Auto Reverse Operation
The system is composed of the power window master switch, the front passenger's power window switch, the driver's power window motor and the front passenger's power window motor.
The power window motor incorporates a pulser, which generates pulses during the motor's operation and sends the pulses to the power window control unit. As soon as the power window control unit detects no pulses from the pulser, the power window control unit makes the power window motor stop and reverse. If the window is more than halfway closed, it will reverse to the half open position. If the window is less than halfway closed, it will stop and reverse about 2 inches. This is to prevent pinching an obstacle during auto-up operation. The auto reverse operation is not active when the switch is held in the up position.