Operation

OPERATION

The electric backlight (EBL) system is controlled by a momentary switch located in the A/C-heater control on the instrument panel (Figure 1). When the rear window defogger switch is pressed to the On position, the front control module (FCM) energizes the rear window defogger (EBL) relay and battery current is then directed through the relay and to the rear defogger grid lines and when equipped, to the heated side view mirrors. The grid lines heat the rear glass to help clear the rear window of fog or frost.


An amber indicator in the rear window defogger switch will illuminate to indicate when the EBL system is turned on. The FCM contains the EBL system control circuitry including the timer logic.


NOTE: The EBL system turns off automatically after 10 minutes of initial operation. Each following activation cycle of the EBL system will last 5 minutes.

The EBL system will be automatically turned off after an initial programmed time interval of about 10 minutes. After the initial time interval has expired, if the rear window defogger switch is turned on again during the same ignition cycle, the EBL system will automatically turn off after about 5 minutes. The EBL system will automatically shut off if the ignition switch is turned to the Off position, or it can be turned off manually by pressing the rear window defogger switch a second time.


Repair of the rear window defogger grid lines, bus bars, terminals or pigtail wires can be accomplished using the Mopar(R) Rear Window Defogger Repair Kit (Part Number 04549275).






Figure 1 A/C-Heater Control - Typical