Infiniti M35/M45 Y50. Manual — part 863
TROUBLE DIAGNOSIS
LAN-101
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
ICC Sensor Integrated Unit Branch Line Circuit
NKS004H6
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 ICC sensor integrated 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.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of ICC sensor integrated unit.
2.
Check the resistance between the ICC sensor integrated unit harness connector terminals.
OK or NG
OK
>> GO TO 3.
NG
>> Repair the ICC sensor integrated unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ICC sensor integrated unit. Refer to
OK or NG
OK
>>
●
Present error: Replace the ICC sensor integrated unit. Refer to
●
Past error: Error was detected in the ICC sensor integrated unit branch line.
NG
>> Repair the power supply and the ground circuit.
IPDM E/R Branch Line Circuit
NKS004GN
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 IPDM E/R for damage, bend and loose connection (unit side
and connector side).
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminal and connector.
ICC sensor integrated unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E61
3
6
Approx. 54 – 66
LAN-102
[CAN]
TROUBLE DIAGNOSIS
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-31, "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
NKS004GO
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.
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.
IPDM E/R harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E9
49
50
Approx. 108 – 132
Data link connector
Continuity
Connector No.
Terminal No.
M60
6
14
No
TROUBLE DIAGNOSIS
LAN-103
[CAN]
C
D
E
F
G
H
I
J
L
M
A
B
LAN
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 or the IPDM E/R.
5.
CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced.
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is
detected.
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 one of the unit connectors of 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 of 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.
Data link connector
Ground
Continuity
Connector No.
Terminal No.
M60
6
No
14
No
ECM
Resistance (
Ω
)
Terminal No.
94
86
Approx. 108 – 132
IPDM E/R
Resistance (
Ω
)
Terminal No.
49
50
Approx. 108 – 132
LKIA0037E
LAN-104
[CAN]
TROUBLE DIAGNOSIS
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст