JEEP CHEROKEE 1994 Service Repair Manual

(3) For XJ vehicles, position the bezel and the lens
on the lamp housing. Install the screws that attach
the bezel and lens to the lamp housing. Tighten the
screws securely.
(4) For YJ vehicles, position the stone shield and
reflector on the lamp housing. Install the screws that
attach the stone shield and the reflector to the lamp
housing. Tighten the screws securely.
FOG LAMP SWITCH REPLACEMENT
REMOVALÐXJ VEHICLES
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. 37).
(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.
INSTALLATIONÐXJ VEHICLES
(1) Squeeze the tabs on the side of the fog lamp
switch and insert the switch in the instrument panel
cavity.
(2) Connect the wire harness connector to the
switch.
(3) Install the fog lamp switch cover.
(4) Position the bezel on the instrument panel and
install the attaching screws. Tighten the screws se-
curely.
REMOVALÐYJ VEHICLES
The fog lamp switch is located on the instrument
panel at the right of the steering column. The fog
lamp circuit relay is located below the left headlamp.
(1) Disconnect the battery negative cable.
(2) Remove the I/P shroud retaining screws (Fig.
36).(3) Move the I/P shroud toward the steering wheel.
(4) Apply upward force to the I/P shroud and
downward force to the indicator panel. This will re-
lease the indicator panel holding tabs (Fig. 39).
(5) Remove the shroud from the instrument panel.
(6) Remove the fog lamp switch retaining screws.
(7) Disconnect the wire harness connector from the
fog lamp switch.
(8) Remove the fog lamp switch from the instru-
ment panel cavity.
Fig. 37 Instrument Panel BezelÐXJ Vehicles
Fig. 38 Instrument Panel ShroudÐYJ Vehicles
Fig. 39 Indicator Panel Holding TabsÐYJ Vehicles
8L - 14 LAMPSJ

INSTALLATIONÐYJ VEHICLES
(1) Position the fog lamp switch in the instrument
panel cavity and connect the wire harness connector
to the switch.
(2) Install the fog lamp switch retaining screws.
Tighten the screws securely.
(3) Position the I/P shroud under the steering col-
umn.
(4) Slide the indicator panel holding tabs into the
shroud notches.
(5) Place the assembled I/P shroud over the indica-
tor lamp foam gasket.
The foam gasket located on the back side of
the indicator panel overlay is fragile. If it is ei-
ther torn or distorted, replace it.
(6) Install and tighten the indicator panel retain-
ing screws.
(7) Install the remaining shroud screws. Tighten
the screws securely.
(8) Connect the battery negative cable.
FOG LAMP REPLACEMENT
REMOVALÐXJ VEHICLES
(1) Disconnect the fog lamp wire harness connector
(Fig. 40).
(2) Remove the retaining nut and washer from
each side of the support bracket and remove the fog
lamp from the support bracket (Fig. 41).
INSTALLATIONÐXJ VEHICLES
(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.
REMOVALÐYJ VEHICLES
(1) Disconnect the fog lamp wire harness connec-
tor.(2) Remove the fog lamp nut(s), washers(s) and
bolt(s) from the support bracket.
(3) Remove the fog lamp from the support bracket.
INSTALLATIONÐYJ VEHICLES
(1) Position the fog lamp on the support bracket.
(2) Install the fog lamp bolt(s), washer(s) and
nut(s) in the support bracket.
(3) Connect the fog lamp wire harness connector.
SENTINEL HEADLAMP DELAY MODULEÐXJ
VEHICLES
SERVICE INFORMATION
The Headlamp Module delays the de-activation of
the headlamps for 45615 seconds after the ignition
Fig. 40 Fog Lamp Wire Harness ConnectorÐXJ
Vehicles
Fig. 41 Fog LampÐXJ Vehicles
Fig. 42 Round-Shaped Fog Lamp
JLAMPS 8L - 15

switch is turned OFF. The driver engages the module
by turning the ignition switch OFF, then turning the
headlamps OFF.
The headlamp delay module is located behind the
I/P next to the headlamp switch.
HEADLAMP DELAY MODULE REPLACEMENTÐXJ
VEHICLES
The headlamp delay module is attached to the in-
side of the instrument panel to the right of the head-
lamp switch.
REMOVAL
(1) Remove the lower instrument panel.
(2) Remove the screw that attaches the module to
the inside of the instrument panel.
(3) Disconnect the wire harness connector and re-
move the module from the instrument panel.
INSTALLATION
(1) Position the module inside the I/P and connect
the wire harness connector to the module.
(2) Install the screw that attaches the module to
the inside of the instrument panel.(3) Remove the lower instrument panel.
HEADLAMP DELAY FUNCTION TROUBLE
DIAGNOSISÐXJ VEHICLES
DELAY FUNCTION INOPERATIVE
(1) Remove, inspect and test the HD LP DLY fuse.
Replace if defective.
(2) Remove the delay module from the I/P. Do not
disconnect the wire harness connector. Turn the igni-
tion switch to the RUN position. Place the headlamp
switch in headlamps ON position. Turn the ignition
to the OFF position for a resistance test.
(3) Measure the resistance from the delay module
terminal 4 to vehicle body ground. The ohmmeter
should indicate zero ohms. If not, repair the open cir-
cuit in the wire harness to vehicle body ground.
(4) Measure the voltage between the delay module
terminal 8 and vehicle body ground. The voltmeter
should indicate battery voltage. If not, repair the
open circuit in the wire harness to the instrument
cluster indicator connector terminal 14.
(5) Measure the voltage between the delay module
terminal 6 and vehicle body ground. The voltmeter
should indicate battery voltage. If not, repair the
open circuit in the wire harness to the headlamp
switch.
(6) Measure the voltage between the delay module
terminal 2 and vehicle body ground. The voltmeter
should indicate battery voltage. If not, repair the
open circuit in the wire harness to the fuse.
DAYTIME RUNNING LIGHTS (CANADA ONLY)
SERVICE INFORMATION
The Daytime Running Lights (Headlamps) System
is installed on vehicles manufactured for sale in Can-
ada only. The headlamps are illuminated when the
ignition switch is turned to the ON position. The
DRL module receives a vehicle-moving signal from
the vehicle speed sensor. This provides a constant
headlamps-oncondition as long as the vehicle is
moving. The lamps are illuminated at less than 50
percent of normal intensity.
DRL MODULE REPLACEMENT
REMOVALÐXJ VEHICLES
The Daytime Running Lights (DRL) module is lo-
cated on the right fender inner panel adjacent to the
dash panel (Fig. 45).
(1) Disconnect the wire harness connector from the
module.
(2) Remove the screws that attach the module to
the fender inner panel.
(3) Remove the module from the fender inner
panel.
Fig. 43 Rectangular-Shaped Fog Lamp
Fig. 44 Fog LampÐYJ Renegade
8L - 16 LAMPSJ

INSTALLATIONÐXJ VEHICLES
(1) Position the module on the right fender inner
panel.
(2) Install the attaching screws. Tighten the
screws securely.
(3) Connect the wire harness connector to the mod-
ule.
REMOVALÐYJ VEHICLES
The daytime running light module is located on the
left fender inner panel below the engine air cleaner
housing.
(1) Remove the engine air cleaner housing for ac-
cess to the DRL module.
(2) Disconnect the wire harness connector from the
module.
(3) Remove the screws that attach the module to
the fender inner panel.
(4) Remove the module from the fender inner
panel.
INSTALLATIONÐYJ VEHICLES
(1) Position the DRL module on the left, fender in-
ner panel.
(2) Install the attaching screws. Tighten the
screws securely.
(3) Connect the wire harness connector to the mod-
ule.
(4) Install the air cleaner housing.
UNDERHOOD LAMP SERVICE INFORMATION
When equipped, the underhood lamp is installed on
the hood right, rear inner panel for all Jeeptvehi-cles. The lamp is illuminated when the hood is
opened. The switch provides automatic ON/OFF func-
tions each time the hood is opened and closed.
Fig. 45 Daytime Running Lights (DRL) ModuleÐXJ
Vehicles
Fig. 46 Underhood LampÐXJ Vehicles
Fig. 47 Underhood LampÐYJ Vehicles
Fig. 48 Underhood Lamp Components
JLAMPS 8L - 17

UNDERHOOD LAMP BULB REPLACEMENT
REMOVALÐALL VEHICLES
(1) Disconnect the wire harness connector from the
underhood lamp.
(2) Rotate the bulb counter-clockwise and remove
it from the lamp base socket.
INSTALLATIONÐALL VEHICLES
(1) Insert a replacement bulb in the lamp base
socket and rotate it clockwise.
(2) Connect the wire harness connector to the
lamp.
UNDERHOOD LAMP REPLACEMENT
REMOVALÐALL VEHICLES
(1) Disconnect the wire harness connector from the
lamp.(2) Rotate the bulb counter-clockwise and remove
it from the lamp base socket.
(3) Remove the screw that attaches the lamp re-
flector and support bracket to the hood inner panel.
(4) Remove the lamp from the hood inner panel.
INSTALLATIONÐALL VEHICLES
(1) Position the underhood lamp on the hood inner
panel.
(2) Install the attaching screw through the lamp
and into the hood panel. Tighten the screw securely.
(3) Insert a replacement bulb in the lamp base
socket and rotate it clockwise.
(4) Connect the wire harness connector to the
lamp.
8L - 18 LAMPSJ

INTERIOR LAMPS
INDEX
page page
Dome Lamp Replacement.................. 20
Dome/Courtesy Lamp Service Information...... 19
Dome/Courtesy Lamp Trouble Diagnosis....... 19
Hardtop Dome/Cargo Lamp Bulb ReplacementÐYJ
Vehicles.............................. 20Illuminated Entry System Service Information . . . 20
Illuminated Entry System Trouble Diagnosis.... 21
Lighted Vanity Mirror...................... 19
Lighted Vanity Mirror Trouble Diagnosis....... 19
Overhead ConsoleÐXJ Vehicles............. 20
DOME/COURTESY LAMP SERVICE INFORMATION
XJ VEHICLES
Voltage is applied at all times via the dome lamp
fuse to each of the interior lamp bulbs. The interior
lamp bulbs illuminate when they are connected to
body ground via the switch:
²headlamp switch,
²glove box switch,
²door pillar switch, and
²liftgate switch (if the cargo lamp is ON.)
If equipped with Security Alarm Module, refer to
Group 8QÐVehicle Theft Security System.
YJ VEHICLES
The dome/cargo and courtesy lamps are controlled
via ON/OFF switches. The ON/OFF switches are in
the lamp ground circuits. Voltage via the dome/cour-
tesy lamp fuse is applied directly to the lamp bulbs.
When either door is opened, the door pillar switch
contacts close and provide a direct path to vehicle
body ground.
The cargo/cargo and courtesy lamps can also be
turned on via the interior lamp illumination rheo-
stat.
DOME/COURTESY LAMP TROUBLE DIAGNOSIS
ALL LAMPS INOPERATIVE
(1) Rotate the headlamp switch rheostat clockwise.
The lamps should light. If not OK, remove, inspect
and test the dome lamp fuse. Replace if bad.
(2) If the fuse is OK, repair the open circuit in the
wire harness to vehicle body ground.
ONE LAMP INOPERATIVE
(1) Measure the resistance across the bulb holder
terminals. The ohmmeter should indicate zero ohms.
If not, replace the bulb.
(2) Measure the voltage between the voltage side
of the bulb holder and vehicle body ground. The volt-
meter should indicate battery voltage. If not, repair
the open circuit in the wire harness to the splice.
LAMPS INOPERATIVE WITH ONE OR MORE
DOORS OPENED
(1) Remove the inoperative switch from the door
pillar and connect the switch wire directly to ground.
The lamp should light.
(2) If not, check for an open circuit in black
(ground) wire. Repair as necessary. If lamps still do
not light, replace the switch.
LIGHTED VANITY MIRROR
SERVICE INFORMATIONÐXJ VEHICLES
Both the driver and the front passenger sunvisor
can be equipped with a lighted vanity mirror. A
lamp located at each side of the vanity mirror. The
lamps are switched ON automatically when the mir-
ror cover is lifted (Fig. 1).
Voltage is applied directly to the vanity lamp bulbs
via the dome lamp fuse.
LIGHTED VANITY MIRROR TROUBLE DIAGNOSIS
VANITY LAMPS INOPERATIVE
(1) Remove, inspect and test the dome lamp fuse.
Replace if defective.
(2) Test the dome lamp operation. If OK, go to the
next step. If not OK, repair the open circuit in the
wire harness from the splice.
Fig. 1 Lighted Vanity Mirror
JLAMPS 8L - 19

(3) Measure the voltage between the pink wire on
the switch connector and vehicle body ground. The
voltmeter should indicate battery voltage. If not OK,
repair the open circuit in the wire harness from the
splice.
(4) Connect a jumper wire from the ground side of
the switch to a good vehicle body ground. Measure
the resistance to vehicle body ground. The ohmmeter
should indicate zero ohms. If not, repair the open cir-
cuit in the wire harness to vehicle body ground.
DOME LAMP REPLACEMENT
REMOVALÐXJ VEHICLES
(1) Remove the dome lamp lens by squeezing it at
both sides. This will separate the lens retainer tabs
from the lamp housing shoulders.
(2) Pull the lens downward to remove it from the
lamp housing.
(3) Remove the lamp housing retainer clips (Fig.
2).
(4) Disconnect the wire harness connector.
(5) Remove the lamp housing from the headliner
cavity.
INSTALLATIONÐXJ VEHICLES
(1) Position the dome lamp housing at the head-
liner cavity.
(2) Connect the wire harness connector.
(3) Install the lamp housing retainer clips (Fig. 2).
(4) Position the lens at the lamp housing and force
it upward into the housing until the retainer tabs
are seated on the lamp housing shoulders.
HARDTOP DOME/CARGO LAMP BULB
REPLACEMENTÐYJ VEHICLES
REMOVAL
(1) Remove the dome/cargo lamp lens by squeezing
it at both sides. This will separate the lens retainer
tabs from the lamp housing shoulders (Fig. 3).
(2) Remove the lens from the lamp housing.
(3) Pull the bulb straight out to remove from the
bulb holder.
INSTALLATION
(1) Insert the replacement bulb in the bulb holder.
(2) Position lens at the lamp housing and force it
into the housing until the retainer tabs are seated.
OVERHEAD CONSOLEÐXJ VEHICLES
MAP READING LAMP LENS REMOVAL
(1) Make a straight hook at the end of a large pa-
per clip or wire (approximately 1.5-mm/0.06-in diam-
eter).
(2) Insert the wire hook into the hole in the lamp
lens and pull downward to detach the lens from the
lamp housing (Fig. 4).
MAP READING LAMP LENS INSTALLATION
(1) Insert the tab at the front of the lamp lens into
the slot in the lamp housingÐshown by arrow 1 in
Figure 5.
(2) Force the rear of the lens upward until it is
seated in the lamp housingÐshown by arrow 2 in
Figure 5.
ILLUMINATED ENTRY SYSTEM SERVICE
INFORMATION
The Illuminated Entry System that is activated by
the system relay (TAN). The relay is located on a
bracket (with 3 relays) behind the instrument panel.
The relay receives input from the door pillar
Fig. 2 Dome Lamp Removal/InstallationÐXJ
Vehicles
Fig. 3 Hardtop Dome/Cargo LampÐYJ Vehicles
8L - 20 LAMPSJ

switches, the keyless entry system, and the ignition
switch (when in the RUN position). When correct in-
put is received, the entry module timer immediately
begins the timing-out process. The timing-out process
requires approximately 3066 seconds.
The illuminated entry system also operates
when a door is opened to exit the vehicle. When
the door is closed the interior illumination will
continue for the remaining portion of the 30 sec-
onds.
ILLUMINATED ENTRY SYSTEM TROUBLE
DIAGNOSIS
The Illuminated Entry System relay is located on a
bracket behind the instrument panel.
(1) Ensure that the ignition switch is in the Off po-
sition.
(2) Open and immediately close the driver-side
door. The interior courtesy lamps should immediately
illuminate.
(3) Open driver-side door, enter the vehicle, close
the door and turn the ignition switch to the RUN po-sition. The courtesy lamps should go out. Turn the
ignition switch to the OFF position before exiting ve-
hicle.
(4) When exiting the vehicle, the courtesy lamps
should remain illuminated after the door is closed.
(5) From outside the vehicle, open and close the
passenger-side door. The courtesy lamps should illu-
minate.
RELAY BENCH TEST
(1) Attach a ``jumper'' wire to pin 1. Momentarily
connect pin 1 (battery negative terminal/ground) to
pin 4. The test bulb should light for 3066 seconds,
then go out. If not, replace the relay.
(2) Momentarily connect pin 1 (battery negative
terminal/ground) to pin 4. The test bulb should light.
Attach a ``jumper'' wire to pin 5 and momentarily
connect pin 5 to pin 2. The test bulb should go out. If
not, replace the relay.
(3) Momentarily connect pin 1 (battery negative
terminal/ground) to pin 3. The test bulb should light.
Next, momentarily connect pin 5 to pin 2 (B+) and
the test bulb should go out. If not, replace the relay.
Fig. 4 Map Reading Lamp Lens Removal
Fig. 5 Map Reading Lamp Lens Installation
Fig. 6 Relay Bench Test
JLAMPS 8L - 21

ILLUMINATED ENTRY SYSTEM TROUBLE DIAGNOSIS
8L - 22 LAMPSJ

SPECIFICATIONS
XJ EXTERIOR LAMPS
YJ EXTERIOR LAMPS
XJ INTERIOR LAMPS
YJ INTERIOR LAMPS
JLAMPS 8L - 23