Circuit/System Description

The power window system will operate any time the ignition is the ACC or RUN position. The main power window switch located in the console contains individual window switches for each of the power windows. All windows may be controlled up and down from the main power window switch. The individual rear passenger power window switches will only control the up and down operation of their respective power window.

Each power window contains a reversible power window motor. The direction the window travels is dependent upon the polarity of the supply voltage. By reversing polarity of the supply voltage the window motor will move up or down. Each power window motor is internally circuit breaker protected.

Battery voltage is supplied to the main power window switch through the accessory voltage supply circuit. The main power window switch also receives a constant ground source. The power window motor control circuits are connected to ground through the normally closed up and down contacts of the main power window switch. When the main power window switch is placed in the down position, the power window motor down control circuit is switched to 12 volts which is applied to the down side of the power window motor. Since the other side of the power window motor is connected to ground through the normally closed contacts of the up switch, the window travels down. By placing the power window switch in the up position, the polarity of the power window motor is reversed and the window travels up. The driver's window switch has an express-down feature that allows the window to be lowered completely without holding the switch. The switch is labeled AUTO. Press the bottom of the switch part way and release it and the driver's window will open a small amount. Press the switch all the way down and release it and the window will go completely down automatically.

To stop the window while it is lowering, press and release the top of the switch