Infiniti G37 Coupe. Manual — part 1387
WCS-20
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis Procedure
INFOID:0000000001677413
1.
CHECK FUSE
Check for blown fuses.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between combination meter and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector.
3.
Check continuity between combination meter harness connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
UNIFIED METER AND A/C AMP.
UNIFIED METER AND A/C AMP. : Diagnosis Procedure
INFOID:0000000001677414
1.
CHECK FUSE
Check for blown fuses.
Power source
Fuse No.
Battery
11
Ignition switch ON or START
4
Terminals
Ignition switch
Voltage
(Approx.)
(+)
(–)
Combination meter
Connector
Terminals
M53
1
Ground
OFF
Battery voltage
21
ON
Combination meter
Ground
Continuity
Connector
Terminals
M53
5
Existed
15
22
WCS
POWER SUPPLY AND GROUND CIRCUIT
WCS-21
< COMPONENT DIAGNOSIS >
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Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between unified meter and A/C amp. harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between unified meter and A/C amp. and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect unified meter and A/C amp. connector.
3.
Check continuity between unified meter and A/C amp. harness connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure
INFOID:0000000001677418
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY CIRCUIT
Power source
Fuse No.
Battery
6
Ignition switch ACC or ON
19
Ignition switch ON or START
3
Terminals
Ignition switch
Voltage
(Approx.)
(+)
(–)
Unified meter and A/C amp.
Connector
Terminals
M67
54
Ground
OFF
Battery voltage
41
ACC
53
ON
Unified meter and A/C amp.
Ground
Continuity
Connector
Terminals
M67
55
Existed
71
Signal name
Fuse and fusible link No.
Battery power supply
K
10
WCS-22
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connectors.
3.
Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
M118
1
Battery voltage
M119
11
BCM
Ground
Continuity
Connector
Terminal
M119
13
Existed
WCS
METER BUZZER CIRCUIT
WCS-23
< COMPONENT DIAGNOSIS >
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METER BUZZER CIRCUIT
Description
INFOID:0000000001606827
• The buzzer for warning chime system is installed in the combination meter.
• The combination meter sounds the alarm buzzer based on the signals transmitted from various units.
Component Function Check
INFOID:0000000001606828
1.
CHECK OPERATION OF METER BUZZER
1.
Connect the CONSULT-III.
2.
Perform “LIGHT WARN ALM” in “ACTIVE TEST” of “BCM (BUZZER)”.
Does meter buzzer beep?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK UNIFIED METER AND A/C AMP. INPUT SIGNAL
Select the “Data Monitor” of “METER/M&A” and check the “BUZZER” monitor value.
Is the inspection result normal?
YES
>> Replace combination meter.
NO
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
Diagnosis Procedure
INFOID:0000000001606829
1.
CHECK POWER SUPPLY OF COMBINATION METER
Check power supply of combination meter. Refer to
WCS-20, "COMBINATION METER : Diagnosis Proce-
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair power supply circuit of combination meter.
2.
CHECK BATTERY POWER SUPPLY OF UNIFIED METER AND A/C AMP.
Check battery power supply of unified meter and A/C amp. Refer to
WCS-20, "UNIFIED METER AND A/C
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair power supply circuit of unified meter and A/C amp.
“BUZZER”
Under the condition of buzzer input
: On
Except above
: Off
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