Power Window Main Switch

POWER SUPPLY AND GROUND CIRCUIT CHECK (KING CAB):_:POWER WINDOW MAIN SWITCH





Description
- BCM supplies power.
- It operates each power window motor via corresponding power window switch and makes window move up/down when main power window and door lock/unlock switch is operated.




Component Function Check

Main Power Window And Door Lock/Unlock Switch
1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH FUNCTION
Does power window motor operate with main power window and door lock/unlock switch operation?
Is the inspection result normal?
YES - Main power window and door lock/unlock switch power supply and ground circuit are OK.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
Regarding Wiring Diagram information, King Cab.
1. CHECK POWER SUPPLY CIRCUIT





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 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 (A) and main power window and door lock/unlock switch connector (B).






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 - GO TO 5
NO - Replace BCM. Service and Repair.
5. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH
Check main power window and door lock/unlock switch.
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.