Chrysler PT Cruiser 2001 Service Manual Supplement page 462

PT
ELECTRICALLY HEATED SYSTEMS
DESCRIPTION AND OPERATION
REAR WINDOW DEFOGGER SYSTEM . . . . . . . . . 1
REAR WINDOW DEFOGGER SWITCH . . . . . . . . . 1
DIAGNOSIS AND TESTING
GRID LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REAR WINDOW DEFOGGER SWITCH . . . . . . . . . 2
DESCRIPTION AND OPERATION
REAR WINDOW DEFOGGER SYSTEM
DESCRIPTION
Fig. 1 Rear Window Defogger Switch Location
1 – ACCESSORY SWITCH BEZEL
ELECTRICALLY HEATED SYSTEMS
TABLE OF CONTENTS
page
REAR WINDOW DEFOGGER SYSTEM . . . . . . . . . 3
SERVICE PROCEDURES
GRID LINE AND TERMINAL REPAIR . . . . . . . . . . 4
REMOVAL AND INSTALLATION
REAR WINDOW DEFOGGER GRID LINES . . . . . . 4
REAR WINDOW DEFOGGER SWITCH . . . . . . . . . 4
The system consists of a rear glass with two verti-
cal bus bars and a series of electrically connected
grid lines fired on the inside surface. A control switch
and a timing circuit are combined into a single
assembly.
A push-button at the center of the instrument
panel, below the radio, turns the defroster ON or
OFF.
Circuit protection is provided by a cartridge fuse
located in the Power Distribution Center (PDC) for
the heated grid circuit, and by a fuse in the fuse
block for the control circuit.
OPERATION
When the switch is turned to the ON position, cur-
rent is directed to the rear defogger grid lines. The
heated grid lines heat the rear glass to clear the sur-
face of fog or frost. An amber light shows that the
defroster is on.
NOTE: The defroster turns off automatically after
10 minutes of operation. Each following activation
of the defroster will last for five minutes.
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 recom-
mended.
REAR WINDOW DEFOGGER SWITCH
DESCRIPTION
The rear window defogger switch is a control
switch and timing circuit integrated into a single
panel mounted assembly. The switch is located on the
instrument panel center, just below the radio (Fig. 1).
The rear window defogger switch and the rear win-
8N - 1
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