Wt

SUSPENSION

SECTION

WT

ROAD WHEELS & TIRES

A

B

C

D

WT

CONTENTS
BASIC INSPECTION ................................... 3
.
DIAGNOSIS AND REPAIR WORK FLOW ........ 3
.
Work Flow ................................................................ 3
.

INSPECTION AND ADJUSTMENT .................... 5
.
TRANSMITTER WAKE UP OPERATION .................. 5
.
TRANSMITTER WAKE UP OPERATION : Description .................................................................... 5
.
TRANSMITTER WAKE UP OPERATION : Special Repair Requirement ........................................... 5
.
ID REGISTRATION PROCEDURE ............................. 5
.
ID REGISTRATION PROCEDURE : Description ...... 5
ID REGISTRATION PROCEDURE : Special Repair Requirement ...................................................... 5
.

FUNCTION DIAGNOSIS .............................. 8
.

DTC Logic ...............................................................15
.
Diagnosis Procedure ..............................................15
.
Special Repair Requirement ...................................16
.

C1708, C1709, C1710, C1711 TRANSMITTER
... 17
Description ..............................................................17
.
DTC Logic ...............................................................17
.
.
.

... 20
Description ..............................................................20
.
DTC Logic ...............................................................20
.
.
.

F

G

H

I

J

K

TPMS .................................................................. 8
.

... 23

System Diagram ....................................................... 8
.
System Description .................................................. 8
.
Component Parts Location ....................................... 8
.
Component Description ............................................ 9
.

Description ..............................................................23
.
DTC Logic ...............................................................23
.
.
.

DIAGNOSIS SYSTEM (BCM) ...........................10
.

... 25

COMMON ITEM ........................................................ 10
.
COMMON ITEM : CONSULT-III Function (BCM COMMON ITEM) .................................................... 10
.
AIR PRESSURE MONITOR ..................................... 11
.
AIR PRESSURE MONITOR : Diagnosis Description ......................................................................... 11
.
AIR PRESSURE MONITOR : CONSULT-III Function ......................................................................... 13
.

COMPONENT DIAGNOSIS ........................ 15
.
C1704, C1705, C1706, C1707 LOW TIRE
PRESSURE .......................................................15
.
Description ............................................................. 15
.

Revision: 2008 October

Description ..............................................................25
.
DTC Logic ...............................................................25
.
.
.

L

M

N

O

... 28
Description ..............................................................28
.
DTC Logic ...............................................................28
.
.
.

C1729 VEHICLE SPEED SIGNAL .................... 31
Description ..............................................................31
.

WT-1

2009 370Z

P

DTC Logic .............................................................. 31
.
Diagnosis Procedure ............................................. 31
.
Special Repair Requirement .................................. 31
.

C1734 BCM ....................................................... 33
.

Description ............................................................. 84
.
Diagnosis Procedure .............................................. 84
.

TURN SIGNAL LAMP BLINKS ........................ 86
.
Description ............................................................. 86
.
Diagnosis Procedure .............................................. 86
.

Description ............................................................. 33
.
DTC Logic .............................................................. 33
.
.
Special Repair Requirement .................................. 34
.

ID REGISTRATION CANNOT BE COMPLETED ..................................................................... 87
.

TIRE PRESSURE RECEIVER .......................... 35
.

Description ............................................................. 87
.
.

Description ............................................................. 35
.
Component Function Check .................................. 35
.
.

NORMAL OPERATING CONDITION ............... 88
.

TIRE PRESSURE WARNING CHECK
SWITCH ............................................................ 37
.

NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................... 89
.

Description ............................................................. 37
.
.
.

NVH Troubleshooting Chart ................................... 89
.

PRECAUTION ............................................ 90

LOW TIRE PRESSURE WARNING LAMP ...... 39
.

PRECAUTIONS ................................................ 90
.

Description ............................................................. 39
.
.
.

POWER SUPPLY AND GROUND CIRCUIT .... 40
.

Description ............................................................. 88
.

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ................................................................ 90
.
Service Notice or Precautions ................................ 90
.

.

PREPARATION .......................................... 91

TPMS ................................................................ 41
.

PREPARATION ................................................ 91
.

Wiring Diagram - TIRE PRESSURE MONITORING SYSTEM - ...................................................... 41
.

Special Service Tool .............................................. 91
.
Commercial Service Tool ....................................... 91
.

ECU DIAGNOSIS ....................................... 44
.

ON-VEHICLE MAINTENANCE .................. 92

BCM (BODY CONTROL MODULE) ................. 44
.

ROAD WHEEL .................................................. 92
.

Reference Value .................................................... 44
.
Wiring Diagram - BCM - ........................................ 67
.
Fail-safe ................................................................. 72
.
DTC Inspection Priority Chart ............................. 75
.
DTC Index ............................................................. 76
.

Inspection ............................................................... 92
.

ON-VEHICLE REPAIR ............................... 93
ROAD WHEEL TIRE ASSEMBLY ................... 93
.
Adjustment ............................................................. 93
.

SYMPTOM DIAGNOSIS ............................ 79
.

TRANSMITTER ................................................ 96
.

TPMS ................................................................ 79
.

Exploded View ....................................................... 96
.
Removal and Installation ........................................ 96
.

Symptom Table ..................................................... 79
.

LOW TIRE PRESSURE WARNING LAMP
DOES NOT BLINKS ......................................... 82
.
Description ............................................................. 82
.
.

DOES NOT TURN OFF .................................... 83
.
Description ............................................................. 83
.
.

BLINKS ............................................................. 84
.


TIRE PRESSURE RECEIVER .......................... 98
.
Exploded View ....................................................... 98
.
Removal and Installation ........................................ 98
.

SERVICE DATA AND SPECIFICATIONS
(SDS) .......................................................... 99
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................ 99
.
Road Wheel ........................................................... 99
.
Wheel Nut .............................................................. 99
.
Tire Air Pressure .................................................... 99
.

WT-2

2009 370Z

DIAGNOSIS AND REPAIR WORK FLOW
< BASIC INSPECTION >

BASIC INSPECTION

A

Work Flow

INFOID:0000000004529891

B

DETAILED FLOW

1.COLLECT THE INFORMATION FROM THE CUSTOMER

C

It is also important to clarify customer concerns before starting the inspection. Reproduce the symptom, and
understand it fully. Interview the customer about the concerns carefully. In some cases, it is necessary to
D
check the symptoms by driving the vehicle with the customer.
CAUTION:
Customers are not professionals. Never assume“maybe the customer means...” or “maybe the customer mentioned this symptom.
WT
>> GO TO 2.

2.CRUISE TEST

F

Start the engine and drive the vehicle.
Dose the symptom that customer concerns occur?
YES >> GO TO 3.
NO
>> GO TO 4.

G

3.BASIC INSPECTION

H

Check the tire pressure for all wheels and adjust to the specified value. Refer to WT-99, "Tire Air Pressure".
Is the malfunction corrected?
YES >> INSPECTION END
NO
>> GO TO 4.

I

4.PERFORM SELF-DIAGNOSIS

J

With CONSULT-III
Perform self-diagnosis.
Is any DTC detected?
YES >> GO TO 6.
NO
>> GO TO 5.

K

5.CHECK SYMPTOM

L

Perform trouble diagnosis for the applicable symptom. Refer to WT-79, "Symptom Table".
Is the cause of the malfunction detected?
YES >> GO TO 7.
NO
>> GO TO 9.

M

6.CIRCUIT DIAGNOSIS

N

Inspect the malfunctioning system indicated by the DTC code that is detected during self-diagnosis. Refer to
WT-76, "DTC Index".
O

>> GO TO 7.

7.REPAIR WORK

P

Repair or replace the malfunctioning part.
>> GO TO 8.

1.
2.

Erase the self-diagnosis results memory of the low tire pressure warning control unit.
Drive the vehicle.


WT-3

2009 370Z

3. Perform self-diagnosis.
YES >> GO TO 6.
NO
>> GO TO 9.

9.FINAL CHECK
1. Perform a cruise test.
2. Check that the low tire pressure warning lamp turns OFF.
Dose the tire pressure warning lamp turn OFF?
NO
>> GO TO 3.


WT-4

2009 370Z

INSPECTION AND ADJUSTMENT


A

TRANSMITTER WAKE UP OPERATION
TRANSMITTER WAKE UP OPERATION : Description

INFOID:0000000004470652

B

This procedure must be done after replacement of a transmitter, BCM, or rotation of wheels.

TRANSMITTER WAKE UP OPERATION : Special Repair Requirement

INFOID:0000000004470653

C

1.TRANSMITTER WAKE-UP PROCEDURE
1.
2.
3.

Turn the ignition switch ON.
Contact the transmitter activation tool (J-45295) (1) to the side of
the tire at the location to the transmitter.
Press and hold the activation tool button while pushing the tool
to the tire surface. (approximately for 5 seconds)
CAUTION:
Perform the wake-up procedure starting from the vehicle
front left wheel, then repeat the procedure in the order of
the front right wheel, rear right wheel, and rear left wheel.

D

WT

F

NNEIC0020ZZ

4.

Check that the low tire pressure warning lamp blinks in the pattern shown as per the following. The pattern
indicates that the transmitter wake-up procedure for the wheel is completed.

G

H

I

J

K

L
SEIA0762E

5.

Check that the turn signal lamps blink twice when the transmitter wake-up procedure for all wheels is completed.
6. Check that the low tire pressure warning lamp turns OFF, after the transmitter wake-up procedure is completed for all wheels and turns OFF.
Is the transmitter wake-up procedure completed?
YES >> Perform the transmitter ID registration procedure. Refer to WT-5, "ID REGISTRATION PROCEDURE : Special Repair Requirement".
NO
>> Perform trouble diagnosis for the transmitter. Refer to WT-17, "Diagnosis Procedure".

M

N

O

ID REGISTRATION PROCEDURE
ID REGISTRATION PROCEDURE : Description

INFOID:0000000004470654

This procedure must be done after replacing or rotating wheels, replacing transmitter or BCM.

ID REGISTRATION PROCEDURE : Special Repair Requirement

INFOID:0000000004470655

1.TRANSMITTER ID REGISTRATION PROCEDURE
With CONSULT-III.

WT-5

2009 370Z

P

1. Display the “WORK SUPPORT” screen and select “ID REGIST”.
Is the transmitter activation tool (J-45295) used for the transmitter ID registration procedure?
YES >> GO TO 2.
NO
>> GO TO 3.

2.TRANSMITTER ID REGISTRATION PROCEDURE (WITH TRANSMITTER ACTIVATION TOOL)
1.
2.
3.
4.

Select the start button on the “ID REGIST” screen.
Contact the transmitter activation tool (J-45295) (1) to the side of
the tire at the location to the transmitter.
Press and hold the activation tool button while pushing the tool
to the tire surface. (approximately for 5 seconds)
CAUTION:
Perform the ID registration procedure starting from the
vehicle front left wheel, then repeat the procedure in the
order of the front right wheel, rear right wheel, and rear left
wheel.
NNEIC0020ZZ

5.

When ID registration is completed, check the following pattern at each wheel.
Sequence

ID registration position

1

Front left wheel

2

Front right wheel

3

Rear right wheel

4

Rear left wheel

Turn signal lamp

CONSULT-III

2 blinks

“Red”
↓
“Green”

6.

After the ID registration procedure for all wheels is completed, press “END” to end ID registration, and
check that ID registration for all wheels is completed.
Is the check result normal?
YES >> ID registration END.
NO
>> Performs trouble-diagnosis of the Tire Pressure Monitoring System (TPMS). Refer to WT-11, "AIR
PRESSURE MONITOR : Diagnosis Description".

3.TRANSMITTER ID REGISTRATION PROCEDURE (WITHOUT TRANSMITTER ACTIVATION TOOL)
1.

Adjust the tire pressure for all wheels to match the list below.
Tire position
Front LH

220 (2.2, 31)

Rear RH

200 (2.0, 29)

Rear LH

3.

240 (2.4, 35)

Front RH

2.

Tire pressure kPa (kg/cm2, psi)

180 (1.8, 26)

Drive the vehicle at a speed at more than 40 km/h (25 MPH) for 3 minutes or more, then perform the
transmitter ID registration procedure.
After ID registration for all wheels is completed, press “END” to end ID registration.
ID registration position

CONSULT-III

Front LH
“Red”
↓
“Green”

Front RH
Rear RH
Rear LH

4.

Adjust the tire pressures for all wheels to the specified value. Refer to WT-99, "Tire Air Pressure".


WT-6

2009 370Z

Is ID registrations for all wheels completed?
YES >> ID registration END.
NO
>> Performs trouble-diagnosis of the Tire Pressure Monitoring System (TPMS). Refer to WT-11, "AIR
PRESSURE MONITOR : Diagnosis Description".

A

B

C

D

WT

F

G

H

I

J

K

L

M

N

O

P


WT-7

2009 370Z

TPMS
< FUNCTION DIAGNOSIS >

FUNCTION DIAGNOSIS
TPMS
System Diagram

INFOID:0000000004470656

JPEIC0055GB

System Description

INFOID:0000000004470657

DESCRIPTION
During driving, the TPMS (Tire Pressure Monitoring System) receives the signal transmitted from transmitter
installed in each wheel. The BCM (Body Control Module) of this system has pressure judgment and trouble
diagnosis functions. When the tire pressure monitoring system detects low inflation pressure or another
unusual symptom, the low tire pressure warning lamps in the combination meter comes on.

Component Parts Location

INFOID:0000000004470658

JSEIA0074ZZ

1.

Transmitter


2.

Tire pressure warning check switch

WT-8

3.

Tire pressure receiver

2009 370Z

TPMS
A.

Wheel

D. Glove box assembly

B.

Behind instrument lower panel LH

E.

C.

Low tire pressure warning lamp
(On the combination meter)

BCM
Refer to BCS-8, "Component Parts
Location"

Component Description

A

B
INFOID:0000000004470659

C
Component parts

Function

BCM (Body Control Module)

WT-33, "Description".

Transmitter






Turn signal lamp

ID registration of each wheel has been completed, turn signal lamp flashes.

D

WT

Transmits the vehicle speed signal via CAN communication to BCM.
Combination meter


F

Receives the following signals via CAN communication for BCM.
• Low tire pressure warning lamp signal
• Hazard lamp signal
• Buzzer signal

G

Illuminates if malfunction is detected in electrical system of TPMS.

H

I

J

K

L

M

N

O

P


WT-9

2009 370Z

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)

INFOID:0000000004692754

APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
Diagnosis mode

Function Description

Work Support

Changes the setting for each system function.

Self Diagnostic Result

Displays the diagnosis results judged by BCM.

CAN Diag Support Monitor

Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III operation manual.

Data Monitor

The BCM input/output signals are displayed.

Active Test

The signals used to activate each device are forcibly supplied from BCM.

Ecu Identification

The BCM part number is displayed.

Configuration

• Read and save the vehicle specification.
• Write the vehicle specification when replacing BCM.

SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×: Applicable item

System

Sub system selection item

Diagnosis mode
Work Support

Data Monitor

Active Test

×

×

×

Door lock

DOOR LOCK

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps

FLASHER

×

×

×

×

×

×

—

AIR CONDITONER*

• Intelligent Key system
• Engine start system

INTELLIGENT KEY

Combination switch

COMB SW

Body control system

BCM

IVIS - NATS

IMMU

Interior room lamp battery saver

BATTERY SAVER

Trunk lid open

TRUNK

Vehicle security system

THEFT ALM

RAP system

RETAINED PWR

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

TPMS (AIR PRESSURE MONITOR)

×

×

×
×
×

×

×

×

×

×

×

×
×

×

×

NOTE:
*: This item is displayed, but is not used.

FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.

WT-10

2009 370Z

CONSULT screen item

Indication/Unit

Description

A

Vehicle Speed

km/h

Vehicle speed of the moment a particular DTC is detected

Odo/Trip Meter

km

Total mileage (Odometer value) of the moment a particular DTC is detected

SLEEP>LOCK

While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)

SLEEP>OFF

While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)

LOCK>ACC

While turning power supply position from “LOCK” to “ACC”

ACC>ON

While turning power supply position from “ACC” to “IGN”

RUN>ACC

While turning power supply position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)

CRANK>RUN

While turning power supply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)

RUN>URGENT

While turning power supply position from “RUN“ to “ACC” (Emergency stop operation)

ACC>OFF

While turning power supply position from “ACC” to “OFF”

OFF>LOCK
Vehicle Condition

OFF>ACC
ON>CRANK

D

WT

F

While turning power supply position from “OFF” to “ACC”

G

While turning power supply position from “IGN” to “CRANKING”
While turning BCM status from normal mode (Power supply position is “OFF”.) to low power consumption mode

LOCK>SLEEP

While turning BCM status from normal mode (Power supply position is “LOCK”.) to low power consumption mode

LOCK

Power supply position is “LOCK” (Ignition switch OFF with steering is locked.)

OFF

Power supply position is “OFF” (Ignition switch OFF with steering
is unlocked.)

ACC

Power supply position is “ACC” (Ignition switch ACC)

ON

Power supply position is “IGN” (Ignition switch ON with engine
stopped)

ENGINE RUN

Power supply position is “RUN” (Ignition switch ON with engine
running)

CRANKING

Power supply position is “CRANKING” (At engine cranking)

0 - 39

The number of times that ignition switch is turned ON after DTC is detected
• The number is 0 when a malfunction is detected now.
• The number increases like 1 → 2 → 3...38 → 39 after returning to the normal condition
whenever ignition switch OFF → ON.
• The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

AIR PRESSURE MONITOR

I

J

K

L

M

INFOID:0000000004470661

O

DESCRIPTION
During driving, the transmitter installed at each road wheel transmits the tire pressure information signal to the
receiver. The receiver receives the tire pressure signal and transmits it to the BCM. The BCM judges whether
or not the tire pressure is OK based on the tire pressure information signal, and if it judges that the tire pressure is low, it transmits the information via CAN communication to the combination meter.
After receiving the tire pressure information via CAN communication from the BCM, the combination meter illuminates the low tire pressure warning lamp and displays.

SELF DIAGNOSTIC PROCEDURE
Initiate diagnosis mode by short-circuiting the low tire pressure warning check switch to the ground.
The blinking pattern of the low tire pressure warning lamp indicates the conditions of the malfunction.


H

N

AIR PRESSURE MONITOR : Diagnosis Description

1.
2.

C

While turning power supply position from “OFF” to “LOCK”
Power position status of
the moment a particular
DTC is detected

OFF>SLEEP

IGN Counter

B

WT-11

2009 370Z

P


JPEIC0030GB

NOTE:
If the low tire pressure warning lamp is blinking repeatedly at 5 Hz, there is no malfunction occurring in the
system.
Blinking
pattern

Items

Diagnostic items detected when···

15

Tire pressure value (Front LH)

Front LH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or less.

16

Tire pressure value (Front RH)

Front RH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or less.

17

Tire pressure value (Rear RH)

Rear RH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or less.

18

Tire pressure value (Rear LH)

Rear LH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or less.

21

Transmitter no data (Front LH)

Data from front LH transmitter cannot be received.

22

Transmitter no data (Front RH)

Data from front RH transmitter cannot be received.

23

Transmitter no data (Rear RH)

Data from rear RH transmitter cannot be received.

24

Transmitter no data (Rear LH)

Data from rear LH transmitter cannot be received.

31

Transmitter checksum error
(Front LH)

Checksum data from front LH transmitter is malfunctioning.

32

(Front RH)

Checksum data from front RH transmitter is malfunctioning.

33

(Rear RH)

Checksum data from rear RH transmitter is malfunctioning.

34

(Rear LH)

Checksum data from rear LH transmitter is malfunctioning.

35

Transmitter pressure data error
(Front LH)

Air pressure data from front LH transmitter is malfunction.

36

(Front RH)

Air pressure data from front RH transmitter is malfunction.

37

(Rear RH)

Air pressure data from rear RH transmitter is malfunction.

38

(Rear LH)

Air pressure data from rear LH transmitter is malfunction.

41

Transmitter function code error
(Front LH)

Function code data from front LH transmitter is malfunction.

42

(Front RH)

Function code data from front RH transmitter is malfunction.

43

(Rear RH)

Function code data from rear RH transmitter is malfunction.

44

(Rear LH)

Check item

Function code data from rear LH transmitter is malfunction.


WT-15

WT-17

WT-20

WT-23

WT-25

WT-12

2009 370Z

Blinking
pattern

Items

45

Transmitter battery voltage low
(Front LH)

Battery voltage of front LH transmitter drops.

46

(Front RH)

Battery voltage of front RH transmitter drops.

47

(Rear RH)

Battery voltage of rear RH transmitter drops.

48

(Rear LH)

Battery voltage of rear LH transmitter drops.

52

Vehicle speed signal error

Vehicle speed signal error.

WT-31

53

Control unit

Tire pressure monitoring system malfunction in BCM.

WT-33

Tire pressure warning check
switch

Tire pressure warning switch circuit is open.

No blinking

Diagnostic items detected when···

Check item

A

B
WT-28

C

–

D

WT

ERASE SELF-DIAGNOSIS
After performing self-diagnosis by short-circuiting the tire pressure warning check switch to the body, turn the
ignition switch OFF.

AIR PRESSURE MONITOR : CONSULT-III Function

F

INFOID:0000000004470662

G

FUNCTION
The diagnosis functions (main functions) include the following: “WORK SUPPORT”, “SELF DIAGNOSTIC
RESULT”, “DATA MONITOR” and “ACTIVE TEST”.
Diagnostic test mode

H

Function

Work support

In this mode, it is possible to make quick and accurate adjustments by following the instructions on the CONSULT-III display.

Self diagnostic result

Receives self-diagnosis results from the low tire pressure warning control unit, and indicates
DTCs and the number of malfunctions.

Data monitor

Receives input/output signals from the low tire pressure warning control unit and indicates
and stores them to facilitate locating the causes of malfunctions.

Active test

Transmits command to the low tire pressure warning control unit to change output signals
and check operation of output system.

I

J

K

WORK SUPPORT MODE
L

Refer to WT-5, "ID REGISTRATION PROCEDURE : Special Repair Requirement".

SELF-DIAG RESULTS MODE
Refer to WT-76, "DTC Index".

M

DATA MONITOR MODE
Screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-III perform REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.
Monitor item (Unit)

N

O

Remark

AIR PRESS FL (kPa), (kg/cm2), (Psi)
AIR PRESS FR (kPa), (kg/cm2), (Psi)

P

Air pressure of tires

AIR PRESS RR (kPa), (kg/cm2), (Psi)
AIR PRESS RL (kPa), (kg/cm2), (Psi)


WT-13

2009 370Z

Monitor item (Unit)

Remark

ID REGST FL1
ID REGST FR1
ID REGST RR1

ID is registered: Done
ID is not registered: Yet

ID REGST RL1
WARNING LAMP

Low tire pressure warning lamp ON: On
Low tire pressure warning lamp OFF: Off

BUZZER

Combination meter buzzer ON: On
Combination meter buzzer OFF: Off

NOTE:
Before performing the self-diagnosis, be sure to register the ID, or erase the actual malfunction location may
be different from that displayed on CONSULT-III.

ACTIVE TEST MODE
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or erase the actual malfunction may be different from that displayed on CONSULT-III.
TEST ITEM LIST
Test item

Content

WARNING LAMP

This test is able to check to check that the low tire pressure warning lamp turns on.

ID REGIST WARNING

This test is able to check to check that the buzzer sounds or the low tire pressure warning lamp
turns on.

FLASHER

This test is able to check to check that each turn signal lamp turns on.

HORN

This test is able to check to check that the horn sounds.


WT-14

2009 370Z

C1704, C1705, C1706, C1707 LOW TIRE PRESSURE
< COMPONENT DIAGNOSIS >

COMPONENT DIAGNOSIS

A

Description

INFOID:0000000004470663

When the tire pressure monitoring system detects low inflation pressure, the low tire pressure warning lamps
in the combination meter comes on.

DTC Logic

C

INFOID:0000000004470664

DTC DETECTION LOGIC
DTC

B

D

Display item

Malfunction detected condition

Possible cause

C1704

LOW PRESSURE FL

Front LH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or
less.

C1705

LOW PRESSURE FR

Front RH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or
less.

C1706

LOW PRESSURE RR

Rear RH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or
less.

C1707

LOW PRESSURE RL

WT

Low tire pressure

Rear LH tire pressure drops to 189.6 kPa (1.9 kg/cm2, 27 psi) or
less.

F

G

H

DTC CONFIRMATION PROCEDURE

1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.
2. Perform BCM (AIR PRESSURE MONITOR) self-diagnosis.
Is DTC “C1704”, “C1705”, “C1706”, “C1707” detected?
YES >> Perform trouble diagnosis. Refer to WT-15, "Diagnosis Procedure".
NO
>> INSPECTION END

I

J

K

Diagnosis Procedure

INFOID:0000000004470665

1.CHECK TIRE PRESSURE

L

Check the internal pressure of all wheels. Refer to WT-99, "Tire Air Pressure".
Is the inspection result normal?
YES >> Replace the DTC-detected malfunctioning transmitter. Refer to WT-96, "Exploded View".
NO
>> After adjusting the air pressure, GO TO 2.

M

2.CHECK TIRE PRESSURE SIGNAL
With CONSULT-III
2. On “DATA MONITOR”, select “AIR PRESS FL”, “AIR PRESS FR”, “AIR PRESS RR” and “AIR PRESS
RL”, and check that the tire pressures match the standard value.
Monitor item

Condition

AIR PRESS RR

P
Drive for 3 minutes at a speed of 40 km/h (25 MPH) or
more, then drive normally for 10 minutes.

Internal pressure of tires

AIR PRESS RL

CAUTION:
Stop the vehicle and within 5 minutes, use CONSULT-III “DATA MONITOR” to display the tire pressure
for all wheels.

O

Displayed value

AIR PRESS FL
AIR PRESS FR

N

WT-15

2009 370Z

YES >> Inspect or repair the tires or wheels and adjust the tire pressure to the specification.
NO
>> GO TO 1.

Special Repair Requirement

INFOID:0000000004470666

Check all tires for tire pressures. Refer to WT-99, "Tire Air Pressure".
Does all tire pressure data meet the specification?
YES >> GO TO 2.
NO
>> Inspect or repair the tires or wheels and adjust the tire pressure to the specification.

2.PERFORM ID REGISTRATION
Perform ID registration. Refer to WT-5, "ID REGISTRATION PROCEDURE : Special Repair Requirement".
>> END


WT-16

2009 370Z


Description

A
INFOID:0000000004470667

The transmitter integrated with a valve is installed on a wheel, and transmits a detected tire pressure signal by
radio wave.

DTC Logic

B

INFOID:0000000004470668

C

DTC DETECTION LOGIC
DTC

Display item


C1708

[NO DATA] FL
[NO DATA] FR

Tire pressure data signal from the front right wheel
transmitter cannot be detected.

C1710

[NO DATA] RR

Tire pressure data signal from the rear right wheel

C1711

[NO DATA] RL

D

Tire pressure data signal from the front left wheel

C1709

Possible cause

Tire pressure data signal from the rear left wheel

• Harness or connector
(Tire pressure receiver, BCM)
• ID registration is not finished
• Transmitter malfunction
• BCM malfunction

WT

F

G


With CONSULT-III
NO
>> INSPECTION END

H

Diagnosis Procedure

J

INFOID:0000000004470669

With CONSULT-III
Monitor item

Condition

AIR PRESS FR

K

L

Displayed value

M

AIR PRESS FL

AIR PRESS RR

I



N

AIR PRESS RL

CAUTION:
for all wheels.
Is a tire pressure of 0 kPa (0 Psi) displayed for all wheels?
YES >> GO TO 2.
NO
>> GO TO 5.

2.CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER
1.
2.
3.

Turn the ignition switch OFF.
Disconnect BCM harness connector and tire pressure receiver harness connector.
Check the continuity between BCM harness connector and tire pressure receiver harness connector.


WT-17

2009 370Z

O

P

BCM
Connector

Terminal

Connector

Terminal

137
M123

1

138

M101

4

139

4.

Continuity

Existed

2

Check the continuity between BCM harness connector and ground.
BCM
Connector

—

Continuity

Ground

Terminal

Not existed

137
M123

138
139

YES >> GO TO 3.
NO
>> Repair or replace damaged parts.

3.CHECK TIRE PRESSURE RECEIVER POWER SUPPLY CIRCUIT
1.
2.
3.

Connect the BCM harness connector.
CAUTION:
Never start the engine.
Check the voltage between the BCM harness connector and ground.
BCM
Connector
M123

—

138

Voltage

Ground

Terminal

5V

YES >> GO TO 4.
NO

4.CHECK TIRE PRESSURE RECEIVER
Check tire pressure receiver. Refer to WT-35, "Diagnosis Procedure".
YES >> GO TO 5.
NO
>> Replace tire pressure receiver. Refer to WT-98, "Exploded View".

5.CHECK ID REGISTRATION
Perform ID registration of all transmitters. Refer to WT-5, "ID REGISTRATION PROCEDURE : Special Repair
Requirement".
Can ID registration of all transmitters be completed?
YES >> GO TO 6.
NO
>> Replace transmitter. Refer to WT-96, "Exploded View".

6.CHECK TIRE PRESSURE MONITORING SYSTEM
1.
2.

With CONSULT-III
Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
On “DATA MONITOR”, select “AIR PRESS FL”, “AIR PRESS FR”, “AIR PRESS RR” and “AIR PRESS


WT-18

2009 370Z

Monitor item

Condition

Displayed value

A

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR

Drive at a speed of 40 km/h (25 MPH) or more, for several
minutes without stopping.


B

AIR PRESS RL

CAUTION:
Stop the vehicle and within 15 minutes use the CONSULT-III “DATA MONITOR” to read the tire pressure for all wheels.
NO
>> Replace BCM. Refer to BCS-84, "Exploded View".


INFOID:0000000004546513

C

D

WT

F

YES >> GO TO 2.
NO

G


H

>> END
I

J

K

L

M

N

O

P


WT-19

2009 370Z


Description

INFOID:0000000004472073

radio wave.

DTC Logic

INFOID:0000000004470672

DTC DETECTION LOGIC
DTC

Display item


Possible case

C1712

[CHECKSUM ERR] FL

Checksum data from front LH transmitter is malfunctioning.

C1713

[CHECKSUM ERR] FR

Checksum data from front RH transmitter is malfunctioning.

C1714

[CHECKSUM ERR] RR

Checksum data from rear RH transmitter is malfunctioning.

C1715

[CHECKSUM ERR] RL

Checksum data from rear LH transmitter is malfunctioning.

• Tire pressure receiver malfunction
• BCM malfunction


With CONSULT-III
1. Drive at a speed of 40 km/h (25 MPH) or more, then stop the vehicle for several minutes.
Is DTC “C1712”, “C1713”, “C1714“, “C1715” detected?
NO
>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004470673

With CONSULT-III
Perform the ID registration of all transmitters. Refer to WT-5, "ID REGISTRATION PROCEDURE : Special
Repair Requirement".
1.

Monitor item

Condition

Displayed value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR



AIR PRESS RL

CAUTION:
for all wheels.
YES >> GO TO 7.
NO
>> GO TO 2.

1.
2.

With CONSULT-III
Select “DATA MONITOR” mode for “AIR PRESSURE MONITOR” with CONSULT-III.
Read out the value of “AIR PRESS FL”, “AIR PRESS FR”, “AIR PRESS RR” and “AIR PRESS RL”.


WT-20

2009 370Z

3. Check that the tire pressure is the specified value.
A
Monitor item

Condition

Displayed value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR

B



AIR PRESS RL

C
CAUTION:
for all wheels.
D
Is the inspection 0 kPa (0 Psi)?
YES >> GO TO 3.
NO
>> GO TO 6.
WT
CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER

3.
1.
2.
3.

BCM
Terminal

Connector

Terminal

137
M123

Continuity

1

138

M101

4

139

4.

G


Connector

H
Existed

2

BCM
Connector

F

I

—

Continuity

Ground

Terminal

Not existed

J

137
M123

138
139

YES >> GO TO 4.
NO
>> Repair or replace error-detected parts.

K

L

1.
2.
3.

M

CAUTION:
BCM
Connector

—

138

O

Voltage

Ground

Terminal

M123

N

5V

P

YES >> GO TO 5.
NO

Check the tire pressure receiver. Refer to WT-35, "Diagnosis Procedure".

WT-21

2009 370Z

YES >> Replace tire pressure receiver. Refer to WT-98, "Exploded View".
NO
>> GO TO 6.

Requirement".
YES >> GO TO 7.
NO
>> Replace the DTC-detected malfunctioning transmitter. Refer to WT-96, "Exploded View".

1.
2.

With CONSULT-III
Monitored item

Condition

Display value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR

Start the engine and drive at a 40 km/h (25 MPH) or
more for several minutes.

Approximately equal to the indication on vehicle
information display.

AIR PRESS RL

CAUTION:
Stop the vehicle and within 15 minutes use the CONSULT-III “DATA MONITOR” to read the tire pressure for all wheels.
NO


INFOID:0000000004543192

YES >> GO TO 2.
NO

>> END


WT-22

2009 370Z


Description

A
INFOID:0000000004476222

radio wave.

DTC Logic

B

INFOID:0000000004470676

C

DTC DETECTION LOGIC
DTC

Display item


C1716

[PRESSDATA ERR] FL
[PRESSDATA ERR] FR

Malfunction in the tire pressure data from the front right
wheel transmitter.

C1718

[PRESSDATA ERR] RR

Malfunction in the tire pressure data from the rear right
wheel transmitter.

C1719

[PRESSDATA ERR] RL

D

Malfunction in the tire pressure data from the front left
wheel transmitter.

C1717

Possible case

Malfunction in the tire pressure data from the rear left
wheel transmitter.

WT
• ID registration is not finished

F

G


With CONSULT-III
NO
>> INSPECTION END

H

Diagnosis Procedure

J

I

INFOID:0000000004470677


K

Check the internal pressure of all wheels. Refer to WT-99, "Tire Air Pressure".
NO
>> After adjusting the tire pressure, GO TO 2.

L

With CONSULT-III
1. Check and adjust the tire pressure for all wheels. Refer to WT-99, "Tire Air Pressure".
2. Perform transmitter ID registration for all wheels. Refer to WT-5, "ID REGISTRATION PROCEDURE :
Special Repair Requirement".
CAUTION:
Stop the vehicle and within 15 minutes, use CONSULT-III “DATA MONITOR” to display the tire
pressure for all wheels.
5. Check that “DATA MONITOR” displays tire pressure of 438.60 kPa (63.60 Psi).
Is the inspection 438.60 kPa (63.60 Psi)?
YES >> Replace transmitter the tire pressure 438.60 kPa (63.60 Psi) displayed. Refer to WT-96,
"Exploded View".
NO
>> GO TO 1.


WT-23

2009 370Z

M

N

O

P



INFOID:0000000004543305

YES >> GO TO 2.
NO

>> END


WT-24

2009 370Z



A

Description

INFOID:0000000004476223

radio wave.

DTC Logic

B

INFOID:0000000004470681

C

DTC DETECTION LOGIC
DTC

Display item

Possible case


C1720

[CODE ERR] FL
[CODE ERR] FR

Malfunction in the tire pressure data from the front right wheel
transmitter.

C1722

[CODE ERR] RR

Malfunction in the tire pressure data from the rear right wheel
transmitter.

C1723

[CODE ERR] RL

• BCM malfunction

WT

Malfunction in the tire pressure data from the front left wheel
transmitter.

C1721

D

Malfunction in the tire pressure data from the rear left wheel
transmitter.

F

G


With CONSULT-III
NO
>> INSPECTION END

H

Diagnosis Procedure

J

INFOID:0000000004470682

With CONSULT-III
1. Perform the ID registration of all transmitters. Refer to WT-5, "ID REGISTRATION PROCEDURE : Special

I

K

L

M
Monitor item

Condition

Displayed value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR


N

AIR PRESS RL

O

CAUTION:
for all wheels.
YES >> GO TO 6.
NO
>> GO TO 2.

1.

With CONSULT-III
Drive for 3 minutes at a speed of 40 km/h (25 MPH) or more, then drive normally for 10 minutes.


WT-25

2009 370Z

P

Monitor item

Condition

Displayed value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR



AIR PRESS RL

Are all tire pressure displayed 0 kPa (0 Psi)?
YES >> GO TO 3.
NO
>> GO TO 6.

1.
2.
3.

Check continuity between BCM harness connector and tire pressure receiver harness connector.
BCM
Connector

Terminal

Connector

Terminal

137
M123

1

138

M101

4

139

4.

Continuity

Existed

2

Check continuity between BCM harness connector and ground.
BCM
Connector

—

Continuity

Ground

Terminal

Not existed

137
M123

138
139

YES >> GO TO 4.
NO

1.
2.
3.

CAUTION:
BCM
Connector
M123

—

138

Voltage

Ground

Terminal

5V

YES >> GO TO 5.
NO

YES >> GO TO 6.
NO
>> Replace tire pressure receiver. Refer to WT-98, "Exploded View".

WT-26

2009 370Z



A

With CONSULT-III
Monitor item

Condition

Displayed value

C

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR

B



D

AIR PRESS RL

CAUTION:
Stop the vehicle and within 5 minutes, use CONSULT-III “DATA MONITOR” to display the tire pressure WT
for all wheels.
F
NO


INFOID:0000000004543306

G

YES >> GO TO 2.
NO

H

I


J

>> END
K

L

M

N

O

P


WT-27

2009 370Z


Description

INFOID:0000000004476224

radio wave.

DTC Logic

INFOID:0000000004470685

DTC DETECTION LOGIC
DTC

Display item


C1724

[BATT VOLT LOW] FL

Battery voltage of front LH transmitter drops.

C1725

[BATT VOLT LOW] FR

Battery voltage of front RH transmitter drops.

C1726

[BATT VOLT LOW] RR

Battery voltage of rear RH transmitter drops.

C1727

[BATT VOLT LOW] RL

Battery voltage of rear LH transmitter drops.

Possible case
• BCM malfunction


With CONSULT-III
NO
>> INSPECTION END

Diagnosis Procedure

INFOID:0000000004470686

With CONSULT-III
Perform the ID registration of all transmitters. Refer to WT-5, "ID REGISTRATION PROCEDURE : Special
2. Drive at a 40 km/h (25 MPH) or more, then drive normally for 10 minutes.
YES >> GO TO 2.
NO
>> GO TO 5.
1.

1.
2.

With CONSULT-III
Monitor item

Condition

Displayed value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR



AIR PRESS RL

CAUTION:
for all wheels.
Are all tire pressures displayed 0 kPa?
YES >> GO TO 3.
NO
>> GO TO 6.

WT-28

2009 370Z


1.
2.
3.

BCM


Connector

Terminal

Connector

Terminal

137
M123

B

Continuity

C

1

138

M101

4

139

4.

A


Existed

D

2

WT

BCM
Connector

—

Continuity

Ground

Terminal

Not existed

137
M123

F

138
139

G

YES >> GO TO 4.
NO

H

1.
2.
3.

CAUTION:
BCM
Connector

J

—

138

Voltage

Ground

Terminal

M123

I

5V

K

YES >> GO TO 5.
NO

L

M

NO
>> GO TO 6.

N

Requirement".
YES >> GO TO 7.
NO
>> Replace the malfunctioning transmitter. Refer to WT-96, "Exploded View".

1.
2.

With CONSULT-III


WT-29

2009 370Z

O

P

Monitor item

Condition

Displayed value

AIR PRESS FL
AIR PRESS FR
AIR PRESS RR



AIR PRESS RL

CAUTION:
for all wheels.
YES >> Replace the malfunctioning transmitter. Refer to WT-96, "Exploded View".
NO
>> Replace BCM. Refer to WT-99, "Tire Air Pressure".


INFOID:0000000004543307

YES >> GO TO 2.
NO

>> END


WT-30

2009 370Z

C1729 VEHICLE SPEED SIGNAL


A

Description

INFOID:0000000004470688

BCM detects no vehicle speed signal.

B

DTC Logic

INFOID:0000000004470689

C

DTC DETECTION LOGIC
DTC
number

Trouble diagnosis name

C1729

VHCL SPEED SIG ERR

DTC detecting condition
Vehicle speed signal not detected.

Possible case

D

• CAN communication error
• Combination meter malfunction

WT


F

With CONSULT-III
1. Drive for several minutes at a speed of 40 km/h (25 MPH) or more, then stop the vehicle.
Is DTC “C1729” detected?
NO
>> INSPECTION END

G

H

Diagnosis Procedure

INFOID:0000000004470690

1.PERFORM COMBINATION METER SELF-DIAGNOSIS

I

With CONSULT-III
Perform combination meter self-diagnosis.
YES >> Check the DTC. Refer to MWI-71, "DTC Index".
NO
>> GO TO 2.

J


K

With CONSULT-III
Perform BCM (AIR PRESSURE MONITOR) self-diagnosis.
YES >> Replace BCM. Refer to BCS-17, "COMMON ITEM : CONSULT-III Function (BCM - COMMON
ITEM)".
NO
>> GO TO 3.

L

M

3.CHECK INFORMATION
With CONSULT-III
Use CONSULT-III “DATA MONITOR” to check the input/output values. Refer to WT-44, "Reference Value".
YES >> Check pin terminal and connection of each harness connector for malfunctioning conditions.
NO


O

INFOID:0000000004543315

P

YES >> GO TO 2.
NO

N

WT-31

2009 370Z


>> END


WT-32

2009 370Z

C1734 BCM

C1734 BCM

A

Description

INFOID:0000000004470692

The BCM reads the tire pressure signal received by the tire pressure receiver, and controls the low tire pressure warning lamp and the buzzer operations. It also has a judgment function to detect a system malfunction.

DTC Logic

B

INFOID:0000000004470693

C

DTC DETECTION LOGIC
DTC

Display item

C1734

CONTROL UNIT

Tire pressure monitoring system malfunction in BCM

Possible case
BCM malfunction


WT

With CONSULT-III
CAUTION:
Perform within 15 minutes after stop the vehicle.
NO
>> INSPECTION END

F

1.
2.

Diagnosis Procedure

G

H
INFOID:0000000004470694

1.CHECK BCM POWER SUPPLY
1.
2.
3.

D

I

Disconnect BCM harness connector.
Check voltage between BCM harness connector terminals and ground.
BCM
Connector

11

Voltage

Ground

1

M119

—

Battery voltage

Terminal

M118

J

K

L

Is the power supply normal?
YES >> GO TO 2.
NO
>> Check the following. If any items are damaged, repair or replace damage parts.
• 40A fusible link [No. K located in the fuse block]. Refer to PG-85, "Fuse and Fusible Link
Arrangement".
• 10A fuse [No. 10 located in the fuse block (J/B)]. Refer to PG-84, "Fuse, Connector and Terminal Arrangement".
• Harness for short or open between battery and BCM harness connector M118 terminal 1.
• Harness for short or open between battery and BCM harness connector M119 terminal 11.
• Check the Battery voltage.

M

N

O

2.CHECK BCM GROUND
BCM
Connector

—

13

Continuity

Ground

Terminal

M119

P

Existed

YES >> GO TO 3.

WT-33

2009 370Z

C1734 BCM
NO

1.
2.

Disconnect tire pressure receiver harness connector.
BCM
Connector

Terminal

Connector

Terminal

137
M123

1

138

M101

4

139

3.

Continuity

Existed

2

BCM
Connector

—

Continuity

Ground

Terminal

Not existed

137
M123

138
139

YES >> GO TO 4.
NO

4.CHECK BCM
Check the BCM input/output signal. Refer to WT-44, "Reference Value".
NO
>> GO TO 5.

5.CHECK BCM HARNESS CONNECTOR
Check the BCM pin terminals for damage or loose connection with harness connector.
YES >> Replace BCM. Refer to BCS-84, "Exploded View".
NO
>> Check for looseness or damage at the harness connector pins of the low tire pressure warning
control unit. Repair or replace if necessary.


INFOID:0000000004543870

YES >> GO TO 2.
NO

>> END


WT-34

2009 370Z

TIRE PRESSURE RECEIVER


A

Description

INFOID:0000000004470696

The tire pressure receiver receives the tire pressure signal transmitted by the transmitter in each wheel.

Component Function Check

INFOID:0000000004470697

1.TIRE PRESSURE MONITORING SYSTEM OPERATION
1.
2.

C

With CONSULT-III
Monitor item

B

Condition

D

WT

Displayed value

AIR PRESS FL
AIR PRESS FR


AIR PRESS RR


F

AIR PRESS RL

CAUTION:
for all wheels.
NO
>> Perform trouble diagnosis. Refer to WT-35, "Diagnosis Procedure".

G

Diagnosis Procedure

I

INFOID:0000000004470698

H

1.CHECK TIRE PRESSURE RECEIVER SIGNAL
1.
2.

J

CAUTION:
Check tire pressure receiver connector and ground signal with oscilloscope.

Connector

Terminal

—

Condition

K
Voltage (Approx.)

L

M
Stand by state

N
OCC3881D

M101

2

Ground

O
When receiving the signal from the transmitter

P
OCC3880D

NO
>> GO TO 2.

WT-35

2009 370Z


2.CHECK TIRE PRESSURE RECEIVER INPUT VOLTAGE
1.
2.

Disconnect tire pressure receiver connector.
Check voltage between tire pressure receiver connector and ground.
Connector
M101

—
Ground

4

Voltage (Approx.)
5.0 V

Terminal

YES >> GO TO 3.
NO

3.CHECK TIRE PRESSURE RECEIVER GROUND CIRCUIT
1.
2.

Disconnect BCM harness connector.
Check continuity between BCM harness connector and tire pressure receiver connector.
BCM


Connector

Connector

Terminal

M123

3.

Terminal
137

M101

1

Continuity
Existed

BCM
Connector
M123

—

137

Continuity

Ground

Terminal

Not existed

YES >> GO TO 4.
NO

4.CHECK BCM CIRCUIT
Inspect the BCM circuit. Refer to WT-33, "Diagnosis Procedure".
Is the BCM circuit normal?
NO


WT-36

2009 370Z

TIRE PRESSURE WARNING CHECK SWITCH


A

Description

INFOID:0000000004470699

Self-diagnosis can be performed by short-circuiting the tire pressure warning check switch to the ground.(Selfdiagnosis indicates the location of the malfunction by the blinking of the low tire pressure warning lamp on the
combination meter.)

B

C

NOTE:
If low tire pressure warning lamp blinks as shown in the figure, the system is normal.
• This mode shows transmitter status is in OFF-mode.
Perform transmitter wake up operation. Refer to WT-5, "TRANSMITTER WAKE UP OPERATION : Special Repair Requirement".

D

WT

F

JPEIC0031GB

G


INFOID:0000000004470700

1.CHECK THE ILLUMINATION OF THE LOW TIRE PRESSURE WARNING LAMP

H

1.

CAUTION:
2. Short-circuit the tire pressure warning check switch connector terminal to the ground.
3. Check that the low tire pressure warning lamp blinking.
Is inspection result normal?
NO
>> Perform diagnosis. Refer to WT-37, "Diagnosis Procedure".

Diagnosis Procedure

I

J

INFOID:0000000004470701

K

1.CHECK TIRE PRESSURE WARNING CHECK SWITCH SIGNAL
1.
2.

L

CAUTION:
Check the voltage between tire pressure warning check switch connector and ground.
Connector

—

1

Voltage (Approx.)

Ground

Terminal

M23

M

12 V

N

YES >> Replace BCM. Refer to BCS-84, "Exploded View".
NO
>> GO TO 2.

O

2.CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT
1.
2.
3.

P

Disconnect BCM harness connector
Check the continuity between BCM harness connector and tire pressure warning check switch connector.


WT-37

2009 370Z

BCM


Connector

Connector

Terminal

M123

4.

Terminal
149

M23

1

Continuity
Existed

BCM
Connector
M123

—

149

Continuity

Ground

Terminal

Not existed

YES >> Check BCM pin terminals for damage or loose connection with harness connector. If any items
are damaged, repair or replace damaged parts. Replace BCM. Refer to BCS-84, "Exploded
View".
NO


WT-38

2009 370Z



A

Description

INFOID:0000000004470702

Uses CAN communication from the BCM to illuminate the low tire pressure warning lamp on the combination
meter.

Condition

OFF

Ignition switch ON.
Less than 189.6 kPa (1.9

C


Ignition switch OFF.

B

Illuminates for 1 second, then turns OFF.
kg/cm2,

ON

27 psi) [NOTE]

Tire pressure monitoring system malfunction [Other diagnostic item]

Flashes for 1 minute, then stays illuminated.

NOTE: Standard tire pressure is for 240 kPa (2.4 kg/cm2, 35 psi) vehicles.


WT

INFOID:0000000004470703

F

1.CHECK THE ILLUMINATION OF THE LOW TIRE PRESSURE WARNING LAMP
Check that the low tire pressure warning lamp is turned OFF after illuminating for approximately 1 second,
when the ignition switch is turned ON.
NO
>> Perform trouble diagnosis. Refer to WT-39, "Diagnosis Procedure".

Diagnosis Procedure

G

H

INFOID:0000000004470704

I

1.POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit. Refer to WT-40, "Diagnosis Procedure".
YES >> GO TO 2.
NO

J


K

With CONSULT-III
YES >> Check the DTC. Refer to WT-76, "DTC Index".
NO
>> GO TO 3.

L

M

3.CHECK LOW TIRE PRESSURE WARNING LAMP SIGNAL
With CONSULT-III
CAUTION:
2. On “DATA MONITOR”, select “WARNING LAMP”.
3. Check that the low tire pressure warning lamp is turned OFF after illuminating for approximately 1 second,
when the ignition switch is turned ON.
YES >> Check the combination meter. Refer to MWI-32, "Diagnosis Description".
NO
>> Replace the BCM. Refer to BCS-84, "Exploded View".
1.


D

WT-39

2009 370Z

N

O

P

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure

INFOID:0000000004476225

1.POWER SUPPLY SYSTEM CHECK
1.
2.
3.
4.

Disconnect the BCM harness connector.
CAUTION:
Check the voltage between the BCM harness connector and the ground.
BCM
Connector
M118

11

Voltage

Ground

1

M119

—

Terminal

Battery voltage

YES >> GO TO 2.
NO

2.GROUND SYSTEM INSPECTION
1.
2.

Check the continuity between the BCM harness connector and the ground.
BCM
Connector
M119

—

13

Continuity

Ground

Terminal

Existed

YES >> • Check the 10 A fuse [No. 10 in fuse block (J/B)].
• Check the 40 A fusible link [No. K in fuse block].
NO


WT-40

2009 370Z

TPMS

TPMS

A

Wiring Diagram - TIRE PRESSURE MONITORING SYSTEM -

INFOID:0000000004470707

B

C

D

WT

F

G

H

I

J

K

L

M

N

O

P
JCEWA0091GB


WT-41

2009 370Z

TPMS

JCEWA0092GB


WT-42

2009 370Z

TPMS
A

B

C

D

WT

F

G

H

I

J

K

L

M

N

O
JCEWA0093GB

P


WT-43

2009 370Z

BCM (BODY CONTROL MODULE)
< ECU DIAGNOSIS >

ECU DIAGNOSIS
Reference Value

INFOID:0000000004692749

VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM

Monitor Item
FR WIPER HI

FR WIPER LOW

FR WASHER SW

FR WIPER INT

FR WIPER STOP
INT VOLUME
TURN SIGNAL R

TURN SIGNAL L

TAIL LAMP SW

HI BEAM SW

HEAD LAMP SW 1

HEAD LAMP SW 2

PASSING SW

AUTO LIGHT SW
FR FOG SW
RR FOG SW

DOOR SW-DR

DOOR SW-AS
DOOR SW-RR


Condition

Value/Status

Other than front wiper switch HI

Off

Front wiper switch HI

On

Other than front wiper switch LO

Off

Front wiper switch LO

On

Front washer switch OFF

Off

Front washer switch ON

On

Other than front wiper switch INT

Off

Front wiper switch INT

On

Front wiper is not in STOP position

Off

Front wiper is in STOP position

On

Wiper intermittent dial is in a dial position 1 - 7

Wiper intermittent dial
position

Other than turn signal switch RH

Off

Turn signal switch RH

On

Other than turn signal switch LH

Off

Turn signal switch LH

On

Other than lighting switch 1ST and 2ND

Off

Lighting switch 1ST or 2ND

On

Other than lighting switch HI

Off

Lighting switch HI

On

Other than lighting switch 2ND

Off

Lighting switch 2ND

On

Other than lighting switch 2ND

Off

Lighting switch 2ND

On

Other than lighting switch PASS

Off

Lighting switch PASS

On

Other than lighting switch AUTO

Off

Lighting switch AUTO

On

NOTE:
The item is indicated, but not monitored.

Off

Rear fog lamp switch OFF

Off

Rear fog lamp switch ON

On

Driver door closed

Off

Driver door opened

On

Passenger door closed

Off

Passenger door opened

On

NOTE:

Off

WT-44

2009 370Z

< ECU DIAGNOSIS >
Monitor Item
DOOR SW-RL
DOOR SW-BK

CDL LOCK SW

CDL UNLOCK SW

KEY CYL LK-SW

KEY CYL UN-SW
KEY CYL SW-TR
HAZARD SW
REAR DEF SW
NOTE:
At models with NAVI this item
is not monitored.

Condition

Value/Status

A

NOTE:

Off

Back door closed

Off

Back door opened

On

Other than door lock and unlock switch LOCK

Off

Door lock and unlock switch LOCK

On

Other than door lock and unlock switch UNLOCK

Off

Door lock and unlock switch UNLOCK

On

Other than driver door key cylinder LOCK position

Off

Driver door key cylinder LOCK position

On

Other than driver door key cylinder UNLOCK position

Off

Driver door key cylinder UNLOCK position

On

NOTE:

Off

Hazard switch is OFF

Off

Hazard switch is ON

On

Rear window defogger switch OFF

Off

Rear window defogger switch ON

On

B

C

D

WT

F

G

H

H/L WASH SW

NOTE:

Off

TR CANCEL SW

NOTE:

Off

Back door opener switch OFF

Off

While the back door opener switch is turned ON

On

NOTE:

Off

LOCK button of the Intelligent Key is not pressed

Off

LOCK button of the Intelligent Key is pressed

On

UNLOCK button of the Intelligent Key is not pressed

Off

UNLOCK button of the Intelligent Key is pressed

On

NOTE:

Off

PANIC button of the Intelligent Key is not pressed

Off

PANIC button of the Intelligent Key is pressed

On

UNLOCK button of the Intelligent Key is not pressed

Off

UNLOCK button of the Intelligent Key is pressed and held

On

LOCK/UNLOCK button of the Intelligent Key is not pressed and held simultaneously

Off

LOCK/UNLOCK button of the Intelligent Key is pressed and held simultaneously

On

TR/BD OPEN SW
TRNK/HAT MNTR
RKE-LOCK

RKE-UNLOCK
RKE-TR/BD
RKE-PANIC

RKE-P/W OPEN

RKE-MODE CHG

OPTICAL SENSOR

REQ SW -DR

REQ SW -AS


J

K

L

M

Bright outside of the vehicle

Close to 5 V

Dark outside of the vehicle

Close to 0 V

Driver door request switch is not pressed

Off

Driver door request switch is pressed

On

Passenger door request switch is not pressed

Off

Passenger door request switch is pressed

On

WT-45

I

2009 370Z

N

O

P

< ECU DIAGNOSIS >
Monitor Item

Condition

Value/Status

REQ SW -RR

NOTE:

Off

REQ SW -RL

NOTE:

Off

Back door request switch is not pressed

Off

Back door request switch is pressed

On

Push-button ignition switch (push switch) is not pressed

Off

Push-button ignition switch (push switch) is pressed

On

Ignition switch in OFF or ACC position

Off

Ignition switch in ON position

On

NOTE:

Off

The clutch pedal is not depressed

Off

The clutch pedal is depressed

On

Stop lamp switch 1 signal circuit is open

Off

Stop lamp switch 1 signal circuit is normal

On

The brake pedal is not depressed

Off

The brake pedal is depressed

On

• Selector lever in P position (A/T models)
• The clutch pedal is depressed (M/T models without SynchroRev Match
mode)

Off

• Selector lever in any position other than P (A/T models)
• The clutch pedal is not depressed (M/T models without SynchroRev
Match mode)

On

• Selector lever in any position other than P and N (A/T models)
• Control lever in any position other than neutral position (M/T models with
SynchroRev Match mode)

Off

• Selector lever in P or N position (A/T models)
• Control lever in neutral position (M/T models with SynchroRev Match
mode)

On

Steering is unlocked

Off

Steering is locked

On

Steering is locked

Off


On


Off


On

REQ SW -BD/TR

PUSH SW

IGN RLY2 -F/B
ACC RLY -F/B
CLUCH SW
NOTE:
At A/T models this item is not
monitored.
BRAKE SW 1

BRAKE SW 2

DETE/CANCL SW
NOTE:
At M/T models with SynchroRev Match mode this item is not
monitored.

SFT PN/N SW
NOTE:
At M/T models without SynchroRev Match mode this item
is not monitored.

S/L -LOCK

S/L -UNLOCK

S/L RELAY-F/B

UNLK SEN -DR

PUSH SW -IPDM

IGN RLY1 -F/B

DETE SW -IPDM


Driver door is unlocked

Off

Driver door is locked

On

Push-button ignition switch (push-switch) is not pressed

Off

Push-button ignition switch (push-switch) is pressed

On


Off


On

Selector lever in any position other than P

Off

Selector lever in P position

On

WT-46

2009 370Z

< ECU DIAGNOSIS >
Monitor Item

SFT PN -IPDM

SFT P -MET

SFT N -MET

Condition

Value/Status

A

• Selector lever in any position other than P and N (A/T models)
• The clutch pedal is not depressed (M/T models)

Off

• Selector lever in P or N position (A/T models)
• The clutch pedal is depressed (M/T models)

On

Selector lever in any position other than P

Off

Selector lever in P position

On

Selector lever in any position other than N

Off

Selector lever in N position

Stop

While the engine stalls

S/L UNLK-IPDM

S/L RELAY-REQ

D

Stall

At engine cranking

Crank

Engine running
S/L LOCK-IPDM

C

On

Engine stopped
ENGINE STATE

B

Run


Off

Steering is locked

On

Steering is locked

Off


On

Steering lock system is not the LOCK condition and the changing condition
from LOCK to UNLOCK

Off

Steering lock system are not the LOCK condition or the changing condition
from LOCK to UNLOCK

On

WT

F

G

VEH SPEED 1

While driving

Equivalent to speedometer reading

VEH SPEED 2

While driving

Equivalent to speedometer reading

H

Driver door is locked
DOOR STAT-DR

LOCK

Wait with selective UNLOCK operation (60 seconds)
Driver door is unlocked

LOCK

Wait with selective UNLOCK operation (60 seconds)
Passenger door is unlocked

ID OK FLAG

PRMT ENG STRT
PRMT RKE STRT

READY

J

UNLOCK

Passenger door is locked
DOOR STAT-AS

I

K

READY
UNLOCK

Steering is locked

Reset


L

Set

The engine start is prohibited

Reset

The engine start is permitted

Set

NOTE:

M

Reset

N

The Intelligent Key is not inserted into key slot

Off

The Intelligent Key is inserted into key slot

On

RKE OPE COUN1

During the operation of the Intelligent Key

Operation frequency of
the Intelligent Key

RKE OPE COUN2

NOTE:

—

The key ID that the key slot receives is not recognized by any key ID registered to BCM.

Yet

The key ID that the key slot receives is recognized by any key ID registered
to BCM.

Done

KEY SW -SLOT

CONFRM ID ALL


WT-47

2009 370Z

O

P

< ECU DIAGNOSIS >
Monitor Item

CONFIRM ID4

CONFIRM ID3

CONFIRM ID2

CONFIRM ID1

TP 4

TP 3

TP 2

TP 1

Condition

Value/Status

The key ID that the key slot receives is not recognized by the fourth key ID
registered to BCM.

Yet

The key ID that the key slot receives is recognized by the fourth key ID registered to BCM.

Done

The key ID that the key slot receives is not recognized by the third key ID
registered to BCM.

Yet

The key ID that the key slot receives is recognized by the third key ID registered to BCM.

Done

The key ID that the key slot receives is not recognized by the second key ID
registered to BCM.

Yet

The key ID that the key slot receives is recognized by the second key ID registered to BCM.

Done

The key ID that the key slot receives is not recognized by the first key ID registered to BCM.

Yet

The key ID that the key slot receives is recognized by the first key ID registered to BCM.

Done

The ID of fourth Intelligent Key is not registered to BCM
The ID of fourth Intelligent Key is registered to BCM
The ID of third Intelligent Key is not registered to BCM
The ID of third Intelligent Key is registered to BCM
The ID of second Intelligent Key is not registered to BCM

Yet
Done
Yet
Done
Yet

The ID of second Intelligent Key is registered to BCM

Done

The ID of first Intelligent Key is not registered to BCM

Yet

The ID of first Intelligent Key is registered to BCM

Done

AIR PRESS FL

Ignition switch ON (Only when the signal from the transmitter is received)

Air pressure of front LH
tire

AIR PRESS FR


Air pressure of front RH
tire

AIR PRESS RR


Air pressure of rear RH
tire

AIR PRESS RL


Air pressure of rear LH
tire

ID REGST FL1

ID REGST FR1

ID REGST RR1

ID REGST RL1

WARNING LAMP

BUZZER


ID of front LH tire transmitter is registered
ID of front LH tire transmitter is not registered
ID of front RH tire transmitter is registered
ID of front RH tire transmitter is not registered
ID of rear RH tire transmitter is registered
ID of rear RH tire transmitter is not registered
ID of rear LH tire transmitter is registered

Done
Yet
Done
Yet
Done
Yet
Done

ID of rear LH tire transmitter is not registered

Yet

Tire pressure indicator OFF

Off

Tire pressure indicator ON

On

Tire pressure warning alarm is not sounding

Off

Tire pressure warning alarm is sounding

On

WT-48

2009 370Z

< ECU DIAGNOSIS >
TERMINAL LAYOUT
A

B

C

D

WT

F

G

H

I

J

K

L

M

N

O
JPMIA0062ZZ

P

PHYSICAL VALUES


WT-49

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)

Description
Condition

Value
(Approx.)

Signal name

Input/
Output
Input

Ignition switch OFF

Battery voltage

+

–

1
(W)

Ground

Battery power supply

2
(W)

Ground

P/W power supply
(BAT)

Output

Ignition switch OFF

12 V

3
(Y)

Ground

P/W power supply
(RAP)

Output

Ignition switch ON

12 V

Interior room lamp battery saver is activated.
(Cuts the interior room lamp power supply)

0V

Interior room lamp battery saver is not activated.
(Outputs the interior room lamp power supply)

12 V

4
(R)

5
(G)

8
(V)

Ground

Ground

Ground

Interior room lamp
power supply

Passenger door UNLOCK

All doors, fuel lid
LOCK

9
(G)

Ground

11
(BR)

Ground

Battery power supply

13
(B)

Ground

Ground

Driver door, fuel lid
UNLOCK

Output

Output

Output

Output

Passenger
door

All doors, fuel
lid

Driver door,
fuel lid

UNLOCK (Actuator is activated)

12 V

Other than UNLOCK (Actuator is not activated)

0V

LOCK
(Actuator is activated)

12 V

Other than LOCK
(Actuator is not activated)

0V

UNLOCK
(Actuator is activated)

12 V

Other than UNLOCK
(Actuator is not activated)

0V

Input

Ignition switch OFF

Battery voltage

—

Ignition switch ON

0V

OFF

14
(R)

Ground

Push-button ignition
switch illumination
ground

0V
NOTE:
When the illumination brightening/dimming level is in the neutral
position.

Output

Tail lamp

ON

JSNIA0010GB

15
(Y)

Ground

ACC indicator lamp


Output

Ignition switch

OFF (LOCK indicator is
not illuminated)
ACC

WT-50

Battery voltage
0V

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Turn signal switch OFF

17
(W)

Ground

Turn signal RH (Front
and side)

Output

Ignition switch
ON

Value
(Approx.)

A

0V

B

C

D
PKID0926E

6.5 V

18
(O)

Ground

Turn signal LH (Front
and side)

Output

Ignition switch
ON

0V

WT

F

G
PKID0926E

6.5 V
Ground

Room lamp timer
control

Output

Interior room
lamp

OFF

12 V

ON

0V


19
(V)

0V

H

I

20
(V)

Ground

Turn signal RH (Rear)

Output

Ignition switch
ON

J


PKID0926E

K

6.5 V

24*1
(O)

Ground

Ground

Back door open

Rear fog lamp

Output

Output

Back door

Rear fog lamp

12 V

L

Other than OPEN
(Back door opener actuator is not activated)

0V

M

OFF

0V

ON

12 V


23
(L)

OPEN
(Back door opener actuator is activated)

0V

N

O
25
(LG)

Ground

Turn signal LH (Rear)

Output

Ignition switch
ON


P
PKID0926E

6.5 V
30
(R)

Ground

Luggage room lamp


Output

Luggage room
lamp

WT-51

ON

0V

OFF

12 V

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

When Intelligent Key is in
the passenger compartment
JMKIA0062GB

34
(G)

Ground

Luggage room antenna (−)

Output

Ignition switch
OFF

When Intelligent Key is not
in the passenger compartment
JMKIA0063GB

JMKIA0062GB

35
(R)

Ground

Luggage room antenna (+)

Output

Ignition switch
OFF

JMKIA0063GB

the antenna detection
area

38
(B)

Ground

Rear bumper antenna (−)

Output

When the back
door request
switch is operated with ignition switch
OFF

JMKIA0062GB

in the antenna detection
area
JMKIA0063GB


WT-52

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

A

B
area

39
(W)

Ground

Rear bumper antenna (+)

Output

C

When the back
door request
OFF

JMKIA0062GB

D

WT
area

F
JMKIA0063GB

Ground

Ignition relay (IPDM
E/R) control

Output

Ignition switch

G

Ignition switch
ON (A/T models)
52
(SB)

Ground

Starter relay control

Output
Ignition switch
ON (M/T models)

OFF or ACC

12 V

ON

0V

When selector lever is in P
or N position

12 V

When selector lever is not
in P or N position

0V

When the clutch pedal is
depressed

Battery voltage

When the clutch pedal is
not depressed

0V

ON (Pressed)

47
(V)

0V

H

I

J

K
61
(W)

Ground

Back door request
switch

Input

Back door request switch

L

OFF (Not pressed)

JPMIA0016GB

1.0 V
64
(G)

Ground

Intelligent Key warning buzzer

Output

Intelligent Key
warning buzzer

Sounding

0V

Not sounding

12 V

M

N

O
66
(R)

Ground

Back door switch

Input

Back door
switch

OFF (Door close)

P
JPMIA0011GB

11.8 V
ON (Door open)


WT-53

0V

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)

Description

67
(GR)

–

Ground

Back door opener
switch

Condition

Input/
Output

Input

Back door
opener switch

Value
(Approx.)

Pressed

+

Signal name

0V

Not pressed

JPMIA0011GB

11.8 V

JMKIA0062GB

72
(L)

Ground

Room antenna (−)
(Center console)

Output

Ignition switch
OFF

JMKIA0063GB

JMKIA0062GB

73
(P)

Ground

Room antenna (+)
(Center console)

Output

Ignition switch
OFF

JMKIA0063GB


WT-54

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

A

B
area

74
(SB)

Ground

Passenger door antenna (−)

Output

When the passenger door request switch is
operated with
ignition switch
OFF

C

JMKIA0062GB

D

WT
area

F
JMKIA0063GB

G

H

area

75
(BR)

Ground

Passenger door antenna (+)

Output

When the passenger door request switch is
operated with
ignition switch
OFF

JMKIA0062GB

I

J
area

K
JMKIA0063GB

L

M
area

76
(V)

Ground

Driver door antenna
(−)

Output

When the driver door request
OFF

N
JMKIA0062GB

O

area

P

JMKIA0063GB


WT-55

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

area

77
(LG)

Ground

Driver door antenna
(+)

Output

When the driver door request
OFF

JMKIA0062GB

area
JMKIA0063GB

80
(GR)

Ground

NATS antenna amp
(Built in key slot)

Input/
Output

During waiting

Ignition switch is pressed
while inserting the Intelligent Key into the key slot.

Just after pressing ignition
switch. Pointer of tester should
move.

81
(W)

Ground

NATS antenna amp
(Built in key slot)

Input/
Output

During waiting

Ignition switch is pressed
while inserting the Intelligent Key into the key slot.

Just after pressing ignition
switch. Pointer of tester should
move.

82
(R)

Ground

Ignition relay [Fuse
block (J/B)] control

Output

Ignition switch

OFF or ACC

0V

ON

12 V

During waiting

JMKIA0064GB

83
(GR)

Ground

Remote keyless entry
receiver communication

Input/
Output

When operating either button on the Intelligent Key

JMKIA0065GB


WT-56

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

A

B
All switches OFF
(Wiper intermittent dial 4)

C

JPMIA0041GB

1.4 V

D

WT
87
(BR)

Ground

Combination switch
INPUT 5

Input

Combination
switch

Rear fog lamp switch ON

F
JPMIA0038GB

1.3 V

G
Any of the conditions below with all switches OFF
• Wiper intermittent dial 1

H

JPMIA0040GB

I

1.3 V

J

K

L

M

N

O

P


WT-57

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

All switches OFF

JPMIA0041GB

1.4 V

Lighting switch HI

JPMIA0036GB

88
(V)

Ground

Combination switch
INPUT 3

Input

1.3 V

Combination
switch

Lighting switch 2ND

JPMIA0037GB

1.3 V

JPMIA0040GB

1.3 V
Push-button ig- Pressed
nition switch
Not pressed
(push switch)

0V

89
(BR)

Ground

Push-button ignition
switch (Push switch)

90
(P)

Ground

CAN-L

Input/
Output

—

—

91
(L)

Ground

CAN-H

Input/
Output

—

—

Input

OFF

92
(LG)

Ground

Key slot illumination

Output

Key slot illumination

Battery voltage

0V

Blinking

JPMIA0015GB

6.5 V
ON


WT-58

12 V

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

93
(V)

Ground

95
(O)

Ground

ACC relay control

Output

96*2
(Y)

Ground

Control device (Detention switch) power
supply

Output

97
(L)

Ground

Steering lock condition No. 1

Input

OFF (LOCK indicator is
not illuminated)

Output

Ignition switch

A

Battery voltage

B

ON

98
(P)

Ground

Steering lock condition No. 2

(R)*2

Ground

4

Clutch pedal position
switch (M/T models
without SynchroRev
Match mode)

Ignition switch

0V

OFF

0V

ACC or ON

12 V

—

C

12 V

D

Steering lock

Steering lock

Selector lever
Input
Clutch pedal
position switch

LOCK status

0V

UNLOCK status

12 V

LOCK status

12 V

UNLOCK status

0V

P position

Input

Selector lever P position switch (A/T models)

99*3
(BR)*

ON indicator lamp

Value
(Approx.)

0V

Any position other than P

12 V

OFF (Clutch pedal is depressed)

0V

ON (Clutch pedal is not
depressed)

Battery voltage

ON (Pressed)

WT

F

G

H

0V

I
100
(GR)

Ground

Passenger door request switch

Input

Passenger
door request
switch

OFF (Not pressed)

J
JPMIA0016GB

K

1.0 V
ON (Pressed)

0V

L
101
(Y)

Ground

Driver door request
switch

Input

Driver door request switch

OFF (Not pressed)

M
JPMIA0016GB

N

1.0 V
102
(O)

OFF or ACC

0V

ON

12 V

Ground

Blower fan motor relay control

103
(LG)

Ground

Remote keyless entry
receiver power supply

Output

Ignition switch OFF

106
(W)

Ground

Steering lock unit
power supply

Output

Ignition switch


Output

Ignition switch

WT-59

O

12 V

OFF or ACC
ON

P

12 V
0V

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

All switches OFF

JPMIA0041GB

1.4 V


JPMIA0037GB

1.3 V

107
(LG)

Ground

Combination switch
INPUT 1

Input

Combination
switch


JPMIA0036GB

1.3 V

Front wiper switch LO

JPMIA0038GB

1.3 V

Front washer switch ON

JPMIA0039GB

1.3 V


WT-60

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

A

B
All switches OFF

C

JPMIA0041GB

1.4 V

D

WT
Lighting switch AUTO

F
JPMIA0038GB

108
(R)

Ground

Combination switch
INPUT 4

Input

1.3 V

Combination
switch

G

H

Lighting switch 1ST

JPMIA0036GB

I

1.3 V

J

K
JPMIA0039GB

L

1.3 V

M

N

O

P


WT-61

2009 370Z

< ECU DIAGNOSIS >
Terminal No.
(Wire color)
+

–

Description
Signal name

Condition

Input/
Output

Value
(Approx.)

All switches OFF

JPMIA0041GB

1.4 V

Lighting switch PASS

JPMIA0037GB

1.3 V

109
(Y)

Ground

Combination switch
INPUT 2

Input

Combination
switch

Lighting switch 2ND

JPMIA0036GB

1.3 V

Front wiper switch INT

JPMIA0038GB

1.3 V

Front wiper switch HI

JPMIA0040GB

1.3 V
ON

110
(P)

Ground

Hazard switch

Input

Hazard switch

0V

OFF

JPMIA0012GB

1.1 V


WT-62

2009 370Z

Wt

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