2011 INFINITI QX56 Factory Service Manual

gas tank size jacking points child restraint tires cruise control fuse box

Page 3505 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
PSB BRANCH LINE CIRCUITLAN-85
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
PSB BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220561
1.CHECK CONNECTOR
1. Turn the igniti

LAN
PSB BRANCH LINE CIRCUITLAN-85
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
PSB BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220561
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).
- Pre-crash seat belt control unit (driver side)
- CAN gateway
Is the inspection result normal?
YES >> GO TO 2.
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.
2. Disconnect the connector of pre-crash seat belt control unit (driver side).
3. Check the resistance between the pre-crash seat bel t control unit (driver side) harness connector termi-
nals.
Is the measurement value within the specification?
YES >> GO TO 4.
NO >> Repair the pre-crash seat belt control unit (driver side) branch line.
4.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the pre- crash seat belt control unit (driver side). Refer to
SBC-52, "
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the seat belt pr e-tensioner retractor (LH side). Refer to SB-6, "SEAT BELT
RETRACTOR : Removal and Installation".
YES (Past error)>>Error was detected in the pre-cr ash seat belt control unit (driver side) 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
Pre-crash seat belt control unit (driver side) harness connector Resistance (Ω)
Connector No. Terminal No.
B9 14 4 Approx. 54 – 66
Revision: 2010 May2011 QX56

Page 3506 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-86
< DTC/CIRCUIT DIAGNOSIS >[CAN]
E-SUS BRANCH LINE CIRCUIT
E-SUS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220562
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect t

Page 3507 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
ICC BRANCH LINE CIRCUITLAN-87
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
ICC BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220563
1.CHECK CONNECTOR
1. Turn the igniti

Page 3508 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-88
< DTC/CIRCUIT DIAGNOSIS >[CAN]
PWBD BRANCH LINE CIRCUIT
PWBD BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220564
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the

LAN-88
< DTC/CIRCUIT DIAGNOSIS >[CAN]
PWBD BRANCH LINE CIRCUIT
PWBD BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220564
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 fo r 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 sy stem)>>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 CA N 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 ba ck 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 3509 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
RDR-R BRANCH LINE CIRCUITLAN-89
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
RDR-R BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220565
1.CHECK CONNECTOR
1. Turn the ig

Page 3510 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-90
< DTC/CIRCUIT DIAGNOSIS >[CAN]
RDR-L BRANCH LINE CIRCUIT
RDR-L BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220566
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect t

Page 3511 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN
LANE BRANCH LINE CIRCUITLAN-91
< DTC/CIRCUIT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
LANE BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220567
1.CHECK CONNECTOR
1. Turn the igni

Page 3512 of 5598

INFINITI QX56 2011 Factory Service Manual
LAN-92
< DTC/CIRCUIT DIAGNOSIS >[CAN]
APA BRANCH LINE CIRCUIT
APA BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220568
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the b

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