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Nissan Pathfinder. Manual - part 814

LAN

MAIN LINE BETWEEN ABS AND DLC CIRCUIT

LAN-209

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

MAIN LINE BETWEEN ABS AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000009175097

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (connector side

and harness side).

Harness connector E152

Harness connector M31

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the following harness connectors.

ABS actuator and electric unit (control unit)

Harness connectors E152 and M31.

2. Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the

harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair the main line between the ABS actuator and electric unit (control unit) and the harness

connector E152.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the ABS actuator and electric unit (control

unit) and the data link connector.

>> Repair the main line between the harness connector M31 and the data link connector.

ABS actuator and electric unit (control unit) harness

connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E125

E152

36G

Existed

35G

Existed

Harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M31

36G

M22

Existed

35G

Existed

LAN-210

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

MAIN LINE BETWEEN DLC AND 4WD CIRCUIT

MAIN LINE BETWEEN DLC AND 4WD CIRCUIT

Diagnosis Procedure

INFOID:0000000009175098

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (connector side

and harness side).

Harness connector M40

Harness connector B69

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the terminal and connector.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the harness connectors M40 and B69.

2. Check the continuity between the data link connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair the main line between the data link connector and the harness connector M40.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the connector of 4WD control unit.

2. Check the continuity between the harness connector and the 4WD control unit harness connector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.

YES (Past error)>>Error was detected in the main line between the data link connector and the 4WD control

unit.

>> Repair the main line between the harness connector B69 and the 4WD control unit.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M22

M40

89A

Existed

90A

Existed

Harness connector

4WD control unit harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B69

89A

B67

Existed

90A

Existed

LAN

ECM BRANCH LINE CIRCUIT

LAN-211

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

ECM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009175099

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 ECM for damage, bend and loose connection (unit side and

connector side).

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the terminal and connector.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of ECM.

2. Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

>> Repair the ECM branch line.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM. Refer to

EC-173, "Diagnosis Procedure"

Is the inspection result normal?

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

EC-466, "Removal and Installation"

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

>> Repair the power supply and the ground circuit.

ECM harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E16

114

113

Approx. 108 – 132

LAN-212

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

IPDM-E BRANCH LINE CIRCUIT

IPDM-E BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009175100

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 IPDM E/R for damage, bend and loose connection (unit side

and connector side).

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the terminal and connector.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of IPDM E/R.

2. Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

>> Repair the IPDM E/R branch line.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R. Refer to

PCS-31, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R. Refer to

PCS-32, "Removal and Installation"

YES (Past error)>>Error was detected in the IPDM E/R branch line.

>> Repair the power supply and the ground circuit.

IPDM E/R harness connector

Resistance (

Ω)

Connector No.

Terminal No.

E119

Approx. 54 – 66

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