Power Window Motor

The BCM supplies fuse protected power to the window motors.

A permanent magnet reversible motor moves the window regulator through an integral gearbox mechanism. A positive and negative battery connection to the two motor terminals will cause the motor to rotate in one direction. Reversing the current through these same two connections will cause the motor to rotate in the opposite direction. Each individual motor is grounded through the master switch. In addition, each power window motor is equipped with an integral self-resetting circuit breaker to protect the motor from overloads. The power window motor and gearbox assembly cannot be adjusted or repaired. If damaged or ineffective, the entire unit must be replaced.

The electronic circuit inside the motors manages the anti-pinch safety function. It obtains information about the possible presence of an obstacle during window operation. The anti-pinch function is performed by a hall effect sensor that senses overloads in the window motor. The intervention threshold is set when the force of the obstacle encountered during window travel exceeds.875 kg (1.9 lbs).