Nissan Note E12. Manual - part 430

LAN

EPS BRANCH LINE CIRCUIT

LAN-81

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 505)]

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EPS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009554824

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 EPS control unit 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 EPS control unit.

2. Check the resistance between the EPS control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the EPS control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the EPS control unit. Refer to 

STC-18, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES (Present error)>>Replace the EPS control unit. Refer to 

STC-37, "Removal and Installation"

.

YES (Past error)>>Error was detected in the EPS control unit branch line.

NO

>> Repair the power supply and the ground circuit.

EPS control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M53

2

1

Approx. 54 – 66

LAN-82

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 505)]

M&A BRANCH LINE CIRCUIT

M&A BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009554825

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 combination meter 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 combination meter.

2. Check the resistance between the combination meter harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the combination meter branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter. Refer to 

MWI-39, "COMBINATION

METER : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the combination meter. Refer to 

MWI-48, "Removal and Installation"

.

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

NO

>> Repair the power supply and the ground circuit.

Combination meter harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M24

1

2

Approx. 54 – 66

LAN

BCM BRANCH LINE CIRCUIT

LAN-83

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 505)]

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BCM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009555071

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-61, "Diagnosis Procedure"

.

Is the inspection result normal?

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

BCS-67, "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.

M18

39

40

Approx. 108 – 132

LAN-84

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 505)]

CAN COMMUNICATION CIRCUIT

CAN COMMUNICATION CIRCUIT

Diagnosis Procedure

INFOID:0000000009644562

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 BCM TERMINATION CIRCUIT

1. Remove the ECM and the BCM.

2. Check the resistance between the ECM terminals.

3. Check the resistance between the BCM terminals.

Is the measurement value within the specification?

YES

>> GO TO 5.

NO

>> Replace the ECM and/or the BCM.

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.

M22

6

14

Not existed

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M22

6

Not existed

14

Not existed

ECM

Resistance (

Ω)

Terminal No.

84

83

Approx. 108 – 132

BCM

Resistance (

Ω)

Terminal No.

39

40

Approx. 108 – 132