Encoder Circuit Check

1. Connect front power window motor LH.
2. Turn ignition switch ON.
3. Check signal between main power window and door lock/unlock switch connector D5 and ground with oscilloscope.

   Terminals			Signal (Reference value)
   (+)		(-)
   Main power window and door lock/unlock switch connector	Terminal
   D5	4	Ground	Refer to following signal
   	5

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Is the inspection result normal?

YES

Check intermittent incident. Refer to Intermittent Incident .

NO

GO TO 2.

1. Turn ignition switch ON.
2. Check voltage between front power window motor LH connector D8 and ground.

   Terminal			Voltage (Approx.)
   (+)		(-)
   Front power window motor LH connector	Terminal
   D8	2	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 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 D5 and front power window motor connector D8.

   Main power window and door lock/unlock switch connector	Terminal	Front power window motor LH connector	Terminal	Continuity
   D5	14	D8	2	Yes

4. Check continuity between main power window and door lock/unlock switch connector D5 and ground.

   Main power window and door lock/unlock switch connector	Terminal	Ground	Continuity
   D5	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 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 D8 and ground.

   Front power window motor LH connector	Terminal	Ground	Continuity
   D8	6		Yes

Is the inspection result normal?

YES

GO TO 6.

NO

GO TO 5.

1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between main power window and door lock/unlock switch connector D5 and front power window motor LH connector D8.

   Main power window and door lock/unlock switch connector	Terminal	Front power window motor LH connector	Terminal	Continuity
   D5	12	D8	6	Yes

Is the inspection result normal?

YES

Check main power window and door lock/unlock switch. Refer to Component Inspection .

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 D5 and front power window motor LH connector D8.

   Main power window and door lock/unlock switch connector	Terminal	Front power window motor LH connector	Terminal	Continuity
   D5	4	D8	5	Yes
   	5		4

3. Check continuity between main power window and door lock/unlock switch connector D5 and ground.

   Main power window and door lock/unlock switch connector	Terminal	Ground	Continuity
   D5	4		No
   	5

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 harness or connectors.