Circuit Description
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
The global window up and down switches are inputs to the driver door module. The driver door module supplies the switch assembly with a battery positive reference voltage. When the switch is operated to the up or down direction the up or down switch signal circuit is closed to the reference voltage. In an active state the global window up or down switch signal circuit voltage is supplied to the driver door module through one of the 806 ohm resistors within the switch assembly. The resistors in the switch assembly enables the driver door module to recognize an invalid switch signal.