1994 JEEP CHEROKEE key

(25) Push turn/hazard connector up and out of
steering column connector (Fig. 8).
(26) Pry up locking tabs of steering column connec-
tor and remove connector from column bracket.
(27) Remove plastic harness cover by pulling it up
and over weld nuts then open and slide the cover off
harness (Fig. 9).
(28) Pull turn/hazard switch out of column far
enough to allow access to remaining screws.(29) Insert ignition key in lock cylinder and turn
ignition switch to ON position.
(30) Remove key warning buzzer switch and re-
taining clip with a paper clip inserted below retainer
so that retainer is flattened (Fig. 10).
Do not attempt to remove buzzer switch and
clip separately. The clip could fall into the col-
umn jacket.
(31) Remove ignition lock cylinder retaining screw
and pull lock cylinder out of column housing (Fig. 11).
Fig. 8 Turn/Hazard Switch And Steering Column
Connectors
Fig. 9 Remove Plastic Harness Cover
Fig. 10 Buzzer Switch Removal
Fig. 11 Lock Cylinder Removal/Installation
JWINDSHIELD WIPERS 8K - 17

(32) Remove screws that attach housing and
shroud assembly to column jacket and carefully re-
move housing and shroud assembly (Fig. 12).
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. 13). If equipped with
column shift, remove screw holding the cover on.
(35) Remove pivot screw from housing and remove
wiper switch.
(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. 14).
Make sure nylon spring retainer on lock pin is
positioned forward of the retaining slot of lock
rack (Fig. 14).
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) To install remaining parts, reverse removal
procedures.CAUTION: When installing a wiper switch, make
sure wires are laying flat on bottom inside of col-
umn.
On vehicles equipped with column shift, install
PRNDL cable clip with shift indicator on N (neu-
tral). 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.
Fig. 12 Steering Column Housing
Removal/Installation
Fig. 13 Remove Pivot Screw
Fig. 14 Check Dimmer Switch Rod and Lock Pin
8K - 18 WINDSHIELD WIPERSJ

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

POWER DOOR LOCKS
CONTENTS
page page
KEYLESS ENTRY........................ 8POWER LOCKS......................... 1
POWER LOCKS
INDEX
page page
Actuator Motor Stall Test.................... 6
Description.............................. 1
Diagnosing Power Door Locks............... 1
General................................. 1Liftgate Lock Cylinder Replacement............ 7
Solenoid and Latch Assembly Replacement..... 6
Switch Replacement....................... 6
GENERAL
The door lock actuators, including liftgate, are con-
trolled by two-way switches. To lock the doors, push
down on either switch. To unlock doors from inside
the vehicle push upward on either switch.
The power door locks do not lock or unlock the
doors from outside the vehicle. Insert the key into
the lock cylinder to lock or unlock each individual
door.
DESCRIPTION
The door locks are operated by reversible motors
that receive voltage from fuse #13 in the fuse panel.
Voltage is applied to the driver's side door lock
switch and the passenger's side door lock switch
through the #9 fuse. With the driver's side door lock
switch in LOCK, voltage is applied through the
switch to the door lock relay coil. The relay coil is
energized which closes the circuit from the circuit
breaker to the lock motor. The motor is grounded by
the unlock relay.
The passenger's side door lock window switch oper-
ates the same as the driver's door switch. The volt-
age and ground paths are reversed to unlock the
doors.
The power door lock operates with battery power
and, therefore, is independent of the ignition switch.
DIAGNOSING POWER DOOR LOCKS
If vehicle has Keyless Entry and the door locks op-
erate properly using door switches but do not work
with transmitter, refer to Keyless Entry in this
group.
NO DOOR LOCKS OPERATE USING DOOR
LOCK SWITCHES
(1) Inspect fuse #13. Replace if necessary. If OK,
measure voltage at battery side of fuse. There should
be 12 volts. If not, repair open from Power Distribu-
tion Center.
(2) Remove door switch and measure voltage at
terminal 1. Meter should read battery voltage. If not,
repair open to #9 fuse.
(3) The power window relays are in the relay cen-
ter. The relay center is located on the lower instru-
ment panel trim cover just right of the steering
column (Fig. 1). Remove both relays.
(4) Measure resistance between lock and unlock re-
lay terminal 4 (87A) and ground. Meter should read
zero ohms. If not, repair open to ground.
(5) Measure voltage at terminal 5 (87) of both the
lock and unlock relays. Meter should read battery
voltage. If OK, next step. If not, repair open to cir-
cuit breaker.
(6) Measure resistance at terminal 2 (85) of both
the lock and unlock relays. Meter should read zero
ohms. If not, repair open to ground.
(7) Hold driver's side switch in LOCK position.
Measure voltage at lock relay terminal 1 (86). Meter
should read battery voltage. If OK, next step. If not,
repair open to driver's side switch.
(8) Hold driver's side switch in UNLOCK position.
Measure voltage at unlock relay terminal 1 (86).
Meter should read battery voltage. If OK, next step.
If not, repair open to driver's side switch.
JPOWER DOOR LOCKS 8P - 1

(5) Remove latch.
(6) Drill out 2 rivets and remove solenoid.
(7) To install solenoid, reverse the removal proce-
dures.
(8) Tighten latch screws to 9 Nzm (7 ft. lbs.) torque.
KEYLESS ENTRY
INDEX
page page
Diagnosing Power Door Locks............... 9
Door Lock/Unlock Relay Replacement......... 12
Receiver................................ 8
Receiver Service......................... 11
System Description........................ 8System Operation......................... 9
Transmitter.............................. 8
Transmitter Programming................... 9
Transmitter Service........................ 9
SYSTEM DESCRIPTION
The keyless entry system consists of a portable re-
mote control transmitter and a receiver mounted in
the overhead console or between the sun visors. Sys-
tem operation is based on a coded infrared signal
from the transmitter to the receiver. The transmitter
is programmed into the receiver providing the correct
programming sequence is met.
When the keyless entry system is activated, the cor-
responding relay operates to supply voltage to the mo-
tors. The use of either relay determines the polarity of
the voltage that is supplied to the door lock motors.
When the keyless entry system is used, the trans-
mitter sends a signal to the keyless entry module. If
the doors are unlocked, the module activates a tran-
sistor switch to apply voltage to the lock relay coil.
The coil is energized to close the normally open con-
tacts of the lock relay. Battery voltage from the relay
is applied to the door lock motors to lock the doors.
Current flows in the same path to ground as it does
when the master door lock switch is used.When the doors are locked, the keyless entry mod-
ule applies voltage to the unlock relay coil and a
similar action takes places to unlock the doors.
TRANSMITTER
The pocket size, solid state transmitter operates on
(2) 3-volt lithium (CR1616) batteries (Fig. 1). The
transmitter is activated by pressing either the LOCK
or UNLOCK button. This closes the internal contacts
that complete the battery circuit.
The battery voltage activates the transmitter diode
which in turn generates a coded infrared signal. The
signal is transmitted as pulses of infrared light.
If the red LED on the side of the transmitter does
not light when the transmitter is activated, the bat-
teries are low.
RECEIVER
The receiver is in circuit with the electric door lock
system. The coded infrared signal is picked up by the
receiver diode and is shaped, amplified and decoded by
an integrated circuit within the receiver. If the signal
Fig. 10 Latch Assembly Removal/Installation
8P - 8 POWER DOOR LOCKSJ

code received matches the code in the receiver memory
circuit, the receiver triggers the door lock/unlock relays.
The relays complete the circuit to the electric door lock
solenoid to either lock or unlock the doors.
SYSTEM OPERATION
To activate the system, aim the transmitter diode
toward the receiver and press the transmitter signal
button to lock or unlock the doors as desired.
Effective transmitter range is 4.75 meters (15 ft.)
with the transmitter positioned no more than 45 de-
grees from the receiver centerline.
For complete circuit diagrams refer to Group
8W - Wiring Diagrams.
TRANSMITTER PROGRAMMING
Up to 4 Transmitter Identification Codes (TIC's) can
be programed into the receiver at any given time.
(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 re-
ceiver dome and press the LOCK button for at least
5 seconds. Once the receiver accepts the program-
ming code, the driver's door will unlock.
(5) Once the first transmitter has been pro-
grammed, additional transmitters (up to 4) may be
programmed into the receiver. Within 20 seconds of
the previous transmitter programming, move the me-
chanical door lock lever to the LOCK position. Aimanother 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 re-
ceiver, 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.
DIAGNOSING POWER DOOR LOCKS
NO DOOR LOCKS OPERATE, USING
TRANSMITTER
(1) Measure resistance at keyless entry module
terminal 10. Meter should read zero ohms. If not, re-
pair open to ground.
(2) Measure voltage at keyless entry module termi-
nal 1. Meter should read battery voltage.Battery
voltage must be at least 9 volts for this system to
operate.If not, repair open to #9 fuse.
(3) Jumper test leads keyless entry module termi-
nal 1 to terminal 3. Doors should lock. If OK, replace
module. If not, repair open from terminal 3 to lock
relay terminal 1.
(4) Jumper test leads keyless entry module termi-
nal 1 to terminal 4. Door should unlock. If OK, re-
place module. If not, repair open from terminal 4 to
unlock relay terminal 1.
TRANSMITTER SERVICE
If the receiver malfunctions, only the receiver will
have to be replaced. The new receiver will have to be
reprogrammed. If a transmitter is lost, replace the
transmitter and reprogram the receiver.
Batteries may not be supplied with some re-
placement transmitters. Be sure to check a re-
placement transmitter before attempting to
activate the system.
TRANSMITTER BATTERY REPLACEMENT
(1) Separate transmitter at middle seam (Fig. 2).
Fig. 2 Separate Transmitter Halves
Fig. 1 Keyless Entry Transmitter
JPOWER DOOR LOCKS 8P - 9

(2) Remove and discard old batteries (Figs. 3, 4).
(3) Install the new CR 1616 batteries. Be sure the
batteries are installed according to polarity as shown
on the transmitter battery receptacles.
(4) Assemble the transmitter and verify the correct
battery installation. The voltage indicator light will
glow when the batteries are properly installed.
RECEIVER SERVICE
WITH OVERHEAD CONSOLE
(1) Remove screw forward of compass unit (Fig. 5).
(2) Flex housing outward while pressing upward to
disengage housing from the rear bracket (arrow 1)
(Fig. 5).
(3) Slide console rearward until the console de-
taches from the front mounting bracket (arrow 2)
(Fig. 5).
(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. 6).(5) Disconnect wire harnesses from keyless entry
and compass (Figs. 7 and 8).
(6) Pinch forward area of receiver cover and re-
lease clips. Slide cover out from under rib (Fig. 9).
Fig. 3 Battery Removal
Fig. 4 Battery Installation
Fig. 5 Remove/Install Overhead Console
Fig. 6 Remove/Install Overhead Console
Fig. 7 Disconnect Wire Harnesses
JPOWER DOOR LOCKS 8P - 11

(7) Remove screw and printed circuit board.
(8) To install the overhead console, reverse the re-
moval procedures. Be sure to flex housing outward
near the keyless entry receiver until the console
snaps onto the rear mounting bracket.
WITHOUT OVERHEAD CONSOLE
(1) Remove 2 screws attaching receiver housing to
headlining (Fig. 10).
(2) Pull housing toward rear of vehicle to disen-
gage clip.
(3) Disconnect receiver harness connector.
(4) Remove circuit board from housing.
(5) Reverse the removal procedures to install the
receiver.
DOOR LOCK/UNLOCK RELAY REPLACEMENT
The power door lock/unlock relays are in the relay
center. The relay center is located on the lower in-
strument panel trim cover just right of the steering
column (Fig. 11). Remove both relays.
(1) Remove the appropriate relay from the relay
center.
(2) To install the new relay(s) reverse the removal
procedure.
Fig. 8 Keyless Entry Harness Connector
Fig. 9 Keyless Entry Receiver Cover Removal/
Installation
Fig. 10 Remove/Install Keyless Entry Housing
Fig. 11 Door Lock/Unlock Relays
8P - 12 POWER DOOR LOCKSJ