JEEP YJ 1995 Service And Repair Manual

LAMPS
CONTENTS
page page
BULB APPLICATIONÐXJ VEHICLES......... 18
GENERAL INFORMATION.................. 1INTERIOR LAMPS....................... 16
SERVICE PROCEDURES................... 6
GENERAL INFORMATION
Each vehicle is equipped with various lamp assem-
blies. A good ground is necessary for proper lighting
operation. Grounding is provided by the lamp socket
when it comes in contact with the metal body, or
through a separate ground wire.
When changing lamp bulbs check the socket for
corrosion. If corrosion is present, clean it with a wire
brush and coat the inside of the socket lightly with
Mopar Multi-Purpose Grease or equivalent.
DIAGNOSTIC PROCEDURESÐXJ
When a vehicle experiences problems with the
headlamp system, verify the condition of the batteryconnections, charging system, headlamp bulbs, wire
connectors, relay, high beam dimmer switch and
headlamp switch. Refer to Group 8W, Wiring Dia-
grams for component locations and circuit informa-
tion.
Always begin any diagnosis by testing all of the
fuses and circuit breakers in the system. Refer to
Group 8W, Wiring Diagrams.
JLAMPS 8L - 1

HEADLAMP DIAGNOSIS
8L - 2 LAMPSÐXJ VEHICLESJ

FOG LAMP DIAGNOSIS
JLAMPSÐXJ VEHICLES 8L - 3

MULTI-FUNCTION SWITCH TESTING
PROCEDURESÐXJ
The multi-function switch contains electrical cir-
cuitry for:
²Headlamp Dimmer Switch.
²Passing Lights.
²Turn Signals.
²Hazard Warning.
²Windshield Wiper.
²Pulse Wiper.
²Windshield Washer.
This integrated switch is mounted to the left hand
side of the steering column. Should any function of
the switch fail, the entire switch must be replaced.
The multi-function switch also serves as a fog lamp
lock-out circuit. The circuit to the fog lamp switch is
completed only when the dimmer switch is in the low
beam position.
SWITCH TEST
(1) Disconnect battery negative cable.
(2) Remove lower instrument panel screws along
bottom edge of steering column (Fig. 1).
(3) Remove lower instrument panel/knee blocker.
(4) Remove tilt lever.
(5) Remove upper and lower column shrouds to
gain access to the switch connector (Fig. 2).
(6) Remove lower fixed column shroud.
(7) Loosen steering column upper bracket nuts. Do
not remove nuts.
(8) Move upper fixed column shroud to gain access
to rear of multi-function switch.
(9) Remove switch connector (Fig. 3 and 4).
Fig. 1 Lower Instrument Panel/Knee BlockerÐXJ
Vehicles
Fig. 2 Steering Column Shrouds
Fig. 3 Multi-function Switch Connector
8L - 4 LAMPSÐXJ VEHICLESJ

(10) Use an ohmmeter to test for continuity be-
tween the terminals of the switch as shown in the
continuity chart (Fig. 5).(11) Refer to Service Procedures for assembly.
Fig. 4 Steering Column Connectors
Fig. 5 Dimmer Switch Continuity Chart
JLAMPSÐXJ VEHICLES 8L - 5

SERVICE PROCEDURES
INDEX
page page
Back-Up/Rear Turn Signal/Tail Lamp Bulb
ReplacementÐXJ....................... 12
Center High Mounted Stop Lamp (CHMSL)ÐXJ . . 12
Daytime Running Lights (Canada Only)ÐXJ..... 15
Drl Module ReplacementÐXJ................ 15
Fog Lamp ReplacementÐXJ.................. 9
Fog Lamp Switch ReplacementÐXJ........... 10
Fog LampsÐXJ........................... 7
Front Park/Turn Signal Lamp Bulb
ReplacementÐXJ........................ 9
Headlamp Alignment PreparationÐXJ........... 6
Headlamp AlignmentÐXJ.................... 6
Headlamp Bulb ReplacementÐXJ.............. 7Headlamp Delay Function Trouble DiagnosisÐXJ . 14
Headlamp Delay Module ReplacementÐXJ...... 14
Headlamp SwitchÐXJ...................... 10
Headlamp/Fog Lamp Adjustment Using Alignment
ScreenÐXJ............................. 7
License Plate LampÐXJ.................... 12
Multi-Function Switch Service ProceduresÐXJ.... 11
Sentinel Headlamp Delay ModuleÐXJ.......... 14
Side Marker Lamp Bulb ReplacementÐXJ....... 10
Underhood Lamp Bulb ReplacementÐXJ....... 13
Underhood Lamp ReplacementÐXJ........... 13
Underhood Lamp Service InformationÐXJ....... 12
HEADLAMP ALIGNMENTÐXJ
Headlamps can be aligned using the screen method
provided in this section. Alignment Tool C4466-A or
equivalent can also be used. Refer to instructions
provided with the tool for proper procedures.The
preferred headlamp alignment setting is 0 for
the left/right adjustment and 1(down for the
up/down adjustment.
HEADLAMP ALIGNMENT PREPARATIONÐXJ
(1) Verify headlamp dimmer switch and high beam
indicator operation.
(2) Correct defective components that could hinder
proper headlamp alignment.
(3) Verify proper tire inflation.
(4) Clean headlamp lenses.
(5) Verify that luggage area is not heavily loaded.
Fig. 1 Headlamp Alignment ScreenÐTypical
8L - 6 LAMPSÐXJ VEHICLESJ

(6) Fuel tank should be FULL. Add 2.94 kg (6.5
lbs.) of weight over the fuel tank for each estimated
gallon of missing fuel.
HEADLAMP/FOG LAMP ADJUSTMENT USING
ALIGNMENT SCREENÐXJ
ALIGNMENT SCREEN PREPARATION
(1) Position vehicle on a level surface perpendicu-
lar to a flat wall 7.62 meters (25 ft) away from front
of headlamp lens (Fig. 1).
(2) If necessary, tape a line on the floor 7.62
meters (25 ft) away from and parallel to the wall.
(3) Measure from the floor up 1.27 meters (5 ft)
and tape a line on the wall at the centerline of the
vehicle. Sight along the centerline of the vehicle
(from rear of vehicle forward) to verify accuracy of
the line placement.
(4) Rock vehicle side-to-side three times to allow
suspension to stabilize.
(5) Jounce front suspension three times by pushing
downward on front bumper and releasing.
(6) Measure the distance from the center of head-
lamp lens to the floor. Transfer measurement to the
alignment screen (with tape). Use this line for up/
down adjustment reference.
(7) Measure distance from the centerline of the ve-
hicle to the center of each headlamp being aligned.
Transfer measurements to screen (with tape) to each
side of vehicle centerline. Use these lines for left/
right adjustment reference.
ADJUSTMENT
(1) Remove screws and both headlamp bezels.
(2) Clean front of the headlamps.
(3) Place headlamps on LOW beam.
(4) Cover front of the headlamp that is not being
adjusted.
(5) Turn vertical adjustment screw (Fig. 2) until
the headlamp beam pattern on screen/wall is similar
to the pattern depicted in Figure 1.
When using a headlamp aiming screen:
²Adjust the headlamps so that the beam horizontal
position is at 0.
²Adjust the beam vertical position is 25 mm (1 in)
downward from the lamp horizontal centerline.
(6) Rotate the horizontal adjustment screw until
the headlamp beam pattern on the aiming screen/
wall similar to the pattern in Figure 1.
(7) Cover front of the headlamp that has been ad-
justed and adjust the other headlamp beam as in-
structed above.
(8) Install headlamp bezels. Tighten the screws se-
curely.
FOG LAMP ADJUSTMENT
Prepare an alignment screen. Refer to Alignment
Screen Preparation paragraph in this section. A prop-erly aligned fog lamp will project a pattern on the
alignment screen 100 mm (4 in.) below the fog lamp
centerline and straight ahead (Fig. 3)
HEADLAMP BULB REPLACEMENTÐXJ
REMOVAL
(1) Remove the screws and the headlamp bezel
(Fig. 4).
(2) Remove the screws and headlamp bulb retain-
ing ring.
(3) Disconnect the headlamp bulb wire harness
connector and remove the bulb from the bucket.
INSTALLATION
(1) Position the bulb in the bucket and connect the
wire harness connector.
(2) Position retaining ring on the headlamp bulb
and install screws.
(3) Install the headlamp bezel. Tighten the screws
securely.
FOG LAMPSÐXJ
Fog lamps are turned OFF by the circuit relay
when the high beam driving lamps are turned ON.
Fog lamps may be operated ONLY when low beam
headlamps are ON. If the headlamps are switched to
high beam, the low beam lamps and fog lamps will
turn OFF. The fog lamps will go back on when the
high beams are switched OFF.
The indicator lamp on the fog lamp switch will go:
²OFF when the high beams lamps are switched
ON.
²ON when the high beam lamps are switched OFF.
Fig. 2 Headlamp Beam Adjustment Screws
JLAMPSÐXJ VEHICLES 8L - 7

FOG LAMP BULB REPLACEMENT
CAUTION: Do not touch the bulb glass with fingers
or other oily surfaces. Reduced bulb life will result.(1) Remove the screws attaching the bezel to the
lamp body (Fig. 5). Remove the bezel from the lamp
body.
(2) Remove the lens and reflector from the lamp
body.
(3) Remove the bulb holder from the lens and re-
flector.
(4) Remove the lamp element from the bulb holder.
(5) To install, reverse the removal procedure.
Fig. 3 Fog Lamp Alignment ÐTypical
Fig. 4 Headlamp Components
Fig. 5 Fog Lamp Components
8L - 8 LAMPSÐXJ VEHICLESJ

FOG LAMP REPLACEMENTÐXJ
REMOVAL
(1) Disconnect the fog lamp wire harness connector
(Fig. 6).
(2) Remove the retaining nut and washer from
each side of the support bracket and remove the fog
lamp from the support bracket (Fig. 7).
INSTALLATION
(1) Position the fog lamp in the support bracket
and install the washer and nut at each side of the
bracket. Tighten the nuts securely.
(2) Connect the fog lamp wire harness connector.
FRONT PARK/TURN SIGNAL LAMP BULB
REPLACEMENTÐXJ
REMOVAL
(1) Remove the headlamp bezel screw and the side
marker lamp lens/housing screw (Fig. 8).
(2) Separate the side marker lamp from the head-
lamp bezel and remove the screws from the head-
lamp bezel (Fig. 9).
Fig. 6 Fog Lamp Wire Harness ConnectorÐXJ
Vehicles
Fig. 7 Fog Lamp
Fig. 8 Headlamp Bezel & Side Marker Lamp
Fig. 9 Headlamp Bezel Removal/Installation
JLAMPSÐXJ VEHICLES 8L - 9

(3) Remove screws from the park/turn signal lamp
housing (Fig. 10).
(4) Separate the lamp housing from the headlamp
bezel.
(5) Rotate the bulb socket one-third turn and re-
move it from the lamp housing.
(6) Remove bulb from socket.
INSTALLATION
(1) Install a replacement bulb in the socket.
(2) Install bulb and socket in the lamp housing.
(3) Position the park/turn signal lamp housing on
the headlamp bezel.
(4) Install lamp housing screws. Tighten the
screws.
(5) Install the outer screws in the headlamp bezel.
Tighten the screws.
(6) Position the side marker lamp lens/housing on
the headlamp bezel.
(7) Install side marker lamp lens/housing screws
and headlamp bezel (Fig. 8). Tighten the screws.
SIDE MARKER LAMP BULB REPLACEMENTÐXJ
REMOVAL
(1) Remove the screws from the side marker lamp
lens and housing. Separate lens and housing from
the headlamp bezel (Fig. 11).
(2) Remove the bulb and socket from the back side
of the lamp housing.
(3) Remove bulb from socket.
INSTALLATION
(1) Install a replacement bulb in the socket.
(2) Install bulb and socket in the back of side
marker lamp housing.
(3) Position the side marker lens and housing on
the headlamp bezel (Fig. 11).
(4) Install the side marker lamp screws. Tighten
the screws.
HEADLAMP SWITCHÐXJ
To remove or replace the headlamp switch. Refer to
Group 8E, Instrument Panel and Gauges.
FOG LAMP SWITCH REPLACEMENTÐXJ
REMOVAL
The fog lamp switch is located on the instrument
panel at the left of the steering column.
(1) Remove instrument panel bezel attaching
screws and remove the bezel (Fig. 12).
(2) Remove the fog lamp switch cover.
(3) Disconnect the wire harness connector from the
switch.
(4) Squeeze the tabs on the side of the switch and
remove the switch from the instrument panel cavity.
Fig. 10 Park/Turn Signal Lamp Housing RemovalFig. 11 Side Marker Lamp
Fig. 12 Instrument Panel Bezel
8L - 10 LAMPSÐXJ VEHICLESJ