Infiniti G35 (V35). Manual — part 577
LAN-68
[CAN]
TROUBLE DIAGNOSIS
Main Line Between TCM and Intelligent Key Unit
NKS004IA
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 (connector side
and harness side).
–
Harness connector F102
–
Harness connector M72
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the following harness connectors.
–
A/T assembly connector
–
Harness connector F102 and M72
2.
Check the continuity between the A/T assembly harness connector and the harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the main line between the A/T assembly and the harness connector F102.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of Intelligent Key unit.
2.
Check the continuity between the harness connector and the Intelligent Key unit harness connector.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the TCM and the Intelligent Key unit.
NG
>> Repair the main line between the harness connector M72 and the Intelligent Key unit.
A/T assembly harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
F40
3
F102
24H
Yes
8
25H
Yes
Harness connector
Intelligent Key unit harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M72
24H
M75
2
Yes
25H
3
Yes
TROUBLE DIAGNOSIS
LAN-69
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Main Line Between VDC/TCS/ABS Control Unit and Data Link Connector
NKS004OO
INSPECTION PROCEDURE
1.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect the following connectors.
–
VDC/TCS/ABS control unit.
–
ECM
4.
Check the continuity between the VDC/TCS/ABS control unit harness connector and the data link connec-
tor.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the VDC/TCS/ABS control unit and the
data link connector.
NG
>> Repair the main line between the VDC/TCS/ABS control unit and the data link connector.
Main Line Between Data Link Connector and Driver Seat Control Unit
NKS004OP
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 (connector side
and harness side).
–
Harness connector M12
–
Harness connector B1
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connector M12 and B1.
2.
Check the continuity between the data link connector and the harness connector.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the main line between the data link connector and the harness connector M12.
VDC/TCS/ABS control unit harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M93
61
M8
6
Yes
63
14
Yes
Data link connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M8
6
M12
27J
Yes
14
26J
Yes
LAN-70
[CAN]
TROUBLE DIAGNOSIS
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connector B7 and B351.
2.
Check the continuity between the harness connectors.
OK or NG
OK
>>
●
Present error: Check the following items again.
–
Decision of CAN system type.
–
Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–
Procedure for detecting root cause.
●
Past error: Error was detected in the main line between the data link connector and the driver
seat control unit.
NG
>> Repair the main line between the harness connector B1 and B7.
ECM Branch Line Circuit
NKS004IB
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 ECM 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 ECM.
2.
Check the resistance between the ECM harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the ECM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to
OK or NG
OK
>>
●
Present error: Replace the ECM. Refer to
EC-77, "Procedure After Replacing ECM"
.
●
Past error: Error was detected in the ECM branch line.
NG
>> Repair the power supply and the ground circuit.
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B1
27J
B7
3
Yes
26J
19
Yes
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F108
94
86
Approx. 108 – 132
TROUBLE DIAGNOSIS
LAN-71
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
TCM Branch Line Circuit
NKS004OQ
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 A/T assembly 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 A/T assembly.
2.
Check the resistance between the A/T assembly harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the TCM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to
AT-172, "MAIN POWER SUPPLY AND
OK or NG
OK
>>
●
Present error: Replace the control valve with TCM. Refer to
●
Past error: Error was detected in the TCM branch line.
NG
>> Repair the power supply and the ground circuit.
VDC/TCS/ABS Control Unit Branch Line Circuit
NKS004IC
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 VDC/TCS/ABS control unit for damage, bend and loose con-
nection (unit side and connector side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
A/T assembly harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F40
3
8
Approx. 54 – 66
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