Infiniti QX56 (JA60). Manual - part 667

LAN

MAIN LINE BETWEEN AV AND DLC CIRCUIT

LAN-67

< COMPONENT DIAGNOSIS >

[CAN]

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MAIN LINE BETWEEN AV AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000005146476

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

-

AV control unit

4. Check the continuity between the AV control unit harness connector and the data link 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 AV control unit and the data link connec-

tor.

NO

>> Repair the main line between the AV control unit and the data link connector.

AV control unit harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M45

96

M22

6

Existed

97

14

Existed

LAN-68

< COMPONENT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN DLC AND M&A CIRCUIT

MAIN LINE BETWEEN DLC AND M&A CIRCUIT

Diagnosis Procedure

INFOID:0000000005146477

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

-

Combination meter

4. Check the continuity between the data link connector and the combination meter 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 data link connector and the combination

meter.

NO

>> Repair the main line between the data link connector and the combination meter.

Data link connector

Combination meter harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M22

6

M24

10

Existed

14

11

Existed

LAN

MAIN LINE BETWEEN M&A AND ABS CIRCUIT

LAN-69

< COMPONENT DIAGNOSIS >

[CAN]

C

D

E

F

G

H

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J

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B

A

O

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MAIN LINE BETWEEN M&A AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000005156117

INSPECTION PROCEDURE

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 M31

-

Harness connector E152

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.

-

Combination meter

-

Harness connectors M31 and E152

2. Check the continuity between the combination 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 CONTINUITY (OPEN CIRCUIT)

1. Disconnect the connector of ABS actuator 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 connector 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

42G

Existed

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E152

31G

E125

11

Existed

42G

15

Existed

LAN-70

< COMPONENT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN M&A AND 4WD CIRCUIT

MAIN LINE BETWEEN M&A AND 4WD CIRCUIT

Diagnosis Procedure

INFOID:0000000005146478

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 M31

-

Harness connector E152

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.

-

Combination meter

-

Harness connectors M31 and E152

2. Check the continuity between the combination 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 CONTINUITY (OPEN CIRCUIT)

1. Disconnect the connector of transfer control unit.

2. Check the continuity between the harness connector and the transfer 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 transfer con-

trol unit.

NO

>> Repair the main line between the harness connector E152 and the transfer control unit.

Combination meter harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M24

10

M31

31G

Existed

11

42G

Existed

Harness connector

Transfer control unit harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E152

31G

E142

7

Existed

42G

8

Existed