Chrysler 300M Service Manual page 302

8G - 8 HEATED MIRRORS
HEATED MIRRORS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HEATED MIRRORS
DESCRIPTION
Electrically heated outside rear view mirrors are
optional equipment on this model. Heated mirrors
are available with Memory Mirrors and Rear Window
Defogger only. These mirrors feature an electric heat-
ing grid located behind the mirror glass of each
power operated outside rear view mirror. These heat-
ing grids consist of a single resistor wire routed in a
grid-like pattern and captured between two thin
sheets of plastic. When electrical current is passed
through the resistor wire, it produces enough heat
energy to clear the outside mirror glass of ice, snow
or fog. Battery current is directed to the outside mir-
ror heating grid only when the rear window defogger
switch is in the On position.
If the outside mirror heating grids and the rear
window heating grid are all inoperative, (Refer to 8 -
ELECTRICAL/HEATED GLASS - DIAGNOSIS AND
TESTING - WINDOW DEFOGGER). If the outside
mirror heating grids are inoperative, but the rear
window heating grid is operating as designed, (Refer
to 8 - ELECTRICAL/HEATED MIRRORS - DIAGNO-
SIS AND TESTING) for diagnosis of the outside mir-
ror heating grids.
The heating grid behind each outside mirror glass
cannot be repaired and, if faulty or damaged, the
entire power mirror unit must be replaced. Refer to
Power Mirrors for the procedures.
HEATED MIRRORS
TABLE OF CONTENTS
page
DIAGNOSIS AND TESTING - HEATED
DIAGNOSIS AND TESTING - HEATED MIRRORS
(1) Check the heated mirror fuse and repair as
necessary. This fuse is located in line with the Rear
Window Defogger Relay under the right rear panel
carpeting in the trunk.
(2) Using an ohmmeter, check Pin 1 of the mirror
motor harness connector for continuity to ground. If
OK, go to Step 3. If not OK, repair as necessary.
Refer to the appropriate wiring information for
proper Pin location.
(3) Activate the rear window defogger switch, use
a voltmeter and check Pin 3 for battery voltage.
8 - ELECTRICAL/HEATED GLASS/REAR WIN-
DOW DEFOGGER SWITCH - DIAGNOSIS AND
TESTING) If OK, go to step c. If not OK, repair as
necessary.
to the appropriate wiring information.
(4) Remove mirror glass and check wires. If wires
are OK, replace mirror glass. If not OK, repair as
necessary or replace mirror.
MIRRORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
(a) If OK, go to Step 4. If not OK, go to step b.
(b) Check rear window defogger switch. (Refer to
(c) If no voltage repair wire as necessary. Refer
LH
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