BATTERY CONNECTORS INFINITI QX56 2011 Factory Service Manual

LAN
HVAC BRANCH LINE CIRCUITLAN-79
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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HVAC BRANCH
LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220555
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 A/C auto amp. 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 A/C auto amp.
2. Check the resistance between the A/C auto amp. harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the A/C auto amp. branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the A/C auto amp. Refer to HAC-110, "
A/C AUTO AMP. :
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the A/C auto amp. Refer to HAC-146, "Removal and Installation".
YES (Past error)>>Error was detect ed in the A/C auto amp. branch line.
NO >> Repair the power supply and the ground circuit.
A/C auto amp. harness connector Resistance (Ω)
Connector No. Terminal No.
M50 1 21 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN
STRG BRANCH LINE CIRCUITLAN-81
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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STRG BRANCH
LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220557
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 steer ing angle 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 steering angle sensor.
2. Check the resistance between the steering angle sensor harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the steering angle sensor branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the steering angle sensor. Refer to BRC-53, "
Wiring Dia-
gram".
Is the inspection result normal?
YES (Present error)>>Replace the steering angle sensor. Refer to BRC-139, "Removal and Installation".
YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO >> Repair the power supply and the ground circuit.
Steering angle sensor harness connector Resistance (Ω)
Connector No. Terminal No.
M30 5 2 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN-82
< DTC/CIRCUIT DIAGNOSIS >[CAN]
TPMS BRANCH LINE CIRCUIT
TPMS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220558
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 low tire pressure warning 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 low tire pressure warning control unit.
2. Check the resistance between the low tire pressu re warning control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lo w tire pressure warning control unit. Refer to WT-51,
"Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-65, "Removal and
Installation".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector Resistance (Ω)
Connector No. Terminal No.
M96 2 1 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN
IPDM-E BRANCH LINE CIRCUITLAN-83
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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IPDM-E BRANCH
LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220559
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).
-IPDME/R
- Harness connector E105
- Harness connector M77
- Harness connector M19 (Without ICC system)
- Harness connector B2 (Without ICC system)
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 IPDM E/R.
2. Check the resistance between the IPDM E/R harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the IPDM E/R branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the IPDM E/R. Refer to PCS-31, "
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the IPDM E/R. Refer to PCS-32, "Removal and Installation".
YES (Past error)>>Error was detected in the IPDM E/R branch line.
NO >> Repair the power supply and the ground circuit.
IPDM E/R harness connector Resistance (Ω)
Connector No. Terminal No.
E13 27 26 Approx. 108 – 132
Revision: 2010 May2011 QX56

LAN-84
< DTC/CIRCUIT DIAGNOSIS >[CAN]
ADP BRANCH LINE CIRCUIT
ADP BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220560
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).
- 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 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 driver seat control unit.
3. Check the resistance between the driver seat 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 driv er 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

LAN
PSB BRANCH LINE CIRCUITLAN-85
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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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

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 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).
- Air levelizer 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 air levelizer control module.
3. Check the resistance between the air leveliz er control module harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 4.
NO >> Repair the air levelizer control module branch line.
4.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the air levelizer control module. Refer to SCS-89,
"DiagnosisProcedure".
Is the inspection result normal?
YES (Present error)>>Replace the air levelizer control module. Refer to SCS-94, "Removal and Installation".
YES (Past error)>>Error was detected in t he air levelizer 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
Air levelizer control mo dule harness connector
Resistance (Ω)
Connector No. Terminal No.
B84 16 7 Approx. 54 – 66
Revision: 2010 May2011 QX56

LAN
ICC BRANCH LINE CIRCUITLAN-87
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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ICC BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220563
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).
- ADAS control unit
- 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 ADAS control unit.
3. Check the resistance between the ADAS control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 4.
NO >> Repair the ADAS control unit branch line.
4.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ADAS control unit. Refer to DAS-62, "
Diagnosis Proce-
dure".
Is the inspection result normal?
YES (Present error)>>Replace the ADAS control unit. Refer to DAS-63, "Removal and Installation".
YES (Past error)>>Error was detected in the ADAS 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
ADAS control unit harness connector Resistance (Ω)
Connector No. Terminal No.
B61 14 15 Approx. 54 – 66
Revision: 2010 May2011 QX56

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

LAN
RDR-R BRANCH LINE CIRCUITLAN-89
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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RDR-R BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220565
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 side radar RH 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 RIGHT/LEFT SWIT CHING SIGNAL CIRCUIT
Check the right/left switching signal circuit of the side radar RH. Refer to DAS-514, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the root cause.
3.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of side radar RH.
2. Check the resistance between the side radar RH harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 4.
NO >> Repair the side radar RH branch line.
4.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the side radar RH. Refer to DAS-513, "
SIDE RADAR RH :
Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the side radar RH. Refer to DAS-523, "Removal and Installation".
YES (Past error)>>Error was detected in the side radar RH branch line.
NO >> Repair the power supply and the ground circuit.
Side radar RH harness connector Resistance (Ω)
Connector No. Terminal No.
B243 4 3 Approx. 54 – 66
Revision: 2010 May2011 QX56