(4) Reconnect the battery negative cable.
LICENSE LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove two screws (Fig. 24).
(3) Twist bulb socket and remove (Fig. 25).
(4) Pull bulb from socket.
INSTALLATION
(1) Push bulb into socket.
(2) Install socket into lamp.
(3) Install two screws.
(4) Reconnect the battery negative cable.
MULTI-FUNCTION SWITCH
DESCRIPTION - TURN SIGNAL SYSTEM
The turn signals are actuated with a lever on
Multi-Function Switch, located on the left side of the
steering wheel. The signals are automatically turned
off by a canceling cam (two lobes molded to the clock
spring mechanism). The cam comes in contact with
the cancel actuator on the turn signal (multi-func-
tion) switch assembly. Either cam lobe, pushing on
the cancel actuator, returns the switch to the OFF
position. The multi-function switch is a resistive
MUX switch that feeds inputs to the BCM.
OPERATION - TURN SIGNAL SYSTEM
Lane change signaling is actuated by applying par-
tial turn signal stalk movement toward the direction
desired until the indicator lamps flashes in the
instrument cluster. When the switch stalk is released
the stalk will spring back into the neutral position
turning OFF the turn signal.
With the ignition switch ON and the turn signal
switch stalk actuated left or right, current flows
through the:
²Multi-function switch
²Body Control Module
²Integrated Power Module (IPM)
²Turn indicator lamp
²Front and rear turn signal bulbs.
A chime will sound after the vehicle has traveled a
distance of approximately 1.0 mile and a speed of 15
mph, with the turn signal ON.
Fig. 23 HEADLAMP UNIT
1 - HEADLAMP UNIT
2 - HEADLAMP
3 - PARK/TURN SIGNAL LAMP
4 - WIRE HARNESS RETAINER
Fig. 24 LICENSE PLATE LAMP UNITS
1 - SCREW
2 - LICENSE PLATE LAMP
Fig. 25 LICENSE PLATE LAMP - REMOVE/INSTALL
1 - LICENSE PLATE LAMP UNIT
2 - BULB
RSLAMPS/LIGHTING - EXTERIOR8L-21
HEADLAMP UNIT (Continued)
ProCarManuals.com
LAMPS/LIGHTING - INTERIOR
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
INTERIOR LAMPS.....................25
CENTER CONSOLE LAMP SWITCH
REMOVAL.............................26
INSTALLATION.........................26
CLUSTER ILLUMINATION LAMPS
REMOVAL.............................26
INSTALLATION.........................26
COURTESY LAMP
REMOVAL.............................26
INSTALLATION.........................26
DOME LAMP
REMOVAL.............................26INSTALLATION.........................26
GLOVE BOX LAMP SWITCH
REMOVAL.............................26
INSTALLATION.........................27
LIFTGATE LAMP
REMOVAL.............................27
INSTALLATION.........................27
READING LAMP
REMOVAL.............................27
INSTALLATION.........................28
VANITY LAMP
REMOVAL.............................28
INSTALLATION.........................28
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
INTERIOR LAMPS
BULB APPLICATION TABLE
LAMP BULB
ABS LED
AIRBAG LED
ALARM SET PC74
AUTOSTICK VFD*
BRAKE SYSTEM WARNING LED
CONSOLE 194
CRUISE INDICATOR VFD*
DOME/RAIL LAMPS 578
DOOR AJAR INDICATOR LED
DOOR COURTESY LAMP 578
FRONT DOOR COURTESY 567
GLOVE BOX 194
HIGH BEAM INDICATOR (BASE
CLUSTER)LED
HIGH BEAM INDICATOR PC74
CLUSTER ILLUMINATION PC74
LAMP BULB
LIFTGATE 578
LIFTGATE AJAR LED
LOW FUEL INDICATOR LED
LOW WASHER FLUID
INDICATORLED
MIL (BASE CLUSTER) LED
MIL PC74
OIL INDICATOR (BASE
CLUSTER)LED
OIL INDICATOR PC74
OVERHEAD CONSOLE READING PC579
OVERDRIVE OFF INDICATOR VFD*
READING 578
SEAT BELT INDICATOR LED
TEMPERATURE INDICATOR LED
TRAC OFF INDICATOR VFD*
TURN SIGNAL INDICATOR
(BASE CLUSTER)LED
TURN SIGNAL INDICATOR PC74
VISOR VANITY 6501966
VOLTAGE INDICATOR LED
* VFD = VACUUM FLUORESCENT DISPLAY
RSLAMPS/LIGHTING - INTERIOR8L-25
ProCarManuals.com
INSTALLATION
(1) Push bulb into switch.
(2) Connect wire harness to switch.
(3) Push switch into instrument panel.
(4) Close glove box door.
(5) Reconnect the battery negative cable.
LIFTGATE LAMP
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Using a flat bladed tool, pry lamp from trim
panel (Fig. 3).
(3) Disconnect wire harness connector from lamp.
(4) Pry off lens and remove bulb.
INSTALLATION
(1) Install bulb and snap lens into place.
(2) Reconnect wire harness connector to lamp.
(3) Position lamp onto trim panel and snap into
place.
(4) Reconnect battery negative cable.
READING LAMP
REMOVAL
The front reading lamps are incorporated into the
overhead console. If the reading lamps require
replacement, the overhead console must be replaced.
(Refer to 8 - ELECTRICAL/OVERHEAD CONSOLE -
REMOVAL). The rear reading lamps are incorporated
into the assist handle. If the rear reading lamps
require replacement, the assist handle must be
replaced. (Refer to 23 - BODY/INTERIOR/ASSIST
HANDLE - REMOVAL). The bulbs can be serviced
separately.
(1) Disconnect and isolate the battery negative
cable.
(2) Using a flat bladed tool, pry off the lamp lens
(Fig. 4), (Fig. 5).
Fig. 3 LIFTGATE LAMP
1 - LIFTGATE LAMP
2 - WIRE HARNESS
Fig. 4 OVERHEAD CONSOLE
1 - LAMP LENS
2 - OVERHEAD CONSOLE
RSLAMPS/LIGHTING - INTERIOR8L-27
GLOVE BOX LAMP SWITCH (Continued)
ProCarManuals.com
ules push buttons located just rearward of the dis-
play screen in the overhead console. The three
universal transmitter push buttons are identified
with one, two or three light indicators so that they be
easily identified by sight or by feel.
Each of the three universal transmitter push but-
tons controls an independent radio transmitter chan-
nel. Each of these three channels can be trained to
transmit a different radio frequency signal for the
remote operation of garage door openers, motorized
gate openers, home or office lighting, security sys-
tems or just about any other device that can be
equipped with a radio receiver in the 286 to 399
MegaHertz (MHz) frequency range for remote opera-
tion. The universal transmitter is capable of operat-
ing systems using either rolling code or non-rolling
code technology.
The electronics module displays messages and a
small house-shaped icon with one, two or three dots
corresponding to the three transmitter buttons to
indicate the status of the universal transmitter. The
EVIC messages are:
²Cleared Channels- Indicates that all of the
transmitter codes stored in the universal transmitter
have been successfully cleared.
²Training- Indicates that the universal trans-
mitter is in its transmitter learning mode.
²Trained- Indicates that the universal transmit-
ter has successfully acquired a new transmitter code.
²Transmit- Indicates that a trained universal
transmitter button has been depressed and that the
universal transmitter is transmitting.
The universal transmitter cannot be repaired, and
is available for service only as a unit with the EVIC
or CMTC modules. If any of these components is
faulty or damaged, the complete EVIC or CMTC
module must be replaced.
OPERATION
The universal transmitter operates on a non-
switched source of battery current so the unit will
remain functional, regardless of the ignition switch
position. For more information on the features, pro-
gramming procedures and operation of the universal
transmitter, see the owner's manual in the vehicle
glove box.
DIAGNOSIS AND TESTING - UNIVERSAL
TRANSMITTER
If the universal transmitter is inoperative, but the
Electronic Vehicle Information Center (EVIC) or
Compass Mini-Trip Computer is operating normally,
see the owner's manual in the vehicle glove box for
instructions on training the universal transmitter.
Retrain the universal transmitter with a known good
transmitter as instructed in the owner's manual andtest the universal transmitter operation again. If the
unit is still inoperative, replace the faulty universal
transmitter and EVIC/CMTC module as a unit. If
both the universal transmitter and the EVIC/CMTC
module are inoperative, refer toOverhead Console
Diagnosis and Testingearlier in this group for fur-
ther diagnosis. For complete circuit diagrams, refer
toOverhead Consolein Wiring Diagrams.
AMBIENT TEMP SENSOR
DESCRIPTION
Ambient air temperature is monitored by the over-
head console through ambient temperature messages
received from the Front Control Module (FCM) over
the Programmable Communications Interface (PCI)
J1850 data bus circuit. The FCM receives a hard
wired input from the ambient temperature sensor.
The ambient temperature sensor is a variable resis-
tor mounted to a bracket that is secured with a screw
to the right side of the headlamp mounting module
grille opening, behind the radiator grille and in front
of the engine compartment.
Refer toFront Control Modulein Electronic
Control Modules. For complete circuit diagrams, refer
to the appropriate wiring information. The ambient
temperature sensor cannot be adjusted or repaired
and, if faulty or damaged, it must be replaced.
OPERATION
The ambient temperature sensor is a variable
resistor that operates on a five-volt reference signal
sent to it by the Front Control Module. The resis-
tance in the sensor changes as temperature changes,
changing the temperature sensor signal circuit volt-
age to the Front Control Module. Based upon the
resistance in the sensor, the Front Control Module
senses a specific voltage on the temperature sensor
signal circuit, which it is programmed to correspond
to a specific temperature. The Front Control Module
then sends the proper ambient temperature mes-
sages to the EVIC, CMTC over the PCI J1850 data
bus.
The thermometer function is supported by the
ambient temperature sensor, a wiring circuit, the
Front Control Module, the Programmable Communi-
cations Interface (PCI) data bus, and a portion of the
Electronics module. If any portion of the ambient
temperature sensor circuit fails, the Front Control
Module will self-diagnose the circuit.
The ambient temperature sensor circuit can also be
diagnosed by referring toDiagnosis and Testing -
Ambient Temperature Sensor, and Diagnosis
and Testing - Ambient Temperature Sensor Cir-
cuit. If the temperature sensor and circuit are con-
8M - 10 MESSAGE SYSTEMSRS
UNIVERSAL TRANSMITTER (Continued)
ProCarManuals.com
OPERATION
FRONT WIPER/WASHER SYSTEM
The windshield washer circuit is protected by a 15
amp Cartridge Fuse located in the IPM. The wiper
motor has permanent magnetic fields. The speeds are
determined by current flow to the appropriate set of
brushes inside the motor. The current flow is con-
trolled by the multi-function switch. The high speed/
low speed relays are located in the IPM. The speed
sensitive intermittent wiper is controlled by the Body
Control Module (BCM). The intermittent mode, with
the vehicle traveling greater than 10.4 mph, has a
range of 0.5 to 18 seconds. With the vehicle traveling
less than 10.4 mph, the time delay doubles to a
range of 1 to 36 seconds. The wiper arms will park at
the base of the windshield just above the cowl cover
after the wiper switch is turned OFF.
The windshield wiper motor and linkage is located
in an integral wiper unit at the rear of the engine
compartment. The wiper unit must be removed to
gain access to the wiper motor.
REAR WIPER/WASHER SYSTEM
When continuous rear wiper operation is required,
the BCM will provide ignition ON voltage to the rear
wiper motor. When the wiper switch is turned OFF,
the BCM provides circuit ground to operate the
motor until the wipe cycle is complete and the wiper
arm returns to the base of the rear window.
When intermittent rear wiper mode is selected, the
wiper motor will cycle every 7 seconds. The intermit-
tent delay time is also adjusted based upon vehicle
speed. With the vehicle traveling greater than 50
mph, the cycle changes to every 5 seconds.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - FRONT WIPER
SYSTEM
The windshield wiper system operates in several
modes:
²Low and high speed normal wipe²Speed sensitive intermittent wipe
²Wipe after wash
²Park (switch OFF)
The windshield wiper circuits are continuously
monitored and controlled by the Body Control Mod-
ule (BCM). If a problem occurs in the electronic com-
ponents, wiring, switch (except integral motor park
switch) and wiper motor a Diagnostic Trouble Code
(DTC) will be stored in the BCM memory. DTC's can
be retrieved using a DRB IIItscan tool. Refer to the
proper Body Diagnostic Procedures manual for DTC
descriptions and retrieval information.
The windshield wiper park switch and circuit is
monitored by the BCM. The park switch and circuit
can be tested using the Wiper System Diagnosis
table.
DIAGNOSIS AND TESTING - FRONT
WIPER/WASHER SWITCH
(1) Remove the multi-function switch (Refer to 8 -
ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/
MULTI-FUNCTION SWITCH - REMOVAL).
(2) Using an ohmmeter check resistance readings
between switch pins. Refer to the WIPER/WASHER
SWITCH RESISTANCE table.
WIPER/WASHER SWITCH RESISTANCE
SWITCH POSITION RESISTANCE BETWEEN
OFF 4 AND 3 = OPEN CIRCUIT
DELAY POSITION
1ST 3 AND 4 = 3.3KV 5%
2ND 3 AND 4 = 1.7KV 5%
3RD 3AND4=1KV 5%
4TH 3 AND 4 = 620V 5%
5TH 3 AND 4 = 620V 5%
LOW 3 AND 4 = 430V 5%
HIGH 3 AND4=240V 5%
WASH 1 AND 3 = 5.9KV 5%
8R - 2 WIPERS/WASHERSRS
WIPERS/WASHERS (Continued)
ProCarManuals.com
WIRING
TABLE OF CONTENTS
page page
WIRING DIAGRAM INFORMATION....... 8W-01-1
COMPONENT INDEX.................. 8W-02-1
POWER DISTRIBUTION............... 8W-10-1
GROUND DISTRIBUTION.............. 8W-15-1
BUS COMMUNICATIONS.............. 8W-18-1
CHARGING SYSTEM.................. 8W-20-1
STARTING SYSTEM.................. 8W-21-1
FUEL/IGNITION SYSTEM.............. 8W-30-1
TRANSMISSION CONTROL SYSTEM..... 8W-31-1
VEHICLE SPEED CONTROL............ 8W-33-1
ANTILOCK BRAKES................... 8W-35-1
VEHICLE THEFT SECURITY SYSTEM..... 8W-39-1
INSTRUMENT CLUSTER............... 8W-40-1
HORN/CIGAR LIGHTER/POWER OUTLET . . 8W-41-1
AIR CONDITIONING-HEATER........... 8W-42-1
AIRBAG SYSTEM.................... 8W-43-1
INTERIOR LIGHTING.................. 8W-44-1
BODY CONTROL MODULE............. 8W-45-1MESSAGE CENTER................... 8W-46-1
AUDIO SYSTEM..................... 8W-47-1
REAR WINDOW DEFOGGER............ 8W-48-1
OVERHEAD CONSOLE................. 8W-49-1
FRONT LIGHTING.................... 8W-50-1
REAR LIGHTING..................... 8W-51-1
TURN SIGNALS...................... 8W-52-1
WIPERS............................ 8W-53-1
TRAILER TOW....................... 8W-54-1
POWER WINDOWS................... 8W-60-1
POWER DOOR LOCKS................ 8W-61-1
POWER MIRRORS................... 8W-62-1
POWER SEATS...................... 8W-63-1
SPLICE INFORMATION................ 8W-70-1
CONNECTOR PIN-OUTS............... 8W-80-1
CONNECTOR/GROUND/SPLICE
LOCATION........................ 8W-91-1
POWER DISTRIBUTION SYSTEM........ 8W-97-1 RSWIRING
8W-1
ProCarManuals.com
8W-44 INTERIOR LIGHTING
Component Page
A/C- Heater Control.................. 8W-44-8
Accessory Relay..................... 8W-44-4
Auto Temp Control................... 8W-44-8
Body Control Module...... 8W-44-2, 3, 4, 5, 6, 7, 8
Center Dome Lamp................... 8W-44-5
Driver Door Courtesy Lamp............ 8W-44-2
Floor Console Lamp.................. 8W-44-4
Front Cigar Lighter.................. 8W-44-7
Front Control Module................. 8W-44-4
Front Reading Lamps/Switch......... 8W-44-4, 5
Fuse 6............................. 8W-44-4
G200........................ 8W-44-2, 5, 7, 8
G300............................ 8W-44-2, 8
G301........................ 8W-44-2, 3, 5, 6
G302.............................. 8W-44-4
G400.............................. 8W-44-2
Glove Box Lamp..................... 8W-44-5
Halo Lamp......................... 8W-44-2
Headlamp Switch............ 8W-44-3, 5, 6, 7, 8Component Page
Instrument Cluster................... 8W-44-7
Instrument Panel Switch Bank.......... 8W-44-7
Integrated Power Module.............. 8W-44-4
Left Liftgate Flood Lamp.............. 8W-44-2
Left Mid Reading Lamp............... 8W-44-3
Left Rear Reading Lamp............... 8W-44-3
Left Visor/Vanity Lamp................ 8W-44-6
Overhead Console.................... 8W-44-5
Passenger Door Courtesy Lamp......... 8W-44-2
Power Mirror Switch.................. 8W-44-8
Radio............................. 8W-44-7
Rear Auto Temp Control Switch......... 8W-44-8
Rear Blower Rear Control Switch........ 8W-44-8
Rear Dome Lamp.................... 8W-44-5
Right Liftgate Flood Lamp............. 8W-44-2
Right Mid Reading Lamp.............. 8W-44-3
Right Rear Reading Lamp............. 8W-44-3
Right Visor/Vanity Lamp............... 8W-44-6
RS8W-44 INTERIOR LIGHTING8W-44-1
ProCarManuals.com
8W-50 FRONT LIGHTING
Component Page
Body Control Module............. 8W-50-2, 4, 5
Diagnostic Junction Port........... 8W-50-5, 6, 8
Front Control Module . . 8W-50-3, 4, 6, 7, 8, 9, 10, 11
Front Fog Lamp Relay............... 8W-50-11
Fuse 1............................ 8W-50-11
Fuse 2........................... 8W-50-4, 6
Fuse 3.......................... 8W-50-4, 8
G102......................... 8W-50-4, 8, 11
G200........................... 8W-50-2, 10
G300.............................. 8W-50-3
Headlamp Switch................. 8W-50-2, 10
Integrated Power
Module......... 8W-50-3, 4, 5, 6, 7, 8, 9, 10, 11
Left Fog Lamp..................... 8W-50-11
Left Front Park/Turn Signal Lamp....... 8W-50-4Component Page
Left Headlamp...................... 8W-50-3
Left Headlamp Leveling Motor....... 8W-50-6, 10
Left High Beam Lamp.............. 8W-50-6, 7
Left Low Beam Lamp................. 8W-50-7
Left Park Lamp................... 8W-50-6, 7
Multi- Function Switch................ 8W-50-5
Park Lamp Relay................ 8W-50-4, 6, 8
Right Fog Lamp.................... 8W-50-11
Right Front Park/Turn Signal Lamp...... 8W-50-4
Right Headlamp..................... 8W-50-3
Right Headlamp Leveling Motor...... 8W-50-8, 10
Right High Beam Lamp............. 8W-50-8, 9
Right Low Beam Lamp................ 8W-50-9
Right Park Lamp.................. 8W-50-8, 9
RS8W-50 FRONT LIGHTING8W-50-1
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