Nissan Quest E52. Manual - part 871

LAN-198

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

CAN COMMUNICATION CIRCUIT

CAN COMMUNICATION CIRCUIT

Diagnosis Procedure

INFOID:0000000009979498

1.

CONNECTOR INSPECTION

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect all the unit connectors on CAN communication circuit.

4.

Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check the harness and repair the root cause.

3.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check the harness and repair the root cause.

4.

CHECK ECM AND IPDM E/R TERMINATION CIRCUIT

1.

Remove the ECM and the IPDM E/R.

2.

Check the resistance between the ECM terminals.

3.

Check the resistance between the IPDM E/R terminals.

Is the measurement value within the specification?

YES

>> GO TO 5.

NO

>> Replace the ECM and/or the IPDM E/R.

5.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced. 

Data link connector

Continuity

Connector No.

Terminal No.

M4

6

14

Not existed

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M4

6

Not existed

14

Not existed

ECM

Resistance (

Ω

)

Terminal No.

114

113

Approx. 108 – 132

IPDM E/R

Resistance (

Ω

)

Terminal No.

40

39

Approx. 108 – 132

LAN

CAN COMMUNICATION CIRCUIT

LAN-199

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Inspection result

Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is

detected.

6.

CHECK UNIT REPRODUCTION

Perform the reproduction test as per the following procedure for each unit.
1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect one of the unit connectors of CAN communication circuit.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.

4.

Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced. 
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms. 

Inspection result

Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.

LAN-200

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

BSW COMMUNICATION CIRCUIT

BSW COMMUNICATION CIRCUIT

Diagnosis Procedure

INFOID:0000000009979499

1.

CHECK CAN DIAGNOSIS

Check the CAN diagnosis results from CONSULT to see that the CAN communication circuit has no malfunc-
tion.

Is the CAN communication circuit normal?

YES

>> GO TO 2.

NO

>> Check and repair CAN communication circuit.

2.

CONNECTOR INSPECTION

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 (unit side and con-
nector side).

-

BSW control module

-

Side radar LH

-

Side radar RH

-

Harness connector M77

-

Harness connector B11

-

Harness connector B28

-

Harness connector B310

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the terminal and connector.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the following harness connectors.

-

BSW control module

-

Side radar RH

2.

Check the continuity between the BSW control module harness connector and the side radar RH harness
connector.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the BSW control module branch line (BSW communication circuit side).

4.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

1.

Disconnect the connector of side radar LH.

2.

Check the continuity between the BSW control module harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Check the harness and repair the root cause.

5.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the BSW control module harness connector and the ground.

BSW control module harness connector

Side radar RH harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M61

7

B317

4

Existed

8

3

Existed

BSW control module harness connector

Continuity

Connector No.

Terminal No.

M61

7

8

Not existed

LAN

BSW COMMUNICATION CIRCUIT

LAN-201

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 6)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Check the harness and repair the root cause.

6.

CHECK TERMINATION CIRCUIT

1.

Remove the BSW control module and the side radar RH.

2.

Check the resistance between the BSW control module terminals.

3.

Check the resistance between the side radar RH terminals.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace the BSW control module and/or the side radar RH.

7.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced. 

Inspection result

Reproduced>>Replace the side radar LH.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is

detected.

BSW control module harness connector

Ground

Continuity

Connector No.

Terminal No.

M61

7

Not existed

8

Not existed

BSW control module

Resistance (

Ω

)

Terminal No.

7

8

Approx. 108 – 132

Side radar RH

Resistance (

Ω

)

Terminal No.

4

3

Approx. 108 – 132