2002 JEEP LIBERTY fog light

REAR WINDOW DEFOGGER
SWITCH
DESCRIPTION
The rear window defogger switch is installed in the
instrument panel HVAC contol head assembly. The
momentary-type switch provides a hard-wired ground
signal to the HVAC control head each time it is
depressed. The instrument cluster rear window
defogger timer and logic circuitry responds by ener-
gizing or de-energizing the rear window defogger
relay.
OPERATION
Energizing the rear window defogger relay pro-
vides electrical current to the rear window defogger
grid and, if the vehicle is so equipped, the outside
rear view mirror heating grids. An amber indicator
lamp in the defogger switch, which lights to indicate
when the defogger system is turned On, is also pow-
ered by the defogger relay output.
The defogger switch illumination lamp and indica-
tor lamp bulbs are serviceable. The defogger switch
cannot be repaired and, if faulty or damaged the
entire HVAC control head assembly must be
replaced.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - REAR WINDOW
DEFOGGER SWITCH
For circuit descriptions and diagrams, (Refer to
Appropriate Wiring Information).
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN AN ACCIDENTAL
AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable. Remove the HVAC control head assembly from
the instrument panel and unplug the defogger switch
wire harness connector-B.
(2) Check for continuity between the ground cir-
cuit cavity of the defogger switch wire harness con-nector and a good ground. There should be
continuity. If OK, go to Step 3. If not OK, repair the
open circuit as required.
(3) Check for continuity between the ground cir-
cuit terminal and the rear window defogger switch
sense circuit terminal on the back of the defogger
switch housing (Fig. 5). There should be momentary
continuity as the defogger switch button is depressed,
and then no continuity. If OK, (Refer to 8 - ELEC-
TRICAL/HEATED GLASS/REAR WINDOW DEFOG-
GER SWITCH - DIAGNOSIS AND TESTING -
INSTRUMENT CLUSTER REAR WINDOW DEFOG-
GER FUNCTION) If not OK, replace the faulty
switch (Fig. 5).
(4) Check switch position continuity between:
CONTACT PINS
1 - OFF LAMPS A-1 - A-7
2 - ON MOMENTARY B-6 - B-8
3 - ILLUMINATION LAMP A-7 - A-1
4 - INDICATOR LAMP B-12 - B-7
Fig. 5 A/C HEATER CONTROL HEAD (Rear View)
1 - A/C HEATER CONTROL HEAD
2 - A/C HEATER CONTROL HEAD LIGHT
3 - REAR WINDOW DEFOGGER SWITCH AND TEMPERATURE
BLEND DOOR- CONNECTOR B (12 PIN)
4 - A/C HEATER CONTROL HEAD LIGHT
5 - MODE SELECT CONTROL
6 - BLOWER SPEED CONTROL- CONNECTOR A (7 PIN)
7 - MOUNTING SCREWS (4)
8G - 8 WINDOW DEFOGGERKJ

perform its many functions. The EMIC module incor-
porates a blue-green digital Vacuum Fluorescent Dis-
play (VFD) for displaying odometer and trip
odometer information, as well as several warning
messages and certain diagnostic information. In addi-
tion to instrumentation and indicators, the EMIC has
the hardware and software needed to provide the fol-
lowing features:
²Chime Warning Service- A chime tone gener-
ator on the EMIC electronic circuit board provides
audible alerts to the vehicle operator and eliminates
the need for a separate chime module. (Refer to 8 -
ELECTRICAL/CHIME WARNING SYSTEM -
DESCRIPTION).
²Panel Lamps Dimming Service- The EMIC
provides a hard wired 12-volt Pulse-Width Modulated
(PWM) output that synchronizes the dimming level
of the radio display, gear selector indicator, heater-air
conditioner control, and all other dimmable lighting
on the panel lamps dimmer circuit with that of the
cluster illumination lamps and VFD.
The EMIC houses four analog gauges and has pro-
visions for up to twenty-four indicators (Fig. 2). The
EMIC includes the following analog gauges:
²Coolant Temperature Gauge
²Fuel Gauge
²Speedometer
²Tachometer
Some of the EMIC indicators are automatically
configured when the EMIC is connected to the vehi-
cle electrical system for compatibility with certain
optional equipment or equipment required for regula-
tory purposes in certain markets. While each EMIC
may have provisions for indicators to support every
available option, the configurable indicators will not
be functional in a vehicle that does not have the
equipment that an indicator supports. The EMIC
includes provisions for the following indicators (Fig.
2):
²Airbag Indicator (with Airbag System only)
²Antilock Brake System (ABS) Indicator
(with ABS only)
²Brake Indicator
²Charging Indicator
²Coolant Low Indicator (with Diesel Engine
only)
²Cruise Indicator (with Speed Control Sys-
tem only)
²Four-Wheel Drive Full Time Indicator (with
Selec-Trac Transfer Case only)
²Four-Wheel Drive Low Mode Indicator
²Four-Wheel Drive Part Time Indicator
²Front Fog Lamp Indicator (with Front Fog
Lamps only)
²High Beam Indicator
²Low Fuel Indicator²Low Oil Pressure Indicator
²Malfunction Indicator Lamp (MIL)
²Overdrive-Off Indicator (with Automatic
Transmission only)
²Rear Fog Lamp Indicator (with Rear Fog
Lamps only)
²Seatbelt Indicator
²Security Indicator (with Vehicle Theft
Security System only)
²Sentry Key Immobilizer System (SKIS)
Indicator (with SKIS only)
²Transmission Overtemp Indicator (with
Automatic Transmission only)
²Turn Signal (Right and Left) Indicators
²Wait-To-Start Indicator (with Diesel Engine
only)
²Water-In-Fuel Indicator (with Diesel Engine
only)
Each indicator in the EMIC is illuminated by a
dedicated Light Emitting Diode (LED) that is sol-
dered onto the EMIC electronic circuit board. The
LEDs are not available for service replacement and,
if damaged or faulty, the entire EMIC must be
replaced. Cluster illumination is accomplished by
dimmable incandescent back lighting, which illumi-
nates the gauges for visibility when the exterior
lighting is turned on. Each of the incandescent bulbs
is secured by an integral bulb holder to the electronic
circuit board from the back of the cluster housing.
The incandescent bulb/bulb holder units are available
for service replacement.
Hard wired circuitry connects the EMIC to the
electrical system of the vehicle. These hard wired cir-
cuits are integral to several wire harnesses, which
are routed throughout the vehicle and retained by
many different methods. These circuits may be con-
nected to each other, to the vehicle electrical system
and to the EMIC through the use of a combination of
soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
The EMIC modules for this model are serviced only
as complete units. The EMIC module cannot be
adjusted or repaired. If a gauge, an LED indicator,
the VFD, the electronic circuit board, the circuit
board hardware, the cluster overlay, or the EMIC
housing are damaged or faulty, the entire EMIC mod-
ule must be replaced. The cluster lens, hood and
mask unit and the individual incandescent lamp
bulbs with holders are available for service replace-
ment.
KJINSTRUMENT CLUSTER 8J - 3
INSTRUMENT CLUSTER (Continued)

OPERATION
The ElectroMechanical Instrument Cluster (EMIC)
is designed to allow the vehicle operator to monitor
the conditions of many of the vehicle components and
operating systems. The gauges and indicators in the
EMIC provide valuable information about the various
standard and optional powertrains, fuel and emis-
sions systems, cooling systems, lighting systems,
safety systems and many other convenience items.
The EMIC is installed in the instrument panel so
that all of these monitors can be easily viewed by the
vehicle operator when driving, while still allowing
relative ease of access for service. The microproces-sor-based EMIC hardware and software uses various
inputs to control the gauges and indicators visible on
the face of the cluster. Some of these inputs are hard
wired, but most are in the form of electronic mes-
sages that are transmitted by other electronic mod-
ules over the Programmable Communications
Interface (PCI) data bus network. (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES/COMMUNICATION - OPERATION).
The EMIC microprocessor smooths the input data
using algorithms to provide gauge readings that are
accurate, stable and responsive to operating condi-
tions. These algorithms are designed to provide
Fig. 2 EMIC Gauges & Indicators
1 - SKIS INDICATOR 16 - REAR FOG LAMP INDICATOR
2 - AIRBAG INDICATOR 17 - ABS INDICATOR
3 - LOW FUEL INDICATOR 18 - CHARGING INDICATOR
4 - WAIT-TO-START INDICATOR 19 - WATER-IN-FUEL INDICATOR
5 - OVERDRIVE-OFF INDICATOR 20 - ENGINE TEMPERATURE GAUGE
6 - COOLANT LOW INDICATOR 21 - ODOMETER/TRIP ODOMETER SWITCH BUTTON
7 - SEATBELT INDICATOR 22 - ODOMETER/TRIP ODOMETER DISPLAY
8 - TACHOMETER 23 - CRUISE INDICATOR
9 - LEFT TURN INDICATOR 24 - LOW OIL PRESSURE INDICATOR
10 - HIGH BEAM INDICATOR 25 - TRANSMISSION OVERTEMP INDICATOR
11 - RIGHT TURN INDICATOR 26 - PART TIME 4WD INDICATOR
12 - SPEEDOMETER 27 - BRAKE INDICATOR
13 - FRONT FOG LAMP INDICATOR 28 - FULL TIME 4WD INDICATOR
14 - 4WD LOW MODE INDICATOR 29 - SECURITY INDICATOR
15 - MALFUNCTION INDICATOR LAMP (MIL) 30 - FUEL GAUGE
8J - 4 INSTRUMENT CLUSTERKJ
INSTRUMENT CLUSTER (Continued)

gauge, a DRBIIItscan tool is required. Refer to the
appropriate diagnostic information.
FRONT FOG LAMP INDICATOR
DESCRIPTION
A front fog lamp indicator is standard equipment
on all instrument clusters, but is only functional on
vehicles equipped with the optional front fog lamps.
The front fog lamp indicator is located above the
engine temperature gauge and to the right of the
speedometer in the instrument cluster. The front fog
lamp indicator consists of a stencil-like cutout of the
International Control and Display Symbol icon for
ªFront Fog Lightº in the opaque layer of the instru-
ment cluster overlay. The dark outer layer of the
overlay prevents the indicator from being clearly vis-
ible when it is not illuminated. A green Light Emit-
ting Diode (LED) behind the cutout in the opaque
layer of the overlay causes the icon to appear in
green through the translucent outer layer of the
overlay when it is illuminated from behind by the
LED, which is soldered onto the instrument cluster
electronic circuit board. When the exterior lighting is
turned On, the illumination intensity of the front fog
lamp indicator is dimmable, which is adjusted using
the panel lamps dimmer control ring on the left con-
trol stalk of the multi-function switch. The front fog
lamp indicator is serviced as a unit with the instru-
ment cluster.
OPERATION
The front fog lamp indicator gives an indication to
the vehicle operator whenever the front fog lamps
are illuminated. This indicator is controlled by a
transistor on the instrument cluster electronic circuit
board based upon the cluster programming and elec-
tronic messages received by the cluster from the
Body Control Module (BCM) over the Programmable
Communications Interface (PCI) data bus. The front
fog lamp indicator Light Emitting Diode (LED) is
completely controlled by the instrument cluster logic
circuit, and that logic will allow this indicator to
operate whenever the instrument cluster receives a
battery current input on the fused B(+) circuit.
Therefore, the LED can be illuminated regardless of
the ignition switch position. The LED only illumi-
nates when it is provided a path to ground by the
instrument cluster transistor. The instrument cluster
will turn on the front fog lamp indicator for the fol-
lowing reasons:
²Front Fog Lamp-On Message- Each time the
cluster receives a front fog lamp-on message from the
BCM indicating the front fog lamps are turned On,
the front fog lamp indicator will be illuminated. Theindicator remains illuminated until the cluster
receives a front fog lamp-off message from the BCM.
²Actuator Test- Each time the cluster is put
through the actuator test, the front fog lamp indica-
tor will be turned on, then off again during the bulb
check portion of the test to confirm the functionality
of the LED and the cluster control circuitry.
The BCM continually monitors the exterior light-
ing (multi-function) switch to determine the proper
outputs to the front fog lamp relay. The BCM then
sends the proper front fog lamp indicator lamp-on
and lamp-off messages to the instrument cluster. For
further diagnosis of the front fog lamp indicator or
the instrument cluster circuitry that controls the
indicator, (Refer to 8 - ELECTRICAL/INSTRUMENT
CLUSTER - DIAGNOSIS AND TESTING). For
proper diagnosis of the front fog lamp system, the
BCM, the PCI data bus, or the electronic message
inputs to the instrument cluster that control the
front fog lamp indicator, a DRBIIItscan tool is
required. Refer to the appropriate diagnostic infor-
mation.
FUEL GAUGE
DESCRIPTION
A fuel gauge is standard equipment on all instru-
ment clusters. The fuel gauge is located in the left
lower corner of the instrument cluster, to the left of
the tachometer. The fuel gauge consists of a movable
gauge needle or pointer controlled by the instrument
cluster circuitry and a fixed 90 degree scale on the
cluster overlay that reads left-to-right from E (or
Empty) to F (or Full). An International Control and
Display Symbol icon for ªFuelº is located on the clus-
ter overlay, in the center of the gauge directly above
the hub of the gauge needle. An arrowhead pointed
to the left side of the vehicle is imprinted on the clus-
ter overlay next to the ªFuelº icon in the fuel gauge
to provide the driver with a reminder as to the loca-
tion of the fuel filler access. The fuel gauge graphics
are dark blue and black against a beige field, except
for a single red graduation at the far left (Empty)
end of the gauge scale, making them clearly visible
within the instrument cluster in daylight. When illu-
minated from behind by the panel lamps dimmer
controlled cluster illumination lighting with the exte-
rior lamps turned On, the blue graphics appear blue
and the red graphics appear red. The orange gauge
needle is internally illuminated. Gauge illumination
is provided by replaceable incandescent bulb and
bulb holder units located on the instrument cluster
electronic circuit board. The fuel gauge is serviced as
a unit with the instrument cluster.
KJINSTRUMENT CLUSTER 8J - 19
ENGINE TEMPERATURE GAUGE (Continued)

from the PCM indicating that the Off position of the
overdrive off switch has been selected, the overdrive
off indicator will be illuminated. The indicator
remains illuminated until the cluster receives an
overdrive off lamp-off message from the PCM or until
the ignition switch is turned to the Off position,
whichever occurs first.
²Actuator Test- Each time the cluster is put
through the actuator test, the overdrive off indicator
will be turned on, then off again during the bulb
check portion of the test in order to confirm the func-
tionality of the LED and the cluster control circuitry.
The PCM continually monitors the overdrive off
switch to determine the proper outputs to the auto-
matic transmission. The PCM then sends the proper
overdrive off lamp-on and lamp-off messages to the
instrument cluster. For further diagnosis of the over-
drive off indicator or the instrument cluster circuitry
that controls the indicator, (Refer to 8 - ELECTRI-
CAL/INSTRUMENT CLUSTER - DIAGNOSIS AND
TESTING). For proper diagnosis of the overdrive con-
trol system, the PCM, the PCI data bus, or the elec-
tronic message inputs to the instrument cluster that
control the overdrive off indicator, a DRBIIItscan
tool is required. Refer to the appropriate diagnostic
information.
REAR FOG LAMP INDICATOR
DESCRIPTION
A rear fog lamp indicator is standard equipment on
all instrument clusters, but is only functional on
vehicles equipped with the optional rear fog lamps,
which are available only in certain markets where
they are required. The rear fog lamp indicator is
located above the engine temperature gauge and to
the right of the speedometer in the instrument clus-
ter. The rear fog lamp indicator consists of a stencil-
like cutout of the International Control and Display
Symbol icon for ªRear Fog Lightº in the opaque layer
of the instrument cluster overlay. The dark outer
layer of the overlay prevents the indicator from being
clearly visible when it is not illuminated. An amber
Light Emitting Diode (LED) behind the cutout in the
opaque layer of the overlay causes the icon to appear
in amber through the translucent outer layer of the
overlay when it is illuminated from behind by the
LED, which is soldered onto the instrument cluster
electronic circuit board. When the exterior lighting is
turned On, the illumination intensity of the rear fog
lamp indicator is dimmable, which is adjusted using
the panel lamps dimmer control ring on the left con-
trol stalk of the multi-function switch. The rear fog
lamp indicator is serviced as a unit with the instru-
ment cluster.
OPERATION
The rear fog lamp indicator gives an indication to
the vehicle operator whenever the rear fog lamps are
illuminated. This indicator is controlled by a transis-
tor on the instrument cluster electronic circuit board
based upon the cluster programming and electronic
messages received by the cluster from the Body Con-
trol Module (BCM) over the Programmable Commu-
nications Interface (PCI) data bus. The rear fog lamp
indicator Light Emitting Diode (LED) is completely
controlled by the instrument cluster logic circuit, and
that logic will allow this indicator to operate when-
ever the instrument cluster receives a battery cur-
rent input on the fused B(+) circuit. Therefore, the
LED can be illuminated regardless of the ignition
switch position. The LED only illuminates when it is
provided a path to ground by the instrument cluster
transistor. The instrument cluster will turn on the
rear fog lamp indicator for the following reasons:
²Rear Fog Lamp-On Message- Each time the
cluster receives a rear fog lamp-on message from the
BCM indicating the rear fog lamps are turned On,
the rear fog lamp indicator will be illuminated. The
indicator remains illuminated until the cluster
receives a rear fog lamp-off message from the BCM.
²Actuator Test- Each time the cluster is put
through the actuator test, the rear fog lamp indicator
will be turned on, then off again during the bulb
check portion of the test to confirm the functionality
of the LED and the cluster control circuitry.
The BCM continually monitors the exterior light-
ing (multi-function) switch to determine the proper
outputs to the rear fog lamp relay. The BCM then
sends the proper rear fog lamp indicator lamp-on and
lamp-off messages to the instrument cluster. For fur-
ther diagnosis of the rear fog lamp indicator or the
instrument cluster circuitry that controls the indica-
tor, (Refer to 8 - ELECTRICAL/INSTRUMENT
CLUSTER - DIAGNOSIS AND TESTING). For
proper diagnosis of the rear fog lamp system, the
BCM, the PCI data bus, or the electronic message
inputs to the instrument cluster that control the rear
fog lamp indicator, a DRBIIItscan tool is required.
Refer to the appropriate diagnostic information.
SEATBELT INDICATOR
DESCRIPTION
A seatbelt indicator is standard equipment on all
instrument clusters. The seatbelt indicator is located
above the fuel gauge and to the right of the tachom-
eter in the instrument cluster. The seatbelt indicator
consists of a stencil-like cutout of the International
Control and Display Symbol icon for ªSeat Beltº in
the opaque layer of the instrument cluster overlay.
KJINSTRUMENT CLUSTER 8J - 27
OVERDRIVE OFF INDICATOR (Continued)

LAMPS
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - EXTERIOR............... 1LAMPS/LIGHTING - INTERIOR............... 65
LAMPS/LIGHTING - EXTERIOR
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - EXTERIOR
DESCRIPTION..........................2
OPERATION............................5
DIAGNOSIS AND TESTING - LAMPS/
LIGHTING - EXTERIOR..................7
SPECIFICATIONS - LAMPS/LIGHTING -
EXTERIOR...........................15
BACKUP LAMP SWITCH
DESCRIPTION.........................15
OPERATION...........................15
DIAGNOSIS AND TESTING - BACKUP LAMP
SWITCH............................15
BRAKE LAMP SWITCH
DESCRIPTION.........................16
OPERATION...........................16
DIAGNOSIS AND TESTING - BRAKE LAMP
SWITCH............................17
REMOVAL.............................17
INSTALLATION.........................18
CENTER HIGH MOUNTED STOP LAMP BULB
REMOVAL.............................18
INSTALLATION.........................19
CENTER HIGH MOUNTED STOP LAMP UNIT
REMOVAL.............................19
INSTALLATION.........................19
COMBINATION FLASHER
DESCRIPTION.........................19
OPERATION...........................19
DAYTIME RUNNING LAMP RELAY
DESCRIPTION.........................20
OPERATION...........................20
REMOVAL.............................21
INSTALLATION.........................21
FRONT FOG LAMP BULB
REMOVAL.............................21
INSTALLATION.........................22FRONT FOG LAMP RELAY
DESCRIPTION.........................22
OPERATION...........................22
DIAGNOSIS AND TESTING - FRONT FOG
LAMP RELAY.........................23
REMOVAL.............................24
INSTALLATION.........................24
FRONT FOG LAMP UNIT
REMOVAL.............................25
INSTALLATION.........................25
ADJUSTMENTS
ADJUSTMENT - FRONT FOG LAMP UNIT . . . 25
FRONT LAMP BULB
REMOVAL.............................26
INSTALLATION.........................27
FRONT LAMP UNIT
REMOVAL.............................27
INSTALLATION.........................28
FRONT POSITION LAMP BULB
REMOVAL.............................28
INSTALLATION.........................28
HAZARD SWITCH
DESCRIPTION.........................29
OPERATION...........................29
REMOVAL.............................30
INSTALLATION.........................30
HEADLAMP BULB
REMOVAL.............................31
INSTALLATION.........................32
HEADLAMP HIGH BEAM RELAY
DESCRIPTION.........................33
OPERATION...........................33
DIAGNOSIS AND TESTING - HEADLAMP
HIGH BEAM RELAY....................34
REMOVAL.............................34
INSTALLATION.........................35
KJLAMPS 8L - 1

HEADLAMP LEVELING MOTOR
DESCRIPTION.........................35
OPERATION...........................36
REMOVAL.............................36
INSTALLATION.........................36
HEADLAMP LEVELING SWITCH
DESCRIPTION.........................37
OPERATION...........................37
DIAGNOSIS AND TESTING - HEADLAMP
LEVELING SWITCH....................37
REMOVAL.............................38
INSTALLATION.........................38
HEADLAMP LOW BEAM RELAY
DESCRIPTION.........................39
OPERATION...........................39
DIAGNOSIS AND TESTING - HEADLAMP LOW
BEAM RELAY........................40
REMOVAL.............................40
INSTALLATION.........................41
HEADLAMP UNIT
REMOVAL.............................41
INSTALLATION.........................42
ADJUSTMENTS
ADJUSTMENT - HEADLAMP UNIT........42
LICENSE PLATE LAMP BULB
REMOVAL.............................44
INSTALLATION.........................45
LICENSE PLATE LAMP UNIT
REMOVAL.............................45
INSTALLATION.........................46
MULTI-FUNCTION SWITCH
DESCRIPTION.........................46
OPERATION...........................48
DIAGNOSIS AND TESTING - MULTI-
FUNCTION SWITCH...................50
REMOVAL.............................53
INSTALLATION.........................53
PARK LAMP RELAY
DESCRIPTION.........................54OPERATION...........................54
DIAGNOSIS AND TESTING - PARK LAMP
RELAY..............................55
REMOVAL.............................55
INSTALLATION.........................56
REAR FOG LAMP RELAY
DESCRIPTION.........................56
OPERATION...........................57
DIAGNOSIS AND TESTING - REAR FOG
LAMP RELAY.........................57
REMOVAL.............................58
INSTALLATION.........................58
REAR LAMP BULB
REMOVAL.............................58
INSTALLATION.........................59
REAR LAMP UNIT
REMOVAL.............................59
INSTALLATION.........................60
REPEATER LAMP BULB
REMOVAL.............................60
INSTALLATION.........................60
REPEATER LAMP UNIT
REMOVAL.............................60
INSTALLATION.........................61
TRAILER TOW CONNECTOR
REMOVAL.............................61
INSTALLATION.........................61
TRAILER TOW RELAY
DESCRIPTION.........................61
OPERATION...........................62
DIAGNOSIS AND TESTING - TRAILER TOW
RELAY..............................62
REMOVAL.............................63
INSTALLATION.........................64
TRAILER TOW WIRING
DESCRIPTION.........................64
LAMPS/LIGHTING - EXTERIOR
DESCRIPTION
The exterior lighting system for this model
includes the following exterior lamps (Fig. 1):
²Backup Lamps- The backup (or reverse) lamps
are integral to the rear lamp units mounted to the
back of the quarter panel on each side of the tailgate
at the rear of the vehicle.
²Brake Lamps- The brake (or stop) lamps
include a lamp that is integral to the rear lamp units
mounted to the back of the quarter panel on each
side of the tailgate, and the Center High Mounted
Stop Lamp (CHMSL) that is centered on the rear
edge of the roof panel above the flip-up glass opening
at the rear of the vehicle.²Daytime Running Lamps- Vehicles manufac-
tured for sale in Canada illuminate the high beam
filament in each headlamp bulb serves as the Day-
time Running Lamps (DRL).
²Front Fog Lamps- Optional front fog lamps
include a single round front fog lamp unit with an
adjustable reflector and a removable bulb that is
secured behind a dedicated opening on each forward-
facing end of the front bumper fascia.
²Hazard Warning Lamps- The hazard warning
lamps include all of the right and left turn signal
lamps.
²Headlamps- A single round headlamp housing
with a fixed lens, an adjustable reflector, and a single
removable halogen bulb is secured to the grille open-
ing panel on each side of the grille opening at the
8L - 2 LAMPS/LIGHTING - EXTERIORKJ

front of the vehicle. In certain markets where
required, a headlamp leveling actuator motor is
included on each headlamp.
²Park Lamps- The park lamps include the front
park lamps and front side marker lamps that are
integral to the front lamp units mounted at each end
of the bumper fascia at the front of the vehicle, as
well as the rear park lamps and rear side marker
lamps that are integral to the rear lamp units
mounted to the back of the quarter panel on each
side of the tailgate at the rear of the vehicle. The
park lamps include a license plate lamp or lamps,
depending upon the requirements of the market for
which the vehicle is manufactured. Vehicles with a
license plate tub located near the left end of the rear
bumper fascia have a single lamp, while vehicles
with a license plate module located on the spare tire
carrier have two license plate lamps. In certain mar-
kets where required, a front position lamp that is
integral to each headlamp unit is illuminated instead
of the front park lamps and front side marker lamps
in the park lamps circuit; and, a rectangular, red
reflector is located on the rear bumper fascia just
inboard and below each rear lamp unit.
²Rear Fog Lamps- Rear fog lamps are avail-
able only in certain markets where they are required
equipment. The rear fog lamps are integral to the
rear lamp units mounted to the back of the quarter
panel on each side of the tailgate at the rear of the
vehicle.
²Turn Signal Lamps- The turn signal lamps
include the front turn signal and front side marker
lamps that are integral to the front lamp units
mounted at each end of the bumper fascia at the
front of the vehicle, as well as rear turn signal lamps
that are integral to the rear lamp units mounted to
the back of the quarter panel on each side of the tail-
gate at the rear of the vehicle. In certain markets
where required, a repeater lamp unit mounted to
each front fender just behind the front wheel opening
is illuminated instead of the front side marker lamp
in each turn signal lamp circuit.
Other components of the exterior lighting system
for this model include:
²Combination Flasher- An electronic combina-
tion flasher is integral to the hazard warning switch
in the center of the instrument panel.
²Backup Lamp Switch- Vehicles equipped with
a manual transmission have a plunger-type backup
lamp switch located on the transmission housing. ATransmission Range Sensor (TRS) integral to the
solenoid pack on the valve body of the optional elec-
tronic automatic transmission performs the backup
lamp switch function on models that are so equipped.
²Brake Lamp Switch- A plunger-type brake
lamp switch is located on the steering column sup-
port bracket under the instrument panel and actu-
ated by the brake pedal arm.
²Body Control Module- The Body Control
Module (BCM) is located on the Junction Block (JB)
under the driver side outboard end of the instrument
panel. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/BODY CONTROL MODULE
- DESCRIPTION).
²Daytime Running Lamp Relay- Vehicles
manufactured for sale in Canada use a solid state
Daytime Running Lamps (DRL) relay installed in the
Junction Block (JB) instead of the conventional high
beam relay.
²Front Fog Lamp Relay- Vehicles equipped
with the optional front fog lamps have a front fog
lamp relay located in the Junction Block (JB).
²Hazard Switch- The hazard switch is located
near the center of the instrument panel and includes
the integral electronic combination flasher circuitry
for the hazard warning system and the turn signal
system.
²Headlamp Leveling Motor- A headlamp lev-
eling actuator motor is located on the back of each
headlamp housing of vehicles manufactured for cer-
tain markets where this equipment is required.
²Headlamp Leveling Switch- A thumbwheel
actuated headlamp leveling switch is mounted in the
driver side inboard instrument panel trim bezel of
vehicles manufactured for certain markets where this
equipment is required.
²High Beam Relay- A high beam relay is
located in the Junction Block (JB) of all vehicles
except those that are manufactured for sale in Can-
ada. Canadian vehicles have a solid state Daytime
Running Lamps (DRL) relay in the JB instead of the
high beam relay.
²Low Beam Relay- A low beam relay is located
in the Junction Block (JB) of all vehicles.
²Multi-Function Switch- The multi-function
switch is located on the top of the steering column,
just below the steering wheel. The multi-function
switch includes a left (lighting) control stalk and a
right (wiper) control stalk. The left control stalk is
dedicated to providing almost all of the driver con-
1 - HEADLAMP UNIT (2)
2 - REPEATER LAMP UNIT (2)
3 - FRONT POSITION LAMP (2)
4 - FRONT LAMP UNIT (2)
5 - FRONT FOG LAMP (2)6 - CENTER HIGH MOUNTED STOP LAMP UNIT
7 - REAR LAMP UNIT
8 - LICENSE PLATE LAMP UNIT
8L - 4 LAMPS/LIGHTING - EXTERIORKJ
LAMPS/LIGHTING - EXTERIOR (Continued)