Infiniti QX56 (Z62). Manual — part 912
LAN
LANE BRANCH LINE CIRCUIT
LAN-225
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
LANE BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256396
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 lane camera unit for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of lane camera unit.
2.
Check the resistance between the lane camera unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the lane camera unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lane camera unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the lane camera unit. Refer to
DAS-403, "Removal and Installation"
.
YES (Past error)>>Error was detected in the lane camera unit branch line.
NO
>> Repair the power supply and the ground circuit.
Lane camera unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
R8
4
8
Approx. 54 – 66
LAN-226
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
APA BRANCH LINE CIRCUIT
APA BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256397
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 accelerator pedal actuator for damage, bend and loose con-
nection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of accelerator pedal actuator.
2.
Check the resistance between the accelerator pedal actuator harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the accelerator pedal actuator branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the accelerator pedal actuator. Refer to
ERATOR PEDAL ACTUATOR : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the accelerator pedal assembly. Refer to
TANCE CONTROL ASSIST SYSTEM : Removal and Installation"
YES (Past error)>>Error was detected in the accelerator pedal actuator branch line.
NO
>> Repair the power supply and the ground circuit.
Accelerator pedal actuator harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E66
5
4
Approx. 54 – 66
LAN
LASER BRANCH LINE CIRCUIT
LAN-227
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
LASER BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256398
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 for damage, bend and loose connection (unit side
and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of ICC sensor.
2.
Check the resistance between the ICC sensor harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ICC sensor branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ICC sensor. Refer to
CCS-158, "ICC SENSOR : Diagno-
Is the inspection result normal?
YES (Present error)>>Replace the ICC sensor. Refer to
CCS-176, "Removal and Installation"
YES (Past error)>>Error was detected in the ICC sensor branch line.
NO
>> Repair the power supply and the ground circuit.
ICC sensor harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E65
3
6
Approx. 108 – 132
LAN-228
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 4)]
CAN COMMUNICATION CIRCUIT 1
CAN COMMUNICATION CIRCUIT 1
Diagnosis Procedure
INFOID:0000000006256400
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 1.
NOTE:
For identification of CAN communication circuit 1, CAN communication circuit 2, and ITS communication
circuit, refer to
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.
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
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