2011 INFINITI QX56 Factory Service Manual

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Page 3553 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
ADP BRANCH LINE CIRCUITLAN-133
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
C
D
E
F
G H
I
J
K L
B A
O P
N
ADP BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256256
1.CHECK CONNECTOR
1

LAN
ADP BRANCH LINE CIRCUITLAN-133
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
C
D
E
F
G H
I
J
K L
B A
O P
N
ADP BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256256
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con- nector side).
- Driver seat control unit
- Harness connector B460
- Harness connector B24
- 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 CONTI NUITY (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 LAN-57,
"System Diagram".
3.CHECK HARNESS FOR OPEN CIRCUIT
1. Connect the connector of CAN gateway. (With ICC system)
2. Disconnect the connector of driver seat control unit.
3. Check the resistance between the driver s eat control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 4.
NO >> Repair the driver seat control unit branch line.
4.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to ADP-67, "
DRIVER SEAT
CONTROL UNIT : DiagnosisProcedure".
Is the inspection result normal?
YES (Present error)>>Replace the driver seat control unit. Refer to ADP-135, "Removal and Installation".
YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO >> Repair the power supply and the ground circuit.
CAN gateway harness connector Continuity
Connector No. Terminal No.
M125 46Existed
10 12 Existed
Driver seat control unit harness connector Resistance (Ω)
Connector No. Terminal No.
B451 1 17 Approx. 54 – 66
Revision: 2010 May2011 QX56

Page 3554 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-134
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 1)]
E-SUS BRANCH LINE CIRCUIT
E-SUS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256258
1.CHECK CONNECTOR
1. Turn the ignition switch OFF

Page 3555 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
PWBD BRANCH LINE CIRCUITLAN-135
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
C
D
E
F
G H
I
J
K L
B A
O P
N
PWBD BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256260
1.CHECK CONNECTOR

LAN
PWBD BRANCH LINE CIRCUITLAN-135
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
C
D
E
F
G H
I
J
K L
B A
O P
N
PWBD BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256260
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e 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 CONTI NUITY (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 LAN-57,
"System Diagram".
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 bac k 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 t he automatic back door control module. Refer to DLK-116,
"AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the automat ic back door control module. Refer to DLK-262, "Removal and
Installation".
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 46Existed
10 12 Existed
Automatic back door control module harness connector Resistance (Ω)
Connector No. Terminal No.
B26 7 6 Approx. 54 – 66
Revision: 2010 May2011 QX56

Page 3556 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-136
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 1)]
CAN COMMUNICATION CIRCUIT
CAN COMMUNICATION CIRCUIT
Diagnosis ProcedureINFOID:0000000006256274
1.CONNECTOR INSPECTION
1. Turn the ignition switc

Page 3557 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
CAN COMMUNICATION CIRCUITLAN-137
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
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. Fo

Page 3558 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-138
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 2)]
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN
ABS AND DLC CIRCUIT
Diagnosis ProcedureINFOID:0000000006256279
1.

Page 3559 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
MAIN LINE BETWEEN ADP AND PWBD CIRCUIT
LAN-139
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 2)]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN ADP AND PWBD CIRCUIT
Diagnosis ProcedureINFOID:00000

Page 3560 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-140
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 2)]
MAIN LINE BETWEEN RDR-R AND RDR-L CIRCUIT
MAIN LINE BETWEEN RDR-R AND RDR-L CIRCUIT
Diagnosis ProcedureINFOID:0000000006256283
1.CHECK CONNECTOR

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