Windows Express Down Feature

All of the windows have the Express Down feature. This allows the windows to be fully opened by momentarily pressing the appropriate window switch to the second detente of the Down position. Both the Down contacts and the Express contacts of the switch are closed. If a passenger door window is operated from its locally mounted window switch, the door module associated with the switch interprets this two contact signal as an Express Down request. If the window is operated from the driver door, the DDSA interprets the two contact switch signal and sends it on, via the class 2 serial data circuit, to the appropriate door module.