Infiniti G35 (V35) Sedan. Manual - part 1460

WT-28

< COMPONENT DIAGNOSIS >

C1724, C1725, C1726, C1727 TRANSMITTER (BATT VOLT)

Are all tire pressures displayed 0 kPa?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK HARNESS BETWEEN BCM AND TIRE PERSSURE RECEIVER

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connector and tire pressure receiver harness connector.

3.

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

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK TIRE PRESSURE RECEIVER

Check tire pressure receiver. Refer to 

WT-40, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Check BCM pin terminals for damage or loose connection with harness connector. If any items

are damaged, repair or replace damage parts.

NO

>> Replace the tire pressure receiver.

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

>> GO TO 7 after malfunctioning transmitter replacement.

6.

CHECK TIRE PRESSURE MONITORING SYSTEM

With CONSULT-III

1.

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

2.

Check all tire pressure with CONSULT-III “DATA MONITOR” within 15 minutes after vehicle speed
becomes 17 km/h (11 MPH).

Does “DATA MONITOR” displayed the standardized value without turning tire pressure warning lamp ON?

YES

>> INSPECTION END

NO

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

7.

CHECK ID REGISTRATION

With CONSULT-III

1.

Perform ID registration of all transmitters. Refer to 

WT-5, "ID REGISTRATION PROCEDURE : Special

Repair Requirement"

.

2.

Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tire pressures with CONSULT-III “DATA MONITOR” within 5 minutes.

Monitored item

Condition

Display value

AIR PRESS FL

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

Approximately equal to the indication on vehicle in-
formation display

AIR PRESS FR

AIR PRESS RR

AIR PRESS RL

BCM

Tire pressure receiver

Continuity

Connector

Terminal

Connector

Terminal

M123

137

M101

1

Existed

138

4

139

2

C1724, C1725, C1726, C1727 TRANSMITTER (BATT VOLT)

WT-29

< COMPONENT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

Does “DATA MONITOR” displayed the standardized value without turning tire pressure warning lamp ON?

YES

>> INSPECTION END

NO

>> GO TO 2.

Special Repair Requirement

INFOID:0000000000957889

1.

CHECK TIRE AIR PRESSURE

Check all tire air pressures. Refer to 

WT-95, "Tire"

.

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"

.

Can ID registration of all transmitters be completed?

YES

>> END

NO

>> GO TO 1.

WT-30

< COMPONENT DIAGNOSIS >

C1729 VEHICLE SPEED SIG ERR

C1729 VEHICLE SPEED SIG ERR

Description

INFOID:0000000000957890

BCM detects no vehicle speed signal.

DTC Logic

INFOID:0000000000957891

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULTS

With CONSULT-III

1.

On “SELECT DIAG MODE”, select the “SELF-DIAG RESULT” screen.

2.

Check display contents in self-diagnostic results.

Is the “CAN COMM CIRCUIT” displayed in the self-diagnosis display?

YES

>> Perform trouble diagnosis for CAN communication system. Refer to 

LAN-18, "Trouble Diagnosis

Flow Chart"

.

NO

>> Check unified meter. Refer to 

MWI-46, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000000957892

1.

CHECK SELF-DIAGNOSTIC RESULTS

With CONSULT-III

1.

On “SELECT DIAG MODE”, select the “SELF-DIAG RESULT” screen.

2.

Check display contents in self-diagnostic results.

Is the “CAN COMM CIRCUIT” displayed in the self-diagnosis display?

YES

>> Perform trouble diagnosis for CAN communication system. Refer to 

LAN-18, "Trouble Diagnosis

Flow Chart"

.

NO

>> Check unified meter. Refer to 

MWI-46, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000000957893

1.

CHECK TIRE AIR PRESSURE

Check all tire air pressures. Refer to 

WT-95, "Tire"

.

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"

.

Can ID registration of all transmitters be completed?

YES

>> END

NO

>> GO TO 1.

DTC 

number

Trouble diagnosis name

DTC detecting condition

Possible case

C1729

VHCL SPEED SIG ERR

Vehicle speed signal error

• CAN communication error
• Combination meter malfunction
• Vehicle speed signal malfunction

Refer to 

SEC-51, "Description"

.

C1734 CONTROL UNIT

WT-31

< COMPONENT DIAGNOSIS >

C

D

F

G

H

I

J

K

L

M

A

B

WT

N

O

P

C1734 CONTROL UNIT

Description

INFOID:0000000000957894

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

DTC Logic

INFOID:0000000000957895

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

VEHICLE DRIVING

With CONSULT-III

1.

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

2.

Check all tire pressures with CONSULT-III “DATA MONITOR” within 15 minutes after vehicle speed
become 17 km/h (11 MPH).

Does “DATA MONITOR” displayed the standardized value without turning tire pressure warning lamp ON?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

WT-31, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000000957896

1.

CHECK SELF-DIAGNOSTIC RESULTS

With CONSULT-III

1.

On “SELECT DIAG” mode, select the “SELF-DIAG RESULT” screen.

2.

Check display contents in self-diagnostic results.

Does self-diagnostic results indicate any malfunction?

YES

>> Perform trouble diagnosis. Refer to 

WT-74, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connector.

3.

Check voltage between BCM harness connector terminals and ground.

Is the power supply normal?

YES

>> GO TO 3.

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-94, "Fuse and Fusible Link

Arrangement"

.

• 10A fuse [No. 10 located in the fuse block (J/B)]. Refer to 

PG-93, "Fuse, Connector and Termi-

nal 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 Battery voltage.

3.

CHECK GROUND CIRCUIT

DTC number 

Trouble diagnosis name

DTC detecting condition

Possible case

C1734

CONTROL UNIT

Tire pressure monitoring system in BCM is malfunctioning

BCM malfunction

(+)

(–)

Voltage (Approx.)

BCM

Ground

Connector

Terminal

M118

1

Battery voltage

M119

11