Nissan Quest E52. Manual - part 841

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< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

MAIN LINE BETWEEN EPS AND ABS CIRCUIT

DTC/CIRCUIT DIAGNOSIS

MAIN LINE BETWEEN EPS AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000009978216

1.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect the following harness connectors.

-

ECM

-

Power steering control module

-

ABS actuator and electric unit (control unit)

4.

Check the continuity between the power steering control module harness connector and the ABS actuator
and electric unit (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 power steering control module and the

ABS actuator and electric unit (control unit). 

NO

>> Repair the main line between the power steering control module and the ABS actuator and elec-

tric unit (control unit).

Power steering control module harness connector

ABS actuator and electric unit (control unit) harness 

connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E34

8

E36

23

Existed

7

21

Existed

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MAIN LINE BETWEEN ABS AND DLC CIRCUIT

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< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

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MAIN LINE BETWEEN ABS AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000009978217

1.

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 E105

-

Harness connector M11

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the following harness connectors.

-

ABS actuator and electric unit (control unit)

-

Harness connectors E105 and M11

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.

NO

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

connector E105.

3.

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. 

NO

>> Repair the main line between the harness connector M11 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.

E36

23

E105

14

Existed

21

15

Existed

Harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M11

14

M4

6

Existed

15

14

Existed

LAN-80

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

MAIN LINE BETWEEN DLC AND A-BAG CIRCUIT

Diagnosis Procedure

INFOID:0000000009978218

1.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect the following harness connectors.

With automatic slide door

-

Harness connector M79

-

Harness connector B225

Without automatic slide door

-

Harness connector M11

-

Harness connector E105

4.

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

-

With automatic slide door

-

Without automatic slide door

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 air bag diag-

nosis sensor unit. 

NO

>> Repair the main line between the data link connector and the air bag diagnosis sensor unit.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M4

6

M79

9

Existed

14

10

Existed

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M4

6

M11

41

Existed

14

40

Existed

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ECM BRANCH LINE CIRCUIT

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< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

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ECM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000009978219

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 ECM 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 ECM.

2.

Check the resistance between the ECM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the ECM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

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

EC-163, "Diagnosis Procedure"

.

Is the inspection result normal?

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

EC-460, "Removal and Installation"

.

YES (Past error)>>Error was detected in the ECM branch line.
NO

>> Repair the power supply and the ground circuit.

ECM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E16

114

113

Approx. 108 – 132