Window Switch Operation
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Voltage is applied to the window switches when the ignition switch is in the RUN or the START position. Voltage is applied to the window switches along the following path: Through the Power Window Relay. From there voltage is supplied to all of the switches. From the switch it proceeds to the corresponding motor. Ground path goes from the normally closed switch through the driver door master switch, to the G200 ground circuit.