Principles of Operation

PRINCIPLES OF OPERATION

Power Window Control

NOTE: Battery voltage and ground must be removed before disconnecting the smart junction box (SJB) connectors to avoid setting false diagnostic trouble codes (DTCs).

The power window one-touch up or down operations (front windows only) are controlled by the window motors. These features function only when the key is in the ON or ACC positions. The one-touch up or down operations are requested by pulling or pressing the window control switch up or down to the second detent. When the second detent of the window control switch is pulled/pressed, the auto circuit is grounded through the switch and the commanded up or down circuit is also grounded through the switch. Depending on which (up or down) circuit carries voltage, the window motor operates the window to the commanded one-touch up or down direction.

The window motor maintains operation until:
- the voltage at the window motor drops below 9 volts.
- a motor stall is detected by monitoring the current draw.

A momentary activation of the window control switch stops the one-touch up/down operation. Pulling or pressing the window control switches to the first detent operates the windows in a proportional mode. Each window motor has a dedicated auto circuit which provides ground to the window motor(s) for one-touch up/down operation.

For convertible, when the convertible top switch is operated (to raise or lower the convertible top), the SJB sends a signal to the window motors to activate a full down operation of all 4 windows.