Infiniti G37 Coupe. Manual — part 926
MWI-50
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis Procedure
INFOID:0000000001606669
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:0000000001606670
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
Power source
Fuse No.
Battery
6
MWI
POWER SUPPLY AND GROUND CIRCUIT
MWI-51
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
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:0000000001696926
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
1.
Turn ignition switch OFF.
2.
Disconnect BCM connectors.
Ignition switch ACC or ON
19
Ignition switch ON or START
3
Power source
Fuse No.
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
MWI-52
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
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.
BCM (BODY CONTROL MODULE) : Special Repair Requirement
INFOID:0000000001696927
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to CONSULT-III operation manual NATS-IVIS/NVIS.
>> Work end.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000001696928
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible links 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
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Check voltage between IPDM E/R harness connector and ground.
Terminals
Voltage
(Approx.)
(+)
(
−
)
BCM
Ground
Connector
Terminal
M118
1
Battery voltage
M119
11
BCM
Ground
Continuity
Connector
Terminal
M119
13
Existed
Signal name
Fuses and fusible link No.
Battery power supply
C
50
51
MWI
POWER SUPPLY AND GROUND CIRCUIT
MWI-53
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK GROUND CIRCUIT
Check continuity between IPDM E/R harness connectors and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Terminals
Voltage
(Approx.)
(+)
(
−
)
IPDM E/R
Connector
Terminal
Ground
E4
1
Battery voltage
2
IPDM E/R
Ground
Continuity
Connector
Terminal
E5
12
Existed
E6
41
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