Infiniti G35 (V35) Sedan. Manual - part 851

 

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Infiniti G35 (V35) Sedan. Manual - part 851

 

 

LAN

CAN COMMUNICATION CIRCUIT

LAN-73

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

C

D

E

F

G

H

I

J

K

L

B

A

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N

CAN COMMUNICATION CIRCUIT

Diagnosis Procedure

INFOID:0000000000963980

1.

CONNECTOR INSPECTION

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect all the unit connectors on CAN communication system.

4.

Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check the harness and repair the root cause.

3.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check the harness and repair the root cause.

4.

CHECK ECM AND IPDM E/R TERMINATION CIRCUIT

1.

Remove the ECM and the IPDM E/R.

2.

Check the resistance between the ECM terminals.

3.

Check the resistance between the IPDM E/R terminals.

Is the measurement value within the specification?

YES

>> GO TO 5.

NO

>> Replace the ECM and/or the IPDM E/R.

5.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced. 

Data link connector

Continuity

Connector No.

Terminal No.

M24

6

14

Not existed

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M24

6

Not existed

14

Not existed

ECM

Resistance (

)

Terminal No.

114

113

Approx. 108 – 132

IPDM E/R

Resistance (

)

Terminal No.

40

39

Approx. 108 – 132

LKIA0037E

LAN-74

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

CAN COMMUNICATION CIRCUIT

Inspection result

Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is

detected.

6.

CHECK UNIT REPRODUCTION

Perform the reproduction test as per the following procedure for each unit.
1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect one of the unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.

4.

Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced. 
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms. 

Inspection result

Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.

LAN

MAIN LINE BETWEEN BCM AND DLC CIRCUIT

LAN-75

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

C

D

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B

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COMPONENT DIAGNOSIS

MAIN LINE BETWEEN BCM AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000000963981

INSPECTION PROCEDURE

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 harness connector

-

BCM harness connector

4.

Check the continuity between the BCM 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 BCM and the data link connector. 
NO

>> Repair the main line between the BCM and the data link connector.

BCM harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M122

91

M24

6

Existed

90

14

Existed

LAN-76

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

MAIN LINE BETWEEN DLC AND ADP CIRCUIT

MAIN LINE BETWEEN DLC AND ADP CIRCUIT

Diagnosis Procedure

INFOID:0000000000963982

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 M7

-

Harness connector B1

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 M7 and B1.

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 M7.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector terminals.

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 driver seat

control unit. 

NO

>> Repair the main line between the harness connector B1 and the driver seat control unit.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M24

6

M7

23

Existed

14

24

Existed

Connector No.

Terminal No.

Continuity

B1

23

25

Existed

24

26

Existed

 

 

 

 

 

 

 

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