
INSTRUMENT PANEL SYSTEMS
TABLE OF CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION..........................1
DESCRIPTION AND OPERATION
HEADLAMP SWITCH......................2
INSTRUMENT CLUSTER....................2
WARNING AND INDICATOR LAMPS..........2
DIAGNOSIS AND TESTING
AIRBAG WARNING SYSTEM................2
BRAKE SYSTEM WARNING LAMP TEST.......2
INSTRUMENT CLUSTER LAMPS.............2
LOW OIL PRESSURE WARNING LAMP TEST...3
MULTIPLE/INDIVIDUAL GAUGES
INOPERATIVE..........................4
SERVICE PROCEDURES
INSTRUMENT CLUSTER SELF-DIAGNOSTICS...4
REMOVAL AND INSTALLATION
ACCESSORY SWITCH/POWER OUTLET
BEZEL................................4CENTER CONSOLE FLOOD LAMP............5
CIGAR LIGHTER / POWER OUTLET
ASSEMBLY.............................5
GLOVE BOX DOOR/BIN....................6
GLOVE BOX DOOR/BIN....................6
GLOVE BOX SWITCH/LAMP.................6
INSTRUMENT CLUSTER....................6
INSTRUMENT CLUSTER BEZEL..............6
INSTRUMENT CLUSTER LAMPS.............7
INSTRUMENT PANEL ASSEMBLY............7
INSTRUMENT PANEL CENTER BEZEL........10
INSTRUMENT PANEL END CAPS............10
INSTRUMENT PANEL TOP COVER...........10
LOWER INSTRUMENT PANEL COVER........10
LOWER STORAGE BIN....................10
STEERING COLUMN SHROUDS.............11
GENERAL INFORMATION
INTRODUCTION
The purpose of the dash gauges and indicator
lamps is to keep the driver informed about the oper-
ating condition of the vehicle. If an abnormal condi-
tion occurs, the driver is informed by indicator lamp.
The driver can seek service before damage occurs.
Indicator lamps use ON/OFF switch functions for
operation, while gauges use a sending unit or sensor.
The Instrument Panel can be removed as an
assembly after a few part are removed to allow
access to the retaining bolts. There is one self-align-
ing bulkhead connector on the left underside of the
instrument panel replacing most of the main harness
connectors. Once removed, the instrument panel can
be serviced for replacement. Most of the parts of the
instrument panel can be replaced individually with-
out removing the complete instrument panel assem-
bly.
Fig. 1 Instrument Panel
1 ± DEMISTER OUTLET
2 ± INSTRUMENT CLUSTER
3 ± CENTER AIR OUTLET
4 ± INSTRUMENT PANEL SPEAKERS
5 ± GLOVE BOX
6 ± HVAC CONTROL HEAD
7 ± RADIO
8 ± CIGAR LIGHTER/AUXILIARY POWER OUTLET
9 ± TRACTION CONTROL SWITCH
10 ± REAR WINDOW DEFOGGER SWITCH
PLINSTRUMENT PANEL SYSTEMS 8E - 1

DESCRIPTION AND OPERATION
HEADLAMP SWITCH
The headlamp switch is part of the Multi-Function
Switch. Refer to Group 8J, Turn Signal and Flasher
for the Multi-Function Switch Test, Removal and
Installation procedures.
INSTRUMENT CLUSTER
There are two conventional instrument cluster
assemblies available. The clusters electronically drive
the speedometer, odometer, gauges, and tachometer
(if equipped). Refer to (Fig. 2) and (Fig. 3).
The instrument cluster controls the courtesy
lamps, it receives and sends messages to other mod-
ules via the PCI bus circuit, it controls all the instru-
ment illumination and the chime is also an integral
part of the cluster. The front turn signals are wired
through the cluster and then go to the front lamps.
The reason being that the DRL module is built into
the cluster (if equipped).
All gauges in the electronic clusters are the analog
type gauges. When the ignition switch is moved to
the OFF position, the cluster drives each gauge to its
lowest position. The individual gauges are not servi-
cable and require complete replacement of the cluster
if one or more gauges are inoperable.
One button is used to switch the display from trip
to total mileage. Holding the button when the display
is in the trip mode will reset the trip mileage. This
button is also used to put the cluster in self-diagnos-
tic mode. Refer to Service Procedures, Cluster Self-
Diagnostics in this section. Most of the indicators will
come on briefly for a bulb heck when the ignition is
turned from OFF to ON. All of the LED's are replace-
able.
In the event that the instrument cluster looses
communication with all other modules on the PCI
bus, the cluster will display ªnobusº in the VF dis-
play. The VF display also displays ªDoorº, ªCruiseº,
ªTracº, and odometer trip or total.
If the cluster does not detect voltage on the cour-
tesy lamp circuit, the message ªFUSEº will alternate
with the odometer/trip odometer for 30 seconds after
the ignition is turned on and for 15 seconds after the
vehicle is first moved. The lack of voltage can be due
to the M1 Fused B(+) (IOD) fuse being open, a bad or
missing courtesy lamp bulb, or a circuit problem.
WARNING AND INDICATOR LAMPS
The instrument cluster has warning lamps and
indicators for the following systems:
²Airbag
²Anti-lock Brakes (ABS) if equipped
²Brake warning
²Charging System²Front fog lamps (if equipped)
²High beam indicator
²Low fuel (premium cluster only)
²Low oil pressure
²Malfunction indicator (service engine soon) lamp
²Right and left turn signals
²Seat belt warning
²Security system
²Trac-Off (ABS equipped vehicles only)
The instrument cluster has a Vacuum Fluorescent
(VF) display for the following systems:
²Cruise
²Door (ajar)
²Odometer
²Set (cruise)
²Trac
²Trip
DIAGNOSIS AND TESTING
AIRBAG WARNING SYSTEM
For testing of this system refer to Group 8M, Pas-
sive Restraint Systems.
BRAKE SYSTEM WARNING LAMP TEST
The brake warning lamp illuminates when the
parking brake is applied with ignition switch turned
to the ON position. The same lamp will also illumi-
nate if one of the two service brake systems fail the
when brake pedal is applied.
To test the system:
²As the ignition switch is turned to the start posi-
tion the lamp should light.
²Turn ignition switch to the ON position and
apply the parking brake. The lamp should light.
If lamp fails to light inspect for:
²A burned out lamp
²Loose, corroded or damaged socket
²A damaged circuit board
²A broken or disconnected wire at the switch
²Defective switch
To test the service brake warning system, refer to
Group 5, Brakes, Hydraulic System Control Valves.
INSTRUMENT CLUSTER LAMPS
Every time the vehicle is switched to the START/
RUN position, the cluster goes through a BULB
CHECK. This tests most of the indicator lamps and
Vacuum Fluorescent (VF) displays. If only one lamp
is out, remove the instrument cluster and replace the
defective bulb or Light Emitting Diode (LED). If
some or all of the lamps fail to light, refer to the
proper Body Diagnostics Procedures Manual.
8E - 2 INSTRUMENT PANEL SYSTEMSPL

To diagnose the cluster lamps first place the clus-
ter in self-diagnostic mode. With the ignition switch
in the off position, press the trip odometer reset but-
ton down. Simultaneously turn the ignition key to
the ON position and release the trip reset button. All
the indicator lamps and VF displays should illumi-
nate except for the fog lamp, turn signal, and high
beam select indicators. Refer to (Fig. 2), (Fig. 3), and
the Cluster Identification table.
1 ± FOG LAMP
2 ± BRAKE**
3 ± TRAC OFF**
4 ± ABS**
5 ± SPEEDOMETER
6 ± LEFT/RIGHT TURN SIGNAL
7 ± HIGH BEAM
8 ± TACHOMETER
9 ± OIL PRESSURE**
10 ± SEAT BELT**
11 ± BATTERY**
12 ± AIR BAG**
13 ± SECURITY*
14 ± FUEL FILLER DOOR LOCATOR
15 ± FUEL GAUGE
16 ± LOW FUEL*
17 ± MALFUNCTION INDICATOR LAMP (MIL)**
18 ± TRIP RESET BUTTON
19 ± TRAC**
20 ± ODOMETER**
21 ± DOOR (AJAR)**
22 ± SET CRUISE*
23 ± TRIP**
24 ± CRUISE*
25 ± TEMPERATURE GAUGE
*ILLUMINATE DURING SELF-DIAGNOSTICS
**ILLUMINATE DURING BULB CHECK AND SELF-DIAGNOSTICS
LOW OIL PRESSURE WARNING LAMP TEST
The low oil pressure warning lamp will illuminate
when the ignition switch is turned to the ON position
without engine running. The lamp also illuminates if
the engine oil pressure drops below a safe oil pres-
sure level.To test the system, turn the ignition switch to the
ON position. If the lamp fails to light, inspect for a
broken or disconnected wire at the oil pressure
switch, located at the front of the engine (Fig. 4). If
the wire at the connector checks good, pull the con-
nector loose from the switch and with a jumper wire,
ground the connector to the engine. With the ignition
switch turned to the ON position, check the warning
lamp. If the lamp still fails to light, inspect for a
burned out lamp or disconnected socket in the clus-
ter.
Fig. 2 Base Instrument Cluster Without Tachometer
Fig. 3 Premium Instrument Cluster With Tachometer
1 ± FOG LAMP
2 ± BRAKE**
3 ± TRAC OFF**
4 ± ABS**
5 ± SPEEDOMETER
6 ± LEFT/RIGHT TURN SIGNAL
7 ± HIGH BEAM
8 ± TACHOMETER
9 ± OIL PRESSURE**
10 ± SEAT BELT**
11 ± BATTERY**
12 ± AIR BAG**
13 ± SECURITY*
14 ± FUEL FILLER DOOR LOCATOR
15 ± FUEL GAUGE
16 ± LOW FUEL*
17 ± MALFUNCTION INDICATOR LAMP (MIL)**
18 ± TRIP RESET BUTTON
19 ± TRAC**
20 ± ODOMETER**
21 ± DOOR (AJAR)**
22 ± SET CRUISE*
23 ± TRIP**
24 ± CRUISE*
25 ± TEMPERATURE GAUGE
*ILLUMINATE DURING SELF-DIAGNOSTICS
**ILLUMINATE DURING BULB CHECK AND SELF-DIAGNOSTICS
PLINSTRUMENT PANEL SYSTEMS 8E - 3
DIAGNOSIS AND TESTING (Continued)

MULTIPLE/INDIVIDUAL GAUGES INOPERATIVE
Test speedometer, tachometer and other gauges for
malfunction:
(1) Remove the cluster. Refer to Cluster Removal
and Installation.
(2) Check for ignition voltage at Pin 15 of the clus-
ter wire harness connector (Fig. 5). Check for battery
voltage at Pin 21 of the connector. If no voltage,
repair as necessary.
(3) Check Pin 10 of the connector for continuity to
ground. If no ground, repair as necessary.
(4) If the voltage and ground are OK, and the pins
or the connectors are not distorted, replace the
instrument cluster.
(5) Install cluster. Refer to Instrument Cluster
Removal and Installation in this section.
SERVICE PROCEDURES
INSTRUMENT CLUSTER SELF-DIAGNOSTICS
To put the cluster in self-diagnostics mode press
the trip reset button down and then turn the ignition
to the RUN position simultaneously, then release the
button. The gauges will increment to selected stoops
and all indicators will light with the exception of the
turn signals, high beam, and fog lamp indicators.
The oil lamp will come on when the ignition is
turned ON and the engine is OFF.
REMOVAL AND INSTALLATION
ACCESSORY SWITCH/POWER OUTLET BEZEL
REMOVAL
(1) Disconnect and isolate the battery negative
cable (Fig. 6).
(2) Remove the instrument panel center bezel.
Refer to Instrument Panel Center Bezel Removal and
Installation in this section.
(3) Remove four screws retaining accessory switch/
power outlet bezel (Fig. 7).(4) Disconnect the harness connectors to the fol-
lowing:
²Rear Window Defogger Switch (if equipped)
²Traction Control Switch (if equipped)
²Cigar Lighter/Power Outlet
Fig. 5 Cluster Wire Harness Connector
INSTRUMENT CLUSTER CONNECTOR PIN
CALL-OUT
PIN DESCRIPTION PIN DESCRIPTION
1 REAR FOG
LAMP FEED14 PARK LAMP
SWITCH
OUTPUT
2 PCI BUS 15 FUSED IGNITION
SWITCH
OUTPUT
(RUN-START)
3 COURTESY
LAMPS DRIVER16 DAYTIME
RUNNING
LAMPS
4 FOG LAMP
SWITCH
OUTPUT17 DAYTIME
RUNNING
LAMPS
5 VTSS
INDICATOR
DRIVER18 LEFT TURN
SIGNAL
6 PANEL LAMPS
DIMMER
SIGNAL19 RIGHT TURN
SIGNAL
7 FUEL LEVEL
SENSOR
SIGNAL20 DIMMER
SWITCH LOW
BEAM OUTPUT
8 NOT USED 21 FUSED B+
9 NOT USED 22 RED BRAKE
WARNING
INDICATOR
DRIVER
10 GROUND 23 KEY-IN IGNITION
SWITCH SENSE
11 NOT USED 24 DRIVER DOOR
AJAR SWITCH
SENSE
12 PANEL LAMPS
DRIVER25 SEAT BELT
SWITCH SENSE
13 KEYLESS
ENTRY SIGNAL26 DIMMER
SWITCH HIGH
BEAM OUTPUT
Fig. 4 Oil Pressure Switch
8E - 4 INSTRUMENT PANEL SYSTEMSPL
DIAGNOSIS AND TESTING (Continued)

The accessory switches are not serviced separately,
but the cigar lighter/power outlet is and must be
transferred to the new bezel. Refer to Cigar Lighter/
Power Outlet Removal and Installation in this sec-
tion.
INSTALLATION
For installation reverse the above procedures.
CENTER CONSOLE FLOOD LAMP
REMOVAL
(1) Insert a small screwdriver into notch by lens
and gently pry out unit. Refer to (Fig. 7).
(2) Slide back rear cover to expose bulb.
(3) Replace bulb.
INSTALLATION
For installation reverse the above procedures.
When installing the retainer ensure that the forward
tabs are inserted properly into the slots in the instru-
ment panel.
CIGAR LIGHTER / POWER OUTLET ASSEMBLY
REMOVAL
(1) Disconnect and isolate the battery negative
cable (Fig. 6).
(2) Look inside and note position of the retaining
bosses (Fig. 8).
(3) Using external snap ring pliers with 90 degree
tips. Insert pliers with tips against bosses and
squeeze forcing bosses out of base.
(4) Pull out the base through mounting ring by
gently rocking pliers. A tool can be made to do the
same. Refer to (Fig. 9).
(5) Disconnect the base wires.
Fig. 6 Battery Negative Cable Remove/Install
1 ± NEGATIVE CABLE
2 ± NEGATIVE BATTERY POST
Fig. 7 Accessory Switch/Power Outlet Bezel
1 ± REAR WINDOW DEFOGGER
2 ± TRACTION CONTROL SWITCH
3 ± CIGAR LIGHTER/AUXILIARY POWER OUTLET
Fig. 8 Cigar Lighter / Power Outlet Base Removal
1 ± RETAINING BOSSES-ENGAGE PLIERS HERE
2 ± PARTIALLY REMOVED
3 ± EXTERNAL SNAP-RING PLIERS
4 ± PULL BASE OUT-THROUGH MOUNTING RING
PLINSTRUMENT PANEL SYSTEMS 8E - 5
REMOVAL AND INSTALLATION (Continued)

TURN SIGNAL and HAZARD WARNING SYSTEMS
TABLE OF CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION..........................1
DESCRIPTION AND OPERATION
HAZARD WARNING SYSTEM................2
HEADLAMP SWITCH......................2
COMBINATION FLASHER...................2DIAGNOSIS AND TESTING
MULTI-FUNCTION SWITCH.................3
REMOVAL AND INSTALLATION
COMBINATION FLASHER...................5
MULTI-FUNCTION SWITCH.................5
GENERAL INFORMATION
INTRODUCTION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAG, SEE GROUP 8M, PASSIVE RESTRAINT SYS-
TEMS FOR AIRBAG REMOVAL.
The turn signals are part of the multi-function
switch (Fig. 1), which contains:
²Electrical circuitry for turn signals
²Hazard warning switch²Headlamp switch
²Fog Lamp Switch
²Headlamp beam select switch
²Optical Horn
²Instrument Panel Lamp Dimmer/Interior Lamp
Switch
²Combination Flasher
Fig. 1 Mutli-Function Switch
1 ± TURN SIGNAL CONTROL STALK
2 ± HAZARD WARNING SWITCH
3 ± WINDSHIELD WIPER/WASHER CONTROL
4 ± WINDSHIELD WIPER/WASHER SWITCH RETAINING
SCREWS5 ± CANCELLING CAM
6 ± PANEL DIMMER/INTERIOR LIGHT SWITCH
7 ± EXTERIOR LIGHTING CONTROL/FOG LAMP
PLTURN SIGNAL and HAZARD WARNING SYSTEMS 8J - 1

FOG LAMP
FOG LAMP DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
FOG LAMPS ARE
DIM WITH ENGINE
IDLING OR
IGNITION TURNED
OFF.1. Loose or corroded battery cables. 1. Clean and secure battery cable clamps
and posts.
2. Loose or worn generator drive belt. 2. Adjust or replace generator drive belt.
3. Charging system output too low. 3. Test and repair charging system. Refer to
Group 8A,
4. Battery has insufficient charge. 4. Test battery state-of -charge. Refer to
Group 8A.
5. Battery is sulfated or shorted. 5. Load test battery. Refer to Group 8A.
6. Poor lighting circuit Z1-ground. 6. Test for voltage drop across Z1-ground
locations. Refer to Group 8W.
FOG LAMP BULBS
BURN OUT
FREQUENTLY1. Charging system output too high. 1. Test and repair charging system. Refer to
Group 8A.
2. Loose or corroded terminals or splices in
circuit.2. Inspect and repair all connectors and
splices. Refer to Group 8W.
FOG LAMPS ARE
DIM WITH ENGINE
RUNNING ABOVE
IDLE1. Charging system output too low. 1. Test and repair charging system. Refer to
Group 8A.
2. Poor lighting circuit Z1-ground. 2. Test for voltage drop across Z1-ground
locations. Refer to Group 8W.
3. High resistance in fog lamp circuit. 3. Test amperage draw of fog lamp circuit.
FOG LAMPS
FLASH RANDOMLY1. Poor lighting circuit Z1-ground. 1. Test for voltage drop across Z1-ground
locations. Refer to Group 8W.
2. High resistance in fog lamp circuit. 2. Test amperage draw of fog lamp circuit.
3. Faulty fog lamp switch. 3. Replace fog lamp switch.
4. Loose or corroded terminals or splices in
circuit.4. Inspect and repair all connectors and
splices. Refer to Group 8W.
FOG LAMPS DO
NOT ILLUMINATE1. Blown fuse for fog lamp. 1. Replace fuse. Refer to Group 8W.
2. No Z1-ground at fog lamps. 2. Repair circuit ground. Refer to Group
8W.
3. Faulty fog lamp switch. 3. Replace fog lamp switch.
4. Broken connector terminal or wire splice
in fog lamp circuit.4. Repair connector terminal or wire splice.
5. Defective or burned out bulb. 5. Replace bulb.
PLLAMPS 8L - 3
DIAGNOSIS AND TESTING (Continued)

LAMP BULB SERVICE
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION
BULB...................................7
REMOVAL AND INSTALLATION
HEADLAMP BULB.........................7
FOG LAMP BULB..........................8
PARK AND TURN SIGNAL LAMP BULB.........8
FRONT SIDE MARKER LAMP BULB...........9
CENTER HIGH MOUNTED STOP LAMP BULB....9
TAIL, STOP, BACK-UP AND TURN SIGNAL
LAMP BULB............................9LICENSE PLATE LAMP BULB...............10
UNDERHOOD LAMP BULB.................10
REAR CARGO LAMP BULB.................10
DOME LAMP BULB.......................10
TRANSAXLE RANGE INDICATOR LAMP BULB . . 10
GLOVE BOX LAMP BULB...................11
FLOOR CONSOLE LAMP BULB..............11
VISOR VANITY LAMP BULB.................11
DESCRIPTION AND OPERATION
BULB
The electric light bulb is a source of electromag-
netic radiation which generates light. Vehicles use
many different types of bulbs:
²Headlamp bulb
²Fog Lamp bulb
²Tail Lamp bulb
²Stop Lamp bulb
²Turn Signal bulb
²Back up Lamp bulb
²Dome Lamp bulb
²Transaxle Range Indicator Lamp bulb (PRNDL)
²Glove Box Lamp bulb
²Floor Console Lamp bulb
²Rear Cargo Lamp bulb
²Visor Vanity Lamp bulb
²Underhood Lamp bulb
²etc.
REMOVAL AND INSTALLATION
HEADLAMP BULB
REMOVAL
(1) Release hood latch and open hood.
(2) Remove screws attaching headlamp module to
upper crossmember.
(3) Remove headlamp module from vehicle.
(4) Disconnect wire connector from back of head-
lamp bulb.
(5) Rotate retaining ring counterclockwise one
quarter turn.
(6) Remove retaining ring from headlamp module.
(7) Remove bulb from headlamp module (Fig. 1).
INSTALLATION
CAUTION: Do not touch the glass of halogen bulbs
with fingers or other possibly oily surface, reduced
bulb life will result.
(1) Install bulb into headlamp module.
(2) Install retaining ring to headlamp module.
(3) Rotate retaining ring clockwise one quarter
turn.
(4) Connect wire connector to the back of head-
lamp bulb.
(5) Place headlamp module in position.
(6) Install screws attaching headlamp module to
upper crossmember.
(7) Close hood.
PLLAMPS 8L - 7