Infiniti G35 (V35). Manual — part 579
LAN-76
[CAN]
TROUBLE DIAGNOSIS
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.
OK or NG
OK
>> GO TO 3.
NG
>> 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
OK or NG
OK
>>
●
Present error: Replace the driver seat control unit. Refer to
SE-17, "Component Parts and Har-
●
Past error: Error was detected in the driver seat control unit branch line.
NG
>> Repair the power supply and the ground circuit.
RAS Control Unit Branch Line Circuit
NKS004II
INSPECTION PROCEDURE
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 RAS control unit for damage, bend and loose connection (unit
side and connector side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of RAS control unit.
2.
Check the resistance between the RAS control unit harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the RAS control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the RAS control unit. Refer to
OK or NG
OK
>>
●
Present error: Replace the RAS control unit. Refer to
STC-13, "Component Parts Location"
.
●
Past error: Error was detected in the RAS control unit branch line.
NG
>> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B352
3
19
Approx. 54 – 66
RAS control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B136
1
8
Approx. 54 – 66
TROUBLE DIAGNOSIS
LAN-77
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
IPDM E/R Branch Line Circuit
NKS004IL
INSPECTION PROCEDURE
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).
–
IPDM E/R connector
–
Harness connector E123
–
Harness connector B41
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of IPDM E/R.
2.
Check the resistance between the IPDM E/R harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the IPDM E/R branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the IPDM E/R. Refer to
OK or NG
OK
>>
●
Present error: Replace the IPDM E/R. Refer to
PG-27, "Removal and Installation of IPDM E/R"
.
●
Past error: Error was detected in the IPDM E/R branch line.
NG
>> Repair the power supply and the ground circuit.
CAN Communication Circuit
NKS004IM
INSPECTION PROCEDURE
1.
CONNECTOR INSPECTION
1.
Turn the ignition switch OFF
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect all the unit connectors on CAN communication system.
4.
Check terminals and connectors for damage, bend and loose connection.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
IPDM E/R harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E9
48
49
Approx. 108 – 132
LAN-78
[CAN]
TROUBLE DIAGNOSIS
2.
CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Check the harness and repair the root cause.
3.
CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector and the ground.
OK or NG
OK
>> GO TO 4.
NG
>> Check the harness and repair the root cause.
4.
CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
1.
Remove the ECM and the IPDM E/R.
2.
Check the resistance between the ECM terminals.
3.
Check the resistance between the IPDM E/R terminals.
OK or NG
OK
>> GO TO 5.
NG
>> Replace the ECM and/or the IPDM E/R.
5.
CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results of interview with cus-
tomer)” are reproduced.
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is
detected.
Data link connector
Continuity
Connector No.
Terminal No.
M8
6
14
No
Data link connector
Ground
Continuity
Connector No.
Terminal No.
M8
6
No
14
No
ECM
Resistance (
Ω
)
Terminal No.
94
86
Approx. 108 – 132
IPDM E/R
Resistance (
Ω
)
Terminal No.
48
49
Approx. 108 – 132
LKIA0037E
TROUBLE DIAGNOSIS
LAN-79
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
6.
CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
1.
Turn the ignition switch OFF
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect all the unit connectors on CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.
4.
Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace unit whose connector was disconnected.
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