2002 JEEP LIBERTY eco

JEEP
ž
2002
LIBERTY
SERVICE MANUAL and
2.4L GAS SUPPLEMENT
To order the special service tools used and
illustrated, please refer to the instructions on
inside back cover.
NO PART OF THIS PUBLICATION MAY BE
REPRODUCED, STORED IN A RETRIEVAL
SYSTEM, OR TRANSMITTED, IN ANY FORM OR
BY ANY MEANS, ELECTRONIC, MECHANICAL,
PHOTOCOPYING, RECORDING, OR OTHERWISE,
WITHOUT THE PRIOR WRITTEN PERMISSION
OF DAIMLERCHRYSLER CORPORATION.
DaimlerChrysler Corporation reserves the right to make changes in design or
to make additions to or improvements in its products without imposing any
obligations upon itself to install them on its products previously manufac-
tured.
Litho in U.S.A. Copyright 2001 DaimlerChrysler Corporation
7.5M0901

FASTENER USAGE
DESCRIPTION
DESCRIPTION
WARNING: USE OF AN INCORRECT FASTENER
MAY RESULT IN COMPONENT DAMAGE OR PER-
SONAL INJURY.
Figure art, specifications and torque references in
this Service Manual are identified in metric and SAE
format.
During any maintenance or repair procedures, it is
important to salvage all fasteners (nuts, bolts, etc.)
for reassembly. If the fastener is not salvageable, a
fastener of equivalent specification must be used.
DESCRIPTION
Most stripped threaded holes can be repaired using
a Helicoilt. Follow the vehicle or Helicoiltrecommen-
dations for application and repair procedures.
THREADED HOLE REPAIR
DESCRIPTION
Most stripped threaded holes can be repaired using
a Helicoilt. Follow the vehicle or Helicoiltrecommen-
dations for application and repair procedures.
INTERNATIONAL SYMBOLS
DESCRIPTION
The graphic symbols illustrated in the following
International Control and Display Symbols Chart
(Fig. 3) are used to identify various instrument con-
trols. The symbols correspond to the controls and dis-
plays that are located on the instrument panel.
Fig. 3 INTERNATIONAL CONTROL AND DISPLAY SYMBOLS
1 High Beam 13 Rear Window Washer
2 Fog Lamps 14 Fuel
3 Headlamp, Parking Lamps, Panel Lamps 15 Engine Coolant Temperature
4 Turn Warning 16 Battery Charging Condition
5 Hazard Warning 17 Engine Oil
6 Windshield Washer 18 Seat Belt
7 Windshield Wiper 19 Brake Failure
8 Windshield Wiper and Washer 20 Parking Brake
9 Windscreen Demisting and Defrosting 21 Front Hood
10 Ventilating Fan 22 Rear hood (Decklid)
11 Rear Window Defogger 23 Horn
12 Rear Window Wiper 24 Lighter
4 INTRODUCTIONKJ

VEHICLE EMISSION CONTROL
INFORMATION (VECI) LABEL
DESCRIPTION
All models have a Vehicle Emission Control Infor-
mation (VECI) Label. DaimlerChrysler permanently
attaches the label in the engine compartment (Fig.
4). The label cannot be removed without defacing
label information and destroying label.
The label contains the vehicle's emission specifica-
tions and vacuum hose routings. All hoses must be
connected and routed according to the label.
The label also contains an engine vacuum sche-
matic. There are unique labels for vehicles built for
sale in the state of California and the country of
Canada. Canadian labels are written in both the
English and French languages.
The VECI label contains the following:
²Engine family and displacement
²Evaporative family
²Emission control system schematic
²Certification application
²Engine timing specifications (if adjustable)
²Idle speeds (if adjustable)
²Spark plug and gap
VEHICLE IDENTIFICATION
NUMBER
DESCRIPTION
The Vehicle Identification Number (VIN) plate is
located on the lower left A-pillar and is visible
through the windshield (Fig. 5). The VIN contains 17
characters that provide data concerning the vehicle.
Refer to the VIN decoding chart to determine the
identification of a vehicle.
The Vehicle Identification Number is also
imprinted on the:
²Vehicle Safety Certification Label.
²Frame rail.
To protect the consumer from theft and possible
fraud the manufacturer is required to include a
Check Digit at the ninth position of the Vehicle Iden-
tification Number. The check digit is used by the
manufacturer and government agencies to verify the
authenticity of the vehicle and official documenta-
tion. The formula to use the check digit is not
released to the general public.
Fig. 4 VECI LABEL LOCATION
1 - RADIATOR SUPPORT
2 - VECI LABEL
Fig. 5 VIN NUMBER LOCATION
1 - A-PILLAR
2 - VIN CODE PLATE
8 INTRODUCTIONKJ

VEHICLE IDENTIFICATION NUMBER DECODING CHART
POSITION INTERPRETATION CODE = DESCRIPTION
1 Country of Origin 1 = United States
2 Make J = Jeep
3 Vehicle Type 4 = MPV W/O Side Airbags.
8 = MPV With Side Airbags.
4 Gross Vehicle Weight Rating F = 4001 - 5000 lbs.
G = 5001 - 6000 lbs.
5 Vehicle Line K = Liberty 4X2 (LHD)
L = Liberty 4X4 (LHD)
M = Cherokee 4X4 (RHD)
6 Series 3 = Liberty Renegade
4 = Liberty Sport/Cherokee Sport
5 = Liberty Limited/Cherokee Limited
7 Body Style 8 = Sport Utility - 4 Door
8 Engine K = 3.7L 6 cyl MPI Gasoline
1 = 2.4L 4 cyl MPI Gasoline
7 = 2.5L 4 cyl Diesel
9 Check Digit 0 through 9 or X
10 Model Year 2=2002
11 Assembly Plant W = Toledo North Assembly Plant
12 thru 17 Vehicle Build Sequence
VEHICLE SAFETY
CERTIFICATION LABEL
DESCRIPTION
A vehicle safety certification label (Fig. 6) is
attached to every DaimlerChrysler Corporation vehi-
cle. The label certifies that the vehicle conforms to all
applicable Federal Motor Vehicle Safety Standards.
The label also lists:
²Month and year of vehicle manufacture.
²Gross Vehicle Weight Rating (GVWR). The gross
front and rear axle weight ratings (GAWR's) arebased on a minimum rim size and maximum cold tire
inflation pressure.
²Vehicle Identification Number (VIN).
²Type of vehicle.
²Bar code.
²Month, Day and Hour (MDH) of final assembly.
²Paint and Trim codes.
²Country of origin.
The label is located above the door hinge on the
driver-side A-pillar.
Fig. 6 Vehicle Safety Certification LabelÐTypical
KJINTRODUCTION 9
VEHICLE IDENTIFICATION NUMBER (Continued)

LUBRICATION & MAINTENANCE
TABLE OF CONTENTS
page page
INTERNATIONAL SYMBOLS
DESCRIPTION Ð INTERNATIONAL SYMBOLS . . 1
FLUID TYPES
DESCRIPTION
DESCRIPTION - FLUID TYPES............1
DESCRIPTION - AXLE...................2
DESCRIPTION - MANUAL TRANSMISSION . . . 2
DESCRIPTION - AUTOMATIC
TRANSMISSION FLUID..................2
DESCRIPTION - TRANSFER CASE - NV231 . . 3
DESCRIPTION - TRANSFER CASE - NV242 . . 3
DESCRIPTION - ENGINE COOLANT........3
OPERATION - AUTOMATIC TRANSMISSION
FLUID...............................4FLUID CAPACITIES
SPECIFICATIONS - FLUID CAPACITIES.......4
FLUID FILL/CHECK LOCATIONS
DESCRIPTION..........................5
MAINTENANCE SCHEDULES
DESCRIPTION..........................5
HOISTING
STANDARD PROCEDURE - HOISTING
RECOMMENDATIONS...................5
JUMP STARTING
STANDARD PROCEDURE - JUMP STARTING
PROCEDURE.........................6
TOWING
STANDARD PROCEDURE - TOWING.........6
INTERNATIONAL SYMBOLS
DESCRIPTION Ð INTERNATIONAL SYMBOLS
DaimlerChrysler Corporation uses international
symbols to identify engine compartment lubricant
and fluid inspection and fill locations (Fig. 1).
FLUID TYPES
DESCRIPTION
DESCRIPTION - FLUID TYPES
When service is required, DaimlerChrysler Corpo-
ration recommends that only Mopartbrand parts,
lubricants and chemicals be used. Mopartprovides
the best engineered products for servicing
DaimlerChrysler Corporation vehicles.
Only lubricants bearing designations defined by
the following organization should be used to service a
Chrysler Corporation vehicle.
²Society of Automotive Engineers (SAE)
²American Petroleum Institute (API) (Fig. 2)
²National Lubricating Grease Institute (NLGI)
(Fig. 3)
SAE VISCOSITY RATING
An SAE viscosity grade is used to specify the vis-
cosity of engine oil. These are specified with a dual
SAE viscosity grade which indicates the cold-to-hot
temperature viscosity range. Example SAE 5W-30 =
multigrade engine oil.
DaimlerChrysler Corporation only recommends
multigrade engine oils.
Fig. 1 International Symbols
KJLUBRICATION & MAINTENANCE 0 - 1

API QUALITY CLASSIFICATION
This symbol (Fig. 2) on the front of an oil container
means that the oil has been certified by the Ameri-
can Petroleum Institute (API) to meet all the lubri-
cation requirements specified by DaimlerChrysler
Corporation.
GEAR LUBRICANTS
SAE ratings also apply to multigrade gear lubri-
cants. In addition, API classification defines the
lubricants usage. Such as API GL-5 and SAE 75W-
90.
LUBRICANTS AND GREASES
Lubricating grease is rated for quality and usage
by the NLGI. All approved products have the NLGI
symbol (Fig. 3) on the label. At the bottom NLGI
symbol is the usage and quality identification letters.
Wheel bearing lubricant is identified by the letter
ªGº. Chassis lubricant is identified by the latter ªLº.
The letter following the usage letter indicates the
quality of the lubricant. The following symbols indi-
cate the highest quality.
SPECIALIZED LUBRICANTS AND OILS
Some maintenance or repair procedures may
require the use of specialized lubricants or oils. Con-
sult the appropriate sections in this manual for the
correct application of these lubricants.
DESCRIPTION - AXLE
A multi-purpose, hypoid gear lubricant which con-
forms to MIL-L-2105C and API GL 5 quality specifi-
cations should be used. Mopar Hypoid Gear
Lubricants conforms to these specifications.
FRONT AXLE
²Lubricant for 186FIA (Model 30) axle is SAE
75W-140 SYNTHETIC.
REAR AXLE
²Lubricant for 198RBI (Model 35) axle is SAE
75W-140 SYNTHETIC.
²Lubricant for 8 1/4 axle is a thermally stable
SAE 75W-90. For trailer tow or heavy duty applica-
tions the lubricant should be replaced with SAE
75W-140 SYNTHETIC.
NOTE: Trac-lokTequipped axles require a friction
modifier be added to the lubricant.
CAUTION: If axle is submerged in water, lubricant
must be replaced immediately to avoid possible
premature axle failure.
DESCRIPTION - MANUAL TRANSMISSION
Mopartmanual transmission fluid is the lubricant
recommended for the NV1500 and the NV3550 trans-
missions.
DESCRIPTION - AUTOMATIC TRANSMISSION
FLUID
NOTE: Refer to the maintenance schedules in this
group for the recommended maintenance (fluid/filter
change) intervals for this transmission.
NOTE: Refer to Service Procedures in this group for
fluid level checking procedures.
MopartATF +4, type 9602, Automatic Transmis-
sion Fluid is the recommended fluid for
DaimlerChrysler automatic transmissions.
Dexron II fluid IS NOT recommended. Clutch
chatter can result from the use of improper
fluid.
MopartATF +4, type 9602, Automatic Transmis-
sion Fluid when new is red in color. The ATF is dyed
red so it can be identified from other fluids used in
the vehicle such as engine oil or antifreeze. The red
color is not permanent and is not an indicator of fluid
condition. As the vehicle is driven, the ATF will begin
to look darker in color and may eventually become
brown.This is normal.ATF+4 also has a unique
Fig. 2 API Symbol
Fig. 3 NLGI Symbol
1 - WHEEL BEARINGS
2 - CHASSIS LUBRICATION
3 - CHASSIS AND WHEEL BEARINGS
0 - 2 LUBRICATION & MAINTENANCEKJ
FLUID TYPES (Continued)

odor that may change with age. Consequently, odor
and color cannot be used to indicate the fluid condi-
tion or the need for a fluid change.
FLUID ADDITIVES
DaimlerChrysler strongly recommends against the
addition of any fluids to the transmission, other than
those automatic transmission fluids listed above.
Exceptions to this policy are the use of special dyes
to aid in detecting fluid leaks.
Various ªspecialº additives and supplements exist
that claim to improve shift feel and/or quality. These
additives and others also claim to improve converter
clutch operation and inhibit overheating, oxidation,
varnish, and sludge. These claims have not been sup-
ported to the satisfaction of DaimlerChrysler and
these additivesmust not be used.The use of trans-
mission ªsealersº should also be avoided, since they
may adversely affect the integrity of transmission
seals.
DESCRIPTION - TRANSFER CASE - NV231
Recommended lubricant for the NV231 transfer
case is MopartATF +4, type 9602, Automatic Trans-
mission Fluid.
DESCRIPTION - TRANSFER CASE - NV242
Recommended lubricant for the NV242 transfer
case is MopartATF+4, type 9602 Automatic Trans-
mission Fluid.
DESCRIPTION - ENGINE COOLANT
WARNING: ANTIFREEZE IS AN ETHYLENE GLYCOL
BASE COOLANT AND IS HARMFUL IF SWAL-
LOWED OR INHALED. IF SWALLOWED, DRINK
TWO GLASSES OF WATER AND INDUCE VOMIT-
ING. IF INHALED, MOVE TO FRESH AIR AREA.
SEEK MEDICAL ATTENTION IMMEDIATELY. DO NOT
STORE IN OPEN OR UNMARKED CONTAINERS.
WASH SKIN AND CLOTHING THOROUGHLY AFTER
COMING IN CONTACT WITH ETHYLENE GLYCOL.
KEEP OUT OF REACH OF CHILDREN. DISPOSE OF
GLYCOL BASE COOLANT PROPERLY, CONTACT
YOUR DEALER OR GOVERNMENT AGENCY FOR
LOCATION OF COLLECTION CENTER IN YOUR
AREA. DO NOT OPEN A COOLING SYSTEM WHEN
THE ENGINE IS AT OPERATING TEMPERATURE OR
HOT UNDER PRESSURE, PERSONAL INJURY CAN
RESULT. AVOID RADIATOR COOLING FAN WHEN
ENGINE COMPARTMENT RELATED SERVICE IS
PERFORMED, PERSONAL INJURY CAN RESULT.
CAUTION: Use of Propylene Glycol based coolants
is not recommended, as they provide less freeze
protection and less corrosion protection.The cooling system is designed around the coolant.
The coolant must accept heat from engine metal, in
the cylinder head area near the exhaust valves and
engine block. Then coolant carries the heat to the
radiator where the tube/fin radiator can transfer the
heat to the air.
The use of aluminum cylinder blocks, cylinder
heads, and water pumps requires special corrosion
protection. MopartAntifreeze/Coolant, 5
Year/100,000 Mile Formula (MS-9769), or the equiva-
lent ethylene glycol base coolant with organic corro-
sion inhibitors (called HOAT, for Hybrid Organic
Additive Technology) is recommended. This coolant
offers the best engine cooling without corrosion when
mixed with 50% Ethylene Glycol and 50% distilled
water to obtain a freeze point of -37ÉC (-35ÉF). If it
loses color or becomes contaminated, drain, flush,
and replace with fresh properly mixed coolant solu-
tion.
CAUTION: MoparTAntifreeze/Coolant, 5
Year/100,000 Mile Formula (MS-9769) may not be
mixed with any other type of antifreeze. Mixing of
coolants other than specified (non-HOAT or other
HOAT), may result in engine damage that may not
be covered under the new vehicle warranty, and
decreased corrosion protection.
COOLANT PERFORMANCE
The required ethylene-glycol (antifreeze) and water
mixture depends upon climate and vehicle operating
conditions. The coolant performance of various mix-
tures follows:
Pure Water-Water can absorb more heat than a
mixture of water and ethylene-glycol. This is for pur-
pose of heat transfer only. Water also freezes at a
higher temperature and allows corrosion.
100 percent Ethylene-Glycol-The corrosion
inhibiting additives in ethylene-glycol need the pres-
ence of water to dissolve. Without water, additives
form deposits in system. These act as insulation
causing temperature to rise to as high as 149ÉC
(300ÉF). This temperature is hot enough to melt plas-
tic and soften solder. The increased temperature can
result in engine detonation. In addition, 100 percent
ethylene-glycol freezes at -22ÉC (-8ÉF).
50/50 Ethylene-Glycol and Water-Is the recom-
mended mixture, it provides protection against freez-
ing to -37ÉC (-34ÉF). The antifreeze concentration
must alwaysbe a minimum of 44 percent, year-
round in all climates. If percentage is lower, engine
parts may be eroded by cavitation. Maximum protec-
tion against freezing is provided with a 68 percent
antifreeze concentration, which prevents freezing
down to -67.7ÉC (-90ÉF). A higher percentage will
freeze at a warmer temperature. Also, a higher per-
KJLUBRICATION & MAINTENANCE 0 - 3
FLUID TYPES (Continued)

FLUID FILL/CHECK
LOCATIONS
DESCRIPTION
The fluid check/fill point locations are located in
each applicable service manual section.
MAINTENANCE SCHEDULES
DESCRIPTION
9Maintenance Schedule Information not included in
this section, is located in the appropriate Owner's
Manual.9
HOISTING
STANDARD PROCEDURE - HOISTING
RECOMMENDATIONS
Refer to the Owner's Manual for emergency vehicle
lifting procedures.
When properly positioned, a floor jack can be used
to lift a Jeep vehicle (Fig. 4). Support the vehicle in
the raised position with jack stands at the front and
rear ends of the frame rails.CAUTION: Do not attempt to lift a Jeep vehicle with
a floor jack positioned under:
²A body side sill.
²A steering linkage component.
²A drive shaft.
²The engine or transmission oil pan.
²The fuel tank.
²A front suspension arm.
²Transfer case.
NOTE: Use the correct sub-frame rail or frame rail
lifting locations only.
HOIST
Refer to the Owner's Manual for emergency vehicle
lifting procedures.
A vehicle can be lifted with:
²A single-post, frame-contact hoist.
²A twin-post, chassis hoist.
²A ramp-type, drive-on hoist.
NOTE: When a frame-contact type hoist is used,
verify that the lifting pads are positioned properly.
WARNING: THE HOISTING AND JACK LIFTING
POINTS PROVIDED ARE FOR A COMPLETE VEHI-
CLE. WHEN A CHASSIS OR DRIVETRAIN COMPO-
NENT IS REMOVED FROM A VEHICLE, THE
CENTER OF GRAVITY IS ALTERED MAKING SOME
HOISTING CONDITIONS UNSTABLE. PROPERLY
SUPPORT OR SECURE VEHICLE TO HOISTING
DEVICE WHEN THESE CONDITIONS EXIST.
Fig. 4 Correct Vehicle Lifting Locations
1 - Frame Contact Lift (Single Post)
Chassis Lift (Non-Axle Dual Post)
Outboard Lift (Dual Post)
Floor Jack
2 - Floor Jack
KJLUBRICATION & MAINTENANCE 0 - 5