Infiniti QX56 (Z62). Manual - part 870

LAN

MALFUNCTION AREA CHART

LAN-57

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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DTC/CIRCUIT DIAGNOSIS

MALFUNCTION AREA CHART

System Diagram

INFOID:0000000006220536

CAN Communication Circuit

INFOID:0000000006220537

MAIN LINE

BRANCH LINE

JSMIA0344GB

Malfunction area

Reference

Main line between ABS actuator and electric unit (control unit) 
and data link connector

LAN-60, "Diagnosis Procedure"

Main line between data link connector and air levelizer control 
module

LAN-61, "Diagnosis Procedure"

Main line between air levelizer control module and driver seat 
control unit (Without ICC system)

LAN-62, "Diagnosis Procedure"

Main line between driver seat control unit and automatic back 
door control module (With ICC system)

LAN-63, "Diagnosis Procedure"

LAN-58

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MALFUNCTION AREA CHART

SHORT CIRCUIT

ITS Communication Circuit

INFOID:0000000006220538

MAIN LINE

BRANCH LINE

Malfunction area

Reference

ECM branch line circuit

LAN-68, "Diagnosis Procedure"

Transfer control unit branch line circuit

LAN-69, "Diagnosis Procedure"

ABS actuator and electric unit (control unit) branch line circuit

LAN-70, "Diagnosis Procedure"

TCM branch line circuit

LAN-71, "Diagnosis Procedure"

Air bag diagnosis sensor unit branch line circuit

LAN-72, "Diagnosis Procedure"

AFS control unit branch line circuit

LAN-73, "Diagnosis Procedure"

AV control unit branch line circuit

LAN-74, "Diagnosis Procedure"

BCM branch line circuit

LAN-75, "Diagnosis Procedure"

CAN gateway branch line circuit (CAN communication circuit 1)

LAN-76, "Diagnosis Procedure"

CAN gateway branch line circuit (CAN communication circuit 2)

LAN-77, "Diagnosis Procedure"

Data link connector branch line circuit

LAN-78, "Diagnosis Procedure"

A/C auto amp. branch line circuit

LAN-79, "Diagnosis Procedure"

Combination meter branch line circuit

LAN-80, "Diagnosis Procedure"

Steering angle sensor branch line circuit

LAN-81, "Diagnosis Procedure"

Low tire pressure warning control unit branch line circuit

LAN-82, "Diagnosis Procedure"

IPDM E/R branch line circuit

LAN-83, "Diagnosis Procedure"

Driver seat control unit branch line circuit

LAN-84, "Diagnosis Procedure"

Pre-crash seat belt control unit (driver side) branch line circuit

LAN-85, "Diagnosis Procedure"

Air levelizer control module branch line circuit

LAN-86, "Diagnosis Procedure"

ADAS control unit branch line circuit

LAN-87, "Diagnosis Procedure"

Automatic back door control module branch line circuit

LAN-88, "Diagnosis Procedure"

Malfunction area

Reference

CAN communication circuit (Without ICC system)

LAN-94, "Diagnosis Procedure"

CAN communication circuit 1 (With ICC system)

LAN-96, "Diagnosis Procedure"

CAN communication circuit 2 (With ICC system)

LAN-98, "Diagnosis Procedure"

Malfunction area

Reference

Main line between side radar RH and side radar LH

LAN-64, "Diagnosis Procedure"

Main line between side radar LH and lane camera unit

LAN-65, "Diagnosis Procedure"

Main line between lane camera unit and accelerator pedal actu-
ator

LAN-67, "Diagnosis Procedure"

Malfunction area

Reference

Side radar RH branch line circuit

LAN-89, "Diagnosis Procedure"

Side radar LH branch line circuit

LAN-90, "Diagnosis Procedure"

Lane camera unit branch line circuit

LAN-91, "Diagnosis Procedure"

Accelerator pedal actuator branch line circuit

LAN-92, "Diagnosis Procedure"

ICC sensor branch line circuit

LAN-93, "Diagnosis Procedure"

LAN

MALFUNCTION AREA CHART

LAN-59

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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SHORT CIRCUIT OR OPEN CIRCUIT

Malfunction area

Reference

ITS communication circuit

LAN-100, "Diagnosis Procedure"

LAN-60

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN ABS AND DLC CIRCUIT

MAIN LINE BETWEEN ABS AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000006220539

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 CONTINUITY (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 actuator and electric unit (control unit) and the harness

connector E107.

3.

CHECK HARNESS CONTINUITY (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 line 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