Infiniti G35 (V35) Sedan. Manual - part 1473

WT-80

< SYMPTOM DIAGNOSIS >

LOW TIRE PRESSURE WARNING LAMP STAYS ON

LOW TIRE PRESSURE WARNING LAMP STAYS ON

Description

INFOID:0000000000957916

DESCRIPTION

The tire pressure monitoring system is checked and the warning lamp is illuminated for approximately 1 sec-
ond when the ignition switch is turned ON. The warning lamp turns OFF after the system check finishes.
The system may be malfunctioning if the warning lamp does not turn off approximately 1 second after the igni-
tion switch is turned ON.

Diagnosis Procedure

INFOID:0000000000957917

1.

CHECK SYSTEM FOR BCM

With CONSULT-III

1.

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

2.

Check display contents in self-diagnostic results.

Does self-diagnostic results indicate any malfunction?

YES

>> Perform trouble diagnosis. Refer to 

WT-12, "AIR PRESSURE MONITOR : CONSULT-III Function

(BCM - AIR PRESSURE MONITOR)"

.

NO

>> GO TO 2.

2.

CHECK ID REGISTRATION

Perform ID registration all transmitters. Refer to 

WT-5, "ID REGISTRATION PROCEDURE : Special Repair

Requirement"

.

Does low tire warning lamp turn OFF?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connector.

3.

Check voltage between BCM and 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.

• 40 A fusible link [No. K located in the fuse block]. Refer to 

PG-94, "Fuse and Fusible Link

Arrangement"

.

• 10 A 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.

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connector.

3.

Check continuity between BCM harness connector M119 terminal 13 and ground.

(+)

(–)

Voltage (Approx.)

BCM

Ground

Connector

Terminal

M118

1

Battery voltage

M119

11

LOW TIRE PRESSURE WARNING LAMP STAYS ON

WT-81

< SYMPTOM DIAGNOSIS >

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Also check harness short to power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair open circuit or short to power in harness or connectors.

5.

CHECK SYMPTOM

Check again.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 6.

6.

CHECK BCM

Check BCM input/output signal. Refer to 

WT-43, "Reference Value"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 7.

7.

CHECK BCM HARNESS CONNECTOR

Check BCM pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

NO

>> Repair or replace damaged parts.

BCM

Ground

Continuity

Connector

Terminal

M119

13

Existed

WT-82

< SYMPTOM DIAGNOSIS >

LOW TIRE PRESSURE WARNING LAMP BLINKS

LOW TIRE PRESSURE WARNING LAMP BLINKS

Description

INFOID:0000000000957918

DESCRIPTION

The low tire pressure warning lamp illuminates or blinks.
However, a check is necessary because the symptom may not be caused by a system malfunction. For exam-
ple, the transmitter may not be initialized.
NOTE:
If warning lamp blinks below, the system is normal.

Blink Mode A

• This mode shows transmitter status is in OFF- mode.

Perform transmitter wake up operation. Refer to 

WT-5, "TRANS-

MITTER WAKE UP OPERATION : Special Repair Requirement"

.

Diagnosis Procedure

INFOID:0000000000957919

1.

CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connectors.

3.

Check continuity between BCM harness connector M123 terminal 149 and ground.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace short to ground harness connector.

2.

CHECK SYMPTOM

Check again.
Does the low tire pressure warning lamp remain blinking?

YES

>> GO TO 3.

NO

>> INSPECTION END

3.

CHECK BCM

Check BCM input/output signal. Refer to 

WT-43, "Reference Value"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

4.

CHECK BCM HARNESS CONNECTOR

Check BCM pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-79, "Removal and Installation"

.

NO

>> repair or replace damaged parts.

SEIA0347E

BCM

Ground

Continuity

Connector

terminal

M123

149

Not existed

TURN SIGNAL LAMP BLINKS

WT-83

< SYMPTOM DIAGNOSIS >

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TURN SIGNAL LAMP BLINKS

Description

INFOID:0000000000957920

DESCRIPTION

The turn signal lamp blinks when the ignition switch is turned ON.
The BCM connector or circuit may have a malfunction.

Diagnosis Procedure

INFOID:0000000000957921

Turn signal lamp blinks

1.

CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connector.

3.

Check continuity between BCM harness connector M123 terminal149 and ground.

Also check harness for short to ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground in harness or connector.

2.

CHECK SYMPTOM

Check again.

Does the turn signal lamp remain blinking?

YES

>> Check turn signal lamp operation. Refer to 

MWI-37, "CONSULT-III Function (METER/M&A)"

.

NO

>> INSPECTION END

BCM

Ground

Continuity

Connector

Terminal

M123

149

Not existed