Four Door Window Switches

Check the connections and terminals for tightness or damage.

Operate each switch in UP and DOWN positions and measure for voltage/ground at each motor pair of pins.

The express down circuitry is in the driver's window switch only. The driver's window should go all the way down when the switch is pressed momentarily to the down position. The window should stop if the driver's window switch is pulled in the up position during an express down operation.

Check for OPENS/SHORTS.

Repair as needed.