2002 JEEP LIBERTY door panel removal

(4) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If OK, reinstall the relay and use a DRBIIIt
scan tool to perform further testing. Refer to the
appropriate diagnostic information.
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the steering column opening cover
from the instrument panel. (Refer to 23 - BODY/IN-
STRUMENT PANEL/STEERING COLUMN OPEN-
ING COVER - REMOVAL).
(3) Remove the rear fog lamp relay by grasping it
firmly and pulling it straight out from the receptacle
in the Junction Block (JB) (Fig. 58).
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.(1) Position the rear fog lamp relay to the proper
receptacle in the Junction Block (JB) (Fig. 58).
(2) Align the rear fog lamp relay terminals with
the terminal cavities in the JB receptacle.
(3) Push firmly and evenly on the top of the rear
fog lamp relay until the terminals are fully seated in
the terminal cavities in the JB receptacle.
(4) Reinstall the steering column opening cover
onto the instrument panel. (Refer to 23 - BODY/IN-
STRUMENT PANEL/STEERING COLUMN OPEN-
ING COVER - INSTALLATION).
(5) Reconnect the battery negative cable.
Fig. 58 Junction Block - Inboard Side (LHD Shown -
Rotate 180É for RHD)
1 - PASSENGER DOOR UNLOCK RELAY
2 - JB C3 CONNECTOR RECEPTACLE
3 - LOW BEAM RELAY
4 - CIRCUIT BREAKER #1
5 - CIRCUIT BREAKER #2
6 - CIRCUIT BREAKER #3
7 - DOOR LOCK RELAY
8 - DEFOGGER RELAY
9-SPARE
10 - FRONT FOG LAMP RELAY
11 - HORN RELAY
12 - SPARE
13 - SPARE
14 - REAR FOG LAMP RELAY
15 - PARK LAMP RELAY
16 - DRIVER DOOR UNLOCK RELAY
17 - JB C1 CONNECTOR RECEPTACLE
18 - JB C2 CONNECTOR RECEPTACLE
8Ls - 58 LAMPSKJ
REAR FOG LAMP RELAY (Continued)

POWER SYSTEMS
TABLE OF CONTENTS
page page
POWER LOCKS............................ 1
POWER MIRRORS........................ 11POWER SEATS........................... 14
POWER WINDOWS........................ 21
POWER LOCKS
TABLE OF CONTENTS
page page
POWER LOCKS
DESCRIPTION..........................1
OPERATION............................3
DIAGNOSIS AND TESTING - POWER LOCKS . . 3
DOOR LOCK / UNLOCK SWITCH
DIAGNOSIS AND TESTING - DOOR LOCK/
UNLOCK SWITCH......................4
REMOVAL.............................4
INSTALLATION..........................5
DOOR LOCK MOTOR
DESCRIPTION..........................5
OPERATION............................5
DIAGNOSIS AND TESTING - DOOR LOCK
MOTOR ..............................5
FLIP-UP GLASS RELEASE SWITCH
DIAGNOSIS AND TESTING - FLIP-UP GLASS
RELEASE SWITCH.....................5
DOOR LOCK RELAY
DESCRIPTION..........................6
OPERATION............................6
DIAGNOSIS AND TESTING - DOOR LOCK
RELAY...............................6
REMOVAL.............................6
INSTALLATION..........................7
REMOTE KEYLESS ENTRY MODULE
DESCRIPTION..........................7OPERATION............................7
DIAGNOSIS AND TESTING - REMOTE
KEYLESS ENTRY MODULE...............7
REMOVAL.............................7
INSTALLATION..........................7
REMOTE KEYLESS ENTRY TRANSMITTER
DIAGNOSIS AND TESTING - REMOTE
KEYLESS ENTRY TRANSMITTER..........8
STANDARD PROCEDURE
STANDARD PROCEDURE - RKE
TRANSMITTER BATTERIES..............8
STANDARD PROCEDURE - RKE
TRANSMITTER CUSTOMER
PREFERENCES.......................8
STANDARD PROCEDURE - RKE
TRANSMITTER PROGRAMING............9
SPECIFICATIONS - REMOTE KEYLESS
ENTRY TRANSMITTER..................9
TAILGATE CYLINDER LOCK SWITCH
DESCRIPTION..........................9
OPERATION............................9
DIAGNOSIS AND TESTING - TAILGATE
CYLINDER LOCK SWITCH...............9
REMOVAL.............................10
INSTALLATION.........................10
POWER LOCKS
DESCRIPTION
POWER LOCKS
A power operated door and tailgate lock system is
available factory-installed equipment on this model.
The power lock system allows all of the doors and thetailgate to be locked or unlocked electrically by oper-
ating a switch on either front door trim panel. The
power lock system receives non-switched battery cur-
rent through a fuse in the Junction Block (JB), so
that the power locks remain operational, regardless
of the ignition switch position.
The Body Control Module (BCM) locks the doors
and tailgate automatically when the vehicle is driven
beyond the speed of 25.7 Km/h (15 mph), all doors
KJPOWER SYSTEMS 8N - 1

(2) Remove the door trim panel (Fig. 2) (Refer to
23 - BODY/DOOR - FRONT/TRIM PANEL - REMOV-
AL).
(3) Disconnect electrical harness connector from
switch.
(4) From behind the door trim panel, gently pry
the switch from the door trim panel (Fig. 3).
INSTALLATION
(1) Press the switch into place.
(2) Connect the electrical harness connector to the
switch.(3) Install the door trim panel (Refer to 23 -
BODY/DOOR - FRONT/TRIM PANEL - INSTALLA-
TION).
(4) Connect the battery negative cable.
DOOR LOCK MOTOR
DESCRIPTION
The lock mechanisms are actuated by a reversible
electric motor mounted within each door and tailgate.
The power lock motors are integral to the door latch
units.
The power lock motors cannot be adjusted or
repaired and, if faulty or damaged, the door latch
unit must be replaced.
OPERATION
The door lock motors are controlled by relays. A
positive and negative battery connection to the two
motor terminals will cause the motor to move in one
direction. Reversing the current will cause the motor
to move in the opposite direction.
DIAGNOSIS AND TESTING - DOOR LOCK
MOTOR
The most reliable, efficient, and accurate means to
diagnose the power lock system requires the use of a
DRBIIItscan tool and the proper Diagnostic Proce-
dures manual. The DRBIIItscan tool can provide
confirmation that the PCI data bus is functional, that
all of the electronic modules are sending and receiv-
ing the proper messages on the PCI data bus, and
that the power lock motors are being sent the proper
hard wired outputs by the door modules for them to
perform their power lock system functions.
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.
FLIP-UP GLASS RELEASE
SWITCH
DIAGNOSIS AND TESTING - FLIP-UP GLASS
RELEASE SWITCH
(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) Disconnect the wire harness connector.
Fig. 2 DOOR LOCK SWITCH
1 - DOOR TRIM PANEL
2 - DOOR LOCK SWITCH
3 - POWER MIRROR SWITCH
Fig. 3 DOOR LOCK/MIRROR SWITCH
1 - DOOR TRIM PANEL
2 - DOOR LOCK SWITCH
3 - POWER MIRROR SWITCH
KJPOWER LOCKS 8N - 5
DOOR LOCK / UNLOCK SWITCH (Continued)

(4) Using an ohmmeter, check for continuity
between the pins of the wire harness connector while
pulling on the tailgate handle.
(5) If no continuity is found, replace the tailgate
handle assembly (Refer to 23 - BODY/DECKLID/
HATCH/LIFTGATE/TAILGATE/EXTERIOR HAN-
DLE - REMOVAL).
DOOR LOCK RELAY
DESCRIPTION
The power door lock system uses the following
relays for the front and rear passenger doors only:
²Driver door unlock relay
²Door lock relay
²Passenger Doors unlock relay
The tailgate uses outputs from the Body Control
Module (BCM).
The relays are electromechanical devices that
switch battery current to the door lock circuit when
the Body Control Module (BCM) grounds the relay
coil. These relays are located in the Junction Block
(JB). For complete circuit diagrams, refer to the
appropriate wiring information. The wiring informa-
tion includes wiring diagrams, proper wire and con-
nector repair procedures, details of wire harness
routing and retention, connector pin-out information
and location views for the various wire harness con-
nectors, splices and grounds.
The relays are a International Standards Organi-
zation (ISO) micro-relay. Relays conforming to the
ISO specifications have common physical dimensions,
current capacities, terminal patterns, and terminal
functions. The ISO micro-relay terminal functions
are the same as a conventional ISO relay. However,
the ISO micro-relay terminal pattern (or footprint) is
different, the current capacity is lower, and the phys-
ical dimensions are smaller than those of the conven-
tional ISO relay.
The relay cannot be repaired or adjusted and, if
faulty or damaged, it must be replaced.
OPERATION
The ISO relay consists of an electromagnetic coil, a
resistor and three (two fixed and one movable) elec-
trical contacts. The movable (common feed) relay con-
tact is held against one of the fixed contacts
(normally closed) by spring pressure. When the elec-
tromagnetic coil is energized, it draws the movable
contact away from the normally closed fixed contact,
and holds it against the other (normally open) fixed
contact.When the electromagnetic coil is de-energized,
spring pressure returns the movable contact to the
normally closed position. The resistor is connected in
parallel with the electromagnetic coil in the relay,
and helps to dissipate voltage spikes that are pro-
duced when the coil is de-energized.
DIAGNOSIS AND TESTING - DOOR LOCK
RELAY
The power lock relays (Fig. 4) are located in the
Junction Block (JB) under the instrument panel. For
complete circuit diagrams, 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.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, SEAT BELT TENSIONER, SIDE
AIRBAG, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISO-
LATE THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYS-
TEM CAPACITOR TO DISCHARGE BEFORE PER-
FORMING FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Remove suspected faulty relay from the (JB).
(2) A relay in the de-energized position should
have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
to Step 3. If not OK, replace the faulty relay.
(3) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75   8 ohms. If OK, go to Step
4. If not OK, replace the faulty relay.
(4) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If not OK, replace the faulty relay.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Reach up under instrument panel and remove
the relay from Junction Block (JB).
8N - 6 POWER LOCKSKJ
FLIP-UP GLASS RELEASE SWITCH (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)