Nissan Murano. Manual — part 938
LAN
CAN COMMUNICATION CIRCUIT
LAN-63
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
C
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CAN COMMUNICATION CIRCUIT
Diagnosis Procedure
INFOID:0000000009720862
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.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> 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.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> 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.
Is the measurement value within the specification?
YES
>> GO TO 5.
NO
>> 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 from interview with
customer)” are reproduced.
Data link connector
Continuity
Connector No.
Terminal No.
M4
6
14
Not existed
Data link connector
Ground
Continuity
Connector No.
Terminal No.
M4
6
Not existed
14
Not existed
ECM
Resistance (
Ω
)
Terminal No.
98
97
Approx. 108 – 132
IPDM E/R
Resistance (
Ω
)
Terminal No.
40
39
Approx. 108 – 132
LKIA0037E
LAN-64
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
CAN COMMUNICATION CIRCUIT
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 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 the unit whose connector was disconnected.
LAN
MAIN LINE BETWEEN AVM AND M&A CIRCUIT
LAN-65
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 1)]
C
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DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN AVM AND M&A CIRCUIT
Diagnosis Procedure
INFOID:0000000010092649
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 B11
-
Harness connector M77
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the following harness connectors.
-
Camera control unit
-
Harness connectors B11 and M77
2.
Check the continuity between the camera control unit harness connector and the harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the camera control unit and the harness connector B11.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of combination meter.
2.
Check the continuity between the harness connector and the combination meter harness connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the camera control unit and the combination
meter.
NO
>> Repair the main line between the harness connector M77 and the combination meter.
Camera control unit harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B92
27
B11
57
Existed
28
56
Existed
Harness connector
Combination meter harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M77
57
M34
21
Existed
56
22
Existed
LAN-66
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 1)]
MAIN LINE BETWEEN M&A AND DLC CIRCUIT
MAIN LINE BETWEEN M&A AND DLC CIRCUIT
Diagnosis Procedure
INFOID:0000000010092650
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.
-
ECM
-
Combination meter
4.
Check the continuity between the combination meter harness connector and the data link connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the combination meter and the data link con-
nector.
NO
>> Repair the main line between the combination meter and the data link connector.
Combination meter harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M34
21
M4
6
Existed
22
14
Existed
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