Heated Glass Control Module: Description and Operation

The GEM controls the heated backlight grid and heated mirrors by controlling the state of the heated backlight/mirror relay. When the heated backlight/mirror switch is pressed, the GEM will activate the heated backlight/mirror relay. When the heated backlight/mirror relay is active, both the heated backlight grid and heated mirror elements will be energized.

The GEM will deactivate the heated backlight/mirror relay when one of the following conditions is met:
^ The heated backlight/mirror switch is pressed when the feature is active.
^ Ignition switch state is changed from RUN to OFF/LOCK.
^ The 10 minute timing function is completed.
Feature Inputs:
^ Ignition switch RUN position (12V on both RUN and RUN/ACC inputs).
^ Heated backlight/mirror switch (momentary contact to ground when switch is pressed).

Feature Outputs:
^ Heated backlight/mirror relay control (grounded when activated, open circuit when deactivated).