headlamp CHEVROLET DYNASTY 1993 Workshop Manual

CONCEALED HEADLAMPS INDEX
page page
Concealed Headlamp MotorÐAC-Body ........ 29
Diagnostic Procedures ..................... 27
General Information ....................... 27 Headlamp DoorÐAC-Body
................. 29
Headlamp DoorÐAY Body ................. 29
Headlamp Drive MotorÐAY Body ............ 30
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:
² The Concealed Headlamps Electrical Diagnosis
chart in this section.
² The Wiring Diagrams Manual.
² 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:
² Headlamp door pivot and crank for seizure.
² Headlamp torsion bar sleeve or clip for excessive
wear or breakage.
² Headlamp door crank for missing or broken screw.
² Headlamp torsion bar for disengagement or break-
age.
PROBLEM
Headlamp door operates erratically.
CHECK:
² For freezing weather conditions.
² For excessive effort to move headlamp door pivots.
² For corrosion or improperly aligned components.
² For stripped motor reduction gears.
² 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 HEADLAMPSÐELECTRICAL DIAGNOSIS
8L - 28 LAMPS Ä

PROBLEM
Headlamp door or doors fit poorly, rattle, or bang
when coming open or closed.
CHECK:
² Headlamp door fascia mounting bracket or adjust-
able stops for improper alignment.
² Headlamp door pivot brackets or door/crank lateral
adjustment for improperly aligned collar.
² For missing or worn pivot bushings.
² For defective motor.
HEADLAMP DOORÐAC-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 MOTORÐAC-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 DOORÐAY BODY
REMOVAL
(1) Turn headlight switch ON.
Fig. 2 Concealed headlampsÐAC-body
Ä LAMPS 8L - 29

(2) Open hood and locate Power Distribution Cen-
ter forward of the left suspension tower (Fig. 3). (3) Remove cover from the center and pull the
Headlamp Close Relay (Fig. 4) to keep the headlamp
doors from closing. (4) Turn headlight switch OFF.
(5) Remove two grill mounting screws and remove
grill assembly (Fig. 5). (6) Spring tension must be relieved from the head-
lamp doors before removing headlamp motor torsion
bar clips. Locate the thumb wheel on bottom of head-
lamp motor (Fig. 6). Rotate thumb wheel approxi-
mately six to seven turns clockwise to relieve all
tension. (7) Remove torsion bar anchor clip (Fig. 7).
(8) Slide torsion bar sleeve over the torsion bar
(Fig. 8). (9) Remove three clips retaining turn signal lamp
shield to body (Fig. 9), and remove shield. (10) Remove two screws retaining headlamp cover
to headlamp cover bracket (Fig. 10). (11) Remove outer headlamp.
(12) Remove outer pivot screw (Fig. 11).
(13) Remove E-clip and door crank screw (Fig. 12).
(14) Remove three bolts retaining cam pivot to
body and remove cam pivot (Fig. 11). (15) Remove Headlamp door assembly.
INSTALLATION
Reverse the preceding operation. Before installing
torsion bar clips, the holes in the torsion bars, tor-
sion bar sleeves and headlamp door cam pivots must
be in alignment. Refer to Aligning Headlamp Doors.
HEADLAMP DRIVE MOTORÐAY BODY
REMOVAL
(1) Open headlamp doors. Refer to Headlamp Door
paragraph for instructions. (2) Remove grill mounting screws and remove grill
assembly (Fig. 5). (3) Spring tension must be relieved from headlamp
doors before removing the headlamp motor torsion
bar clips. Locate the thumb wheel on bottom of the
headlamp motor (Fig. 6). Rotate thumb wheel ap-
proximately six to seven turns (clockwise) to relieve
all tension. (4) Remove both torsion bar anchor clips (Fig. 7).
(5) Slide torsion bar sleeves over the torsion bar
(Fig. 8).
Fig. 3 Power Distribution Center
Fig. 4 Headlamp Close Relay
Fig. 5 Grill
Fig. 6 Headlamp MotorÐBottom View
8L - 30 LAMPS Ä

(6) Disconnect wire connector from motor.
(7) Remove motor mounting bolts (Fig. 11). (8) Slide torsion bar through the headlamp motor
(Fig. 13) and remove headlamp motor.
INSTALLATION
Reverse the preceding operation. Before installing
torsion bar clips, the holes in the torsion bars, tor-
sion bar sleeves and headlamp door cam pivots must
be in alignment.
HEADLAMP DOOR ALIGNMENT
Door stop adjustment screws, and a movable cam
pivot are used to adjust and align the headlamp
doors.
Fig. 9 Front Turn Signal Lamp Shield
Fig. 10 Headlamp Cover/Cover Pivot Bracket
Fig. 7 Torsion Bar Anchor Clips
Fig. 8 Torsion Bar Sleeves
Fig. 11 Outer Pivot Screw
Fig. 12 Headlamp Pivot E-Clip and Crank Screw
Ä LAMPS 8L - 31

Loosening the cam pivot bolts (Fig. 14) will allow
an up/down or in/out adjustment of the headlamp
doors. The stop screws (Fig. 14) are also used to achieve
proper tolerances.
Fig. 13 Headlamp Motor
Fig. 14 Cam Pivot Adjustment
8L - 32 LAMPS Ä

BULB APPLICATION TABLE
GENERAL INFORMATION
The following Bulb Application Table lists the
lamp title in bold print on the left side of the column.
The vehicle family and model codes are listed under
the lamp title. The trade number or part number is
listed on the right side of the column.
CAUTION: Do not use bulbs that have a higher can-
dle power than the bulb listed in the Bulb Applica-
tion Table. Damage to lamp can result. Do not touch halogen bulbs with fingers or other
possibly oily surfaces. Bulb life will be reduced .
EXTERIOR LAMPS
Back-up
AY/C-P ....................................................................921
AA/D-A, AC/C, AY/C-S .........................................922
AA/P-P-C, AJ/C, AP/D-P.....................................1156
AA/P-H, AC/D, AG/V, AY/C-P ...........................3157
Center High Mounted Stop
AA ...........................................................................921
AC, AG, AJ, AY, AP ............................................922
Cornering
AA, AY .................................................................3157
Fog
AA ......................................................................GE880
AP/D...................................................................GE893
AG, AP/P .................................................................H3
Front Side Marker
AA/P-H, AA/D, AC, AJ, AP, AY-S......................168
AA/P-PX, AA/C, AY-P ....................................194NA
Front Side Marker/Turn Sig.
AG....................................................................3157NA
Headlamp/Aero
AG, AJ-High Beam .............................................9005
AG, AJ-Low beam ...............................................9006
AA, AC/D, AP ......................................................9004
Headlamp/Sealed Low Beam
AC/C, AY ...........................................................H4703
Headlamp/Sealed High Beam
AC/C, AY ...........................................................H4701
License Plate
AA, AC/C, AG, AJ, AP, AY/C-S ..........................168
AC/D, AY/C-P.........................................................194
Park/Turn Signal
AC/C-D, AY/C-P, AY/C-S ..............................3157NA
AA/P-X-C, AC/C, AG, AY/C-P, AY/C-S ........194NA
AA/P-H-D ..............................................................3157
AJ, AP...................................................................2057
Rear Side Marker
AC/C, AG, AJ, AY/C-S-P ......................................168
AA/P-C-D, AC/D, AP, AY/CS (opt.) .....................916
Tail
AG ...........................................................................168
AJ, AY/C-P .............................................................916 Tail Reflector
AY ...........................................................................168
Tail/Stop/Turn Signal
AP ..........................................................................2057
AG, AC..................................................................3057
AA, AJ, AY ..........................................................3157
INTERIOR LAMPS
Some components have lamps that can only be ser-
viced by a Authorized Service Center (ASC) after the
component is removed from the vehicle. Contact local
dealer for location of nearest ASC. Chrysler vehicles
are equipped with a mechanical instrument cluster
(MIC) or an optional electronic instrument cluster
(EIC). If a bulb is unique to the MIC or EIC the ac-
ronym will follow the title.
INDICATOR LAMPS
Service procedures for the indicator lamps in the
instrument cluster are located in Group 8E, Instru-
ment Panel and Gauges. Air Bag (MIC)
AC, AY....................................................................103
AA, AG, AJ, AP ...............................................PC194
Antilock (MIC)
AA ...........................................................................103
AC, AG, AJ, AP, AY .......................................PC194
Antilock (EIC)
AA, AY ..............................................................PC194
AJ ............................................................................103
Brake (MIC)
AA ...........................................................................103
AC, AG, AJ, AP, AY .......................................PC194
Brake (EIC)
AA, AY ..............................................................PC194
AJ ............................................................................103
Check Engine (MIC)
AA ...........................................................................103
AC, AG, AJ, AP, AY .......................................PC194
Check Engine (EIC)
AA, AY ..............................................................PC194
AJ ............................................................................103
Check Gauges
All .......................................................................PC194
Door Open
AA, AC, AY .............................................................74
AP ............................................................................161
AG, AJ ............................................................4437661
Fog Lamp (MIC)
AG ......................................................................PC194
High Beam (MIC)
AA ...........................................................................103
AC, AG, AJ, AP, AY .......................................PC194
High Beam (EIC)
AA, AY ..............................................................PC194
Lamp Outage
8L - 38 LAMPS Ä

AA .............................................................................74
Low Fuel
AA ...........................................................................103
AP ............................................................................161
AC, AY...............................................................PC194
AG, AJ ............................................................5269245
Low Washer Fluid
AA, AC, AY .............................................................74
AP ............................................................................161
AG, AJ ............................................................4437661
Oil Pressure
All .......................................................................PC194
Trunk Open
AA, AC, AY .............................................................74
AP ............................................................................161
AG, AJ ............................................................4437661
Theft Alarm Set
AC, AY....................................................................168
AG, AJ ............................................................4437661
Turn Signal (MIC)
AA ...........................................................................103
AC, AG, AJ, AP, AY .......................................PC194
Turn Signal (EIC)
AA, AY ..............................................................PC194
Seat Belt (MIC)
AA ...........................................................................103
AC, AG, AJ, AP, AY .......................................PC194
Seat Belt (EIC)
AA, AY ..............................................................PC194
AJ ............................................................................103
DIMMER CONTROLLED LAMPS
Service procedures for most of the lamps in the in-
strument panel, Instrument cluster and switches are
located in Group 8E, Instrument Panel and Gauges. A/C Heater Control
All ..............................................................................37
Automatic Temperature Control
All ....................................................................4437661
Column Gearshift Indicator
AA, AC, AY ...........................................................161
Console Gearshift Indicator
AP ............................................................................194
AA, AG, AJ ............................................................161
Fog Lamp Switch Symbol
AG ......................................................................PC194
Headlamp Dimmer Switch
AG, AJ ......................................................................37
Headlamp Switch Symbol
AC, AY....................................................................161
AG, AJ ......................................................................37
Heater Control
All ............................................................................158
EVIC
AJ...........................................................................ASC
Instrument Cluster (MIC)
All .......................................................................PC194
Instrument Cluster (EIC) AA, AY .....................................................................74
Message Center
AA, AC, AY .............................................................74
AP ............................................................................161
Navigator/Travel Companion
AA, AJ ......................................................................74
Radio
All ..........................................................................ASC
Rear Defogger Switch
Not Serviceable, Replace Switch
Rear Wiper Switch
AG .............................................................................37
Theft Alarm
AC, AY....................................................................161
Top Lift Switch
AJ ....................................................................5268053
Travel Computer
All ..........................................................................ASC
Turbo Gauge
AP ............................................................................161
Windshield Wiper Switch
AG, AJ ......................................................................37
NON-DIMMING LAMPS
Service procedures for most of the lamps in the fol-
lowing list can be found in Group 23, Body. Some
components have lamps that can only be serviced by
a Authorized Service Center (ASC) after the compo-
nent is removed from the vehicle. Contact local
dealer for location of nearest ASC. Ash Receiver
AA .............................................................................74
AC, AP, AY ............................................................161
AG, AJ ......................................................................37
Center Console Rear
AJ ............................................................................906
Cigar Lighter
AA, AP ....................................................................161
Courtesy
AA, AC, AY-S .....................................................214-2
AJ ............................................................................906
AY-P.....................................................................212-2
Dome
ALL ......................................................................211-2
Engine Compartment
All ............................................................................105
Glove Compartment
All ..........................................................................1891
Ignition Lock
All ..............................................................................37
Inside Rear View Mirror
AJ ............................................................................168
Overhead Console
AA ...........................................................................912
AC, AY....................................................................906
AG, AJ, AP .........................................................212-2
Reading Lamp Front
All ............................................................................906
Ä LAMPS 8L - 39

AA BODY
Uses a power door lock inhibit relay. The relay is
located above the glove box compartment.
INHIBIT RELAY
(1) Using a voltmeter, test for battery voltage at
pin 4. If no voltage check fuse 15 (Fig. 13). (2) Using a ohmmeter, check for continuity to
ground at pin 8. If no continuity to ground, check in-
strument panel ground. (3) To check pin 5:(a) The key is in the ignition switch and a door
is open. (b) The key is in the ignition switch and the
headlamps are ON. (c) Test for continuity to ground.
(d) If not, the relay contact is open or the relay is
being energized when it should not be. Pin 5 feeds
the ground from the relay to door lock switch.
(4) To check pin 6: (a) The key is in the ignition switch and a door
is open. (b) The key is in the ignition switch and the
headlamps are ON. (c) Test for continuity to ground.
(d) If not, check key in switch, headlamps on
switch and/or door jamb switches. Pin 6, feeds
ground from key in switch to the relay.
Fig. 13 Inhibit Relay Connector
8P - 8 POWER LOCKS Ä

POWER MIRRORS
CONTENTS
page page
AUTOMATIC DAY/NIGHT INSIDE MIRROR .... 7
AUTOMATIC DAY/NIGHT INSIDE MIRROR WITH ULTRALIGHT HEADLAMP CONTROL ....... 7
GENERAL INFORMATION .................. 1
HEATED MIRROR ........................ 2
INSIDE MIRROR/READING LAMPS BULB/LENS REPLACEMENT ........................ 6
INSIDE MIRROR/READING LAMPS REPLACEMENT ........................ 6
MIRROR ASSEMBLY REPLACEMENTÐAA BODY.5
MIRROR ASSEMBLY REPLACEMENTÐ AC AND AY BODIES .................... 5
MIRROR ASSEMBLY REPLACEMENTÐAG BODY.5
MIRROR ASSEMBLY REPLACEMENTÐAJ BODY.5
MIRROR ASSEMBLY REPLACEMENTÐAP BODY.5
MIRROR MOTOR TEST PROCEDURE ........ 2
MIRROR SWITCH REPLACEMENTÐAA BODY . 3
MIRROR SWITCH REPLACEMENTÐAC AND AY BODIES .............................. 4
MIRROR SWITCH REPLACEMENTÐAG AND AJ BODIES .............................. 3
MIRROR SWITCH REPLACEMENTÐAP BODY . 4
MIRROR SWITCH TEST PROCEDURE ....... 2
TEST PROCEDURES ...................... 2
GENERAL INFORMATION
Electrically operated power mirrors are available
on all car lines. The mirrors are controlled by a sin-
gle switch assembly located either on the driver's
door trim panel or on the center console. There are three types of switches currently used,
each use s a L (left) R (right) for mirror selection (Fig.
1). Type I, which uses a rocker for mirror selection
and four buttons for mirror movement direction.
Type II, uses a toggle switch which is rotated clock-
wise for the Right mirror or counterclockwise for the
Left mirror selection, and moved UP, DOWN, LEFT,
or RIGHT for mirror movement direction. Type III, uses a paddle knob which is moved Left or Right for
mirror selection and four buttons for mirror move-
ment direction.
The motors which operate the mirrors are part of
the mirror assembly and cannot be replaced sepa-
rately. All vehicles are equipped with an Ignition-Off
Draw Connector which is used when the vehicles are
originally shipped from the factory. This connector,
which is located near the battery, helps to prevent
battery discharge during storage. For specific connec-
tor type and location, refer Group 8W, Wiring Dia-
grams.
Fig. 1 Power Mirror Switches
Ä POWER MIRRORS 8T - 1