Daytime Running Lamp Module Description; Operation; Diagnosis And Testing - Daytime Running Lamp System - Chrysler Vehicle User Manual

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COMBINATION FLASHER (Continued)
(4) Install and tighten the screws that secure the
lower steering column shroud to the upper shroud.
Tighten the screws to 2 N·m (18 in. lbs.).
(5) Move the tilt steering column to the fully
raised position and secure it in place by moving the
tilt release lever back to the locked position.
(6) Reinstall the steering column opening cover.
(Refer to 23 - BODY/INSTRUMENT PANEL/STEER-
ING COLUMN OPENING COVER - INSTALLA-
TION).
(7) Reconnect the battery negative cable.
DAYTIME RUNNING LAMP
MODULE
DESCRIPTION
The Daytime Running Lights (Headlamps) System
is installed on vehicles manufactured for sale in Can-
ada only. A separate module, mounted on the cowl,
controls the DRL.

OPERATION

Battery positive voltage is supplied to the Daytime
Running Lamp (DRL) module through a circuit
breaker and a fuse in the PDC. Ignition positive volt-
age is supplied to the DRL module through a fuse in
the fuse block. The DRL module also utilizes a VSS
input, high and low beam sense circuits and high
beam indicator driver. The DRL module is grounded
to the chassis. Once the vehicle reaches a speed of 3
CONDITION
DAYTIME RUNNING LAMPS (DRL)
DO NOT OPERATE
kph (2 mph) and travels more than 1 meter (3 feet)
with the headlamp switch in the off position, the
DRL module will activate the HIGH beams at a
reduced intensity (36% of full intensity). When the
headlamp switch is placed in the LOW beam position
the DRL will turn off. When the headlamp switch is
turned to the HIGH beam position, the high beams
will operate normally (full intensity) and the DRL
module will also illuminate the HIGH BEAM indica-
tor in the instrument cluster.
DIAGNOSIS AND TESTING - DAYTIME
RUNNING LAMP SYSTEM
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.
POSSIBLE CAUSES
1. Headlamp switch in the on
position.
2. Poor connection at DRL module.
3. Open battery positive voltage
circuit to DRL module
4. Open ignition positive circuit to
DLR module.
5. Headlamp circuit shorted to
ground.
6. Open or high resistance in DLR
module ground circuit.
7. Open VSS signal circuit.
8. Defective DRL module.
LAMPS/LIGHTING - EXTERIOR
CORRECTION
1. Turn the headlamp switch to the
off position.
2. Secure connector on DRL
module.
3. Test and repair open circuit.
4. Test and repair open circuit.
5. Test and repair headlamp circuit.
6. Test and repair ground circuit.
7. Test and repair VSS signal circuit.
8. Replace DRL module.
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