT PANEL REGISTER

ASSEMBLY (See page IP-5)

6.

REMOVE LOWER INSTRUMENT PANEL FINISH

PANEL SUB-ASSEMBLY (See page IP-6)

7.

REMOVE UPPER INSTRUMENT PANEL FINISH

PANEL SUB-ASSEMBLY (See page IP-6)

8.

REMOVE POWER SWITCH

(a) Push the 2 claws and then remove the power
switch.

Push

A127732E01

INSPECTION
1.

SSW1

SSW2
B080049E04

INSPECT POWER SWITCH

(a) Measure the resistance of the switch.
Standard resistance

Tester Connection

Switch Condition

Specified Condition

7 (SS2) - 6 (GND)

Pushed

Below 1

5 (SS1) - 6 (GND)

Pushed

Below 1

7 (SS2) - 6 (GND)

Released

10 k or higher

5 (SS1) - 6 (GND)

Released

10 k or higher

1NZ-FXE STARTING POWER SWITCH

ST75

If the resistance is not as specified, replace the

power switch.

ST

ST76

1NZ-FXE STARTING POWER SWITCH

INSTALLATION

ST

1.

INSTALL POWER SWITCH

(a) Install the power switch to the upper finish panel.

2.

INSTALL UPPER INSTRUMENT PANEL FINISH

PANEL SUB-ASSEMBLY (See page IP-13)

3.

INSTALL LOWER INSTRUMENT PANEL FINISH

PANEL SUB-ASSEMBLY (See page IP-13)

4.

INSTALL NO. 1 INSTRUMENT PANEL REGISTER

ASSEMBLY (See page IP-13)

5.

CONNECT CABLE TO NEGATIVE BATTERY

TERMINAL (See page CH-7)

6.

INSTALL REAR NO. 3 FLOOR BOARD (See page CH8)

7.

INSTALL REAR DECK FLOOR BOX (See page CH-8)

8.

INSTALL REAR NO. 2 FLOOR BOARD (See page CH8)

9.

PERFORM INITIALIZATION
(a) Perform initialization (see page IN-32).
NOTICE:
Certain systems need to be initialized after
disconnecting and reconnecting the cable from
the negative (-) battery terminal.

ST76

1NZ-FXE STARTING KEY SLOT

KEY SLOT
1NZ-FXE STARTING
ENGINE

COMPONENTS

ST
KEY SLOT

NO. 3 INSTRUMENT PANEL REGISTER ASSEMBLY

B131353E01

ST77

1NZ-FXE STARTING KEY SLOT

REMOVAL
1.

DISCONNECT CABLE FROM NEGATIVE BATTERY

TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.

2.

REMOVE NO. 3 INSTRUMENT PANEL REGISTER

ASSEMBLY
(a) Detach the claw and 5 clips.
(b) Disconnect the connector and remove the
instrument panel register.

3.

REMOVE KEY SLOT

(a) Remove the 2 screws and key slot.

B074047E05

INSPECTION
1.

B080048E02

INSPECT KEY SLOT

(a) Remove the key slot (see page ST-77).
(b) Measure the resistance of the key slot.
Standard resistance

Tester Connection

Condition

Specified Condition

3 (KSW2) - 2 (COM)

Key is in key slot

10 k or higher

If the result is not as specified, replace the key slot.

(c) Inspect the key slot illumination.
(1) Connect the battery positive (+) lead from the
battery to terminal 2 and the battery negative () lead to terminal 6, then check that the
illumination comes on.
OK:
Illumination comes on.

E074066E06

ST

ST78

1NZ-FXE STARTING KEY SLOT

INSTALLATION

B074047E04

ST

1.

INSTALL KEY SLOT

(a) Install the key slot with the 2 screws.

2.

INSTALL NO. 3 INSTRUMENT PANEL REGISTER

ASSEMBLY
(a) Connect the connector.
(b) Attach the claw and 5 clips to install the instrument
panel register.

3.

CONNECT CABLE TO NEGATIVE BATTERY

TERMINAL

4.

PERFORM INITIALIZATION
(a) Perform initialization (see page IN-32).
NOTICE:
Certain systems need to be initialized after
disconnecting and reconnecting the cable from
the negative (-) battery terminal.