Diagnosis Procedure

POWER SUPPLY AND GROUND CIRCUIT


POWER WINDOW MAIN SWITCH (KING CAB) POWER WINDOW MAIN SWITCH (KING CAB) : 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.




POWER SUPPLY AND GROUND CIRCUIT


POWER WINDOW MAIN SWITCH (KING CAB) : Diagnosis Procedure


Main Power Window And Door Lock/Unlock Switch Power Supply Circuit Check
1. CHECK POWER SUPPLY CIRCUIT





1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D7 terminal 5 and ground.

5 - Ground : Battery voltage

Is the measurement value within the specification?
YES - GO TO 2
NO - GO TO 3
2. 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 D7 terminal 14 and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair or replace harness.
3. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT





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






4. Check continuity between BCM and ground.





Is the inspection result normal?
YES - Replace main power window and door lock/unlock switch. Refer to 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 M20 terminal 68 and ground.

68 - Ground : Battery voltage

Is the measurement value within the specification?
YES - GO TO 5
NO - Replace BCM. Refer to Service and Repair.
5. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH
Check main power window and door lock/unlock switch. Refer to Component Inspection.
Is the inspection result normal?
YES - Check intermittent incident. Refer to Intermittent Incident.
NO - Replace main power window and door lock/unlock switch. Refer to Power Window Main Switch.