Nissan Leaf. Manual - part 1031

PWC-42

< DTC/CIRCUIT DIAGNOSIS >

ENCODER CIRCUIT

ENCODER CIRCUIT

Diagnosis Procedure

INFOID:0000000010119958

Regarding Wiring Diagram information, refer to 

PWC-16, "Wiring Diagram"

.

1.

CHECK ENCODER PULSE SIGNAL

1. Turn power switch ON.

2. Check signal between main power window and door lock/unlock switch harness connector and ground

with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK ENCODER SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect main power window and door lock/unlock switch connector and front power window motor LH

connector.

3. Check continuity between main power window and door lock/unlock switch harness connector and front

power window motor LH harness connector.

4. Check continuity between main power window and door lock/unlock switch harness connector and

ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

(+)

(-)

Signal

(Reference value)

Main power window and door lock/unlock switch

Connector

Terminal 

D35

4

Ground

Refer to following signal

5

JMKIA5210GB

Main power window and door lock/unlock switch

Front power window motor LH

Continuity

Connector

Terminal

Connector

Terminal

D35

4

D37

4

Yes

5

5

Main power window and door lock/unlock switch

Ground

Continuity

Connector

Terminal

D35

4

No

5

ENCODER CIRCUIT

PWC-43

< DTC/CIRCUIT DIAGNOSIS >

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3.

CHECK ENCODER POWER SUPPLY

1. Connect main power window and door lock/unlock switch connector.

2. Turn power switch ON.

3. Check voltage between front power window motor LH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK ENCODER POWER SUPPLY CIRCUIT

1. Turn power switch OFF.

2. Disconnect main power window and door lock/unlock switch connector.

3. Check continuity between main power window and door lock/unlock switch harness connector and front

power window motor LH harness connector.

4. Check continuity between main power window and door lock/unlock switch harness connector and

ground.

Is the inspection result normal?

YES

>> Replace main power window and door lock/unlock switch.

NO

>> Repair or replace harness.

5.

CHECK ENCODER GROUND CIRCUIT

1. Turn power switch OFF.

2. Check continuity between front power window motor LH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK ENCODER GROUND CIRCUIT

1. Disconnect main power window and door lock/unlock switch connector.

2. Check continuity between main power window and door lock/unlock switch harness connector and front

power window motor LH harness connector.

3. Check continuity between main power window and door lock/unlock switch harness connector and

ground.

(+)

(-)

Voltage

(Approx.)

Front power window motor LH

Connector

Terminal 

D37

1

Ground

Battery voltage

Main power window and door lock/unlock switch

Front power window motor LH

Continuity

Connector

Terminal

Connector

Terminal

D35

14

D37

1

Yes

Main power window and door lock/unlock switch

Ground

Continuity

Connector

Terminal

D35

14

No

Front power window motor LH

Ground

Continuity 

Connector

Terminal

D37

6

Yes

Main power window and door lock/unlock switch

Front power window motor LH

Continuity

Connector

Terminal

Connector

Terminal

D35

12

D37

6

Yes

PWC-44

< DTC/CIRCUIT DIAGNOSIS >

ENCODER CIRCUIT

Is the inspection result normal?

YES

>> Replace front power window motor LH.

NO

>> Repair or replace harness.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-53, "Intermittent Incident"

.

>> Inspection End.

Main power window and door lock/unlock switch

Ground

Continuity

Connector

Terminal

D35

12

No

DOOR SWITCH

PWC-45

< DTC/CIRCUIT DIAGNOSIS >

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DOOR SWITCH

Component Function Check

INFOID:0000000010503116

1.

CHECK FUNCTION

1. Select “DOOR LOCK” of “BCM” using CONSULT.

2. Select “DOOR SW-DR”, “DOOR SW-AS”, “DOOR SW-RL”, “DOOR SW-RR”, “DOOR SW-BK” in “Data

Monitor”.

3. Check that the function operates normally according to the following conditions:

Is the inspection result normal?

YES

>> Door switch is OK.

NO

>> Refer to 

PWC-45, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010503117

Regarding Wiring Diagram information, refer to 

DLK-44, "Wiring Diagram"

.

1.

CHECK DOOR SWITCH INPUT SIGNAL

1. Turn power switch OFF.

2. Disconnect malfunctioning door switch connector.

3. Check signal between malfunctioning door switch harness connector and ground using oscilloscope.

Is the inspection result normal?

YES-1 >> Back door: GO TO 3.

YES-2 >> Other door: GO TO 4.

NO

>> GO TO 2.

2.

CHECK DOOR SWITCH CIRCUIT

Monitor item

Condition

Status

DOOR SW-DR

Front door LH

Open

ON

Closed

OFF

DOOR SW-AS

Front door RH

Open

ON

Closed

OFF

DOOR SW-RL

Rear door LH

Open

ON

Closed

OFF

DOOR SW-RR

Rear door RH

Open

ON

Closed

OFF

DOOR SW-BK

Back door

Open

ON

Closed

OFF

(+)

(–)

Signal

(Reference value)

Door switch

Connector

Terminal

Front LH

B48

3

Ground

7.0 - 8.0 V

Front RH

B49

Rear LH

B71

Rear RH

B53

Back door

D562

PKIB4960J