System Operation

INTRODUCTION
Power windows are available as factory-installed optional equipment on this model. This covers diagnosis and service of only the electrical components in the power window system.

SYSTEM OPERATION
Power Window Switch
The power windows are controlled by two-way momentary switches mounted in a bezel on the trim panel of each front door. A second power window switch on the left side allows the driver to control the passenger side window. The power windows will only operate when the ignition switch is in the On position.

Both front door windows can be raised or lowered electrically by operating the power window switches. The switches control the battery and ground feeds to the power window motors.

The power window switches cannot be repaired and, if faulty or damaged, they must be replaced.

Power Window Motor
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 current through these same two connections will cause the motor to rotate in the opposite direction.

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 repaired and, if faulty or damaged, the entire motor assembly must be replaced.

Circuit Breaker
An automatic resetting circuit breaker in the fuseblock module is used to protect the power window system circuit. The circuit breaker can protect the system from a short circuit, or from an overload condition caused by an obstructed or stuck window glass or regulator.

The circuit breaker cannot be repaired and, if faulty, it must be replaced.