JEEP LIBERTY 2002 KJ / 1.G Workshop Manual

REMOTE KEYLESS ENTRY
TRANSMITTER
DIAGNOSIS AND TESTING - REMOTE KEYLESS
ENTRY TRANSMITTER
The most reliable, efficient, and accurate means to
diagnose the remote keyless entry transmitter
requires the use of a DRBIIItscan tool and the
proper Diagnostic Procedures manual. The DRBIIIt
scan tool can provide confirmation that the PCI data
bus is functional, and that all of the electronic mod-
ules are sending and receiving the proper messages
on the PCI data bus.
STANDARD PROCEDURE
STANDARD PROCEDURE - RKE TRANSMITTER
BATTERIES
The Remote Keyless Entry (RKE) transmitter case
snaps open and shut for battery access. To replace
the RKE transmitter batteries:(1) Using a thin coin, gently pry at the notch in
the center seam of the RKE transmitter case halves
near the key ring until the two halves unsnap.
(2) Lift the back half of the transmitter case off of
the RKE transmitter.
(3) Remove the two batteries from the RKE trans-
mitter.
(4) Replace the two batteries with new Panasonic
2016, or equivalent. Be certain that the batteries are
installed with their polarity correctly oriented.
(5) Align the two RKE transmitter case halves
with each other, and squeeze them firmly and evenly
together until they snap back into place.
STANDARD PROCEDURE - RKE TRANSMITTER
CUSTOMER PREFERENCES
AUTOMATIC (ROLLING) LOCKS
The rolling locks feature can be toggled ON/OFF
by using the DRB IIItonly.
HORN CHIRP DISABLING / ENABLING
The horn chirp can be toggled using a DRB IIItor
by using the Remote Keyless Entry (RKE) transmit-
ter.
To DISABLE (cancel) the horn chirp feature, press
and hold the transmitter LOCK button for four to ten
seconds. While pressing the LOCK button in, press
the UNLOCK button. Release both buttons.
To ENABLE the horn chirp feature, repeat the
above procedure.
OPTICAL CHIRP (FLASH) DISABLING / ENABLING
The optical chirp can be toggled using a DRB IIIt
or by using the Remote Keyless Entry (RKE) trans-
mitter.
To DISABLE (cancel) the optical chirp feature,
press and hold the transmitter LOCK button for four
to ten seconds. While pressing the LOCK button in,
press the TAILGATE RELEASE button. Release both
buttons.
To ENABLE the optical chirp feature, repeat the
above procedure.
TAIL GATE RELEASE DELAY
Press the UNLOCK button for four to ten seconds.
While pressing the UNLOCK button, press the TAIL
GATE RELEASE button. Release both buttons.
This will toggle between PRESS AND HOLD and
PRESS (no delay).
UNLOCK SEQUENCE
The unlock sequence can be toggled using a DRB
IIItor by using the Remote Keyless Entry (RKE)
transmitter.
Fig. 5 RKE Module Remove/Install
1 - SCREW (4)
2 - RKE MODULE
3 - BODY CONTROL MODULE
4 - JUNCTION BLOCK
8N - 8 POWER LOCKSKJ
REMOTE KEYLESS ENTRY MODULE (Continued)

Press and hold the transmitter UNLOCK button
for four to ten seconds. While pressing the UNLOCK
button in, press the LOCK button. Release both but-
tons.
This will toggle between Driver door first and
Unlock all doors function.
STANDARD PROCEDURE - RKE TRANSMITTER
PROGRAMING
New Remote Keyless Entry (RKE) transmitters can
be programed using the DRBIIItscan tool and the
proper Diagnostic Procedures manual. The DRBIIIt
scan tool can provide confirmation that the PCI data
bus is functional, and that all of the electronic mod-
ules are sending and receiving the proper messages
on the PCI data bus.
The following procedure can be used as long as one
functioning transmitter is available:
(1) Using the original transmitter, press the
UNLOCK button for 4 to 10 seconds.
(2) Without releasing the UNLOCK button, press
the PANIC button (within the 4 to 10 second inter-
val).
(3) Release both buttons.
(4) Press LOCK and UNLOCK simultaneously on
the original transmitter.
(5) Release both buttons.
(6) Press any button on the ORIGINAL transmit-
ter. A chime tone from the instrument cluster will
confirm the programming of the ORIGINAL trans-
mitter.
(7) On NEW transmitter, press LOCK and
UNLOCK simultaneously.
(8) Release both buttons.
(9) Press any button on the NEW transmitter. A
chime tone from the instrument cluster will confirm
the programming of the NEW transmitter.
(10) Up to four transmitters can be programed for
one vehicle.
SPECIFICATIONS - REMOTE KEYLESS ENTRY
TRANSMITTER
RANGE
Normal operation range is up to a distance of 3 to
7 meters (10 to 23 ft.) of the vehicle. Range may be
better or worse depending on the environment
around the vehicle.
TAILGATE CYLINDER LOCK
SWITCH
DESCRIPTION
The tailgate cylinder lock switch is integral to the
key lock cylinder inside the tailgate. The tailgate cyl-
inder lock switch is a normally-open momentary
switch that is hard wired directly to the Body Con-
trol Module (BCM), and closes a path to ground
through an internal resistor when the lock cylinder is
rotated to the unlock or lock position.
The tailgate cylinder lock switch cannot be
adjusted or repaired.
OPERATION
The tailgate cylinder lock switch is actuated when
the key is inserted in the lock cylinder and turned to
the unlock or lock position. The tailgate cylinder lock
switch closes a path to ground through an internal
resistor for the Body Control Module (BCM) when
the tailgate key lock cylinder is in the lock or unlock
position, and opens the ground path when the lock
cylinder is in the neutral position. The BCM reads
the switch status, then sends the proper switch sta-
tus messages to other electronic modules over the
Programmable Communications Interface (PCI) data
bus network. The tailgate cylinder lock switch unlock
status message is used by the BCM as an input for
Vehicle Theft Security System (VTSS) operation and
to tell the BCM to lock or unlock the tailgate. There
is no mechanical linkage between the tailgate key
cylinder and the latches.
DIAGNOSIS AND TESTING - TAILGATE
CYLINDER LOCK SWITCH
(1) Disconnect and isolate the battery negative
cable.
(2) Remove tailgate trim panel (Refer to 23 -
BODY/DECKLID/HATCH/LIFTGATE/TAILGATE/
TRIM PANEL - REMOVAL).
(3) Disconnect tailgate cylinder lock switch har-
ness connector.
(4) Using a ohmmeter, test for resistances as
shown in the Tailgate Cylinder Lock Switch Table.
KJPOWER LOCKS 8N - 9
REMOTE KEYLESS ENTRY TRANSMITTER (Continued)

TAILGATE CYLINDER LOCK SWITCH TABLE
SWITCH POSITION RESISTANCE
NEUTRAL 0 OHMS
LOCK (CLOCKWISE) 2 K OHMS   10 %
UNLOCK (COUNTER-
CLOCKWISE)470 OHMS   10 %
(5) If switch resistance is not correct, replace
switch.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the tailgate trim panel.(Refer to 23 -
BODY/DECKLID/HATCH/LIFTGATE/TAILGATE/
TRIM PANEL - REMOVAL).
(3) Remove the retainer clip from the pin on the
back of the door lock cylinder (Fig. 6).
(4) Remove the washer from the pin on the back of
the door lock cylinder.
(5) Remove the door cylinder lock switch from the
back of the lock cylinder.
INSTALLATION
(1) Position the tailgate cylinder lock switch onto
the back of the lock cylinder with the wire harness
oriented toward the bottom.
(2) Position the washer over the switch.
(3) Install the retainer clip onto the pin on the
back of the tailgate lock cylinder. Be certain that thecenter tab of the retainer is engaged in the retention
hole on the lock lever.
(4) Install the trim panel (Refer to 23 - BODY/
DECKLID/HATCH/LIFTGATE/TAILGATE/TRIM
PANEL - INSTALLATION).
(5) Connect the battery negative cable.
Fig. 6 Lock Cylinder Switch Remove/Install -Typical
1 - LEVER
2 - RETAINER
3 - LOCK CYLINDER
4 - SWITCH
5 - PLIERS
6 - OUTSIDE DOOR HANDLE
8N - 10 POWER LOCKSKJ
TAILGATE CYLINDER LOCK SWITCH (Continued)

POWER MIRRORS
TABLE OF CONTENTS
page page
POWER MIRRORS
DESCRIPTION.........................11
OPERATION...........................11
DIAGNOSIS AND TESTING - POWER
MIRRORS...........................11
POWER MIRROR SWITCH
DIAGNOSIS AND TESTING - POWER MIRROR
SWITCH............................12REMOVAL.............................13
INSTALLATION.........................13
SIDEVIEW MIRROR
REMOVAL.............................13
POWER MIRRORS
DESCRIPTION
The available power operated sideview mirrors
allow the driver to adjust both outside mirrors elec-
trically from the drivers seat by operating a switch
on the driver side front door trim panel (Fig. 1).
OPERATION
The power mirrors receive ignition current through
a fuse in the junction block, and will only operate
when the ignition switch is in the Run position.
DIAGNOSIS AND TESTING - POWER MIRRORS
WIRING VOLTAGE TEST
The following wiring test determines whether or
not voltage is continuous through the body harness
to switch.
(1) Remove the power mirror switch (Refer to 8 -
ELECTRICAL/POWER MIRRORS/POWER MIRROR
SWITCH - REMOVAL).
(2) Disconnect wire connector from back of power
mirror switch.
(3) Switch ignition to the RUN position.
(4) Connect the clip end of a 12 volt test light to
Pin 5 in the harness connector at the mirror switch.
Touch the test light probe to Pin 3.
If the test light illuminates, the wiring circuit
between the battery and switch is OK.
If the lamp does not illuminate, first check fuse 25
in the Junction Block (JB). If fuse 25 is OK, then
check for a broken wire.
Refer to the appropriate wiring information. The
wiring information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.
POWER MIRROR MOTOR TEST
If the power mirror switch is receiving proper cur-
rent and ground and mirrors do not operate, proceed
with power mirror motor test. Refer to the appropri-
ate wiring information. The wiring information
includes wiring diagrams, proper wire and connector
repair procedures, details of wire harness routing
and retention, connector pin-out information and
location views for the various wire harness connec-
tors, splices and grounds.
Fig. 1 POWER MIRROR SWITCH
1 - DOOR TRIM PANEL
2 - DOOR LOCK SWITCH
3 - POWER MIRROR SWITCH
KJPOWER MIRRORS 8N - 11

(1) Remove front door trim panel to gain access to
power mirror wire connector (Refer to 23 - BODY/
DOOR - FRONT/TRIM PANEL - REMOVAL).
(2) Disconnect wire harness connector to power
mirror switch (Fig. 2).
(3) Using two jumper wires:
²Connect one to a 12 volt source
²Connect the other to a good body ground
²Refer to the Mirror Motor Test Chart for proper
wire connections at the switch connector
MIRROR MOTOR TEST CHART
12 VOLTS GROUND MIRROR REACTION
SWITCH CONNECTOR RIGHT LEFT
PIN 2 PIN 6 - UP
PIN 6 PIN 1 - LEFT
PIN 6 PIN 2 - DOWN
PIN 1 PIN 6 - RIGHT
PIN 9 PIN 6 UP -
PIN 6 PIN 10 LEFT -
PIN 6 PIN 9 DOWN -
PIN 10 PIN 6 RIGHT -
(4) If results shown in table are not obtained,
check for open or shorted circuit. Replace mirror
assembly as necessary.
POWER MIRROR SWITCH
DIAGNOSIS AND TESTING - POWER MIRROR
SWITCH
(1) Remove power mirror switch (Refer to 8 -
ELECTRICAL/POWER MIRRORS/POWER MIRROR
SWITCH - REMOVAL).(2) Disconnect wiring harness connector from
switch.
(3) Using a ohmmeter, test for continuity between
the terminals of the switch (Fig. 3).
(4) If results shown in the table are not obtained,
replace the switch.
POWER MIRROR SWITCH TEST
SWITCH POSITION CONTINUITY BETWEEN
MIRROR SELECT SWITCH IN9LEFT9POSITION
UP 5 AND 2
3 AND 6
DOWN 5 AND 6
3 AND 2
LEFT 5 AND 6
3 AND 1
RIGHT 5 AND 1
3 AND 6
MIRROR SELECT SWITCH IN9RIGHT9POSITION
UP 5 AND 9
3 AND 6
DOWN 5 AND 6
3 AND 9
LEFT 5 AND 6
3 AND 10
RIGHT 5 AND 10
3 AND 6Fig. 2 POWER MIRROR SWITCH CONNECTOR
Fig. 3 POWER MIRROR SWITCH
8N - 12 POWER MIRRORSKJ
POWER MIRRORS (Continued)

REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove door trim panel (Refer to 23 - BODY/
DOOR - FRONT/TRIM PANEL - REMOVAL).
(3) Disconnect wire harness connector from switch
(Fig. 4).(4) Remove switch from door trim panel.INSTALLATION
(1) Install switch to door trim panel.
(2) Connect wire harness connector to switch.
(3) Install door trim panel (Refer to 23 - BODY/
DOOR - FRONT/TRIM PANEL - INSTALLATION).
(4) Connect battery negative cable.
SIDEVIEW MIRROR
REMOVAL
(1) For removal procedures, (Refer to 23 - BODY/
EXTERIOR/SIDE VIEW MIRROR - REMOVAL).
Fig. 4 DOOR LOCK/MIRROR SWITCH
1 - DOOR TRIM PANEL
2 - DOOR LOCK SWITCH
3 - POWER MIRROR SWITCH
KJPOWER MIRRORS 8N - 13
POWER MIRROR SWITCH (Continued)

POWER SEATS
TABLE OF CONTENTS
page page
POWER SEATS
DESCRIPTION.........................14
OPERATION...........................15
DIAGNOSIS AND TESTING - POWER SEATS . . 15
SEAT TRACK
DESCRIPTION.........................15
OPERATION...........................15
DIAGNOSIS AND TESTING - SEAT TRACK....16
REMOVAL.............................16
INSTALLATION.........................16
LEFT POWER SEAT SWITCH
DESCRIPTION.........................16OPERATION...........................17
DIAGNOSIS AND TESTING - LEFT POWER
SEAT SWITCH........................17
REMOVAL.............................18
INSTALLATION.........................18
RIGHT POWER SEAT SWITCH
DESCRIPTION.........................19
OPERATION...........................19
DIAGNOSIS AND TESTING - RIGHT POWER
SEAT SWITCH........................19
REMOVAL.............................20
INSTALLATION.........................20
POWER SEATS
DESCRIPTION
Individually controlled, electrically powered front
seats are available as factory-installed equipment on
this model. Vehicles with this option can be visually
identified by the two separate power seat switches,
mounted on each of the front seat cushion side
shields (Fig. 1). The power seat system option allows
the front seating positions to be electrically adjustedfor optimum vehicle control and comfort. The power
seat cushion can be adjusted forward, rearward, front
up, front down, rear up, or rear down. The power
seat system for this vehicle includes the following
major components, which are described in further
detail later in this section:
²Power Seat Switches- Two power seat
switches are used per vehicle, one for the driver and
one for the front seat passenger. Refer to the left and
right power seat switch information later in this sec-
tion.
²Power Seat Tracks- Two power seat tracks
are used per vehicle, one for the driver and one for
the front seat passenger seats. Refer to the power
seat track information later in this section.
²Circuit Breaker- An automatic resetting cir-
cuit breaker (# 1) is located in the Junction Block
and is used to protect the power seat system from
current overload.
Hard wired circuitry connects the power seat sys-
tem components to each other through the electrical
system of the vehicle. These hard wired circuits are
integral to several wire harnesses, which are routed
throughout the vehicle and retained by many differ-
ent methods. These circuits may be connected to each
other, to the vehicle electrical system and to the
power seat system components through the use of a
combination of soldered splices, splice block connec-
tors and many different types of wire harness termi-
nal connectors and insulators. Refer to theWiring
section of this manual for more information. The wir-
ing information includes wiring diagrams, proper
wire and connector repair procedures, further details
on wire harness routing and retention, as well as
pin-out and location views for the various wire har-
ness connectors, splices and grounds.
Fig. 1 KJ Heated/Power Seat
8N - 14 POWER SEATSKJ

OPERATION
The power seat system receives battery current
through a fuse in the Power Distribution Center
(PDC) and a circuit breaker in the Junction Block,
regardless of the ignition switch position.
When a power seat switch control knob or knobs
are actuated, a battery feed and a ground path are
applied through the switch contacts to the appropri-
ate power seat track adjuster motor. The selected
adjuster motor operates to move the seat track
through its drive unit in the selected direction until
the switch is released, or until the travel limit of the
seat track is reached. When the switch is moved in
the opposite direction, the battery feed and ground
path to the motor are reversed through the switch
contacts. This causes the adjuster motor to run in the
opposite direction.
Refer to the owner's manual in the vehicle glove
box for more information on the features, use and
operation of the power seat system.
DIAGNOSIS AND TESTING - POWER SEATS
Before any testing of the power seat system is
attempted, the battery should be fully-charged and
all wire harness connections and pins cleaned and
tightened to ensure proper continuity and grounds.
Refer to the appropriate wiring information. The wir-
ing information includes wiring diagrams, proper
wire and connector repair procedures, further details
on wire harness routing and retention, as well as
pin-out and joint connector location views for the var-
ious wire harness connectors, splices and grounds.
(1) If all power seats are inoperative, check the
automatic resetting circuit breaker in the Junction
Block. (Refer to 8 - ELECTRICAL/POWER DISTRI-
BUTION/CIRCUIT BREAKER - DIAGNOSIS AND
TESTING).
(2) With the dome lamp on, apply the power seat
switch in the direction of the failure.
(3) If the dome lamp dims, the seat or the power
seat track may be jammed. Check under and behind
the seat for binding or obstructions.
(4) If the dome lamp does not dim, proceed with
testing of the individual power seat system compo-
nents and circuits.
SEAT TRACK
DESCRIPTION
The six-way power seat option includes a power
seat track assembly located under each front seat
(Fig. 2). The power seat track assembly replaces the
standard manually operated seat tracks. The lower
half of the power seat track is secured at the frontwith two bolts to the floor panel seat cross member,
and at the rear with one bolt and one nut to the floor
panel. Four bolts secure the bottom of the seat cush-
ion frame to the upper half of the power seat track
unit.
The power seat track assembly cannot be repaired,
and is serviced only as a complete assembly. If any
component in this assembly is faulty or damaged, the
entire power seat track must be replaced.
OPERATION
The power seat track unit includes three reversible
electric motors that are secured to the upper half of
the track unit. Each motor moves the seat adjuster
through a combination of worm-drive gearboxes and
screw-type drive units. Each of the three driver side
power seat track motors also has a position potenti-
ometer integral to the motor assembly, which elec-
tronically monitors the motor position.
The front and rear of the seat are operated by two
separate vertical adjustment motors. These motors
can be operated independently of each other, tilting
the entire seat assembly forward or rearward; or,
they can be operated in unison by selecting the
proper power seat switch functions, which will raise
or lower the entire seat assembly. The third motor is
the horizontal adjustment motor, which moves the
seat track in the forward and rearward directions.
Fig. 2 Power Seat Track - Typical
1 - POWER SEAT ADJUSTER AND MOTORS
2 - SEAT CUSHION FRAME
3 - POWER SEAT TRACK ASSEMBLY
KJPOWER SEATS 8N - 15
POWER SEATS (Continued)

DIAGNOSIS AND TESTING - SEAT TRACK
(1) Remove the power seat switch from the seat
(Refer to 8 - ELECTRICAL/POWER SEATS/DRIVER
SEAT SWITCH - REMOVAL).
(2) Checking the body harness side of the power
seat switch electrical connector (Fig. 3), check Pin 1
for ground and Pin 5 for battery voltage. If either of
these two are not present repair the body harness as
required.
(3) To test the seat motors and verify proper seat
responses, refer to the Seat Motor Test table below.
Using two jumper wires, connect one to a battery
supply and the second to a ground. Connect the other
ends to the seat wire harness connector as described
in the Seat Motor Test table.
SEAT MOTOR TEST
SEAT SWITCH CONNECTOR
CONNECT JUMPER SEAT ACTION
B(+) B(±) LEFT SIDE RIGHT SIDE
PIN 9 PIN 8 FRONT
RISER UPFRONT
RISER
DOWN
PIN 8 PIN 9 FRONT
RISER
DOWNFRONT
RISER UP
PIN 3 PIN 6 FORWARD FORWARD
PIN 6 PIN 3 REARWARD REARWARD
PIN 10 PIN 7 REAR
RISER UPREAR RISER
DOWN
PIN 7 PIN 10 REAR
RISER
DOWNREAR RISER
UP
REMOVAL
(1) Remove the appropriate seat from the vehicle.
(Refer to 23 - BODY/SEATS/SEAT - REMOVAL).(2) Remove the seat cushion side shield from the
seat (Refer to 23 - BODY/SEATS/SEAT CUSHION
SIDE COVERS - REMOVAL).
(3) Remove four seat track mounting bolts from
cushion pan.
(4) Disconnect the power seat electrical and
remove the seat track from the seat cushion.
INSTALLATION
(1) Position the seat track and install the retaining
bolts in the seat cushion pan. Torque the bolts to
45-60 N´m.
(2) Route and connect the power seat electrical on
the seat track and cushion pan.
(3) Install the seat cushion side shield on the seat.
Refer to the Body section for the procedure.
(4) Install the seat in the vehicle (Refer to 23 -
BODY/SEATS/SEAT - INSTALLATION).
(5) Connect the negative battery cable.
LEFT POWER SEAT SWITCH
DESCRIPTION
Vehicles equipped with the power seat option uti-
lize a six-way power seat switch. This six-way power
seat switch features one seat cushion shaped knob,
visible on the outboard seat cushion side shield (Fig.
4).
The switch is secured to the back of the seat cush-
ion side shield with two screws. However, the control
knob must be removed before the seat switch can be
removed from the side shield.
Fig. 3 POWER SEAT SWITCH HARNESS PIN
IDENTIFICATION
1 - CONNECTOR RETAINING TAB
2 - VIEWED FROM BODY HARNESS END
Fig. 4 KJ Heated/Power Seat
8N - 16 POWER SEATSKJ
SEAT TRACK (Continued)

The individual switches internal to the power seat
switch cannot be repaired. If one switch is damaged
or faulty, the entire power seat switch unit must be
replaced.
OPERATION
The power seat tracks can be adjusted in six differ-
ent ways using the power seat switches. See the own-
er's manual in the vehicle glove box for more
information on the power seat switch functions and
the seat adjusting procedures.
When a power seat switch control knob or knobs
are actuated, a battery feed and a ground path are
applied through the switch contacts to the power seat
track adjuster motor. The selected adjuster motor
operates to move the seat track through its drive
unit in the selected direction until the switch is
released, or until the travel limit of the seat track is
reached. When the switch is moved in the opposite
direction, the battery feed and ground path to the
motor are reversed through the switch contacts. This
causes the adjuster motor to run in the opposite
direction.
No power seat switch should be held applied in any
direction after the seat track has reached its travel
limit. The power seat adjuster motors each contain a
self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
DIAGNOSIS AND TESTING - LEFT POWER
SEAT SWITCH
For complete circuit diagrams, refer toPower
Seatin Wiring Diagrams.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the power seat switch from the out-
board seat cushion side shield.
(3) Use an ohmmeter to test the continuity of the
power seat switch in each switch position. See the
Power Seat Switch Continuity chart (Fig. 5) and
switch (Fig. 6) below. If OK, refer toDiagnosis and
Testing the Power Seat Trackin this section. If
not OK, replace the faulty power seat switch unit.
Fig. 5 SIX-WAY POWER SEAT SWITCH CONTINUITY
Fig. 6 DIAGNOSING POWER SEAT SWITCH
1-UP
2 - REARWARD
3 - DOWN
4 - FORWARD
5 - FRONT RISER SWITCH
6 - CENTER SEAT SWITCH
7 - REAR RISER SWITCH
KJPOWER SEATS 8N - 17
LEFT POWER SEAT SWITCH (Continued)