Power Window Switch: Testing and Inspection

WINDOW SWITCH





Figure 1
1. Remove the desired switch to be tested from the door trim panel. Driver's side (master) or passenger side.

2. Using an ohmmeter, Test driver door switch for continuity as described in.







* MUST TEST WITH B+ ON PIN 9 AND GROUND ON PIN 13 FOR CONTINUITY BETWEEN PINS 11 AND 6

3. If the result are not OK, replace the driver side window lift switch.

4. Test passenger door switch for continuity as described in (Figure 2).






Figure 2 Passenger Door Power Window Switch





5. If the results are not OK, replace the switch.


The power window master switch has a Auto-Down feature. The switch is equipped with two detent positions when actuating the power window OPEN. The first detent position allows the window to roll down and stop when the switch is released. The second detent position actuates an integral express roll down relay that rolls the window down after the switch is released. When the express down circuit senses stall current (window has reached end of down travel), the switch will turn current off to the motor. The AUTO feature can be cancelled by actuating the switch UP or DOWN while window is in motion. If the electronic circuit in the switch fails to detect a stall current, the auto down circuit will time out within 9 to 13 seconds.