Nissan Leaf. Manual - part 931

LAN-186

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

STRG BRANCH LINE CIRCUIT

STRG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415440

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery 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-58, "Wiring Dia-

gram"

.

Is the inspection result normal?

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

BRC-165, "Removal and Installation"

.

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

5

2

Approx. 54 – 66

LAN

A-BAG BRANCH LINE CIRCUIT

LAN-187

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

C

D

E

F

G

H

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K

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A-BAG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415441

WARNING:

Always observe the following items for preventing accidental activation.

• Before servicing, turn power switch OFF, disconnect 12V battery negative terminal, and wait 3 min-

utes or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con-

nection (unit side and connector side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the main harness.

2.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit. Refer to 

SRC-34, "Work Flow"

.

Is the inspection result normal?

YES

>> Replace the main harness.

NO

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

LAN-188

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

AV BRANCH LINE CIRCUIT

AV BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415442

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the terminals and connectors of the AV 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 AV control unit.

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

-

Without BOSE audio system

-

With BOSE audio system

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the AV control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

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

• Without BOSE audio system: 

AV-291, "AV CONTROL UNIT : Diagnosis Procedure"

• With BOSE audio system: 

AV-453, "AV CONTROL UNIT : Diagnosis Procedure"

Is the inspection result normal?

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

• Without BOSE audio system: 

AV-318, "Removal and Installation"

• With BOSE audio system: 

AV-488, "Removal and Installation"

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

NO

>> Repair the power supply and the ground circuit.

AV control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M96

43

23

Approx. 54 – 66

AV control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M103

43

23

Approx. 54 – 66

LAN

AVM BRANCH LINE CIRCUIT

LAN-189

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

AVM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000010415443

1.

CHECK CONNECTOR

1. Turn the power switch OFF.

2. Disconnect the 12V battery cable from the negative terminal. Refer to 

LAN-26, "Precautions for Removing

Battery Terminal"

.

3. Check the terminals and connectors of the around view monitor 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 around view monitor control unit.

2. Check the resistance between the around view monitor control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the around view monitor control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the around view monitor control unit. Refer to 

AV-454,

"AROUND VIEW MONITOR CONTROL UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the around view monitor control unit. Refer to 

AV-502, "Removal and Installa-

tion"

.

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

NO

>> Repair the power supply and the ground circuit.

Around view monitor control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M32

12

10

Approx. 54 – 66