Windows: Description and Operation

CAUTION: Disconnect the window switch connector before you start. You could unintentionally switch the window to "automatic down" while working in the driver's door with the power on. The moving glass could injure your arms, hands, or fingers.

Battery voltage is applied at all times to the power window relay contacts. Fuses 7, 8, 15, and 16 receive voltage through the power window relay and are controlled by the passenger's multiplex control unit.

Driver's Window
The driver's power window master switch is part of the door multiplex control unit. When you hold the driver's window switch in the UP or DOWN position, the door multiplex control unit applies power to the driver's window motor in the direction requested.

Auto Down
The driver's window is equipped with an AUTO DOWN feature. When you momentarily hold the driver's window switch in the DOWN position, the door multiplex control unit applies power to the driver's window motor. As the window moves down, the pulser in the driver's window motor sends a pulsing ground signal to the door multiplex control unit. When the window reaches the fully down position, the pulsing signal stops and the door multiplex control unit removes power from the motor.

Passenger Windows
All windows can be opened and closed at the driver's power window master switch. The passenger windows can be disabled with this master switch. When the main switch is open, the power window master relay deenergizes and removes ground from the front passenger's window switch, and the left and right rear power quarter window motor open and close relays.

Front Passenger's Window
The front passenger's window switch receives voltage through fuse 8. The window switch contains two relays and an up/down switch. When you press the UP/DOWN switch, the corresponding relay energizes and the window switch relay coils are grounded through the power window master relay switch. Voltage is applied to one side of the the window motor by the energized relay. The opposite power window motor terminal is grounded through the normally closed relay contacts in the deenergized power window switch relay. When you open or close the front passenger's window from the master power window switch, the door multiplex control unit sends a signal to the the driver's multiplex control unit through the BRN wire. The driver's multiplex control unit sends this request to the passenger's multiplex control unit and turns on the window motor by supplying power to the BLU or BLU/YEL control wires to the window switch.

Left Rear Power Quarter Window
The contacts of the left rear power quarter window motor open and close relays receive voltage through fuse 7. When the main switch is closed, ground is supplied to one side of the relay coils. When you press the left rear window OPEN/CLOSE switch in the power window master switch, the door multiplex control unit sends a signal to the driver's multiplex control unit through the BRN wire. The driver's multiplex control unit supplies power to the BLU (OPEN) or BLU/YEL (CLOSE) wire, the corresponding relay energizes. Voltage is applied to one side of the window motor by the energized relay. The opposite window motor terminal is grounded through the normally closed relay contacts in the other deenergized relay.

Right Rear Power Quarter Window
The contacts of the right rear power quarter window motor open and close relays receive voltage through fuse 16. When the main switch is closed, ground is supplied to one side of the relay coils. When you press the right rear window OPEN/CLOSE switch in the power window master switch, the door multiplex control unit sends a signal to the driver's multiplex control unit through the BRN wire. The driver's multiplex control unit sends the signal to the passenger's multiplex control unit through the PNK wire. The passenger 5 multiplex control unit supplies power to the BLU (OPEN) or BLU/YEL (CLOSE) wire, the corresponding relay energizes. Voltage is applied to one side of the window motor by the energized relay. The opposite window motor terminal is grounded through the normally closed relay contacts in the other deenergized relay.