Power Window Switch: Description and Operation

FRONT PASSENGER DOOR POWER WINDOW SWITCH
The front passenger door module supplies battery voltage to the two signal circuits, and a ground to the ground circuit, of the front passenger door window switch. One of the signal circuits is for an Up signal, the other is for a Down signal. When the window switch is operated, the normally open contacts for that function are closed to ground, battery voltage flows through the circuit and the switch, providing the front passenger door module with necessary signal input.

The front passenger door window can be operated in the express down mode from the front passenger door window switch. The switch is constructed in a way that allows the contacts of the two signal circuits to indicate the express down command. When the window switch lever is pulled to the second detente of the down position, first the down signal contacts are closed, then the up signal contacts are closed. The front passenger door module interprets this two contact signal as an express down request.

REAR PASSENGER DOOR POWER WINDOW SWITCHES
Each rear door module supplies battery voltage to the two signal circuits of its associated window switch. One signal circuit is for an Up signal, the other is for a Down signal. Each rear door module also supplies a ground circuit to its associated window switch. When the window switch is operated, the normally open contacts for that function are closed to ground, battery voltage flows through the circuits and the switch, providing the associated door module with the necessary signal.