Market Position:
The Jeep Cherokee (XJ) is a highly regarded compact SUV known for its off-road capability, ruggedness, and enduring popularity. The 2002 model represents a late iteration of the XJ platform, offering a blend of established reliability with modern conveniences. This manual caters to owners and mechanics who maintain and repair these vehicles, a segment that values robust performance and DIY accessibility.
Competitive Analysis:
The XJ Cherokee competed against vehicles like the Toyota 4Runner, Ford Explorer, and Nissan Pathfinder, often outperforming them in true off-road scenarios due to its unibody construction and robust drivetrain options. This manual provides the essential technical data needed to keep these competitive advantages intact.
Key Features:
Comprehensive coverage of the final model year of the legendary XJ Cherokee. Detailed diagnostic procedures and wiring diagrams are critical for this era's electronics. Emphasis on the renowned 4.0L inline-six engine and capable Selec-Trac/Command-Trac transfer cases.
Systems Covered:
Engine (4.0L I6), Powertrain Control Module (PCM), Fuel System, Ignition System, Cooling System, Exhaust System, Lubrication System, Starting System, Charging System, Manual Transmission (AX-15, NV3550), Automatic Transmission (42RE, 44RE), Transfer Case (NP231, NP242), Drivetrain (Front/Rear Axles, CV Joints, Driveshafts), Suspension (Front/Rear Leaf Spring, Coil Spring, Track Bar), Steering System, Brake System (Front Disc/Rear Drum, ABS), Electrical System (Wiring Diagrams, Component Location, Fuses, Relays), Body Control Modules (BCM), HVAC System, Body and Frame, Interior Components, Exterior Components, Wheels and Tires, Diagnostic Procedures, Troubleshooting.
Chassis And Body:
Detailed information on frame inspection, body panel removal and installation, door hardware, glass, weatherstripping, bumpers, and interior trim components.
Wheels And Tires:
Specifications for wheel torque, tire pressure, lug nut torque, and wheel alignment procedures.
HVAC System:
Covers operation, diagnosis, and repair of the air conditioning (A/C) system, heater core, blower motor, and climate controls.
Procedures Included:
Routine Maintenance, Scheduled Maintenance, Engine Overhaul/Rebuild, Transmission Repair/Rebuild, Differential Service, Brake Pad/Rotor Replacement, Suspension Component Replacement, Steering Component Replacement, Electrical Component Diagnosis and Repair, Wiring Harness Repair, HVAC System Servicing, Body Panel Repair, Diagnostic Trouble Code (DTC) P-code and B-code interpretation, Component Testing, Fluid Capacities and Specifications, Torque Specifications, Alignment Procedures.
Diagnostic Troubleshooting Charts:
Includes structured diagnostic flowcharts and symptom-based troubleshooting guides for various systems.
Torque Specifications List:
Comprehensive listing of torque values for all critical fasteners throughout the vehicle.
Technical Depth:
Comprehensive, ranging from basic fluid changes and filter replacements to complete engine and transmission rebuilds, advanced electrical diagnostics, and bodywork. Includes detailed specifications, diagrams, and step-by-step instructions suitable for professional technicians and experienced DIY enthusiasts.
Wiring Diagrams:
Complete electrical schematics for all vehicle systems, including power distribution, lighting, engine controls, body electronics, and accessories, with component locators.
Primary Engine:
4.0L (3957cc) OHV 12-Valve V6 (PowerTech)
Horsepower:
Approx. 190-195 hp @ 4600 rpm (varies slightly by year/application)
Torque:
Approx. 225-235 lb-ft @ 3200 rpm (varies slightly by year/application)
Fuel System:
Sequential Multi-Port Fuel Injection (MPI) - Multi-Point Fuel Injection
Fuel Type:
Unleaded Gasoline
Bore Stroke:
3.875 in x 3.563 in (98.4 mm x 90.5 mm)
Engine Management:
Chrysler PIII (or similar integrated PCM) with OBD-II diagnostics.
Ignition System:
Distributorless Ignition System (DIS) with Crankshaft Position Sensor (CPS) and Coil Packs.
Engine Code:
4.0L Inline 6-Cylinder (ID: 4.0L)
Standard Transmission:
NV3550 5-Speed Manual Transmission
Optional Transmission:
42RE 4-Speed Automatic Transmission
Transmission Features:
The 42RE automatic features Chrysler's TorqueFlite heritage with electronic overdrive. The NV3550 manual is known for its robustness and suitability for off-road use.
Automatic Transmission Fluid:
ATF+4 (Mopar)
Manual Transmission Fluid:
Typically a GL-3 or GL-4 75W-90 gear oil for the NV3550.
Transfer Case Options:
New Process (NP) 231 Selec-Trac (Part-Time 4WD with 2WD option), New Process (NP) 242 Selec-Trac (Full-Time 4WD with 2WD option).
Wheelbase:
101.4 inches (2576 mm)
Length:
167.5 inches (4255 mm)
Width:
70.4 inches (1788 mm)
Height:
63.7 inches (1618 mm)
Ground Clearance:
Approx. 8.7 inches (221 mm) in stock configuration.
Curb Weight:
Approximately 3300-3600 lbs (1497-1633 kg) depending on configuration.
Gross Vehicle Weight Rating:
Approximately 4700-4800 lbs (2132-2177 kg).
Cargo Volume Behind Rear Seat:
Approx. 33.5 cu ft (948 L)
Cargo Volume With Rear Seat Folded:
Approx. 70.1 cu ft (1985 L)
NHTSA Front Impact Driver:
4 Stars (for earlier XJ models, specific 2002 rating may vary but generally consistent with the platform).
NHTSA Front Impact Passenger:
4 Stars (for earlier XJ models, specific 2002 rating may vary but generally consistent with the platform).
Iiihs Front Offset Crash Rating:
Acceptable (for earlier XJ models, general platform assessment).
Active Safety Features:
Optional ABS (Anti-lock Braking System) on rear wheels, sometimes front. Power-assisted brakes.
Passive Safety Features:
Front airbags, three-point seat belts, interior energy-absorbing steering column, side guard door beams.
Infotainment System:
Basic AM/FM radio with CD player or cassette player. Optional premium sound systems were available. Digital climate control was an option on higher trims.
Speaker Configurations:
Typically 4-6 speakers depending on trim level (e.g., 2 in dash, 2 in doors, 2 in rear soundbar).
Driver Assistance Features:
Limited by modern standards. Primarily focused on the mechanical aspects of the vehicle. ABS was an option.
Connectivity Features:
No advanced connectivity features like Bluetooth or USB. Basic power outlets for accessories.
Diagnostic Port:
OBD-II (On-Board Diagnostics II) port, typically located under the dashboard, enabling scan tool connection for diagnostic trouble codes (DTCs).
Oil Change Interval:
Every 3,000-5,000 miles (4,800-8,000 km) or 6 months, whichever comes first, using synthetic blend or full synthetic oil. Refer to manual for specific type and viscosity.
Transmission Fluid Change Interval:
Automatic: 30,000-50,000 miles (48,000-80,000 km). Manual: Check for leaks, change as needed or at higher mileage intervals (e.g., 60,000-100,000 miles).
Coolant Change Interval:
Every 30,000-50,000 miles (48,000-80,000 km) or 2-3 years. Use Mopar OAT coolant or equivalent.
Spark Plug Replacement Interval:
Approximately 60,000-100,000 miles (96,000-160,000 km) depending on plug type (e.g., copper vs. platinum/iridium).
Engine Oil Specification:
SAE 10W-30 (recommended for most conditions), SAE 5W-30 for extreme cold. API classification SJ or SL.
Coolant Specification:
Mopar OAT (Orange) Antifreeze/Coolant, or equivalent HOAT (Hybrid Organic Additive Technology) coolant meeting Chrysler MS-9769/MS-12106.
Brake Fluid Specification:
DOT 3 or DOT 4.
Power Steering Fluid:
ATF+4 or Mopar Power Steering Fluid.
Transfer Case Fluid:
For NP231/NP242: Mopar NV200 (or equivalent API GL-4, SAE 75W-90 gear oil). Check manual for exact specification.
Front And Rear Axle Fluid:
API GL-5, SAE 80W-90 gear oil. Limited-slip differentials require a friction modifier additive.
Common Issues:
Headliner sagging, minor oil leaks (valve cover, oil pan), rear main seal leaks, sway bar links wear, potential for rear axle seal leaks, transfer case chain stretch, early ('91-'95) 4.0L head casting cracks (less common on later models), heater core leaks, exhaust manifold cracks (especially on earlier 4.0L engines).
Maintenance Focus:
Proactive maintenance of cooling system, regular fluid changes, and attention to any oil or coolant leaks are crucial for longevity. The 4.0L inline-six is generally very robust if maintained properly.
Common Wear Items:
Ball joints, tie rod ends, track bar bushings, U-joints, leaf spring bushings, shocks/struts.
Brand Heritage:
Jeep, a division of Chrysler (now Stellantis), has a storied history rooted in its military origins, evolving into a leader in off-road and SUV vehicles. The Jeep brand is synonymous with adventure and capability.
Model Evolution:
The Jeep Cherokee (XJ) revolutionized the SUV market by introducing unibody construction in 1984, making it lighter and more car-like than its truck-based predecessors. It offered excellent off-road prowess and a compact, maneuverable size. The 2002 model is part of the final generation of the XJ, which ran from 1984 to 2001 (with North American production ending in 2001, though some markets continued slightly longer, making the 2002 designation potentially for export markets or a specific niche classification). This manual covers the culmination of the XJ's development.
Key Updates For 2002 Model Year:
While the XJ platform was aging, the 2002 model benefited from refinements made throughout its production run. This included improved safety features and engine management systems compared to early iterations.
Production Period:
1984-2001 (North America), extended production in some markets.
Manufacturing Locations:
Primarily Toledo, Ohio, USA.