Power Window Main Switch

POWER SUPPLY AND GROUND CIRCUIT:_: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
Check power window motor operation with main power window and door lock/unlock switch.
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, [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 connector D7 terminal 5 and ground.

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 - 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
YES - Check main power window and door lock/unlock switch output signal (front power window switch
RH) GO TO 7
YES - Check main power window and door lock/unlock switch output signal (front power window motor
LH) GO TO 8
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 - GO TO 4
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.

Is the measurement value within the specification?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace BCM. Service and Repair, "Removal and Installation
".
5. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POWER WINDOW SWITCH LH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch connector and ground.

Is the measurement value within the specification?
YES - Check intermittent incident. Intermittent Incident.
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 POWER WINDOW SWITCH RH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch connector and ground.

Is the measurement value within the specification?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace main power window and door lock/unlock switch. Power Window Main Switch.
7. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (FRONT
POWER WINDOW SWITCH RH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch connector and ground.

Is the measurement value within the specification?
YES - Check intermittent incident. Intermittent Incident.
NO - Replace main power window and door lock/unlock switch. Power Window Main Switch.
8. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (FRONT
POWER WINDOW MOTOR LH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch connector and ground.

2. Check continuity between main power window and door lock/unlock switch (power window lock switch).
(Lock operation).

3. Check continuity between main power window and door lock/unlock switch (power window lock switch).
(Unlock operation).

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