Installation; Rear Fog Lamp Description; Operation; Diagnosis And Testing - Rear Fog Lamp - Chrysler Vehicle User Manual

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FOG LAMP (Continued)

INSTALLATION

CAUTION: Do not touch the bulb glass with fingers
or other oily surfaces. Reduced bulb life will result.
(1) Connect the electrical connector.
(2) Position the bulb/element in the reflector.
(3) Engage the bulb retainer.
(4) Position the bezel reflector assembly in the
lamp housing.
(5) Install the screws that attach the bezel reflec-
tor assembly to the lamp housing.
(6) Connect the battery negative cable.
REAR FOG LAMP
DESCRIPTION
Some vehicles are equipped with a rear fog lamp.
The lamp can be found mounted to the rear bumper
assembly. The rear fog lamp utilizes a red lens with a
clear bulb for brightness, and an illuminated indica-
tor in the instrument cluster.
Rear fog lamp(s) are standard equipment in certain
parts of the world where excessive fog is experienced
on a regular basis.

OPERATION

Battery positive voltage is supplied to the left mul-
tifunction switch. With the headlamp switch in the
on position, battery positive voltage is supplied to the
CONDITION
REAR FOG LAMP IS ON
WITH IGNITION KEY ON
REAR FOG LAMP BULB
BURNS OUT
FREQUENTLY
REAR FOG LAMP IS DIM
WITH ENGINE RUNNING
POSSIBLE CAUSES
1. Shorted multifunction switch.
2. Shorted steering column clock
spring.
3. Shorted fog lamp switch output
circuit
1. Charging system output too high.
2. Loose or corroded terminals or
splices in circuit.
1. Charging system output too low.
2. Poor lighting circuit ground.
3. High resistance in fog lamp circuit.
LAMPS/LIGHTING - EXTERIOR
rear fog lamp switch contacts within the multifunc-
tion switch. Pulling the headlamp switch knob out-
ward and then rotating the knob one detent
counterclockwise will activate the rear fog lamp and
illuminate the rear fog lamp indicator in the instru-
ment cluster. The rear fog lamps can only be acti-
vated when either the Low Beam or High Beam
headlamps are on. Refer to Wiring Diagrams for a
complete system schematic.

DIAGNOSIS AND TESTING - REAR FOG LAMP

Always begin any diagnosis by testing all of the
fuses and circuit breakers in the system. Refer to the
appropriate wiring information.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
1. Test and replace multifunction switch
2. Test and replace clock spring.
3. Repair short to voltage in fog lamp
switch output circuit.
1. Test and repair charging system.
2. Inspect and repair all connectors and
splices.
1. Test and repair charging system.
2. Test for voltage drop across ground
locations.
3. Test amperage draw of fog lamp circuit.
8L - 17
CORRECTION