Front Passenger's Power Window

The front passenger's power window motor incorporates a pulser which generates pulses during the motor's operation and sends the pulses to the front passenger's power window control unit. As soon as the power window control unit detects no pulses from the pulser, the front passenger's power window control unit makes the power window motor stop and reverse. This is to prevent pinching your hand or fingers during auto-up operation. The anti-pinch is not active when the switch is held in the up position.

Fig 1: Front Passenger's Power Window Operation Diagram

Courtesy of AMERICAN HONDA MOTOR CO., INC.