2002 JEEP LIBERTY Workshop Manual

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)

SWITCH
POSITIONCONTINUITY BETWEEN PINS
DRIVER SEAT PASSENGER
SEAT
OFF PIN1to3 PIN1to3
PIN1to6 PIN1to6
PIN1to7 PIN1to7
PIN1to8 PIN1to8
PIN1to9 PIN1to9
PIN1to10 PIN1to10
FRONT RISER
UPPIN1to8 PIN1to8
PIN5to9 PIN5to9
FRONT RISER
DOWNPIN1to9 PIN1to9
PIN5to8 PIN5to8
CENTER
SWITCH
FORWARDPIN1to6 PIN1to6
PIN5to3 PIN5to3
CENTER
SWITCH
REARWARDPIN1to3 PIN1to3
PIN5to6 PIN5to6
REAR RISER
UPPIN1to7 PIN1to7
PIN5to10 PIN5to10
REAR RISER
DOWNPIN1to10 PIN1to10
PIN5to7 PIN5to7
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Using a push pin remover or another suitable
wide flat-bladed tool, gently pry the power seat
switch knob off of the switch control levers (Fig. 7).
(3) Remove the two forward-most screws that
secure the outboard seat cushion side shield to the
seat cushion frame.
(4) Remove the recliner handle retaining screw
and remove the recliner handle.
(5) Pull the outboard seat cushion side shield away
from the seat cushion frame far enough to access the
power seat switch wire harness tiestrap and connec-
tor. Cut the tiestrap, if equipped.
(6) Disconnect the power seat wire harness connec-
tor from the power seat switch connector receptacle.
Depress the connector retaining tab and pull straight
apart.(7) Using a very short phillips-headed screwdriver,
remove the two screws that secure the power seat
switch to the inside of the outboard seat cushion side
shield.
(8) Remove the power seat switch from the out-
board seat cushion side shield.
INSTALLATION
(1) Reconnect the power seat wire harness connec-
tor to the power seat switch connector receptacle.
(2) Position the power seat switch onto the out-
board seat cushion side shield. Make certain the
alignment dowel is inserted into the corresponding
hole in the power seat switch.
(3) Install and tighten the two screws that secure
the power seat switch to the inside of the outboard
seat cushion side shield. Tighten the screws to 1.5
N´m (14 in. lbs.).
(4) Position the outboard seat cushion side shield
onto the seat cushion frame
(5) Install and tighten the two screws that secure
the outboard seat cushion side shield to the seat
cushion frame. Tighten the screws to 1.5 N´m (14 in.
lbs.).
(6) Install the recliner handle and retaining screw.
Tighten the screws to 1.5 N´m (14 in. lbs.).
(7) Position the power seat switch knob onto the
switch control levers and push firmly and evenly
until it snaps into place.
(8) Reconnect the battery negative cable.
Fig. 7 REMOVING SWITCH CONTROL KNOB -
TYPICAL
8N - 18 POWER SEATSKJ
LEFT POWER SEAT SWITCH (Continued)

RIGHT 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.
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.
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 - RIGHT 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. 8) and
switch (Fig. 9) below. If OK, refer toDiagnosis and
Testing the Power Seat Trackin this section. If
not OK, replace the faulty power seat switch unit.
Fig. 8 SIX-WAY POWER SEAT SWITCH CONTINUITY
Fig. 9 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 - 19

SWITCH
POSITIONCONTINUITY BETWEEN PINS
DRIVER SEAT PASSENGER
SEAT
OFF PIN1to3 PIN1to3
PIN1to6 PIN1to6
PIN1to7 PIN1to7
PIN1to8 PIN1to8
PIN1to9 PIN1to9
PIN1to10 PIN1to10
FRONT RISER
UPPIN1to8 PIN1to8
PIN5to9 PIN5to9
FRONT RISER
DOWNPIN1to9 PIN1to9
PIN5to8 PIN5to8
CENTER
SWITCH
FORWARDPIN1to6 PIN1to6
PIN5to3 PIN5to3
CENTER
SWITCH
REARWARDPIN1to3 PIN1to3
PIN5to6 PIN5to6
REAR RISER
UPPIN1to7 PIN1to7
PIN5to10 PIN5to10
REAR RISER
DOWNPIN1to10 PIN1to10
PIN5to7 PIN5to7
REMOVAL
(1) Disconnect and isolate the negative battery
cable.
(2) Using a push pin remover or another suitable
wide flat-bladed tool, gently pry the power seat
switch knob off of the switch control levers (Fig. 10).
(3) Remove the two forward-most screws that
secure the outboard seat cushion side shield to the
seat cushion frame.
(4) Remove the recliner handle retaining screw
and remove the recliner handle.
(5) Pull the outboard seat cushion side shield away
from the seat cushion frame far enough to access the
power seat switch wire harness tiestrap and connec-
tor. Cut the tiestrap, if equipped.
(6) Disconnect the power seat wire harness connec-
tor from the power seat switch connector receptacle.
Depress the connector retaining tab and pull straight
apart.(7) Using a very short phillips-headed screwdriver,
remove the two screws that secure the power seat
switch to the inside of the outboard seat cushion side
shield.
(8) Remove the power seat switch from the out-
board seat cushion side shield.
INSTALLATION
(1) Reconnect the power seat wire harness connec-
tor to the power seat switch connector receptacle.
(2) Position the power seat switch onto the out-
board seat cushion side shield. Make certain the
alignment dowel is inserted into the corresponding
hole in the power seat switch.
(3) Install and tighten the two screws that secure
the power seat switch to the inside of the outboard
seat cushion side shield. Tighten the screws to 1.5
N´m (14 in. lbs.).
(4) Position the outboard seat cushion side shield
onto the seat cushion frame
(5) Install and tighten the two screws that secure
the outboard seat cushion side shield to the seat
cushion frame. Tighten the screws to 1.5 N´m (14 in.
lbs.).
(6) Install the recliner handle and retaining screw.
Tighten the screws to 1.5 N´m (14 in. lbs.).
(7) Position the power seat switch knob onto the
switch control levers and push firmly and evenly
until it snaps into place.
(8) Reconnect the battery negative cable.
Fig. 10 REMOVING SWITCH CONTROL KNOB -
TYPICAL
8N - 20 POWER SEATSKJ
RIGHT POWER SEAT SWITCH (Continued)

POWER WINDOWS
TABLE OF CONTENTS
page page
POWER WINDOWS
DESCRIPTION.........................21
OPERATION...........................21
DIAGNOSIS AND TESTING - POWER
WINDOWS...........................21
WINDOW MOTOR
REMOVAL.............................22WINDOW SWITCH
DIAGNOSIS AND TESTING - WINDOW
SWITCH............................22
REMOVAL.............................23
INSTALLATION.........................23
POWER WINDOWS
DESCRIPTION
The power window system allows each of the door
windows to be raised and lowered electrically by
actuating a switch on the center console. A master
switch on the front of the center console allows the
driver to raise or lower each of the passenger door
windows and to lock out the individual switches on
the rear of the center console from operation. The
power window system receives battery feed through
fuse 13 in the Power Distribution Center (PDC), only
when the ignition switch is in the RUN or ACCES-
SORY position.
OPERATION
WINDOW SWITCH
The power window switches control the battery
and ground feeds to the power window motors. Both
of the rear door power window switches receive their
battery and ground feeds through the circuitry of the
front window switch. When the power window lock-
out switch is in the Lock position, the battery feed
for the rear door window switches is interrupted.
WINDOW MOTOR
Front door window lift motors use permanent type
magnets. The B+ and ground applied at the motor
terminal pins will cause the motor to rotate in one
direction. Reversing current through the motor ter-
minals will cause the motor to rotate in the opposite
direction.
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.
DIAGNOSIS AND TESTING - POWER
WINDOWS
WIRING VOLTAGE TEST
The following wiring test determines whether or
not voltage is continuous through the body harness
to the front switch.
(1) Remove the power window switch and bezel
(Refer to 8 - ELECTRICAL/POWER WINDOWS/
POWER WINDOW SWITCH - REMOVAL).
(2) Disconnect wire connector from back of power
window switch.
(3) Switch ignition to the ON position.
(4) Connect the clip end of a 12 volt test light to
Pin 14 of the window switch harness connector.
Touch the test light probe to Pin 10.
²If the test light illuminates, the wiring circuit
between the battery and switch is OK.
²If the lamp does not illuminate, first check fuse
13 in the Power Distribution Center (PDC). If fuse 13
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 WINDOW MOTOR TEST
If the power window motor is receiving proper cur-
rent and ground and does not operate, proceed with
motor test. Refer to the appropriate wiring informa-
tion. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
details of wire harness routing and retention, connec-
tor pin-out information and location views for the
various wire harness connectors, splices and grounds.
(1) Remove front door trim panel as necessary to
gain access to power window motor wire connector
KJPOWER WINDOWS 8N - 21