Nissan Maxima. Manual - part 811

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< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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 DLC AND HVAC CIRCUIT

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< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

C

D

E

F

G

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J

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B

A

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N

DTC/CIRCUIT DIAGNOSIS

MAIN LINE BETWEEN DLC AND HVAC CIRCUIT

Diagnosis Procedure

INFOID:0000000009990290

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

-

A/C auto amp.

4. Check the continuity between the data link connector and the A/C auto amp. harness 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 data link connector and the A/C auto

amp. 

NO

>> Repair the main line between the data link connector and the A/C auto amp.

Data link connector

A/C auto amp. harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M22

6

M37

1

Existed

14

2

Existed

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< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

MAIN LINE BETWEEN HVAC AND A-BAG CIRCUIT

MAIN LINE BETWEEN HVAC AND A-BAG CIRCUIT

Diagnosis Procedure

INFOID:0000000009990291

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.

-

A/C auto amp.

-

Harness connectors M1 and E30

4. Check the continuity between the A/C auto amp. harness connector and the harness 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 A/C auto amp. and the air bag diagnosis

sensor unit.

NO

>> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.

A/C auto amp. harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M37

1

M1

15G

Existed

2

8G

Existed

LAN

MAIN LINE BETWEEN A-BAG AND ABS CIRCUIT

LAN-59

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

MAIN LINE BETWEEN A-BAG AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000009990292

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 M1

-

Harness connector E30

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.

-

A/C auto amp.

-

Harness connectors M1 and E30

2. Check the continuity between the A/C auto amp. harness connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.

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 CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the

ABS actuator and electric unit (control unit). 

NO

>> Repair the main line between the harness connector E30 and the ABS actuator and electric unit

(control unit).

A/C auto amp. harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M37

1

M1

15G

Existed

2

8G

Existed

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E30

15G

E26

26

Existed

8G

15

Existed