Infiniti M35/M45 Y50. Manual — part 860
TROUBLE DIAGNOSIS
LAN-89
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
Main Line Between ABS Actuator and Electric Unit (Control Unit) and ICC Sen-
sor Integrated Unit
NKS004H0
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 harness connectors.
–
ABS actuator and electric unit (control unit) harness connector
–
ICC sensor integrated unit harness connector
–
IPDM E/R harness connector
4.
Check continuity between the ABS actuator and electric unit (control unit) harness connector and the ICC
sensor integrated 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 ABS actuator and electric unit (con-
trol unit) and the ICC sensor integrated unit.
NG
>> Repair the main line between the ABS actuator and electric unit (control unit) and the ICC sensor
integrated unit.
ECM Branch Line Circuit
NKS004GA
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.
ABS actuator and electric unit (control unit)
harness connector
ICC sensor integrated unit
harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E30
35
E61
3
Yes
14
6
Yes
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M71
94
86
Approx. 108 – 132
LAN-90
[CAN]
TROUBLE DIAGNOSIS
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to
EC-858, "POWER SUPPLY AND GROUND CIRCUIT"
OK or NG
OK
>>
●
Present error: Replace the ECM. Refer to
EC-85, "Procedure After Replacing ECM"
(VQ
EC-787, "Procedure After Replacing ECM"
(VK engine).
●
Past error: Error was detected in the ECM branch line.
NG
>> Repair the power supply and the ground circuit.
AWD Control Unit Branch Line Circuit
NKS004GL
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).
–
AWD control unit connector
–
Harness connector F102
–
Harness connector M72
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AWD control unit.
2.
Check the resistance between the AWD control unit harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the AWD control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AWD control unit. Refer to
.
OK or NG
OK
>>
●
Present error: Replace the AWD control unit. Refer to
TF-39, "Removal and Installation"
●
Past error: Error was detected in the AWD control unit branch line.
NG
>> Repair the power supply and the ground circuit.
AWD control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F109
8
16
Approx. 54 – 66
TROUBLE DIAGNOSIS
LAN-91
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
AFS Control Unit Branch Line Circuit
NKS004H1
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).
–
AFS control unit connector
–
Harness connector F102
–
Harness connector M72
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AFS control unit.
2.
Check the resistance between the AFS control unit harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the AFS control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AFS control unit. Refer to
OK or NG
OK
>>
●
Present error: Replace the AFS control unit. Refer to
LT-192, "Removal and Installation of AFS
●
Past error: Error was detected in the AFS control unit branch line.
NG
>> Repair the power supply and the ground circuit.
BCM Branch Line Circuit
NKS004GD
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 BCM for damage, bend and loose connection (unit side and
connector side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
AFS control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F110
30
7
Approx. 54 – 66
LAN-92
[CAN]
TROUBLE DIAGNOSIS
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of BCM.
2.
Check the resistance between the BCM harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the BCM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to
BCS-14, "Check BCM Power Supply and
OK or NG
OK
>>
●
Present error: Replace the BCM. Refer to
BCS-15, "Removal and Installation of BCM"
●
Past error: Error was detected in the BCM branch line.
NG
>> Repair the power supply and the ground circuit.
LDW Camera Unit Branch Line Circuit
NKS004H2
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 LDW camera 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 LDW camera unit.
2.
Check the resistance between the LDW camera unit harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the LDW camera unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the LDW camera unit. Refer to
.
OK or NG
OK
>>
●
Present error: Replace the LDW camera unit. Refer to
DI-100, "Removal and Installation for
.
●
Past error: Error was detected in the LDW camera unit branch line.
NG
>> Repair the power supply and the ground circuit.
BCM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M1
39
40
Approx. 54 – 66
LDW camera unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M182
10
5
Approx. 54 – 66
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