Windows: Description and Operation

GLASS, FRAMES AND MECHANISMS

Component Location:

Windshield Glass
The windshield exterior mouldings are installed with the windshield glass. The windshield exterior mouldings cannot be replaced without removal of the windshield.

Window Regulator Control Switch
Power windows are standard on all models. On coupe models, only the front door window glass can be raised or lowered. The quarter window glass is fixed. On the convertible models, all four windows can be raised or lowered. On all models, the window regulator control switches are available only to the front seat passengers. There are no window regulator controls for the back seat passengers. Quarter window glass operations are controlled by the driver window regulator control switch.

Window, One-Touch Down
The LH window one-touch down feature is activated by momentarily pressing the driver window regulator control switch to the down position. This allows the front door window glass to move downward until it is fully lowered. Momentarily pressing the window regulator control switch while the window glass is moving downward will stop the front door window glass.

Window Glass, Door
The bottom of the door window glass is mounted on a slider bracket which is part of the front door window regulator. Door window glass bracket spacers provide attachment points for the door window glass and prevent direct contact between the slider bracket and the door window glass.

Window Glass, Quarter
The rear quarter window glasses on convertible models are driven by a window regulator motor and guide assembly.

Window Glass, Rear
On the coupe, the rear window upper garnish mouldings are installed with the rear window glass. The rear window upper garnish mouldings cannot be replaced without removing the rear window glass.

PRINCIPLES OF OPERATION

Power Window Control

NOTE: Battery power and ground must be removed before disconnecting the GEM connectors to avoid setting false DTCs.

The driver power window one-touch down operation is controlled by the generic electronic module (GEM). This feature functions only when the ignition switch is in the RUN or ACCY positions. The GEM determines ignition switch position by monitoring the key-in ignition, RUN/ACCY and RUN/START circuits. The one-touch down operation is requested of the GEM by momentarily pressing the driver window regulator control switch DOWN for 62 ms to 320 ms. The GEM uses the initial voltage input from the down switch to begin the one-touch down operation. If the voltage input was less than 320 ms, the GEM will maintain the voltage supply to the motor down circuit. The GEM will maintain the operation until:
- seven seconds expires.
- motor stall is detected by monitoring the current draw.
- a voltage input is received by the GEM on either the up or down switch circuits.

The ground for one-touch down operation does not pass through the GEM. The ground is supplied through the driver window regulator control switch as with normal operation. If the GEM continues to see voltage on the down circuit for more than 320 ms after initial activation the GEM will not effect operation. The down circuit through the GEM is a direct connection to the motor in its normal state. This allows the driver window regulator control switch to control the motor for normal operation.

The passenger window motors are hardwired directly to the window regulator control switches.