Nissan Qashqai (2007-2010). Manual — part 1587

LAN

DLC BRANCH LINE CIRCUIT

LAN-373

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 23)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

DLC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001100758

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 data link connector for damage, bend and loose connection
(connector side and harness side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Check the CAN system type decision again.
YES (Past error)>>Error was detected in the data link connector branch line circuit.
NO

>> Repair the data link connector branch line.

Data link connector

Resistance (

Ω

)

Connector No.

Terminal No.

M4

6

14

Approx. 54 – 66

LAN-374

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 23)]

EPS BRANCH LINE CIRCUIT

EPS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001100759

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 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-8, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

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

ST-10, "Exploded View"

.

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

6

Approx. 54 – 66

LAN

I-KEY BRANCH LINE CIRCUIT

LAN-375

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 23)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

I-KEY BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001100760

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 Intelligent Key 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 Intelligent Key unit.

2.

Check the resistance between the Intelligent Key unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the Intelligent Key unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the Intelligent Key unit. Refer to

DLK-71, "INTELLIGENT

KEY UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the Intelligent Key unit. Refer to

SEC-11, "Component Parts Location"

.

YES (Past error)>>Error was detected in the Intelligent Key unit branch line.
NO

>> Repair the power supply and the ground circuit.

Intelligent Key unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M40

2

3

Approx. 54 – 66

LAN-376

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 23)]

STRG BRANCH LINE CIRCUIT

STRG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001100761

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 steering angle sensor 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 steering angle sensor.

2.

Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the steering angle sensor branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor. Refer to

BRC-155, "Wiring Dia-

gram - BRAKE CONTROL SYSTEM -"

.

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor. Refer to

BRC-179, "Exploded View"

.

YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO

>> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M30

4

8

Approx. 54 – 66