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Jeep Liberty KJ 2003 WSM Service Manual Repair
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🏷️ Basic Information Identification Make: Jeep Model: Liberty Year: 2003 Codes Chassis Code: KJ 👋 Introduction Market Position Vehicle Segment: Compact SUV / Off-road oriented Competitive Analysis Key Competitors: Ford...
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🏷️ Basic Information
Identification
Make:
Jeep
Model:
Liberty
Year:
2003
Codes
Chassis Code:
KJ
👋 Introduction
Market Position
Vehicle Segment:
Compact SUV / Off-road oriented
Competitive Analysis
Key Competitors:
Ford Escape, Toyota RAV4, Honda CR-V, Nissan Xterra
Key Features
Unique Selling Points:
Rugged styling, available 4x4 system (Command-Trac, Selec-Trac), strong off-road capability for its class
Target Audience:
Enthusiasts seeking an affordable, capable compact SUV with off-road prowess and utility
📋 Manual Details
Coverage Areas
Primary Coverage:
Service and Repair
Page Count
Estimated Pages:
1500-2000
Manual Type
Type:
Factory Service Manual (WSM)
Language
Language:
English
Format
Format:
Digital Download (likely PDF)
📖 Manual Coverage
Systems Covered
Engine Mechanical:
Engine disassembly, assembly, diagnosis, troubleshooting, performance tuning, cooling system, lubrication system
Engine Electrical:
Ignition system, fuel injection system, starting and charging system, sensors, actuators, ECM/PCM diagnosis
Transmission Manual:
Service, repair, and diagnosis of manual transmissions
Transmission Automatic:
Service, repair, and diagnosis of automatic transmissions (if applicable)
Drivetrain:
Front axle, rear axle, transfer case, driveshafts, U-joints, CV joints, wheel bearings
Suspension:
Front and rear suspension components, diagnosis, alignment, shock absorbers, springs, control arms
Steering:
Power steering system, steering column, steering gear/rack and pinion, diagnosis
Brakes:
Hydraulic system, ABS, disc brakes (front/rear), parking brake, diagnosis, component replacement
Exhaust:
Exhaust system components, catalytic converter, mufflers, diagnosis
Fuel:
Fuel tank, fuel pump, fuel lines, fuel injectors, evaporative emission control (EVAP)
HVAC:
Heating, ventilation, and air conditioning system diagnosis, component replacement, refrigerant handling
Electrical System:
Body electrical systems, lighting, interior/exterior lamps, switches, relays, fuses, battery, wiring diagrams
Body And Chassis:
Body panels, doors, hinges, locks, glass, interior trim, structural components, corrosion protection
Diagnostics:
OBD-II diagnostic trouble codes (DTCs), diagnostic procedures, scan tool usage
Procedures Included
Routine Maintenance:
Oil changes, filter replacements, fluid checks, tire rotations, spark plug replacement
Troubleshooting:
Systematic fault finding for various vehicle issues
Repair Procedures:
Detailed step-by-step instructions for component removal, installation, and repair
Component Replacement:
Replacement of wear items, engine parts, transmission components, body parts, etc.
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems
Diagnostic Flowcharts:
Visual guides for diagnosing specific problems
Technical Depth
Depth:
In-depth, professional-level repair and diagnostic information
Coverage Scope:
Covers all major mechanical, electrical, and body systems for comprehensive repairs
📊 Manual Specifications
File Format
File Type:
PDF
Print Quality
Printability:
Printable pages for physical use in a workshop environment
Binding Type
Binding:
N/A (Digital)
Paper Type
Paper:
N/A (Digital)
⚙️ Engine Specifications
Primary Engine
Engine Code And Description:
3.7L (3701cc) V6 SOHC (PowerTech) - EKG
Engine Block Material:
Cast Iron
Cylinder Head Material:
Aluminum
Performance
Horsepower:
210 hp @ 5200 rpm
Torque:
235 lb-ft @ 4000 rpm
Fuel System
Fuel Delivery:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline
Engine Mechanical
Bore X Stroke:
3.70 x 3.37 in (94.0 x 85.5 mm)
Compression Ratio:
9.6:1
Maintenance
Spark Plug Type:
Champion RE10MCC4 or equivalent
Oil Capacity With Filter:
5.0 quarts (4.7 liters)
Recommended Oil Viscosity:
SAE 5W-30
🔧 Transmission
Standard
Transmission Type:
4-speed Automatic (42RLE)
Optional
Transmission Type Manual:
5-speed Manual (NV150)
Features
Automatic Transmission Fluid:
Mopar ATF+4 (or equivalent)
Manual Transmission Fluid:
Mopar Manual Transmission Lubricant (or equivalent SAE 75W-90 GL-5)
Drivetrain
Transfer Case Options:
Command-Trac NV131 (Part-time 2-speed), Selec-Trac NV242 (Full-time 2-speed)
📐 Dimensions
Exterior
Wheelbase:
104.4 inches (2652 mm)
Length:
173.5 inches (4407 mm)
Width:
72.6 inches (1844 mm)
Height:
72.4 inches (1839 mm)
Ground Clearance:
8.7 inches (221 mm)
Weights
Curb Weight Approx:
3,800 - 4,200 lbs (1724 - 1905 kg)
Towing Capacity Max:
3500 lbs (1588 kg)
Payload Capacity Max:
850 lbs (386 kg)
🛡️ Safety Features
Ratings
NHTSA Front Driver Side Impact:
★★★★★ (5-star)
NHTSA Front Passenger Side Impact:
★★★★★ (5-star)
IIHS Moderate Overlap Frontal Offset:
Good
IIHS Side Impact:
Good
Active Features
ABS:
Standard (4-wheel disc with ABS)
Traction Control:
Optional (Traction Control System - TCS)
Electronic Stability:
Optional (Electronic Stability Program - ESP)
Passive Features
Airbags:
Standard driver and front passenger airbags
Seatbelts:
3-point seat belts with pretensioners
💡 Technology Features
Infotainment
Audio System:
Factory AM/FM/CD player with optional Infinity speaker system. Auxiliary inputs may vary by trim.
Navigation:
Rarely equipped; aftermarket units were more common.
Driver Assistance
Cruise Control:
Standard on most trims.
Connectivity
Onboard Diagnostics:
OBD-II compliant system for emissions and vehicle diagnostics.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 3,000-7,500 miles (5,000-12,000 km) or 6 months, depending on driving conditions and oil type used (refer to manual for specifics).
Air Filter Replacement:
Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on inspection.
Cabin Air Filter:
Every 15,000-20,000 miles (24,000-32,000 km).
Coolant Flush Interval:
Every 30,000-60,000 miles (48,000-96,000 km) or 2-5 years.
Fluid Specifications
Engine Coolant:
Mopar Antifreeze/Coolant (HOAT) 5-Year/100,000 Mile Formula or equivalent.
Power Steering Fluid:
Mopar Power Steering Fluid or equivalent (refer to manual for specific type if different from ATF+4).
Brake Fluid:
DOT 3 (or DOT 4 if specified for ABS).
Known Issues
Common Problems V6:
Intake manifold gaskets can leak, camshaft position sensors may fail, occasional PCV valve issues.
Common Problems Transmission:
42RLE automatic transmission can exhibit harsh shifting or solenoid issues; 4WD system engagement can be a concern.
Common Problems Suspension:
Ball joint wear, sway bar link noise, control arm bushings.
Common Problems Electrical:
Window regulator failures, power lock actuator issues, HVAC blower motor resistor problems.
📚 Vehicle History
Brand Heritage
Jeep Legacy:
Jeep has a long-standing reputation for ruggedness, off-road capability, and utility dating back to WWII.
Model Evolution
Kj Generation:
First Generation Liberty (KJ), produced from 2002 to 2007. This model replaced the Cherokee (XJ) in Jeep's lineup in North America.
Design Language:
Emphasized a more rounded, modern styling compared to its boxy predecessor, while retaining Jeep's signature seven-slot grille and round headlights.
Production
Manufacturing Plant:
Toledo North Complex, Toledo, Ohio, USA
🏆 Awards & Recognition
Recognitions
Segment Awards:
While not a frequent recipient of major mainstream awards, it was often praised for its off-road capability relative to its price point and class.
Ratings
Consumer Reports Reliability:
Reliability ratings historically varied, with some model years and components showing better performance than others. The manual would detail common failure points and fixes.