Heated Glass - Operation

OPERATION

NOTE: ATC control shown. MTC control similar.





When equipped, the Electric Back Light (EBL) system is controlled by a momentary switch located in the mode control knob (4), on the A/C-heater control (1) in the instrument panel. When the rear window defogger switch is pressed to ON with the ignition switch in RUN, the switch sends a request signal over the Controller Area Network (CAN) bus to the Totally Integrated Power Module (TIPM) to energize the internal EBL high side driver. When energized, the EBL high side driver provides battery current to the rear window defogger grid lines. An amber indicator in the control knob will illuminate to indicate when the EBL system is ON.The grid lines heat the glass to help clear the rear window surface of fog or frost.

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 ten 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 five 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(R) Rear Window Defogger Repair Kit (Part Number 04549275) or equivalent Service and Repair.

The EBL control system is diagnosed using a scan tool.