Infiniti QX56 (Z62). Manual — part 904
LAN
PWBD BRANCH LINE CIRCUIT
LAN-193
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 3)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
PWBD BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256353
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).
-
Automatic back door control module
-
CAN gateway (With ICC system)
Is the inspection result normal?
YES (With ICC system)>>GO TO 2.
YES (Without ICC system)>>GO TO 3.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of CAN gateway.
2.
Check the continuity between the CAN gateway harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check the harness and repair the root cause (CAN communication circuit 2). Refer to
.
3.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Connect the connector of CAN gateway. (With ICC system)
2.
Disconnect the connector of automatic back door control module.
3.
Check the resistance between the automatic back door control module harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 4.
NO
>> Repair the automatic back door control module branch line.
4.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the automatic back door control module. Refer to
"AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the automatic back door control module. Refer to
YES (Past error)>>Error was detected in the automatic back door control module branch line.
NO
>> Repair the power supply and the ground circuit.
CAN gateway harness connector
Continuity
Connector No.
Terminal No.
M125
4
6
Existed
10
12
Existed
Automatic back door control module harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B26
7
6
Approx. 54 – 66
LAN-194
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 3)]
CAN COMMUNICATION CIRCUIT
CAN COMMUNICATION CIRCUIT
Diagnosis Procedure
INFOID:0000000006256359
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 circuit.
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.
146
151
Approx. 108 – 132
IPDM E/R
Resistance (
Ω
)
Terminal No.
27
26
Approx. 108 – 132
LAN
CAN COMMUNICATION CIRCUIT
LAN-195
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 3)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
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 circuit.
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-196
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
Diagnosis Procedure
INFOID:0000000006256366
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 E107
-
Harness connector M82
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.
-
ABS actuator and electric unit (control unit)
-
Harness connectors E107 and M82
2.
Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the
harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the ABS actuator and electric unit (control unit) and the harness
connector E107.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the 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 ABS actuator and electric unit (control
unit) and the data link connector.
NO
>> Repair the main line between the harness connector M82 and the data link connector.
ABS actuator and electric unit (control unit)
harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E36
41
E107
1
Existed
27
6
Existed
Harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M82
1
M4
6
Existed
6
14
Existed
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст