Infiniti QX56 (Z62). Manual - part 885

LAN

CAN GATEWAY

LAN-117

< REMOVAL AND INSTALLATION >

[CAN GATEWAY]

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REMOVAL AND INSTALLATION

CAN GATEWAY

Removal and Installation

INFOID:0000000006220595

CAUTION:

Before replacing CAN gateway, perform “READ CONFIGURATION” to save or print current vehicle
specification. Refer to 

LAN-110, "Description"

.

REMOVAL

1.

Remove glove box assembly. Refer to 

IP-14, "Removal and Installation"

.

2.

Disconnect CAN gateway connector.

3.

Remove mounting screw to remove CAN gateway.

INSTALLATION

Install in the reverse order of removal.

CAUTION:

Be sure to perform “WRITE CONFIGURATION” when replacing CAN gateway. Refer to 

LAN-110,

"Description"

.

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 Procedure

INFOID: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 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

LAN

MAIN LINE BETWEEN DLC AND E-SUS CIRCUIT

LAN-119

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

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MAIN LINE BETWEEN DLC AND E-SUS CIRCUIT

Diagnosis Procedure

INFOID:0000000006256234

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 M19

-

Harness connector B2

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors M19 and B2.

2.

Check the continuity between the data link connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the data link connector and the harness connector M19.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the connector of air levelizer control module.

2.

Check the continuity between the harness connector and the air levelizer control module harness connec-
tor.

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 data link connector and the air levelizer

control module. 

NO

>> Repair the main line between the harness connector B2 and the air levelizer control module.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M4

6

M19

29

Existed

14

30

Existed

Harness connector

Air levelizer control module harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B2

29

B84

16

Existed

30

7

Existed

LAN-120

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

MAIN LINE BETWEEN E-SUS AND ADP CIRCUIT

MAIN LINE BETWEEN E-SUS AND ADP CIRCUIT

Diagnosis Procedure

INFOID:0000000006256235

1.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect the following harness connectors.

-

ECM

-

Air levelizer control module

-

Harness connectors B24 and B460

4.

Check the continuity between the air levelizer control module harness connector and the harness connec-
tor.

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 air levelizer control module and the driver

seat control unit. 

NO

>> Repair the main line between the air levelizer control module and the harness connector B24.

Air levelizer control module harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B84

16

B24

13

Existed

7

12

Existed