HEATED GLASS - SERVICE INFORMATION
DESCRIPTION
CAUTION: Grid lines can be damaged or scraped off with sharp instruments. Care should be taken in cleaning glass or removing foreign materials, decals or stickers. Normal glass cleaning solvents or hot water used with rags or toweling is recommended.
The rear window defogger system, also known as electric backlight (EBL), consists of two vertical bus bars (1) linked by a series of grid lines (2) fired onto the inside surface of the rear window (3).
The EBL system is turned on or off by a switch and timing circuit integral to the A/C-heater control located at the center of the instrument panel.
Circuit protection for the EBL system is provided by two fuses. One fuse is located in the power distribution center (PDC) in the engine compartment and the other is located in the junction block (JB) inside the vehicle.
OPERATION
The electric backlight (EBL) system is controlled by a momentary switch (1) located in the A/C-heater control (2) on the instrument panel. When the rear window defogger switch is pressed to the On position, the A/C-heater control energizes the rear window defogger (EBL) relay and battery current is then directed through the relay and to the rear window defogger grid lines and the heated outside rear view mirrors. The grid lines heat the glass to help clear the rear window and outside mirror surfaces of fog or frost.
An amber indicator (3) in the rear window defogger switch will illuminate to indicate when the EBL system is turned on. The A/C-heater control 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 automatically turn off after a programmed time interval of about 10 minutes as long as the ignition switch is in RUN. After the initial time interval has expired, if the rear window defogger switch is pressed to ON again during the same ignition cycle, the EBL system will automatically turn off after about 5 minutes. The EBL system will also turn off if the ignition switch is turned to any position other than RUN or by manually 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® Rear Window Defogger Repair Kit (Part Number 04549275) or equivalent (refer to 8 - ELECTRICAL/HEATED GLASS/REAR WINDOW DEFOGGER GRID - STANDARD PROCEDURE - GRID LINE AND TERMINAL REPAIR).