2009 INFINITI QX56 Factory Service Manual

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Page 2633 of 4171

INFINITI QX56 2009 Factory Service Manual LAN-64
< COMPONENT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN LASER AND ICC CIRCUIT
MAIN LINE BETWEEN LA
SER AND ICC CIRCUIT
Diagnosis ProcedureINFOID:0000000003776464
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1

Page 2634 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
MAIN LINE BETWEEN ICC AND ADP CIRCUITLAN-65
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN ICC AND ADP CIRCUIT
Diagnosis ProcedureINFOID:0000000003776465
INSPECTION

Page 2635 of 4171

INFINITI QX56 2009 Factory Service Manual LAN-66
< COMPONENT DIAGNOSIS >[CAN]
MAIN LINE BETWEE
N ADP AND AV CIRCUIT
MAIN LINE BETWEEN ADP AND AV CIRCUIT
Diagnosis ProcedureINFOID:0000000003776466
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Tur

Page 2636 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
MAIN LINE BETWEEN AV AND DLC CIRCUITLAN-67
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN AV AND DLC CIRCUIT
Diagnosis ProcedureINFOID:0000000003776467
INSPECTION PR

Page 2637 of 4171

INFINITI QX56 2009 Factory Service Manual LAN-68
< COMPONENT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN DLC AND M&A CIRCUIT
MAIN LINE BETWEEN
DLC AND M&A CIRCUIT
Diagnosis ProcedureINFOID:0000000003776468
INSPECTION PROCEDURE
1.CHECK HARNESS CONTI N

Page 2638 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
MAIN LINE BETWEEN M&A AND ABS CIRCUITLAN-69
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN
M&A AND ABS CIRCUIT
Diagnosis ProcedureINFOID:0000000003776469
INSPECTION

LAN
MAIN LINE BETWEEN M&A AND ABS CIRCUITLAN-69
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN
M&A AND ABS CIRCUIT
Diagnosis ProcedureINFOID:0000000003776469
INSPECTION PROCEDURE
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 M31
- Harness connector E152
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.
- Combination meter
- Harness connectors M31 and E152
2. Check the continuity between the combinati on meter harness connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the combination meter and the harness connector M31.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of ABS actuat or and electric unit (control unit).
2. Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECU
list” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the main line between the combination meter and the ABS actuator
and electric unit (control unit).
NO >> Repair the main line between the harness connec tor E152 and the ABS actuator and electric unit
(control unit).
Combination meter harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
M24 10
M31 31G
Existed
11 42GExisted
Harness connector ABS actuator and electric unit (control unit)
harness connector Continuity
Connector No. Terminal No.Connector No. Terminal No.
E152 31G
E125 11
E x i s t e d
42G 15Existed
Revision: December 20092009 QX56

Page 2639 of 4171

INFINITI QX56 2009 Factory Service Manual LAN-70
< COMPONENT DIAGNOSIS >[CAN]
ECM BRANCH LINE CIRCUIT
ECM BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000003776470
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the batt

Page 2640 of 4171

INFINITI QX56 2009 Factory Service Manual LAN
TCM BRANCH LINE CIRCUITLAN-71
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
TCM BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000003776471
1.CHECK CONNECTOR
1. Turn the ignition

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