Heated Element: Description and Operation

Circuit Description

The BCM controls the operation of the rear window defogger and outside mirror defogger through the defogger relay coil control. When the rear window defogger switch is depressed (ON) and the engine is running, the defogger relay coil is energized through the BCM for 20 minutes. Battery voltage is supplied to the rear window defogger through the defogger relay contacts.