Chrysler Le Baron, Dodge Dynasty, Plymouth Acclaim. Manual — part 341
HEADLAMP TIME DELAY SYSTEM
SYSTEM OPERATION
The Body Controller controls the Headlamp Time
Delay system, if equipped.
OPERATION:
By turning off the ignition switch first then off the
headlamp switch, the Body Controller will allow the
headlamps to remain ON for 60 seconds before they
automatically turn off and the headlamp doors close.
DIAGNOSIS
Refer to the Pre-diagnostic Test section of the ap-
propriate Body Diagnostic Procedures service man-
ual.
Fig. 3 Lamp Outage Module—AC and AY-Body
Fig. 4 Daytime Running Lamp Module—Canada
Only
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LAMPS
Ä
CONCEALED HEADLAMPS
INDEX
page
page
Concealed Headlamp Motor—AC-Body
. . . . . . . . . . . . . . . . . . . . . 27
. . . . . . . . . . . . . . . . . . . . . . . 27
. . . . . . . . . . . . . . . . . 29
. . . . . . . . . . . . . . . . . 29
GENERAL INFORMATION
For proper operation of the Concealed Headlamp
System, refer to the Owner’s Manual provided with
the vehicle.
The Concealed Headlamps are controlled by the Body
Controller (Fig. 1). Refer to Group 8E, Instrument
Panel for service procedures. The Body Controller re-
ceives input information from the ignition switch, head-
lamp switch, and the headlamp dimmer switch.
The Body Controller also controls the headlamp doors
when the Passing Lights (manually flashing bright
lights) are used. With the headlamp switch turned off,
actuating the headlamp dimmer switch will signal the
Body Controller to open the headlamp doors. The oper-
ator then has two seconds to flash the bright lights be-
fore the Body Controller closes the headlamp doors.
Holding the headlamp dimmer switch in the engaged
position will signal the Body Controller to keep the
headlamp doors open until the dimmer switch is re-
leased. Actuating the headlamp dimmer switch with the
parking lamps ON signals the Body Controller to open
the headlamp doors and keep them open until the head-
lamp switch is turned off.
AY and AC vehicles use a single motor, centrally
located behind the radiator grille, and linked to the
headlamp doors by a torsion bar. Refer to Service
Procedures for more information.
The headlamp door drive motors are equipped with
a manual override hand wheel to open or close the
headlamp doors if a failure should occur or servicing
is required. Access to the handwheel can be gained
through a flap covered hole in the sight shield be-
hind the bumper fascia, and under the hood. Several
revolutions of the handwheel may be required to
move the headlamp doors.
DIAGNOSTIC PROCEDURES
Before diagnosing a problem with the headlamp
doors, check for possible collision damage, binding,
improperly installed assemblies, or freezing weather
conditions.
When diagnosing an electrical problem, refer to:
• The Concealed Headlamps Electrical Diagnosis
chart in this section.
• The Wiring Diagrams Manual.
• The Headlamp Doors System section of the appro-
priate Body Diagnostic Procedures Manual.
PROBLEM
One headlamp door is inoperative when the head-
lamp switch is ON and the ignition switch is in the
RUN position. The other headlamp door operates
normally.
AC OR AY-VEHICLE BODY CHECK:
• Headlamp door pivot and crank for seizure.
• Headlamp torsion bar sleeve or clip for excessive
wear or breakage.
• Headlamp door crank for missing or broken screw.
• Headlamp torsion bar for disengagement or break-
age.
PROBLEM
Headlamp door operates erratically.
CHECK:
• For freezing weather conditions.
• For excessive effort to move headlamp door pivots.
• For corrosion or improperly aligned components.
• For stripped motor reduction gears.
• For defective body controller. Refer to the Con-
cealed Headlamp Electrical Diagnosis chart in this
section. Also refer to the Wiring Diagrams Manual
and Body Diagnostic Procedures Manual.
Fig. 1 Body Controller
Ä
LAMPS
8L - 27
CONCEALED HEADLAMPS—ELECTRICAL DIAGNOSIS
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LAMPS
Ä
PROBLEM
Headlamp door or doors fit poorly, rattle, or bang
when coming open or closed.
CHECK:
• Headlamp door fascia mounting bracket or adjust-
able stops for improper alignment.
• Headlamp door pivot brackets or door/crank lateral
adjustment for improperly aligned collar.
• For missing or worn pivot bushings.
• For defective motor.
HEADLAMP DOOR—AC-BODY
REMOVAL (FIG. 2)
(1) Remove the grill. Refer to Group 23, Body.
(2) Remove the front bumper assembly. Refer to
Group 23, Body.
(3) Loosen and separate the grille opening panel
from the front fender on the side of the vehicle af-
fected. Refer to Group 23, Body.
(4) Compress torsion bar retainer clip tabs to-
gether and slide the retainer toward the center of the
vehicle. Separate the torsion bar from the door crank
on the side of the vehicle affected.
(5) Remove headlamp door side trim covers and
lower trim covers.
(6) Remove outer pivot screw, door crank screw,
and loosen the door (lateral) adjustment collar.
(7) Remove the door crank from the door and ad-
justment collar.
(8) Lower the door from under the grille opening
panel and remove the door from the vehicle.
INSTALLATION
Reverse the preceding operation.
CONCEALED HEADLAMP MOTOR—AC-BODY
REMOVAL (FIG. 2)
(l) Remove the grille. Refer to Group 23, Body.
(2) Compress torsion bar retainers and slide them
toward the center of the vehicle. Separate the torsion
bar from the door cranks.
(3) Disconnect the headlamp door drive motor wire
connector. Remove three motor attaching bolts and
separate the drive motor and torsion bar from the ve-
hicle.
INSTALLATION
Reverse the preceding operation.
HEADLAMP DOOR—AY BODY
REMOVAL
(1) Turn headlight switch ON.
Fig. 2 Concealed headlamps—AC-body
Ä
LAMPS
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