2011 INFINITI QX56 ABS

LAN-70
< DTC/CIRCUIT DIAGNOSIS >[CAN]
ABS BRANCH LINE CIRCUIT
ABS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220546
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 ABS act uator and electric unit (control 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 ABS actuat or and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ABS actuator and electric unit (control unit) branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AB S actuator and electric unit (control unit). Refer to
BRC-113, "
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-137, "Removal
and Installation".
YES (Past error)>>Error was detected in the ABS ac tuator and electric unit (control unit) branch line.
NO >> Repair the power supply and the ground circuit.
ABS actuator and electric unit (c ontrol unit) harness connector
Resistance (Ω)
Connector No. Terminal No.
E36 41 27 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN-118
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 1)]
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN
ABS AND DLC CIRCUIT
Diagnosis ProcedureINFOID:0000000006256233
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 CONTI NUITY (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 actuat or and electric unit (control unit) and the harness
connector E107.
3.CHECK HARNESS CONTI NUITY (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 li ne 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
Revision: 2010 May2011 QX56

LAN-122
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 1)]
ABS BRANCH LINE CIRCUIT
ABS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256242
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 ABS act uator and electric unit (control 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 ABS actuat or and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ABS actuator and electric unit (control unit) branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AB S actuator and electric unit (control unit). Refer to
BRC-113, "
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-137, "Removal
and Installation".
YES (Past error)>>Error was detected in the ABS ac tuator and electric unit (control unit) branch line.
NO >> Repair the power supply and the ground circuit.
ABS actuator and electric unit (c ontrol unit) harness connector
Resistance (Ω)
Connector No. Terminal No.
E36 41 27 Approx. 54 – 66
Revision: 2010 May2011 QX56

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.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 CONTI NUITY (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 actuat or and electric unit (control unit) and the harness
connector E107.
3.CHECK HARNESS CONTI NUITY (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 li ne 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
Revision: 2010 May2011 QX56

LAN
ABS BRANCH LINE CIRCUITLAN-145
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 2)]
C
D
E
F
G H
I
J
K L
B A
O P
N
ABS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256288
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the ABS act uator and electric unit (control 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 ABS actuat or and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ABS actuator and electric unit (control unit) branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the A BS actuator and electric unit (control unit). Refer to
BRC-113, "
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-137, "Removal
and Installation".
YES (Past error)>>Error was detect ed in the ABS actuator and electric unit (control unit) branch line.
NO >> Repair the power supply and the ground circuit.
ABS actuator and electric unit (control unit) harness connector Resistance (Ω)
Connector No. Terminal No.
E36 41 27 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
LAN-175
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 3)]
C
D
E
F
G H
I
J
K L
B A
O P
N
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
Diagnosis ProcedureINFOID:0000000006256326
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 (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 CONTI NUITY (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 actuat or and electric unit (control unit) and the harness
connector E107.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
Check the continuity between the harness connector and the data link connector.
Is the inspection result normal?
YES (Present error)>>Check CA N system type decision again.
YES (Past error)>>Error was detected in the main li ne 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
Revision: 2010 May2011 QX56

LAN-180
< DTC/CIRCUIT DIAGNOSIS >[CAN SYSTEM (TYPE 3)]
ABS BRANCH LINE CIRCUIT
ABS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256335
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 ABS act uator and electric unit (control 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 ABS actuat or and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ABS actuator and electric unit (control unit) branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AB S actuator and electric unit (control unit). Refer to
BRC-113, "
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-137, "Removal
and Installation".
YES (Past error)>>Error was detected in the ABS ac tuator and electric unit (control unit) branch line.
NO >> Repair the power supply and the ground circuit.
ABS actuator and electric unit (c ontrol unit) harness connector
Resistance (Ω)
Connector No. Terminal No.
E36 41 27 Approx. 54 – 66
Revision: 2010 May2011 QX56

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 ProcedureINFOID: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 CONTI NUITY (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 actuat or and electric unit (control unit) and the harness
connector E107.
3.CHECK HARNESS CONTI NUITY (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 li ne 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
Revision: 2010 May2011 QX56