Windows: Description and Operation

With the Ignition Switch in "ON," voltage is applied through the POWER WINDOW CIRCUIT BREAKER to the LH Front Power Window/Door Lock Switch, RH Front Power Window Switch, LH Rear Remote Power Window Switch, RH Rear Remote Power Window Switch, LH Rear Power Window Switch, and RH Rear Power Window Switch. The LH Front Power Window/Door Lock Switch is permanently grounded to G202.

When the LH Front Window Switch is depressed, the DOWN/AUTO DOWN contacts close, allowing voltage to be applied to the LH Front Power Window Motor. The LH Front Power Window Motor is grounded through the normally closed I/P contacts of the LH Front Window Switch to G202. With both power and ground supplied to the motor, it begins to turn and open the window. The LH Front Power Window Motor will stop once the window is completely open, via an electronic circuit breaker (ECB) within the motor, or whenever the LH Front Window Switch is released, returning the DOWN/AUTO DOWN contacts to their normally grounded position. Closing the LH Front Window is accomplished by lifting the LH Front Window Switch, closing the I/P contacts, allowing voltage to be applied to the other side of the LH Front Power Window Motor. In this case, the LH Front Power Window Motor is grounded through the normally closed DOWN/AUTO DOWN contacts of the LH Front Window Switch to G202. With both power and ground supplied to the motor, it begins to turn and close the window. The LH Front Power Window Motor will stop once the window is completely closed, via an ECB within the motor, or whenever the LH Front Window switch is released, returning the I/P contacts to their normally grounded position.

The RH Front, LH Rear and RH Rear Windows can be operated by two separate switches. The RH Front Window Switch is located in the LH Front Power Window/Door Lock Switch, while the RH Front Power Window Switch is located on the RH Front Door. The LH and RH Rear Remote Power Window Switches are located in the Center Console, while the individual rear switches are located on each rear door. When either the RH Front, LH Rear Remote or RH Rear Remote Power Window Switch is depressed, the DOWN contacts close, allowing voltage to he applied through the appropriate Window Switch (located on the door) to the Window Motor. The Window Motor is grounded through the appropriate Window Switch (located on the door) and the normally closed UP contacts of the depressed switch to G202. With both power and ground supplied to the motor, it begins to turn and open the window. The Window Motor will stop once the window is completely open, via an ECB within the motor, or whenever the Window Switch is released, returning the DOWN contacts to their normally grounded position. Closing the RH Front, LH Rear or RH Rear Window is accomplished by lifting the appropriate Window Switch (in the LH Front Power Window/Door Lock Switch or Center Console), closing the I/P contacts, applying voltage through the appropriate Window Switch (located on the door) to the Window Motor. In this case, the Window Motor grounds through the appropriate Window Switch and the normally grounded DOWN contacts of the lifted switch to G202. With both power and ground supplied to the motor, it begins to turn and closes the window. The Window Motor will stop once the window is completely closed, via an ECB within the motor, or whenever the Window switch is released, returning the UP contacts to their normally grounded position.

The other method of operating the windows is through the Window Switch located on the appropriate door. When any one of these switches are depressed to the DOWN position, the DOWN contacts of that switch close, applying voltage directly through that switch to the appropriate Window Motor. The Window Motor grounds through the depressed switch and through the normally grounded UP contacts in the other switch to G202. With both power and ground supplied to the motor, it begins to turn and open the window. The motor will stop when the window is completely open, via the ECB, or whenever the Window Switch is released, returning the DOWN contacts to their normally grounded position. Closing the window is accomplished by lifting the appropriate Window Switch, closing the UP contacts of that switch, applying voltage directly through the lifted switch to the appropriate Window Motor. The Window Motor grounds through the lifted switch and through the normally grounded DOWN contacts in the other switch to G202. With both power and ground supplied to the motor, it begins to turn and close the window. The motor will stop when the window is completely closed, via the ECB, or whenever the Window Switch is released, returning the UP contacts to their normally grounded position.

The LH Front Power Window/Door Lock Switch also contains circuitry for the AUTO DOWN and WINDOW LOCK features. The AUTO DOWN feature allows the LH Front Window to open automatically to the fully open position. When the LH Front Window Switch is depressed to the AUTO DOWN position, the Auto Down Control circuitry holds the DOWN/AUTO DOWN contacts of the LH Front Power Window/Door Lock Switch closed. With these contacts closed, the LH Front Power Window Motor will operate in the same manner as described earlier. When the window is completely open, the ECB and the control circuitry force the DOWN/AUTO DOWN contacts open, returning them to their normally grounded position. The WINDOW LOCK feature allows the RH Front, LH Rear and RH Rear Windows to be locked out. When the Window Lock Switch is depressed, only the LH Front Window Switch in the LH Front Power Window/Door Lock Switch is operational.