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 defog-
ger (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, when
equipped. 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 ten minutes of initial operation. Each follow-
ing activation cycle of the EBL system will last five
minutes.
The EBL system will be automatically turned off after an initial programmed time interval of about ten 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 five 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 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).
DIAGNOSIS AND TESTING
ELECTRIC BACKLIGHT (EBL) SYSTEM
NOTE: Illumination of the defogger switch indicator lamp does not necessary mean that electrical current is
reaching the rear glass heating grid lines.
NOTE: For circuit descriptions and diagrams of the rear window defogger system, refer to 8W - WIRING
DIAGRAM INFORMATION.
Operation of the electric backlight (EBL) system can be confirmed by the following:
8G - 2
HEATED GLASS - SERVICE INFORMATION
WK