Infiniti G37 Coupe. Manual — part 1427

WT-80

< SYMPTOM DIAGNOSIS >

TPMS

NOTE:

If more than one wheel transmitter is NOT activated, the low tire pressure warning lamp blinking patterns for those wheels will combine.
(Example: one blink/OFF/three blinks = Tire pressure transmitter rear LH and rear RH are not activated.)

Low tire pres-
sure warning
lamp

Low tire pressure
warning lamp blinks
4 times.

Tire pressure trans-
mitter rear LH is not
activated.

Activate tire pressure transmit-

ter rear LH. Refer to

WT-5,

"TRANSMITTER WAKE UP

OPERATION : Special Repair

Requirement"

.

Low tire pressure
warning lamp comes
on and does not turn
off.

Tire pressure is low.

Check tire pressure with CON-
SULT-III. Refer to

WT-13, "AIR

PRESSURE MONITOR :
CONSULT-III Function (BCM -
AIR PRESSURE MONITOR)"

.

Low tire pressure
warning lamp blinks
on for 0.5 seconds
then turns off for 0.5
seconds-repeats for
1 minute, and then
stays on.

The fuse for combi-
nation meter from
battery is pulled out.

Check the fuse for combina-
tion meter from battery. Install
or replace (if needed).

BCM connector
pulled out.

Check BCM connector. Re-
connect if needed.

Low tire pressure or
tire pressure moni-
toring system mal-
function.

• Perform CONSULT-III Self-

Diagnosis. Refer to

WT-13,

"AIR PRESSURE MONI-
TOR : CONSULT-III Func-
tion (BCM - AIR
PRESSURE MONITOR)"

.

- Perform ID Registration if

needed. Refer to

WT-5, "ID

REGISTRATION PROCE-
DURE : Special Repair Re-
quirement"

.

Turn signal
lamp

Turn signal lamp
does not blink 2
times or buzzer does
not sound after trans-
mitter activation.

—

1.

Tool J-45295
[SST]

2.

Ignition OFF
during activa-
tion.

3.

Tool J-45295
[SST] not posi-
tioned correct-
ly.

4.

Transmitters
already activat-
ed.

1.

Install new battery.

2.

Check ignition is ON dur-
ing activation.

3.

Position tool correctly
during activation.

4.

Nothing.

Diagnosis

Item

Symptom

(Ignition switch ON)

Low tire pressure warning lamp

Cause

Action

SEIA0597E

SEIA0598E

SEIA0788E

LOW TIRE PRESSURE WARNING LAMP DOES NOT TURN ON

WT-81

< SYMPTOM DIAGNOSIS >

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LOW TIRE PRESSURE WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000001687003

DESCRIPTION

The low tire pressure warning lamp illuminates for approximately 1 second and then turns OFF when the igni-
tion switch is turned ON. This is to check that no abnormal condition is present in the tire pressure monitoring
system.
The lamp bulb may be burnt out or the tire pressure monitoring system may be malfunctioning if the low tire
pressure warning lamp does not illuminate when the ignition switch is turned ON.

Diagnosis Procedure

INFOID:0000000001687004

1.

CHECK SELF-DIAGNOSIS RESULTS

With CONSULT-III

1.

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

2.

Check display contents in self-diagnostic results.

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

YES

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

LAN-16, "Trouble Diagnosis

Flow Chart"

.

NO

>> GO TO 2.

2.

CHECK COMBINATION METER

Check unified meter function. Refer to

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

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK LOW TIRE PRESSURE WARNING LAMP

1.

Turn ignition switch “OFF”.

2.

Disconnect BCM harness connectors.

3.

Turn ignition switch “ON”. (Do not start engine.)

Does low tire pressure warning lamp turn on?

YES

>> GO TO 4.

NO

>> Check combination meter and repair or replace. Refer to

MWI-35, "Diagnosis Description"

.

4.

CHECK SYMPTOM

Check again.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

CHECK BCM

Check BCM input/output signal. Refer to

WT-45, "Reference Value"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 6.

6.

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.

WT-82

< SYMPTOM DIAGNOSIS >

LOW TIRE PRESSURE WARNING LAMP STAYS ON

LOW TIRE PRESSURE WARNING LAMP STAYS ON

Description

INFOID:0000000001687005

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 low tire pressure warning lamp turns OFF after the system
check finishes.
The system may be malfunctioning if the low tire pressure warning lamp does not turn off approximately 1 sec-
ond after the ignition switch is turned ON.

Diagnosis Procedure

INFOID:0000000001687006

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-13, "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 pressure 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 4.

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-92, "Fuse and Fusible Link

Arrangement"

.

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

PG-91, "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-83

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Also check harness for 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-45, "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