headlamp CHEVROLET DYNASTY 1993 User Guide

(6) For installation reverse above procedures and
check operation of glove box door and adjust latch as
necessary.
GLOVE BOX LAMP AND SWITCH REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #2 prior to removing switch or wires
may short to ground. (2) Open glove box door. The lamp can be removed
without removing switch (3) Remove switch by squeezing retaining tabs
from behind switch mount and slide rearward. Dis-
connect wiring connectors. (4) Remove lamp and switch.
(5) For installation reverse above procedures.FOG LAMP RELAY REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #2 prior to removing switch or wires
may short to ground.
ART: 938e-92 ; SIZE (6) = 4-1/2h x 7-1/4w
Fig. 39 Cluster Connectors
Fig. 40 Cluster BezelFig. 41 Headlamp Switch Mounting Screws
8E - 18 INSTRUMENT PANEL AND GAUGES Ä

(2) Remove glove box assembly (Fig. 49). Refer to
Glove Box Assembly Replacement. (3) Remove screw from relay.
(4) Disconnect wiring.
(5) Remove relay. (6) For installation reverse above procedures.
REAR WINDOW DEFOGGER SWITCH
REPLACEMENT
(1) Remove left bezel by pulling straight back.
(2) Press tabs and pull switch rearward.
(3) Disconnect wiring and remove switch.
(4) For installation reverse above procedures.
INSTRUMENT PANEL CENTER BEZELREPLACEMENT
(1) Pull bezel straight back disengaging five clips.
(2) Disconnect ash receiver lamp and wiring from
bezel. (3) For installation reverse above procedures.
ASH RECEIVER/CUP HOLDER REPLACEMENT
(1) Remove center bezel. Disconnect ash receiver
lamp socket. (2) Remove four screws from center module and re-
move module.
Fig. 42 Headlamp Switch Wiring Connectors
Fig. 43 Headlamp Switch Knob and Stem
Fig. 44 Headlamp Switch Mounting Nut
Fig. 45 Fog Lamp Switch Test
Fig. 46 Lower Steering Column Cover
Ä INSTRUMENT PANEL AND GAUGES 8E - 19

AC AND AY BODIES INDEX
page page
Electronic Cluster ........................ 34
Gauges ................................ 28
General Information ....................... 23
Interior Lamp Replacement ................. 41 Mechanical Cluster and Gauge Service
........ 24
Mechanical/Electronic Cluster Removal ........ 25
Switch and Panel Component Service ......... 37
GENERAL INFORMATION
MECHANICAL CLUSTER
The mechanical cluster includes a fuel, oil pres-
sure, coolant temperature, and voltmeter gauges. All
incorporate magnetic type gauges. When the ignition
switch is in the OFF position, the gauges will show a
reading; however, the readings are only accurate
when the ignition switch is in the ON position. The mechanical cluster also includes an electric
speedometer, driven by pulses from the vehicle speed
sensor (Fig. 1).
ELECTRONIC CLUSTER
The electronic cluster is easily distinguished from
the mechanical cluster by its digital and linear dis-
play. The electronic cluster includes:
² Oil pressure gauge
² Coolant temperature gauge
² Voltmeter
² Fuel gauge
The electronic cluster receives virtually all of its
information to display from the body controller and
powertrain control module via the Chrysler Collision
Detection (CCD) Serial Data Bus. The odometer
memory is no longer retained in the cluster. This is
now retained in the body controller (Fig. 2).
ELECTRONIC CLUSTER DIMMING
The electronic cluster display is dimmed from day-
time to night time intensity when the headlamp
switch is turned on. This intensity can be controlled
using the headlamp switch rheostat. An additional detent on the headlamp switch rheo-
stat will allow daytime intensity while driving with
headlamps on during the daytime.
WARNING LAMPS
The mechanical instrument cluster will have warn-
ing lamps for six systems. These include brake sys-
tem, air bag, seat belt, low fuel, anti-lock for optional
anti-lock brake system, and malfunction indicator
(check engine) lamp. The cluster also includes check
gages indicator which will illuminate in a warning
situation. This will notify driver to check for a prob-
lem in coolant temperature, oil pressure, or electrical
systems. The electronic cluster will have warning indicator
lamps for eight different systems. These include:
² Air Bag
² Low washer fluid
² Door/deck lid ajar
² Malfunction Indicator (Check engine) Lamp
² Brake system
² Seat belt
² Anti-lock (ABS) for optional anti-lock brake sys-
tem
² Check gages, monitors engine coolant, oil pressure
and electrical charging system failures. In addition, ISO symbol will flash to notify the
driver in event of:
² Low fuel
² High temperature
² Low oil pressure
² Charging system failure
Fig. 1 Mechanical Cluster
Fig. 2 Electronic Cluster
Ä INSTRUMENT PANEL AND GAUGES 8E - 23

MESSAGE CENTER
The message center is a car graphic warning lamp
module. This conventional warning system and lo-
cated above the headlamp switch.
ELECTRONIC DIGITAL CLOCK
The electronic digital clock is in the radio. The
clock and radio each use the display panel built into
the radio. A digital readout indicates the time in
hours and minutes whenever the ignition switch is in
the ON or ACC position. When the ignition switch is in the OFF position, or
when the radio frequency is being displayed, time
keeping is accurately maintained. The procedure for setting the clock varies slightly
with each radio. The correct procedure is described
under the individual radio operating instructions re-
ferred to in the Owner's Manual supplied with the
vehicle.
AIR BAG WARNING SYSTEM
For testing of this system refer to Group 8M, Re-
straint Systems.
MECHANICAL CLUSTER AND GAUGE SERVICE
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel. When power is required for test purposes,
reconnect battery cable for the test only.
Disconnect negative battery cable after test and be-
fore continuing service procedures.
SENDING UNIT TEST
When a problem occurs with a cluster gauge, be-
fore disassembling the cluster to check the gauge,
check for a defective sending unit or wiring. (1) Sending units and wiring can be checked by
grounding the connector leads, at the sending unit,
in the vehicle. (2) With the ignition in the ON position; a
grounded input will cause the oil, fuel or tempera-
ture gauge to read at or above maximum.
CHECK GAUGES WARNING LAMP TESTS
The check gauges warning lamp is illuminated by
the low oil pressure sending unit switch or the body
controller when there is high temperature or charg-
ing system failure. To test the lamp, turn ignition key to the ON po-
sition without starting the vehicle. The low oil pres-
sure switch is grounded and the light will be on
indefinitely. If the lamp fails to light, pull the cluster and check
the following: (a) Continuity between ground and check gauge
pin J (Fig. 3). (b) Proper contact between the gauge pins and
wiring harness and printed circuit board pins. (c) If there is ground and proper pin contact, re-
place lamp. (d) If there is no continuity, check the low oil
pressure sending unit switch (Fig. 4 and 5).
To test the switch disconnect the switch electrical
connector. Attach positive lead of an ohmmeter to
the switch terminal for the gray (GY) wire and the
negative lead to an engine ground. With the engine
Fig. 3 Mechanical Cluster Connectors
8E - 24 INSTRUMENT PANEL AND GAUGES Ä

ELECTRONIC CLUSTER
SELF DIAGNOSTIC SYSTEM
The electronic clusters have an internal diagnostics
routing to isolate problems within the cluster or CCD
Bus. Using the cluster Self-Diagnostic Test will deter-
mine whether the problem is within the cluster or
outside of cluster (Fig. 29 and 30). Successful completion of the Self Diagnostic Test
indicates that the problem is in the CCD Bus, inter-
facing modules, connectors, or sensors outside of the
cluster. Refer to Fig. 31 for terminal listing.
CONDITION: CLUSTER DISPLAYS DO NOT ILLUMINATE AFTER VEHICLE IS STARTED
PROCEDURE
(1) Check fuses and verify battery and ignition
voltage at cluster connector. (2) Check ground from cluster connector to instru-
ment panel ground stud.
CONDITION: CLUSTER ASTERISK (*) FLASHES, CLUSTER DISPLAYS NOTINDICATING CORRECT DATA.
PROCEDURE
CCD bus problem. Use the Body Chassis Diagnos-
tic Manual to diagnose CCD Bus.
CONDITION: SPEEDOMETER AND ODOMETER ARE INOPERATIVE OR OPERATESINTERMITTENTLY
PROCEDURE
(1) If speedometer reads 0, or odometer is blank,
and cluster asterisk is flashing, use the Body Chassis
Diagnostic Manual to diagnose CCD Bus problem. (2) If cluster asterisk is not flashing, check for de-
fective vehicle speed sensor or speed sensor wiring.
CONDITION: OIL GAUGE, FUEL GAUGE, TEMPERATURE GAUGE, OR VOLTAGE GAUGEINOPERATIVE
PROCEDURE
If any gauge gives no indication and cluster aster-
isk is flashing, use the Body Chassis Manual to diag-
nose CCD Bus problem. If cluster asterisk is not flashing:
(1) Check for defective sending unit or wiring. (a) Sending units and wiring can be checked by
grounding the connector leads, at the sending unit,
in the vehicle. (b) With the ignition in the ON position, a
grounded input will cause the oil, fuel, or temper-
ature gauge to read maximum. (2) If the problem is with the oil, temperature, or
fuel gauge, check the body controller. If the problem
is with the voltage gauge, check the powertrain con-
trol module operation.
CONDITION: CLUSTER DISPLAY DOES NOT DIM WHEN HEADLAMP SWITCH ISACTIVATED AND RHEOSTAT ROTATED
PROCEDURE
If the cluster asterisk is flashing, Refer to the Body
Chassis Diagnostic Manual to diagnose the CCD Bus. If the cluster asterisk is not flashing:
(1) Check fuses in headlamp circuit.
(2) Check for loose connections or defective wiring
for headlamp switch to body controller. (3) Check for defective headlamp switch. The elec-
tronic instrument cluster receives the display inten-
sity status from the body controller via the CCD Bus.
CONDITION: SEAT BELT WARNING LAMP DOES NOT ILLUMINATE
PROCEDURE
Turn on ignition. Lamp should illuminate for six
seconds. If not: (1) Check for burned out lamp and retest.
(2) Replace cluster.
CONDITION: LOW WASHER, DOOR/DECK, OR MALFUNCTION INDICATOR (CHECK ENGINE)LAMP, DO NOT ILLUMINATE
PROCEDURE
(1) Perform cluster self-diagnostics to determine if
lamp will illuminate. If lamp does not, check for
burned out lamp, replace and retest. (2) If cluster asterisk is flashing, Refer to the Body
Chassis Diagnostic Manual to diagnose CCD Bus. (3) If cluster asterisk is not flashing:(a) For low washer fluid or door/deck, check in-
puts to body controller. (b) For malfunction indicator (check engine),
check powertrain control module operation.
CONDITION: ODOMETER DISPLAY IS BLANK. THE ODOMETER VALUE IS NO LONGERRETAINED IN THIS ELECTRONIC CLUSTER.THIS TAKES PLACE IN THE BODYCONTROLLER
PROCEDURE
(1) If cluster asterisk is flashing, Refer to the Body
Chassis Diagnostic Manual to diagnose CCD Bus. (2) If cluster asterisk is not flashing, perform clus-
ter self-diagnostics. If code 921 appears in the odom-
eter display, replace body controller for odometer
failure.
8E - 34 INSTRUMENT PANEL AND GAUGES Ä

(3) Slide control rearward, disconnect cable, vac-
uum harness and electrical wiring (Fig. 34).
(4) Remove control.
(5) For installation reverse above procedures.
AUTOMATIC TEMPERATURE CONTROL LAMP REPLACEMENT
(1) Remove automatic temperature control from in-
strument panel. (2) Remove top cover screw and unsnap cover from
control (Fig. 35). (3) Remove four screws that connect computer
housing to the button housing. (4) Unsnap the button housing from the computer
housing. (5) Remove lamps by turning in a counter clock-
wise direction and install lamps by turning in a
clockwise direction. (6) For installation reverse above procedures.
When finish perform ATC system function test.
HEADLAMP AND ACCESSORY SWITCH MODULE REPLACEMENT
(1) Remove cluster bezel (Fig. 32). (2) Remove four screws attaching module to instru-
ment panel (Fig. 36).
(3) Disconnect all wiring connectors to remove
module. (4) For installation reverse above procedures.
HEADLAMP SWITCH REPLACEMENT
(1) Remove headlamp and accessory switch module
from instrument panel (Fig. 36). (2) Press button on underside of headlamp switch
and pull knob and shaft to remove.
Fig. 33 Message Center
Fig. 34 A/C Control
Fig. 35 Automatic Temperature Control Lamp
Fig. 36 Headlamp and Accessory Switch Module
8E - 38 INSTRUMENT PANEL AND GAUGES Ä

(3) Remove switch assembly and escutcheon from
switch module by removing four attaching screws
(Fig. 37).
(4) Remove headlamp switch mounting plate from
switch by removing retaining nut. (5) For installation reverse above procedures.
REAR WINDOW DEFOGGER SWITCHREPLACEMENT
(1) Remove headlamp and accessory switch module
from instrument panel (Fig. 36). (2) Remove rear window defogger switch by de-
pressing snap-in clips on top and bottom of switch. (3) For installation reverse above procedures.
HOOD RELEASE HANDLE AND CABLEREPLACEMENT
(1) Disconnect hood release cable at hood latch.
(2) Remove two screws from underside of hood re-
lease handle. (3) Pull mechanism assembly rearward to remove.
(4) For installation reverse above procedures.
PARK BRAKE RELEASE HANDLE AND LINK REPLACEMENT
(1) Remove left side under panel silencer.
(2) Remove park brake link from lever on park
brake mechanism. (3) Remove upper and lower cluster bezels.
(4) Pull park brake release handle and remove
screw. (5) Remove column cover/park brake release han-
dle assembly by removing four remaining screws. (6) For installation reverse above procedures.
LAMP OUTAGE MODULE REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #13 prior to removing switch or wires
may short to ground. (2) Remove lower right instrument panel silencer.
(3) Remove glove box and ash receiver module.
(4) Remove three screws attaching the mounting
bracket to instrument panel. (5) Lower bracket and module assembly, to discon-
nect wire connectors. (6) Remove two screws attaching the Lamp Outage
Module to bracket. (7) Remove two screws attaching the security mod-
ule to bracket. (8) To installation reverse above procedures.
BODY CONTROLLER REPLACEMENT
(1) Remove right side door sill and kick panel trim
five screws (Fig. 38).
(2) Disconnect body controller wiring.
(3) Remove controller retaining nuts.
(4) For installation reverse above procedures.
GLOVE BOX/ASH RECEIVER ASSEMBLY REPLACEMENT
(1) Disconnect battery negative cable and isolate
or remove fuse #13 prior to removing switch or wires
may short to ground. (2) Remove center support cover/floor console as
necessary. (3) Disconnect glovebox/Ash receiver wiring con-
nectors (Fig. 39). (4) Remove ten screws around edge of glovebox/ash
receiver assembly. (5) Remove glovebox/ash receiver module from in-
strument panel. (6) For installation reverse above procedures.
Fig. 37 Headlamp and Accessory Switch
Fig. 38 Body Controller Location
Ä INSTRUMENT PANEL AND GAUGES 8E - 39

(4) Remove panel top cover by pushing forward
and prying up, using a straight edge to assist in the
removal. (5) Disconnect bulkhead connector at brace under
instrument panel at left side. (6) Remove glovebox/ash receiver module and right
instrument panel silencer. (7) Remove center panel support brace and air bag
diagnostic module assembly. (8) Disconnect wiring to airbag module.
(9) Remove upper and lower cluster bezels.
(10) Remove steering column cover.
(11) Remove steering column mounting nuts and
lower steering column. (12) Unhook shift indicator cable eyelet from steer-
ing column actuator. (13) Unlatch lock tab in shift indicator column in-
sert and squeeze legs together to remove from steer-
ing column. (14) Remove cluster assembly while guiding trans-
mission range indicator guide tube through access
hole in the base panel. (15) Remove instrument panel steering column
opening support/hood release handle assembly. (16) Remove two steering column upper studs and
loosen side cowl tie-down bolts. (17) Remove steering column tilt lever.
(18) Remove upper and lower lock housing shroud.
(19) Remove lower fixed shroud.
(20) Remove upper fixed shroud (snaps in place).
(21) Disconnect airbag pigtail, ignition switch and
halo light/key buzzer switch wiring. (22) Disconnect Multi-function switch by loosening
connector jack screw and pulling connector from
switch. (23) Disconnect airbag pigtail from wiring trough
housing by pulling two push fasteners. (24) Remove wiring trough from steering column.
(25) Remove defroster ducts.
(26) Remove five screws along fence line and roll
panel down, attach a hook to hold in position. (27) Open hood and remove plenum grill.
(28) Disconnect washer bottle, resistor block and
under hood lamp wiring. Washer bottle must be re-
moved to gain access. (29) Remove grommet and pull plenum wiring into
vehicle through plenum panel. (30) Disconnect right demister hose from instru-
ment panel. (31) Disconnect antenna cable.
(32) Disconnect right and left 25 way body wiring
connectors. (33) Disconnect A/C heater control cables, wiring
connectors and vacuum harness. (34) Remove right side panel ground wire.
(35) Disconnect body controller wiring.
(36) Remove instrument panel assembly from vehi-
cle. (37) For installation reverse above procedures.
INTERIOR LAMP REPLACEMENT
The reading, overhead console and door lamps op-
erate when the doors are open or headlamp switch is
placed in courtesy position. Front overhead lamps re-
fer to Group 8C, Overhead Console.
TRUNK LAMP
The lamp has easily accessible without removing
components.
DOOR LAMP
Pry along the forward edge of the lens and pivot
lens out of the door trim panel. Remove lamp. To re-
move lamp housing, remove door trim panel. Refer to
Group 23, Body. Disconnect all wiring. Remove
screws, if so equipped securing lamp housing to trim
panel, and replace housing.
CÐPILLAR READING/COURTESY LAMP
Pry along the rearward edge of the lamp and pivot
lamp out from quarter trim panel. Disconnect wiring
and remove lamp cover. Replace lamp. The lamp operates when the doors are open or the
headlamp switch is turned to the courtesy mode. The
lamp will function as a reading lamp when the doors
are closed and the button switch on the lamp is de-
pressed.
ROOF RAIL READING
Pry along the bottom edge of the lens and pivot
lens out. Replace lamp. To remove the lamp, remove
the screw which retains the coat hook. Remove the
garnish molding. Disconnect the wiring harness. Re-
move the two clips which retain the lamp to the
molding. Replace lamp. The lamp operates like the
C-pillar reading/courtesy lamp.
Ä INSTRUMENT PANEL AND GAUGES 8E - 41

AG AND AJ BODIES INDEX
page page
Cigar Lighter Removal ..................... 55
Cluster and Gauge Service and Testing ....... 43
Electronic Cluster ........................ 50
Electronic Vehicle Information Center (EVIC) .... 42
Engine Compartment Node ................. 55
Gauges ................................ 44 General Information
....................... 42
Instrument Panel Roll Down Procedure ........ 56
Interior Lamp Removal .................... 57
Mechanical/Electronic Cluster Removal ........ 43
Switch and Panel Component Service ......... 51
Switch Pod Assembly Removal .............. 43
GENERAL INFORMATION
CONVENTIONAL INSTRUMENT CLUSTER
The conventional instrument cluster incorporates
magnetic type gauges (Fig. 1).
The readings are only accurate when the ignition
switch is in the ON position.
TACHOMETER DRIVE MODULE
The tachometer drive module is an electronic mod-
ule used to drive a magnetic tachometer in a conven-
tional instrument cluster.
MESSAGE CENTER
The message center provides the driver with infor-
mation in addition to the standard vehicle instru-
mentation. A bezel will light up with door ajar,
washer fluid, deck ajar and alarm set information.
For vehicles without message center a plain bezel is
used.
ELECTRONIC VEHICLE INFORMATION CENTER
(EVIC)
The Electronic Vehicle Information Center is a
computer controlled warning system which, monitors
various sensors used on the vehicle. The system sup-
plements the warning indicators in the instrument
cluster. Visual warning messages are displayed by a
digital display (Fig. 2). Refer to Group 8C, Overhead
Console.
ELECTRONIC INSTRUMENT CLUSTER
The electronic instrument cluster uses vacuum flu-
orescent displays to display:
² Oil pressure
² System voltage
² Engine temperature
² Fuel level
² Speedometer and tachometer readings as well as
all warning indicators. The electronic cluster is eas-
ily distinguished from the conventional cluster by its
digital and linear display (Fig. 3.
ELECTRONIC CLUSTER DIMMING
The electronic cluster display is dimmed from day-
time to nighttime intensity when the head]lamp
switch is turned on. This intensity can be controlled
using the headlamp switch sliding rheostat. An additional detent on the headlamp switch rheo-
stat will allow daytime intensity while driving with
headlamps ON in daytime.
Fig. 1 Conventional Instrument Cluster
Fig. 2 EVIC
Fig. 3 Electronic Instrument Cluster
8E - 42 INSTRUMENT PANEL AND GAUGES Ä

Perform cluster Self Diagnostic Test to determine
whether problem is within cluster or outside of clus-
ter. Refer to Fig. 24 and 25.
Successful completion of the SELF DIAGNOSTIC
TEST indicates that the problem is in the wiring,
connectors or sensors out side of the cluster.
CLUSTER ASSEMBLY REMOVAL
The electronic cluster which is serviced as an as-
sembly is removed with the same procedure as the
conventional cluster.
CONDITION: CLUSTER DISPLAYS DO NOT ILLUMINATE AFTER VEHICLE IS STARTED
(1) Check fuses and verify battery and ignition
voltage at cluster connector. (2) Check ground from cluster connector to instru-
ment panel ground stud.
SWITCH AND PANEL COMPONENT SERVICE
HEADLAMP SWITCH
The headlamp switch is located on the left side of
the switch pod. The switch controls the headlamps,
parking lamps, fog lamps and instrument light dim- ming. If any of the switches require replacement the
entire headlamp switch assembly must be replaced
(Fig. 26 and 27).
REMOVAL
(1) Remove switch pod assembly from the instru-
ment panel. DO NOT attempt to remove instrument
cluster dimmer switch or wiper delay switch knob,
they are not removable. (2) Remove turn signal switch lever by pulling
straight out of switch pod. (3) Remove screws from bottom of switch pod.
(4) Separate inner and outer switch pod halves and
remove turn signal switch to gain access to screw. (5) Remove five inner switch pod panel screws and
3 screws from underneath the switch pod. Separate
the inner bezel from the outer bezel. (6) Remove switch mounting screws before discon-
necting linkage. (7) Disconnect switch linkage from buttons. Pull
the linkage straight up from the switch/button to dis-
engage it and remove switch.
Fig. 23 Mechanical Cluster Lamp Location
Ä INSTRUMENT PANEL AND GAUGES 8E - 51