Nissan Altima L32. Manual - part 885

LAN

MAIN LINE BETWEEN DLC AND ABS CIRCUIT

LAN-69

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

C

D

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F

G

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COMPONENT DIAGNOSIS

MAIN LINE BETWEEN DLC AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000004203901

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 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 harness connectors M1 and E30.

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 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 data link connector 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).

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M22

6

M1

15G

Existed

14

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

LAN-70

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

ECM BRANCH LINE CIRCUIT

ECM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000004471807

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 (unit side and con-

nector side).

-

ECM

-

Harness connector E30

-

Harness connector M1

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of ECM.

2. Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the ECM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM. Refer to the following.

• QR engine models for California: 

EC-144, "Diagnosis Procedure"

• QR engine models expect for California: 

EC-673, "Diagnosis Procedure"

• VQ engine models: 

EC-1175, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM. Refer to the following.

• QR engine models for California: 

EC-27, "ADDITIONAL SERVICE WHEN REPLACING CON-

TROL UNIT : Special Repair Requirement"

• QR engine models except for California: 

EC-563, "ADDITIONAL SERVICE WHEN REPLACING

CONTROL UNIT : Special Repair Requirement"

• VQ engine models: 

EC-1051, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT :

Special Repair Requirement"

YES (Past error)>>Error was detected in the ECM branch line.

NO

>> Repair the power supply and the ground circuit.

ECM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E10

98

97

Approx. 108 – 132

LAN

A-BAG BRANCH LINE CIRCUIT

LAN-71

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

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A-BAG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000004203903

1.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit. Refer to 

SRC-3, "Work Flow"

.

Is the inspection result normal?

YES

>> Replace the main harness.

NO

>> Replace parts whose air bag system has a malfunction.

LAN-72

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 3)]

BCM BRANCH LINE CIRCUIT

BCM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000004203904

INSPECTION PROCEDURE

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and

connector side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of BCM.

2. Check the resistance between the BCM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the BCM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM. Refer to 

BCS-42, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the BCM. Refer to 

BCS-96, "Removal and Installation"

.

YES (Past error)>>Error was detected in the BCM branch line.

NO

>> Repair the power supply and the ground circuit.

BCM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M19

79

78

Approx. 54 – 66