key JEEP CHEROKEE 1995 Service Owner's Manual

(30) Remove key warning buzzer switch and re-
taining clip with a paper clip inserted below retainer
so that retainer is flattened (Fig. 24).
Do not attempt to remove buzzer switch and
clip separately. The clip could fall into the column
jacket.
(31) Remove ignition lock cylinder retaining screw
and pull lock cylinder out of column housing (Fig. 25)(32) Remove screws that attach housing and
shroud assembly to column jacket and carefully re-
move housing and shroud assembly (Fig. 26).
DO NOT let dimmer switch rod, lock pin or
lock rack fall out.
(33) Remove turn/hazard/wiper lever by pulling it
straight out of column.
(34) Remove wiper switch cover from back of hous-
ing and shroud assembly (Fig. 27). If equipped with
column shift, remove screw holding the cover on.
(35) Remove pivot screw from housing and remove
wiper switch.
Fig. 24 Buzzer Switch Remove
Fig. 25 Lock Cylinder Remove/Install
Fig. 26 Steering Column Housing Remove/Install
Fig. 27 Remove Pivot Screw
JWIPER AND WASHER SYSTEMS - YJ 8K - 23

(36) Install a new switch and switch cover.
(37) Push on dimmer switch rod to make sure it is
connected then carefully position housing and shroud
assembly to column (Fig. 28).
Make sure nylon spring retainer on lock pin
is positioned forward of the retaining slot of
lock rack.
Position first tooth of gear (farthest from the
block tooth) with the most forward tooth of
lock rack.
(38) Install screws that attach housing and shroud
assembly to column jacket and carefully mate hous-
ing and shroud assembly.
(39) Insert key and lock cylinder and test that lock
pin extends fully when key is moved to lock position.
(40) Reverse removal procedures to complete in-
stallation.
CAUTION: When installing a wiper switch, make
sure wires are laying flat on bottom inside of col-
umn.
On vehicles equipped with column shift, in-
stall PRNDL cable clip with shift indicator on
N (neutral). Move selector through the range
and make sure it lines up with each letter.
(41) Install steering wheel. Tighten steering wheel
nut to 34 Nzm (25 ft. lbs.) torque.
LIFTGATE WIPER/WASHER SWITCH REMOVE/
INSTALL
(1) Remove the left instrument panel bezel. Refer
to Group 8E - Instrument Panel and Gauges for pro-
cedure.(2) Remove the switch housing panel.
(3) Unplug the switch connector. Slightly depress
the switch mounting tabs and remove the switch
(Fig. 29).
WASHER PUMP REMOVE/INSTALL
(1) Remove 3 washer reservoir mounting screws
(Fig. 30 or 31).
(2) Disconnect hose(s) from pump(s).
(3) Drain washer reservoir.
(4) Using a deep socket, remove filter nut from bot-
tom inside reservoir and remove pump.
(5) Reverse removal procedures to install.
LIFTGATE WASHER NOZZLE REMOVE/INSTALL
(1) From inside the vehicle remove the motor trim
cover.
Fig. 28 Check Dimmer Switch Rod and Lock Pin
Fig. 29 Liftgate Wiper/Washer Switch
Fig. 30 Washer Reservoir and Pump
8K - 24 WIPER AND WASHER SYSTEMS - YJJ

POWER LOCKS
CONTENTS
page page
DIAGNOSIS............................. 2
GENERAL INFORMATION.................. 1SERVICE PROCEDURES................... 8
GENERAL INFORMATION
Power locks are optional equipment on XJ (Chero-
kee) models. Power windows and the keyless entry
system are included on vehicles equipped with the
power lock option. All doors and the liftgate can be
locked and unlocked electrically by operating the
switch on either front door panel, or by operating the
lock and unlock buttons of the remote keyless entry
transmitter. The power lock and keyless entry sys-
tems operate with battery power supplied indepen-
dent of the ignition switch.
Following are general descriptions of the major
components in the power lock system. Refer to Group
8W - Wiring Diagrams for complete circuit descrip-
tions and diagrams. Refer to the owner's manual for
more information on the features and use of these
systems.
POWER LOCK SWITCH
The power locks are controlled by a two-way switch
mounted on the trim panel of each front door. The
switch controls battery feed to the lock and unlock
relays. The door lock switches can not be repaired. If
faulty, the entire switch must be replaced.
POWER LOCK/UNLOCK RELAYS
The power lock and unlock relays are located in the
relay center. The relay center is located on the lower
instrument panel reinforcement behind the lower in-
strument panel and just right of the steering column.
The relays respond to inputs from the power lock
switches and the keyless entry module by sending
the correct battery and ground feeds to the lock mo-
tors. The lock and unlock relays can not be repaired.
If faulty, they must be replaced.
POWER LOCK MOTOR
The locks are actuated by a reversible motor
mounted within each door. The motor direction iscontrolled by the battery and ground feeds from the
power lock/unlock relays. The motor can not be re-
paired. If faulty, the entire motor must be replaced.
KEYLESS ENTRY TRANSMITTER
The keyless entry transmitter is equipped with two
buttons labeled Lock and Unlock. It is also designed
to serve as a key fob and is equipped with a key ring.
Each transmitter has a different vehicle access code,
which must be programmed into the memory of the
keyless entry module in the vehicle in order to oper-
ate the locks. The operating range of the infrared
transmitter signal is up to 4.75 meters (15 feet) from
the receiver.
The transmitter operates on two CR1616 3-volt (or
equivalent) batteries. Typical battery life is from one
to two years.
KEYLESS ENTRY MODULE
The keyless entry module is mounted in a housing
on the headliner near the windshield between the
sunvisors, or inside and towards the rear of the over-
head console (if equipped). This module contains the
keyless entry receiver and program logic for the key-
less entry system.
The keyless entry module has a memory function
to retain the vehicle access code of at least one, and
up to four transmitters. The module receives input
from the remote keyless entry transmitter. In re-
sponse to that input, it is programmed to control out-
puts to the lock and unlock relays. The module can
not be repaired and, if faulty, must be replaced.
JPOWER LOCKS 8P - 1

DIAGNOSIS
As a preliminary system diagnosis, note system op-
eration while you actuate both the Lock and Unlock
functions with the power lock switches and the key-
less entry transmitter. Then, proceed as follows:
²If system fails to function with either the switches
or the transmitter, see Power Lock System diagnosis.
²If system functions with both switches, but not the
transmitter, see Keyless Entry Transmitter diagnosis.
²If system functions with transmitter, but not with
one or both switches, see Power Lock System diagno-
sis.
²If one lock fails to operate with the switches or
transmitter, see Power Lock Motor diagnosis.
POWER LOCK SYSTEM
(1) Inspect fuse 13 in fuseblock module. Replace if
necessary. If OK, measure voltage at battery side of
fuse. There should be 12 volts. If not OK, repair open
from Power Distribution Center.
(2) Remove door switch(es) and measure voltage at
terminal 1. Meter should read battery voltage. If OK,
go to next step. If not OK, repair open to fuse 9 in
fuseblock module.
(3) Check door switch continuity as shown in the
applicable charts on the following pages. If OK, go to
next step. If not OK, replace switch.
(4) The power lock/unlock relays are in the relay
center. The relay center is located on the lower in-
strument panel reinforcement just right of the steer-
ing column (Fig. 1). Remove both relays.
(5) Measure resistance between lock and unlock re-
lay terminal 4 (87A) and ground. Meter should read
zero ohms. If OK, go to next step. If not OK, repair
open to ground.
(6) Measure voltage at terminal 2 (87) of both the
lock and unlock relays. Meter should read battery
voltage. If OK, go to next step. If not OK, repair open
to fuse 13 in fuseblock module.(7) Measure resistance between lock and unlock re-
lay terminal 5 (85) and ground. Meter should read
zero ohms. If OK, go to next step. If not OK, repair
open to ground.
(8) Hold driver's side switch in LOCK position.
Measure voltage at lock relay terminal 3 (86). Meter
should read battery voltage. If OK, go to next step. If
not OK, repair open to driver's side switch.
(9) Hold driver's side switch in UNLOCK position.
Measure voltage at unlock relay terminal 3 (86).
Meter should read battery voltage. If OK, go to next
step. If not OK, repair open to driver's side switch.
(10) Hold driver's side switch in LOCK position.
Measure voltage at lock relay terminal 1 (30). Meter
should read battery voltage. If OK, go to next step. If
not OK, replace lock relay.
(11) Hold driver's side switch in UNLOCK position.
Measure voltage at unlock relay terminal 1 (30).
Meter should read battery voltage. If OK, see Power
Lock Motor diagnosis. If not OK, replace unlock re-
lay.Fig. 1 Power Lock/Unlock Relays
8P - 2 POWER LOCKSJ

POWER LOCK MOTOR
(1) Once it is determined which lock motor is inop-
erative, that motor can be tested. Disconnect the wire
connector at the motor. Apply 12 volts to the motor
terminals to check its operation in one direction. Re-
verse the polarity to check the operation in the other
direction. If OK, repair circuits to power lock/unlock
relays as required. If not OK, replace the motor.
(2) If all lock motors are inoperative, the problem
may be caused by one shorted motor. Disconnecting a
shorted motor will allow the good motors to operate.
Disconnect each motor connector, one at a time, and
re-check both lock and unlock functions while operat-
ing the door lock switch. If disconnecting one motor
causes the other motors to become functional, go
back to step 1 to test the disconnected motor.
KEYLESS ENTRY TRANSMITTER
(1) Depress either transmitter button and note
whether red Light-Emitting Diode (LED) on trans-
mitter case lights. If OK, go to next step. If not OK,
replace batteries as described under Keyless Entry
Transmitter in Service Procedures. Test transmitter
operation. If OK, discard faulty batteries. If not OK,
go to next step.
(2) Perform transmitter program procedure with
suspect transmitter and another known good trans-
mitter, as described in Service Procedures. Test oper-
ation with both transmitters. If both transmitters fail
to operate power locks, see Keyless Entry Module di-
agnosis. If known good transmitter operates power
locks and suspect transmitter does not, replace faulty
transmitter. Be certain to perform transmitter pro-
gram procedure again when replacing faulty trans-
mitter and to erase test transmitter access code from
keyless entry module.
KEYLESS ENTRY MODULE
(1) Check fuse 9 in fuseblock module. If OK, go to
next step. If not OK, replace fuse.
(2) Check for battery voltage at fuse 9. If OK, go to
next step. If not OK, repair circuit from power distri-
bution center.
(3) Access keyless entry module connectors as de-
scribed in Keyless Entry Module Remove/Install.
(4) Unplug module connector from module. Check
connector and receptacle in module for loose, cor-
roded, or damaged terminals and pins. If OK, go to
next step. If not OK, repair as required.
(5) Probe connector cavity for module terminal 1
and check for battery voltage. If OK, go to next step.
If not OK, repair circuit to fuse 9 as required.
(6) Install a jumper wire from connector cavity for
module terminal 1 to connector cavity for module ter-
minal 3. Doors should lock. If OK, go to step 8. If not
OK, go to next step.
(7) Check for continuity between connector cavity
for module terminal 3 and lock relay terminal 3 (86).
There should be continuity. If OK, replace lock relay.
If not OK, repair circuit as required.
(8) Install a jumper wire from connector cavity for
module terminal 1 to connector cavity for module ter-
minal 4. Doors should unlock. If OK, replace module.
If not OK, go to next step.
(9) Check for continuity between connector cavity
for module terminal 4 and unlock relay terminal 3
(86). There should be continuity. If OK, replace un-
lock relay. If not OK, repair circuit as required.
JPOWER LOCKS 8P - 7

SERVICE PROCEDURES
KEYLESS ENTRY TRANSMITTER
To replace transmitter batteries, separate transmit-
ter case by prying gently with a trim stick or other
wide flat-bladed tool at center seam (Fig. 2). Case
snaps open and shut. Replace with CR1616 3-volt
batteries or equivalent (Fig. 3).
TRANSMITTER PROGRAMMING PROCEDURE
(1) Open the driver's door of the vehicle. Leave it
open through the programming procedure.
(2) Move the mechanical door lock lever to the
LOCK position.
(3) Turn the ignition switch to the ON position.
(4) Within 20 seconds, aim a transmitter at the
keyless entry module receiver dome and press the
LOCK button for at least 5 seconds. Once the module
accepts the programming code, the driver's door will
unlock.
(5) Once the first transmitter has been pro-
grammed, additional transmitters (up to 4) may beprogrammed into the module. Within 20 seconds of
the previous transmitter programming, move the me-
chanical door lock lever to the LOCK position. Aim
another transmitter at the receiver dome and press
the LOCK button for at least 5 seconds. The door
lock will cycle again.
(6) To lock the programmed codes into the module,
the ignition switch must be turned OFF and back
ON within 20 seconds after programming the last
transmitter's code. At that time, all previous codes
are erased from the module.
POWER LOCK SWITCH REMOVE/INSTALL
(1) Remove the interior door latch release assem-
bly and control panel retaining screws (Fig. 4).
(2) Disconnect the control linkage and the wire
harness connector.
(3) Remove the latch release and control panel as-
sembly.
(4) The switch is retained to the panel with clips
(Fig. 5). Push in on the retainer part of the clip and
pry the clips.
(5) To install switch, position switch and press in
retainer clips until they snap into position. Reverse
remaining removal procedures to complete installa-
tion.
POWER LOCK MOTOR REMOVE/INSTALL
DOORS
(1) Remove interior door latch release assembly
and control panel retaining screws (Fig. 4).
(2) Disconnect control linkage and wire harness
connector.
(3) Remove latch release and control panel assem-
bly.
Fig. 2 Separate Transmitter Halves
Fig. 3 Battery Install
Fig. 4 Power Window/Lock Control Panel Remove/
Install
8P - 8 POWER LOCKSJ

(6) Drill out 2 rivets and remove motor.(7) Reverse removal procedures to install. Tighten
latch screws to 9 Nzm (7 ft. lbs.).
KEYLESS ENTRY MODULE REMOVE/INSTALL
WITHOUT OVERHEAD CONSOLE
(1) Remove 2 screws attaching receiver housing to
headlining (Fig. 13).
(2) Pull housing toward rear of vehicle to disen-
gage clip.
(3) Disconnect module harness connector.
(4) Remove circuit board from housing.
Fig. 9 Motor Remove/Install
Fig. 10 Liftgate Trim Panel Remove/Install
Fig. 11 Lock Actuator Linkage Clip
Fig. 12 Latch Assembly Remove/Install
Fig. 13 Remove/Install Keyless Entry Housing
8P - 10 POWER LOCKSJ

(5) Reverse removal procedures to install.
WITH OVERHEAD CONSOLE
(1) Remove screw forward of compass unit (Fig.
14).
(2) Flex housing outward while pressing upward to
disengage housing from the rear bracket (arrow 1)
(Fig. 14).
(3) Slide console rearward until the console de-
taches from the front mounting bracket (arrow 2)
(Fig. 14).
(4) While pressing up on rear of console (arrow 1),
slide console forward holding front away from head-
liner (arrow 2). Move console forward until the rear
detaches from headliner and becomes free (Fig. 15).
(5) Disconnect wire harnesses from keyless entry
and compass (Figs. 16 and 17).
(6) Pinch forward area of receiver cover and re-
lease clips. Slide cover out from under rib (Fig. 18).
(7) Remove screw and printed circuit board.
Fig. 14 Remove/Install Overhead Console
Fig. 15 Remove/Install Overhead Console
Fig. 16 Disconnect Wire Harnesses
Fig. 17 Keyless Entry Harness Connector
Fig. 18 Keyless Entry Receiver Cover Remove/
Install
JPOWER LOCKS 8P - 11

(8) Reverse removal procedures to install. Be sure
to flex housing outward near the keyless entry mod-
ule until the console snaps onto the rear mounting
bracket.
POWER LOCK/UNLOCK RELAY REMOVE/INSTALL
The power lock/unlock relays are located in the re-
lay center. The relay center is located on the lower
instrument panel trim cover just right of the steering
column (Fig. 19).
(1) Remove the appropriate relay from the relay
center.
(2) Reverse removal procedure to install.
Fig. 19 Power Lock/Unlock Relays
8P - 12 POWER LOCKSJ

CHIME/BUZZER WARNING SYSTEMS
CONTENTS
page page
DIAGNOSIS............................. 2
GENERAL INFORMATION.................. 1SERVICE PROCEDURES................... 4
GENERAL INFORMATION
This group covers the buzzer warning system,
which is standard equipment on XJ (Cherokee)/YJ
(Wrangler) models. The system provides an audible
warning to the driver when it monitors the following
conditions:
²key is in ignition switch with the driver's door
open
²head or park lamps are on with driver's door open
(XJ only)
²driver's seat belt is not buckled with ignition
switch in ON position.
Following are general descriptions of the major
components in the buzzer warning system. Refer to
Group 8W - Wiring Diagrams for complete circuit de-
scriptions and diagrams.
BUZZER MODULE
The buzzer module is located in the fuseblock mod-
ule under the left end of the instrument panel. It re-
ceives battery voltage at all times from (fuse 15 - XJ,
fuse 3 - YJ) the fuseblock module. It also receives a
second battery feed (fuse 17 - XJ, fuse 9 - YJ) when
the ignition switch is in the ON or START position.
Other inputs to the module include the driver's door
jamb switch, the driver's seat belt switch, the ignition
key-in switch, and the headlamp switch (XJ only). The
only output of the module is a timed 4 to 8 second feed
to the seat belt reminder lamp in the message center of
the instrument cluster. The timer function begins after
the ignition switch is turned to the ON position.
The buzzer module can not be repaired. If faulty, it
must be replaced.
DRIVER'S DOOR JAMB SWITCH
The driver's door jamb switch is mounted to the
driver's door hinge pillar. The switch closes a path to
ground for the buzzer module through the key-in
switch or headlamp switch (XJ only) when the driv-
er's door is opened, and opens when the driver's door
is closed. This switch can not be repaired. If faulty, it
must be replaced.
IGNITION KEY-IN SWITCH
XJ MODELS
The key-in switch is integral to the ignition switch,
which is mounted on the right side of the steering col-
umn. It closes a path to ground for the buzzer module
when the ignition key is inserted in the ignition lock cyl-
inder and the driver's door jamb switch is closed (door
open). The switch opens when the key is removed from
the ignition lock cylinder. This switch can not be re-
paired. If faulty, the entire ignition switch must be re-
placed. Refer to Group 8D - Ignition Systems for service
procedures.
YJ MODELS
The key-in switch is mounted within the steering col-
umn in the lock cylinder housing. It closes a path to
ground for the buzzer module when the ignition key is
inserted in the ignition lock cylinder and the driver's
door jamb switch is closed (door open). The switch opens
when the key is removed from the ignition lock cylinder.
This switch is available for service replacement. Refer
to Group 19 - Steering for service procedures.
HEADLAMP SWITCH (XJ ONLY)
The headlamp switch is located in the instrument
panel. It closes a path to ground for the buzzer module
when the park or headlamps are on and the driver's
door jamb switch is closed (door open). The switch opens
the ground path when the park and headlamps are
turned off. The headlamp switch can not be repaired. If
faulty, it must be replaced. Refer to Group 8E - Instru-
ment Panel and Gauges for service procedures.
DRIVER'S SEAT BELT SWITCH
The driver's seat belt switch is integral to the driv-
er's seat belt buckle-half assembly. The switch is nor-
mally closed, providing a ground path to the buzzer
module. When the tip-half of the seat belt is inserted
into the seat belt buckle, the switch opens the buzzer
module ground path. The seat belt switch can not be
repaired. If faulty, the entire driver's seat belt buck-
le-half must be replaced. Refer to Group 23 - Body
Components for service procedures.
JCHIME/BUZZER WARNING SYSTEMS 8U - 1