Power Window Switch: Testing and Inspection

1. Remove the switch to be tested.

Front Window Switch:

Power Window Front Switch Test Part 1:

Power Window Front Switch Test Part 2:

2. Using an ohmmeter, Test front switch for continuity.
3. If the proper results are not obtained, replace the front window switch.

Rear Window Switch:

Power Window Rear Switch Test:

4. Test rear switch for continuity.
5. If the proper results are not obtained, replace the rear window switch.

The power window master switch has a Auto-Down feature on both front windows. 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 14 seconds.