2011 INFINITI QX56 Factory Service Manual

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Page 3513 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
LASER BRANCH LINE CIRCUITLAN-93
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
LASER BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220569
1.CHECK CONNECTOR
1. Turn the ig

Page 3514 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-94
< DTC/CIRCUIT DIAGNOSIS >[CAN]
CAN COMMUNICATION CIRCUIT
CAN COMMUNICATION CIRCUIT
Diagnosis ProcedureINFOID:0000000006256269
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconn

Page 3515 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
CAN COMMUNICATION CIRCUITLAN-95
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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

Page 3516 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-96
< DTC/CIRCUIT DIAGNOSIS >[CAN]
CAN COMMUNICATION CIRCUIT 1
CAN COMMUNICATION CIRCUIT 1
Diagnosis ProcedureINFOID:0000000006220570
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Dis

Page 3517 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
CAN COMMUNICATION CIRCUIT 1LAN-97
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
5.CHECK SYMPTOM
Connect all the connectors. Check if the symptoms descr ibed in the “Symptom (Res

Page 3518 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-98
< DTC/CIRCUIT DIAGNOSIS >[CAN]
CAN COMMUNICATION CIRCUIT 2
CAN COMMUNICATION CIRCUIT 2
Diagnosis ProcedureINFOID:0000000006220571
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Dis

Page 3519 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
CAN COMMUNICATION CIRCUIT 2LAN-99
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
Non-reproduced>>Start the diagnosis again. Follow
the trouble diagnosis procedure when past error

Page 3520 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-100
< DTC/CIRCUIT DIAGNOSIS >[CAN]
ITS COMMUNICATION CIRCUIT
ITS COMMUNICATION CIRCUIT
Diagnosis ProcedureINFOID:0000000006220572
1.CHECK CAN DIAGNOSIS
Check the CAN diagnosis results from CONSU

LAN-100
< DTC/CIRCUIT DIAGNOSIS >[CAN]
ITS COMMUNICATION CIRCUIT
ITS COMMUNICATION CIRCUIT
Diagnosis ProcedureINFOID:0000000006220572
1.CHECK CAN DIAGNOSIS
Check the CAN diagnosis results from CONSULT-III to see that the CAN communication circuit 1 and CAN
communication circuit 2 have no malfunction.
NOTE:
For identification of CAN communication circuit 1, CAN communication circuit 2, and ITS communication cir-
cuit, refer to LAN-57, "
System Diagram".
Are the CAN communication 1 and CAN communication 2 circuits normal?
YES >> GO TO 2.
NO >> Check and repair CAN communication circuit 1 and/or CAN communication circuit 2.
2.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors fo r damage, bend and loose connection (unit side and con-
nector side).
- ADAS control unit
- Harness connector B63
- Harness connector B239
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the terminal and connector.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
- ADAS control unit
- ICC sensor
2. Check the continuity between the ADAS control unit harness connector and the ICC sensor harness con-
nector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the ADAS control unit branch line. (ITS communication circuit). Refer to LAN-57, "
System
Diagram".
4.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
1. Disconnect the following harness connectors.
- Side radar RH
- Side radar LH
- Lane camera unit
- Accelerator pedal actuator
2. Check the continuity between the ADAS control unit harness connector terminals.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Check the harness and repair the root cause.
ADAS control unit harness connector ICC sensor harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
B61 7
E65 3 Existed
86Existed
ADAS control unit harness connector Continuity
Connector No. Terminal No.
B61 7 8 Not existed
Revision: 2010 May2011 QX56

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