Grand Caravan FWD V6-3.3L VIN 3 Flex Fuel (2002)
Heated Glass Element Switch: Description and Operation
Fig.3 HVAC Control Panel
The rear window defogger switch is integrated into the HVAC control panel assembly
A LED indicator will illuminate when the switch is activated. The switch energizes the HVAC control assembly when it requests the Front Control
Module (FCM) to activate the rear window defogger relay The relay controls the current to flow to the grids of the rear window defogger, heated power
side view mirrors and the heated windshield wiper de-icer. The defogger relay will be ON for approximately 10 minutes or until the control switch or
ignition is turned OFF.
