Grand Caravan FWD V6-201 3.3L VIN R MFI (1998)
Heated Glass Element: Description and Operation
INTRODUCTION
Rear Window Defogger
Heated Windshield Wiper De-icer
The electrically heated Rear Window Defogger, Heated Power Side View Mirrors, and Heated Windshield Wiper De-icer is available on NS
vehicles.
The Rear Window Defogger system consists of two vertical bus bars linked by a series of grid lines on the inside surface of the rear window. The
electrical circuit consists of the rear defogger switch in the HVAC and a relay with timer switch to turn OFF the system after ten minutes. The
main feed circuit is protected by fuse one (40 amp) in the Junction Block. The rear defogger switch and relay also activates the heated power side
view mirrors and heated windshield wiper de-icer. The HVAC rear defogger switch is protected by fuse ten (10 amp) in the Junction Block. The
heated mirror circuit is protected by fuse 12 (10 amp) in the junction block. The heated windshield wiper de-icer circuit is protected by fuse 21
(25 amp) in the Junction Block.
The Heated Windshield Wiper Deicer is also activated when the DEFROST mode is selected on the HVAC. In the DEFROST mode the rear
defogger relay/timer is bypassed, the heated windshield wiper de-icer will stay ON until the another mode is selected.
CAUTION: Since grid lines can be damaged or scraped off with sharp instruments, care should be taken in cleaning the glass or removing
foreign materials, decals or stickers. Normal glass cleaning solvents or hot water used with rags or toweling is recommended.
SYSTEM OPERATION
HVAC Mounted Switch
