🏷️ Basic Information Identification Make: Jeep Model: TJ Wrangler Year: 2003 Codes Chassis Code: TJ 👋 Introduction Market Position Segment: Compact SUV / Off-Road Vehicle Target Audience: Off-road enthusiasts, Jeep owners seeking to perform their own maintenance and repairs. Competitive Analysis Competitors 2003: Toyota Tacoma Pre-Runner (4x4 variants), Ford Bronco (discontinued but similar legacy), Suzuki Vitara, Land Rover Defender (limited availability). Key Features Vehicle Highlights: Iconic Jeep styling, legendary off-road capability, solid front and rear axles, coil spring suspension, highly customizable platform. Manual Value Proposition: Provides factory-level accuracy for repairs, empowering owners to maintain their TJ's legendary performance and longevity. 📋 Manual Details Coverage Areas Primary Coverage: 2003 Jeep TJ Wrangler Secondary Coverage: Applicable to most TJ Wrangler models from 1997-2006 with similar configurations. Page Count Estimated Page Count: 1500-2000+ (typical for comprehensive factory service manuals of this era) Manual Type Type: Factory Service Manual / Workshop Manual / Repair Manual Language Language: English Format Format: Print (likely comb-bound or perfect-bound for durability) 📖 Manual Coverage Systems Covered Powertrain: Engine (mechanical, lubrication, cooling, fuel, ignition, exhaust), Transmission (manual & automatic), Transfer Case, Drivetrain (axles, driveshafts, differentials). Chassis: Suspension (front & rear solid axles, springs, shocks, control arms), Steering (power steering system, steering gear, linkage), Brakes (hydraulic system, ABS, parking brake). Electrical: Wiring diagrams, charging system, starting system, lighting, instrument cluster, body control modules, powertrain control modules, comfort & convenience systems (HVAC, power windows/locks). Body: Exterior body panels, interior trim, doors, windows, seats, convertible top mechanism, frame structure. Procedures Included Maintenance: Routine maintenance (oil changes, filter replacements, fluid checks/changes), lubrication points, tune-up procedures. Repair Rebuild: Major engine and transmission rebuilds, clutch replacement, axle overhaul, brake caliper/rotor replacement, suspension component replacement, steering gear repair. Diagnostics: Troubleshooting guides based on symptoms, diagnostic trouble codes (DTCs), electrical system diagnostics, component testing. Installation: Component installation and removal procedures, sometimes including accessory installation. Technical Depth Depth: Comprehensive (covers basic maintenance to complete engine and transmission overhauls, detailed electrical schematics and troubleshooting). 📊 Manual Specifications File Format Digital Format: N/A (provided as a print manual) Print Quality Quality: High-quality factory printing, intended for workshop use. Binding Type Binding: Likely comb-bound or perfect-bound for lay-flat usability. Paper Type Paper: Durable, often coated paper to withstand grease and workshop environments. ⚙️ Engine Specifications Primary Engine Engine Type 1: 2.4L DOHC Inline-4 (PowerTech) Engine Code 1: 2.4L (G32) Displacement 1: 2429 cc (148.2 cu in) Horsepower 1: 147 hp @ 5200 rpm Torque 1: 165 lb-ft @ 3800 rpm Bore X Stroke 1: 87.5 mm x 100 mm (3.44 in x 3.94 in) Compression Ratio 1: 9.5:1 Optional Engine Engine Type 2: 4.0L OHV Inline-6 (High Output) Engine Code 2: 4.0L (242) Displacement 2: 3956 cc (241.4 cu in) Horsepower 2: 190 hp @ 5200 rpm Torque 2: 235 lb-ft @ 3200 rpm Bore X Stroke 2: 98.4 mm x 86.6 mm (3.87 in x 3.41 in) Compression Ratio 2: 8.8:1 Fuel System Type: Sequential Multi-Port Fuel Injection (MPI) Fuel Type: Unleaded gasoline Fuel Pressure: Refer to specific charts in manual (typically 31-37 PSI for 4.0L). 🔧 Transmission Standard Transmission Type 1: NV3550 5-Speed Manual (with 2.4L and 4.0L engines) Optional Transmission Type 2: 42RLE 4-Speed Automatic (with 4.0L engine) Features Transfer Case: NV241OR 'Rock-Trac' (standard on Rubicon models, optional command-trac on others) with 4:1 low range ratio. NV135 (4-cylinder models). Clutch Type: Hydraulic actuation for manual transmission. 📐 Dimensions Exterior Wheelbase: 93.4 inches (2372 mm) Length: 155.4 inches (3947 mm) Width: 66.7 inches (1694 mm) Height: 71.0 inches (1803 mm) (with hardtop) Ground Clearance: Approx. 10.5 inches (267 mm) Weights Curb Weight Min: Approx. 3150 lbs (1429 kg) (2.4L 2WD) Curb Weight Max: Approx. 3500 lbs (1588 kg) (4.0L 4WD Rubicon) Towing Capacity: 2000 lbs (907 kg) Payload Capacity: Approx. 800-1000 lbs (363-454 kg) 🛡️ Safety Features Ratings NHTSA Frontal Impact Driver: Not explicitly rated for this model year by NHTSA in easily accessible public records; likely considered good for its class and era, but rollover risk is inherent to SUVs. IIHS Ratings: Varied; often 'Acceptable' or 'Good' for frontal offset, but rollovers can be a concern for tall vehicles. Active Features ABS: Available (standard on some trims, optional on others) Traction Control: Limited or unavailable for this model year; primarily relies on driver skill and drivetrain. Passive Features Airbags: Driver and passenger front airbags. Seatbelts: Three-point front seatbelts, lap belts in rear. Rollover Protection: Integral sport bar (roll cage) as standard feature. 💡 Technology Features Infotainment Audio System: AM/FM stereo with CD player, optional Infinity speaker system. Navigation: Not factory-offered for this model year. Driver Assistance Cruise Control: Available on most models. Connectivity Bluetooth: Not factory-offered for this model year. Climate Control HVAC Type: Manual climate control, optional air conditioning. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, depending on driving...