Windows: Description and Operation

Door Module:

POWER WINDOW SYSTEM
The power window system includes the power window switches integral to the door module on each front door trim panel, the power window switches on each rear door trim panel of vehicles equipped with four doors, the circuit breaker in the Junction Block (JB), and the power window motors inside each door.

The power window system allows all of the door windows to be raised and lowered electrically by actuating a switch on the trim panel of each respective door. Additionally, a set of master switches on the driver side front door trim panel allows the driver to raise or lower each of the passenger door windows. A power window lockout switch on the driver side front door trim panel can prevent the passenger door windows from being operated, except from the master switches. The power window system receives battery current on a fused ignition switch output (run-accessory) circuit through a circuit breaker in the Junction Block (JB), so that the system will only operate when the ignition switch is in the ON or Accessory positions.

Refer to the owner's manual in the vehicle glove box for more information on the features, use and operation of the power window system.

POWER WINDOW MOTOR
A permanent magnet reversible power window motor is located in each door. The 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 power window regulator assembly must be replaced.

The power window motor moves the window regulator through an integral gearbox mechanism. A positive and negative battery connection to the two motor brushes will cause the motor to rotate in one direction. Reversing the connections through these same two brushes will cause the motor to rotate in the opposite direction.

POWER WINDOW SWITCH
The individual power windows are controlled by a two-way momentary switch mounted on the trim panel of the passenger side front door trim panel and, on four-door models, on each of the rear door trim panels. Two-way momentary master switches on the driver side front door trim panel control all of the power windows in the vehicle. The driver side front door trim panel also has a two-position power window lockout switch.

The driver side front door power window switch, master switches for each of the passenger door power windows, and the power window lockout switch are integral to the Driver Door Module (DDM). The passenger side front door power window switch is integral to the Passenger Door Module (PDM). The rear door power window switches are stand alone units.

Each power window switch, except the lockout switch, is illuminated by a Light-Emitting Diode (LED) when the ignition switch is turned to the ON position. However, when the power window lockout switch is placed in the Lock position, the LEDs for the locked-out passenger side front and, on four-door models, the rear passenger door power window switches are extinguished.

The front door power window switches and their lamps cannot be repaired and, if faulty or damaged, the entire door module must be replaced. The rear door power window switches and their lamps cannot be repaired but, if faulty or damaged, only the affected power window switch unit must be replaced.

Each power window switch controls its power window motor by switching battery current and ground between the two brush terminals of the power window motor. The passenger side front door and, on four-door models, both rear door power window switches receive their battery feed through the power window lockout switch or through the master switches in the Driver Door Module (DDM). Also, each of the individual power window switches receives its ground through the DDM. When the window lockout switch is placed in the Lock position, the individual power window switches become inoperative because they have no battery current available to them. However, the master switches are unaffected by the window lockout switch position.