Encoder Circuit Check

1. Turn ignition switch ON.
2. Check signal between main power window and door lock/unlock switch connector D25 and ground with oscilloscope.

   Signal name	Terminals			Signal (Reference value)
   	(+)		(-)
   	Main power window and door lock/unlock switch connector	Terminal
   Encoder signal 1	D25	5	Ground	Refer to following signal
   Encoder signal 2		4

   Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES 

Check intermittent incident. Refer to INTERMITTENT INCIDENT .

NO 

GO TO STEP 2  .

1. Turn ignition switch ON.
2. Check voltage between front power window motor LH connector D9 and ground.

   Terminal			Voltage (Approx.)
   (+)		(-)
   Front power window motor LH connector	Terminal
   D9	4	Ground	10

Is the measurement value within the specification?

YES 

GO TO STEP 4  .

NO 

GO TO STEP 3. 

1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch and front power window motor LH.
3. Check continuity between main power window and door lock/unlock switch connector D25 and front power window motor LH connector D9.

   Main power window and door lock/unlock switch connector	Terminal	Front power window motor LH connector	Terminal	Continuity
   D25	14	D9	4	Yes

4. Check continuity between main power window and door lock/unlock switch connector D25 and ground.

   Main power window and door lock/unlock switch connector	Terminal	Ground	Continuity
   D25	14		No

Is the inspection result normal?

YES 

Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION . After that, refer to WORK PROCEDURE .

NO 

Repair or replace the harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect front power window motor LH.
3. Check continuity between front power window motor LH connector D9 and ground.

   Front power window motor LH connector	Terminal	Ground	Continuity
   D9	6		Yes

Is the inspection result normal?

YES 

GO TO STEP 6  .

NO 

GO TO STEP 5  .

1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between main power window and door lock/unlock switch connector D25 and front power window motor LH connector D9.

   Main power window and door lock/unlock switch connector	Terminal	Front power window motor LH connector	Terminal	Continuity
   D25	12	D9	6	Yes

Is the inspection result normal?

YES 

Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION . After that, refer to WORK PROCEDURE .

NO 

Repair or replace the harness or connectors.

1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between main power window and door lock/unlock switch connector D25 and front power window motor LH connector D9.

   Main power window and door lock/unlock switch connector	Terminal	Front power window motor LH connector	Terminal	Continuity
   D25	5	D9	3	Yes
   	4		5

3. Check continuity between main power window and door lock/unlock switch connector D25 and ground.

   Main power window and door lock/unlock switch connector	Terminal	Ground	Continuity
   D25	5		No
   	4

Is the inspection result normal?

YES 

Replace front power window motor LH. Refer to REMOVAL AND INSTALLATION . After that, refer to WORK PROCEDURE .

NO 

Repair or replace the harness or connectors.