Nissan Pathfinder. Manual - part 805

LAN

A-BAG BRANCH LINE CIRCUIT

LAN-173

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

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A-BAG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009175064

WARNING:

• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes

or more. (To discharge backup capacitor.)

• Never use unspecified tester or other measuring device.

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 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-39, "Work Flow"

.

Is the inspection result normal?

YES

>> Replace the main harness.

NO

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

LAN-174

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

AV BRANCH LINE CIRCUIT

AV BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009715250

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 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.

-

Mid audio system with BOSE audio system

-

Mid audio system without BOSE audio system

-

With premium 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.

• Mid audio without BOSE: 

AV-144, "AV CONTROL UNIT : Diagnosis Procedure"

• Mid audio with BOSE: 

AV-305, "AV CONTROL UNIT : Diagnosis Procedure"

• Premium audio with navigation: 

AV-549, "AV CONTROL UNIT : Diagnosis Procedure"

Is the inspection result normal?

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

• Mid audio without BOSE: 

AV-187, "Removal and Installation"

• Mid audio with BOSE: 

AV-365, "Removal and Installation"

• Premium audio with navigation: 

AV-611, "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.

M42

11

12

Approx. 54 – 66

AV control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M124

11

12

Approx. 54 – 66

AV control unit harness connector

Resistance (

Ω)

Connector No.

Terminal No.

M163

78

62

Approx. 54 – 66

LAN

DLC BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 1)

LAN-175

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

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DLC BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 1)

Diagnosis Procedure

INFOID:0000000009175066

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 CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit (CAN communication cir-

cuit 1 side).

NO

>> Repair the data link connector branch line (CAN communication circuit 1 side).

Data link connector

Resistance (

Ω)

Connector No.

Terminal No.

M22

6

14

Approx. 54 – 66

LAN-176

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

DLC BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 2)

DLC BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 2)

Diagnosis Procedure

INFOID:0000000009175067

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 CAN system type decision again.

YES (Past error)>>Error was detected in the data link connector branch line circuit (CAN communication cir-

cuit 2 side).

NO

>> Repair the data link connector branch line (CAN communication circuit 2 side).

Data link connector

Resistance (

Ω)

Connector No.

Terminal No.

M22

13

12

Approx. 54 – 66