Infiniti G37 Coupe. Manual — part 862
LAN
M&A BRANCH LINE CIRCUIT
LAN-121
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
C
D
E
F
G
H
I
J
K
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B
A
O
P
N
M&A BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001679483
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the unified meter and A/C amp. for damage, bend and loose con-
nection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of unified meter and A/C amp.
2.
Check the resistance between the unified meter and A/C amp. harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the unified meter and A/C amp. branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to
METER AND A/C AMP. : Diagnosis Procedure"
.
Is the inspection result normal?
YES (Present error)>>Replace the unified meter and A/C amp. Refer to
YES (Past error)>>Error was detected in the unified meter and A/C amp. branch line.
NO
>> Repair the power supply and the ground circuit.
Unified meter and A/C amp. harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M67
56
72
Approx. 54 – 66
LAN-122
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
STRG BRANCH LINE CIRCUIT
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001679484
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection
(unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of steering angle sensor.
2.
Check the resistance between the steering angle sensor harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the steering angle sensor branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the steering angle sensor. Refer to
gram - BRAKE CONTROL SYSTEM -"
.
Is the inspection result normal?
YES (Present error)>>Replace the steering angle sensor. Refer to
.
YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO
>> Repair the power supply and the ground circuit.
Steering angle sensor harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M37
1
2
Approx. 54 – 66
LAN
ADP BRANCH LINE CIRCUIT
LAN-123
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001679485
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
Models with automatic drive positioner
•
Driver seat control unit
•
Harness connector B502
•
Harness connector B11
-
Models without automatic drive positioner
•
Driver seat control unit
•
Harness connector B501
•
Harness connector B10
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of driver seat control unit.
2.
Check the resistance between the driver seat control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the driver seat control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to
CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the driver seat control unit. Refer to
YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B503
3
19
Approx. 54 – 66
LAN-124
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
RAS BRANCH LINE CIRCUIT
RAS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001679486
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the 4WAS main control unit for damage, bend and loose connec-
tion (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of 4WAS main control unit.
2.
Check the resistance between the 4WAS main control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the 4WAS main control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the 4WAS main control unit. Refer to
Procedure (4WAS Main Control Unit)"
Is the inspection result normal?
YES (Present error)>>Replace the 4WAS main control unit. Refer to
YES (Past error)>>Error was detected in the 4WAS main control unit branch line.
NO
>> Repair the power supply and the ground circuit.
4WAS main control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B54
1
8
Approx. 54 – 66
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