Infiniti M35/M45 Y50. Manual — part 858
TROUBLE DIAGNOSIS
LAN-81
[CAN]
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Component Parts Location
NKS004G4
Harness Layout
NKS004G5
Refer to
1.
AWD control unit F109
2.
AFS control unit F110
3.
IPDM E/R E9
4.
BCM M1
5.
NAVI control unit M210: With
navigation system
AV control unit M210: Without
navigation system
6.
Unified meter and A/C amp. M65
7.
ICC sensor integrated unit E61
8.
ABS actuator and electric unit
(control unit) E30
9.
Intelligent Key unit M32
10. Data link connector M60
11. Low tire pressure warning con-
trol unit M19
12. Driver seat control unit B204
13. Steering angle sensor M47
14. TCM F42
15. Pre-crash seat belt control unit
B142
16. RAS control unit B476
17. LDW camera unit M182
18. ECM M71
PKID0344E
LAN-82
[CAN]
TROUBLE DIAGNOSIS
Malfunction Area Chart
NKS004G6
MAIN LINE
BRANCH LINE
SHORT CIRCUIT
Malfunction Area
Reference
Main line between TCM and data link connector
LAN-83, "Main Line Between TCM and Data Link Connector"
Main line between data link connector and pre-crash seat belt
control unit
LAN-84, "Main Line Between Data Link Connector and Pre-
crash Seat Belt Control Unit"
Main line between data link connector and RAS control unit
LAN-85, "Main Line Between Data Link Connector and RAS
Control Unit"
Main line between RAS control unit and pre-crash seat belt con-
trol unit
LAN-86, "Main Line Between RAS Control Unit and Pre-crash
Seat Belt Control Unit"
Main line between pre-crash seat belt control unit and driver
seat control unit
LAN-87, "Main Line Between Pre-crash Seat Belt Control Unit
and Driver Seat Control Unit"
Main line between driver seat control unit and ABS actuator and
electric unit (control unit)
Main line between ABS actuator and electric unit (control unit)
and ICC sensor integrated unit
Malfunction Area
Reference
ECM branch line circuit
LAN-89, "ECM Branch Line Circuit"
AWD control unit branch line circuit
LAN-90, "AWD Control Unit Branch Line Circuit"
AFS control unit branch line circuit
LAN-91, "AFS Control Unit Branch Line Circuit"
BCM branch line circuit
LAN-91, "BCM Branch Line Circuit"
LDW camera unit branch line circuit
LAN-92, "LDW Camera Unit Branch Line Circuit"
TCM branch line circuit
LAN-93, "TCM Branch Line Circuit"
NAVI control unit branch line circuit
LAN-93, "NAVI Control Unit Branch Line Circuit"
AV control unit branch line circuit
LAN-94, "AV Control Unit Branch Line Circuit"
Data link connector branch line circuit
LAN-95, "Data Link Connector Branch Line Circuit"
Intelligent Key unit branch line circuit
LAN-95, "Intelligent Key Unit Branch Line Circuit"
Unified meter and A/C amp. branch line circuit
LAN-96, "Unified Meter and A/C Amp. Branch Line Circuit"
Steering angle sensor branch line circuit
LAN-97, "Steering Angle Sensor Branch Line Circuit"
Low tire pressure warning control unit branch line circuit
LAN-97, "Low Tire Pressure Warning Control Unit Branch Line
Circuit"
RAS control unit branch line circuit
LAN-98, "RAS Control Unit Branch Line Circuit"
Pre-crash seat belt control unit branch line circuit
LAN-99, "Pre-Crash Seat Belt Control Unit Branch Line Circuit"
Driver seat control unit branch line circuit
LAN-99, "Driver Seat Control Unit Branch Line Circuit"
ABS actuator and electric unit (control unit) branch line circuit
LAN-100, "ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit"
ICC sensor integrated unit branch line circuit
LAN-101, "ICC Sensor Integrated Unit Branch Line Circuit"
IPDM E/R branch line circuit
LAN-101, "IPDM E/R Branch Line Circuit"
Malfunction Area
Reference
CAN communication circuit
TROUBLE DIAGNOSIS
LAN-83
[CAN]
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Main Line Between TCM and Data Link Connector
NKS004G7
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 M61
–
Harness connector M62
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.
–
Harness connectors F102 and M72
–
Harness connectors M61 and M62
2.
Check the continuity between harness connectors.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the main line between the harness connector M72 and M61.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the harness connector and the data link 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 data link connector.
NG
>> Repair the main line between the harness connector M62 and the data link connector.
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M72
43H
M61
1
Yes
42H
2
Yes
Harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M62
1
M60
6
Yes
2
14
Yes
LAN-84
[CAN]
TROUBLE DIAGNOSIS
Main Line Between Data Link Connector and Pre-crash Seat Belt Control Unit
NKS004GY
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 M66
–
Harness connector B418
–
Harness connector B437
–
Harness connector B67
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M66 and B418.
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 M66.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors B437 and B67.
2.
Check the continuity between harness connectors.
OK or NG
OK
>> GO TO 4.
NG
>> Replace the body No. 2 harness.
Data link connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M60
6
M66
38P
Yes
14
39P
Yes
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B418
38P
B437
1
Yes
39P
12
Yes
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