Windows: Description and Operation

INTRODUCTION
The front door window lift motors are of the permanent magnet type. This information covers diagnosis and service of only the electrical components in the power window system.

Following are general descriptions of the major components in the power window system.

SYSTEM OPERATION
Circuit Breaker
An automatic resetting circuit breaker in the Micro Relay Bank 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. The Micro Relay Bank is located behind and above the glove box.

Power Window Motor
A battery positive and negative connection to either of 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. 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 repaired and, if faulty or damaged, the entire window regulator assembly must be replaced.