🏷️ Basic Information

Make:

Jeep

Model:

Liberty

Year:

2002

Platform Code:

KJ

👋 Introduction

Segment:

Compact SUV / Crossover

Target Audience:

Individuals seeking a capable, off-road-oriented compact SUV, often for light trail use or as a practical daily driver.

Key Competitors:

Ford Escape, Honda CR-V, Toyota RAV4, Nissan Xterra (though slightly larger), Chevrolet Tracker.

Design Philosophy:

Combines Jeep's rugged, off-road heritage with more compact SUV practicality and car-like ride comfort.

Drivetrain Options:

Available in 2WD and 4WD configurations, with Jeep's signature Trail Rated capability in 4WD models.

Body Style:

Five-door SUV body.

📋 Manual Details

General Coverage:

Comprehensive mechanical and electrical service for the 2002 Jeep Liberty.

Specific Systems:

Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body.

Estimated Pages:

1500+

Type:

Workshop Service Manual / Repair Manual

Language:

English

Format:

ebook (likely PDF)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, block, pistons, crankshaft, camshafts, valve train, lubrication system, cooling system, fuel system (injection).

Engine Performance:

Engine tune-up, diagnostics, performance specifications.

Transmission Automatic:

Service and repair of the automatic transmission, including disassembly, assembly, valve body, torque converter, and electronic controls.

Transmission Manual:

Service and repair of the manual transmission, including clutch, gearbox, and related components.

Drivetrain 4Wd:

Service and repair of the transfer case, front axle, rear axle, driveshafts, and constant velocity (CV) joints.

Suspension Front:

Independent front suspension (IFS) components, including control arms, ball joints, shock absorbers, springs, and stabilizer bars.

Suspension Rear:

Rear axle beam, shock absorbers, springs, and trailing arms.

Steering:

Power steering system, steering column, steering gear, tie rods, and linkages.

Brakes:

Front and rear brake systems (disc/drum or disc/disc depending on trim), ABS, hydraulic lines, calipers, rotors, master cylinder, and parking brake.

Electrical Charging:

Alternator, voltage regulator, battery, and charging system diagnostics.

Electrical Starting:

Starter motor, ignition switch, and starting system diagnostics.

Electrical Lighting:

Headlights, taillights, interior lighting, and wiring diagrams for lighting circuits.

Electrical Instruments:

Instrument cluster, gauges, warning lights, and their related circuits.

Electrical Audio:

Radio, speakers, and antenna system (may be basic).

Electrical Power Windows:

Power window regulators, motors, switches, and associated wiring.

Electrical Door Locks:

Power door lock actuators, switches, and wiring.

Electrical Wipers:

Windshield wiper motor, linkage, switches, and washer system.

Electrical Trailer Towing:

Trailer lighting circuits and brake controller wiring (if applicable).

HVAC:

Heating, ventilation, and air conditioning system components, refrigerant, operation, and diagnostics.

Body Exterior:

Body panels, doors, hood, tailgate, bumpers (front and rear), fenders, mirrors, glass, and seals.

Body Interior:

Interior trim panels, seats, carpeting, headliner, dashboard, and console.

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tire rotations, spark plug replacement.

Troubleshooting:

Diagnostic procedures for common problems, symptom-based troubleshooting guides.

Major Repairs:

Engine rebuilds, transmission overhauls, suspension component replacement, brake caliper replacement.

Component Removal Installation:

Step-by-step instructions for removing and installing nearly all vehicle components.

Wiring Diagrams:

Detailed electrical wiring schematics for various vehicle systems.

Depth Level:

Comprehensive, suitable for professional technicians and advanced DIY enthusiasts.

Diagnostic Coverage:

Includes diagnostic trouble codes (DTCs) and troubleshooting procedures, often requiring a scan tool.

Torque Specifications:

Detailed torque values for all critical fasteners.

Clearances And Tolerances:

Engine and transmission component clearances and acceptable wear tolerances.

📊 Manual Specifications

Format Details:

Digital ebook, likely a PDF file optimized for viewing and printing.

Searchability:

Typically searchable text content for quick information retrieval.

Printability:

Designed for printing individual pages or sections.

Binding:

Not applicable for ebook format; for a printed version, typically a comb or perfect binding.

Paper:

Not applicable for ebook format; for a printed version, typically standard or heavy-weight paper.

⚙️ Engine Specifications

Engine Code 1:

4.0L Inline-6 (PowerTech)

Displacement 1:

3956 cc (241 cu in)

Bore X Stroke 1:

98.4 mm x 86.7 mm (3.87 in x 3.41 in)

Compression Ratio 1:

8.8:1

Horsepower 1:

190 hp @ 4600 rpm

Torque 1:

235 lb-ft @ 3000 rpm

Fuel Induction 1:

Sequential Multi-Port Fuel Injection (MPI)

Valve Train 1:

Overhead Valve (OHV) with Pushrods, 12 valves (2 per cylinder)

Ignition System 1:

Distributorless Ignition System (DIS) with Coil-on-Plug (COP) ignition

Engine Code 2:

2.4L DOHC I4 (EDM)

Displacement 2:

2429 cc (148 cu in)

Horsepower 2:

150 hp @ 5200 rpm

Torque 2:

169 lb-ft @ 4000 rpm

Fuel Induction 2:

Multi-Point Fuel Injection (MPI)

Valve Train 2:

Dual Overhead Camshafts (DOHC), 16 valves

🔧 Transmission

Transmission Type 1:

42RLE 4-Speed Automatic (with 2.4L I4)

Transmission Type 2:

45RFE 4-Speed Automatic (with 4.0L I6)

Transmission Type 3:

NV156/NV235 Transfer Case (4WD models)

Overdrive:

All automatic transmissions feature overdrive gears.

Locking Differential:

Optional rear locking differential on select 4WD trims.

📐 Dimensions

Length:

173.5 in (4407 mm)

Width:

72.3 in (1836 mm)

Height:

66.4 in (1687 mm)

Wheelbase:

104.1 in (2644 mm)

Ground Clearance:

8.1 in (206 mm) (4WD)

Cargo Volume Behind Rear Seat:

38.0 cu ft (1076 L)

Cargo Volume Max:

66.3 cu ft (1877 L)

Curb Weight:

3745 - 4138 lbs (1700 - 1877 kg) (Varies by configuration)

Towing Capacity:

Up to 3500 lbs (1588 kg) (when properly equipped)

🛡️ Safety Features

NHTSA Frontal Driver:

Good

NHTSA Frontal Passenger:

Good

NHTSA Side Driver:

Acceptable

NHTSA Side Rear Passenger:

Acceptable

IIHS Frontal Offset:

Acceptable

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional Traction Control System (TCS)

Airbags Front:

Standard front airbags

Airbags Side:

Optional front side-impact airbags

Seatbelts:

Three-point seat belts for all occupants

💡 Technology Features

Audio System:

Base AM/FM stereo with CD player, optional premium Infinity sound system available.

Display:

Basic digital or analog displays for climate control and audio.

ABS:

Standard

Traction Control:

Optional

Cruise Control:

Standard

Aux Input:

Not standard on all models, often requires aftermarket integration.

Bluetooth:

Not available from the factory for the 2002 model year.

🔧 Maintenance

Oil Change Interval:

Every 3,000-7,500 miles (4,800-12,070 km) or 6 months, depending on driving conditions and oil type (refer to manual for specifics).

Air Filter Replacement:

Every 15,000-30,000 miles (24,140-48,280 km) or as needed based on dusty conditions.

Spark Plug Replacement 4.0L:

Approximately 100,000 miles (160,934 km) with high-quality iridium plugs.

Transmission Fluid Change:

Every 30,000-60,000 miles (48,280-96,560 km) for automatic transmission fluid (ATF).

Coolant Flush:

Every 30,000-50,000 miles (48,280-80,467 km).

Brake Fluid Flush:

Every 2-3 years or 30,000 miles (48,280 km).

Engine Oil 4.0L:

API SN or SP, SAE 10W-30 (or 5W-30 for colder climates). Capacity: 6 US quarts (5.7 L) with filter.

Engine Oil 2.4L:

API SN or SP, SAE 5W-30. Capacity: 5 US quarts (4.7 L) with filter.

Transmission Fluid 45Rfe:

Mopar ATF+4 (or equivalent meeting MS-9602 specification). Capacity: 6.5 US quarts (6.2 L) pan drain.

Transmission Fluid 42Rle:

Mopar ATF+4 (or equivalent meeting MS-9602 specification). Capacity: 4.5 US quarts (4.3 L) pan drain.

Coolant:

Mopar OAT (Organic Additive Technology) 5/150 Extended Life Antifreeze/Coolant (or equivalent HOAT/OAT meeting Chrysler MS-10893 or MS-12072). Capacity: 11.1 US quarts (10.5 L) for 4.0L.

Power Steering Fluid:

Mopar Power Steering Fluid (or equivalent meeting Chrysler MS-5937 specification).

Brake Fluid:

DOT 3 or DOT 4 Brake Fluid.

Common Issue 1:

Cracked cylinder heads on the 4.0L inline-6 engine (though less common than in earlier Cherokees, it can occur).

Common Issue 2:

Front differential pinion seal leaks.

Common Issue 3:

Transfer case chain stretch or wear.

Common Issue 4:

Rear axle seal leaks.

Common Issue 5:

Various electrical gremlins, often related to grounds or body control modules.

Common Issue 6:

Power steering pump leaks or noise.

📚 Vehicle History

Brand:

Jeep

Heritage Points:

Renowned for off-road capability, ruggedness, and iconic designs (Willys MB, CJ, Wrangler, Cherokee XJ).

Model Introduction:

The Jeep Liberty (KJ) was introduced for the 2002 model year, replacing the aging Jeep Cherokee (XJ) in the compact SUV segment.

Design Influence:

Designed by Trevor Hill, featuring a distinctive, somewhat polarizing ' Giải pháp ' exterior styling, a departure from the XJ's more traditional boxy look. It aimed for a balance of off-road prowess and on-road comfort.

Generation 1 Codes:

KJ (2002-2007)

Production Location:

Toledo, Ohio, USA; also assembled in Venezuela and China.

🏆 Awards & Recognition

Off Road Capability:

Praised for its off-road capability, especially with the 4.0L engine and 4WD system, often earning a 'Trail Rated' badge.

Consumer Reports Reliability:

Variable; often cited as average or below average, particularly concerning early model year issues.