Diagnosis Procedure

POWER SUPPLY AND GROUND CIRCUIT

POWER WINDOW MAIN SWITCH : Diagnosis Procedure

Regarding Wiring Diagram information, [1][2]Electrical Diagrams.

1. CHECK POWER SUPPLY CIRCUIT






1.Turn ignition switch ON.
2.Check voltage between main power window and door lock/
unlock switch connectors and ground.





Is the measurement value within the specification?
YES- GO TO 3
NO- GO TO 2

2. CHECK HARNESS CONTINUITY






1.Turn ignition switch OFF.
2.Disconnect BCM and main power window and door lock/unlock switch.
3.Check continuity between BCM connector and main power window and door lock/unlock switch connectors.





4.Check continuity between BCM connector (A) and ground.





Is the inspection result normal?
YES- GO TO 4
NO- Repair or replace harness.

3. CHECK GROUND CIRCUIT






1.Turn ignition switch OFF.
2.Disconnect main power window and door lock/unlock switch.
3.Check continuity between main power window and door lock/
unlock switch connector and ground.





Is the inspection result normal?
YES- Replace main power window and door lock/unlock switch. Power Window Main Switch.
NO- Repair or replace harness.

4. CHECK BCM OUTPUT SIGNAL






1.Connect BCM.
2.Turn ignition switch ON.
3.Check voltage between BCM connector and ground.





Is the measurement value within the specification?
YES- Check main power window and door lock/unlock switch output signal (rear power window switch
LH) GO TO 5
YES- Check main power window and door lock/unlock switch output signal (rear power window switch
RH) GO TO 6
NO- Replace BCM. Service and Repair.

5. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POWER WINDOW SWITCH LH)

1.Turn ignition switch ON.
2.Check voltage between main power window and door lock/
unlock switch connector and ground.

Is the measurement value within the specification?
YES- GO TO 7
NO- Replace main power window and door lock/unlock switch. Power Window Main Switch.

6. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POW-

ER WINDOW SWITCH RH)





1.Turn ignition switch ON.
2.Check voltage between main power window and door lock/unlock switch connector and ground.





Is the measurement value within the specification?
YES- GO TO 8
NO- Replace main power window and door lock/unlock switch. Power Window Main Switch.

7. CHECK HARNESS CONTINUITY (REAR POWER WINDOW SWITCH LH)






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





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





Is the inspection result normal?
YES- GO TO 9
NO- Repair or replace harness.

8. CHECK HARNESS CONTINUITY (REAR POWER WINDOW SWITCH RH)






1.Turn ignition switch OFF.
2.Disconnect rear power window switch RH.
3.Check continuity between main power window and door lock/unlock switch connector and rear power window switch RH connector.





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





Is the inspection result normal?
YES- GO TO 9
NO- Repair or replace harness.

9. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH

Check main power window and door lock/unlock switch.
Component Inspection.
Is the inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Replace main power window and door lock/unlock switch. Power Window Main Switch.