Infiniti G37 Coupe. Manual — part 1428
WT-84
< SYMPTOM DIAGNOSIS >
LOW TIRE PRESSURE WARNING LAMP BLINKS
LOW TIRE PRESSURE WARNING LAMP BLINKS
Description
INFOID:0000000001687007
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 low tire pressure 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
MITTER WAKE UP OPERATION : Special Repair Requirement"
.
Diagnosis Procedure
INFOID:0000000001687008
1.
CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY
1.
Turn ignition switch “ON”.
2.
Check voltage between tire pressure warning check switch connector M23 terminal 1 and ground.
Is the reference voltage outputted?
YES
>> Repair or replace BCM circuit. Replace BCM. Refer to
BCS-79, "Removal and Installation"
.
NO
>> GO TO 2.
2.
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 terminal 149 and tire pressure warning check
switch connector M23 terminal 1.
4.
Check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK BCM
Check BCM input/output signal. Refer to
Is the inspection result normal?
YES
>> GO TO 1.
JPEIC0031GB
(+)
(-)
Voltage (Approx.)
Tire pressure warning check switch
Ground
Connector
terminal
M23
1
5.0V
BCM
Tire pressure warning check switch
Continuity
Connector
terminal
Connector
terminal
M123
149
M23
1
Existed
LOW TIRE PRESSURE WARNING LAMP BLINKS
WT-85
< SYMPTOM DIAGNOSIS >
C
D
F
G
H
I
J
K
L
M
A
B
WT
N
O
P
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.
WT-86
< SYMPTOM DIAGNOSIS >
TURN SIGNAL LAMP BLINKS
TURN SIGNAL LAMP BLINKS
Description
INFOID:0000000001687009
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:0000000001687010
1.
CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY
1.
Turn ignition switch “ON”.
2.
Check voltage between tire pressure warning check switch connector M23 terminal 1 and ground.
Is the reference voltage outputted?
YES
>> Repair or replace BCM circuit. Replace BCM. Refer to
BCS-79, "Removal and Installation"
.
NO
>> GO TO 2.
2.
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 terminal 149 and tire pressure warning check
switch connector M23 terminal 1. Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK SYMPTOM
Check again.
Does the turn signal lamp remain blinking?
YES
>> Check turn signal lamp operation. Refer to
BCS-21, "FLASHER : CONSULT-III Function (BCM -
NO
>> INSPECTION END
(+)
(-)
Voltage (Approx.)
Tire pressure warning check switch
Ground
Connector
Terminal
M23
1
5 V
BCM
Tire pressure warning check switch
Continuity
Connector
Terminal
Connector
Terminal
Existed
M123
149
M23
1
ID REGISTRATION CANNOT BE COMPLETED
WT-87
< SYMPTOM DIAGNOSIS >
C
D
F
G
H
I
J
K
L
M
A
B
WT
N
O
P
ID REGISTRATION CANNOT BE COMPLETED
Description
INFOID:0000000001687011
DESCRIPTION
The ID of the transmitter installed in each wheel cannot be registered in the tire pressure monitoring system.
Inspect the transmitter or the tire pressure monitoring system circuit.
Diagnosis Procedure
INFOID:0000000001687012
1.
CHECK ID REGISTRATION
1.
Perform ID registration of all transmitter. Refer to
WT-5, "ID REGISTRATION PROCEDURE : Special
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.
Does “DATA MONITOR” displayed the standardized value without turning low tire pressure warning lamp ON?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK TRANSMITTER
1.
Perform trouble diagnosis for transmitter. Refer to
2.
Perform ID registration of all transmitter. Refer to
WT-5, "ID REGISTRATION PROCEDURE : Special
Can ID registration of all transmitters be completed?
YES
>> INSPECTION END
NO
>> Repair or replace the malfunctioning connector. Repair or replace the malfunctioning part. GO TO
1.
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
information display.
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL
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