Nissan March K13. Manual - part 439

LAN-44

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 2)]

EPS BRANCH LINE CIRCUIT

EPS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000006044386

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-19, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

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

STC-34, "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.

M37

8

3

Approx. 54 – 66

LAN

M&A BRANCH LINE CIRCUIT

LAN-45

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 2)]

C

D

E

F

G

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J

K

L

B

A

O

P

N

M&A BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000006044387

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-40, "COMBINATION

METER : Diagnosis Procedure"

.

Is the inspection result normal?

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

MWI-51, "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.

M34

8

10

Approx. 54 – 66

LAN-46

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 2)]

BCM BRANCH LINE CIRCUIT

BCM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000006044389

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.

-

Models with Intelligent Key system

-

Models without Intelligent Key system

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 the following.
• Models with Intelligent Key system: 

BCS-51, "Diagnosis Procedure"

• Models without Intelligent Key system: 

BCS-93, "Diagnosis Procedure"

Is the inspection result normal?

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

• Models with Intelligent Key system: 

BCS-57, "Removal and Installation"

• Models without Intelligent Key system: 

BCS-99, "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.

M68

39

40

Approx. 108 – 132

BCM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M65

39

40

Approx. 108 – 132

LAN

CAN COMMUNICATION CIRCUIT

LAN-47

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 2)]

C

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CAN COMMUNICATION CIRCUIT

Diagnosis Procedure

INFOID:0000000006044390

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.

-

With L-Jetronic engine

-

With D-Jetronic engine

3.

Check the resistance between the BCM terminals.

Data link connector

Continuity

Connector No.

Terminal No.

M4

6

14

Not existed

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M4

6

Not existed

14

Not existed

ECM

Resistance (

Ω

)

Terminal No.

52

51

Approx. 108 – 132

ECM

Resistance (

Ω

)

Terminal No.

84

83

Approx. 108 – 132

BCM

Resistance (

Ω

)

Terminal No.

39

40

Approx. 108 – 132