2002 Jeep Grand Cherokee WJ Service Shop Manual

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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Year: 2002 Chassis Code: WJ 👋 Introduction Market Position Segment: Mid-size Luxury SUV Target Audience: Enthusiasts, DIY mechanics, professional technicians Competitive...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Grand Cherokee

Year:

Chassis Code:

👋 Introduction

Market Position

Segment:

Mid-size Luxury SUV

Target Audience:

Enthusiasts, DIY mechanics, professional technicians

Competitive Analysis

Key Competitors:

Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Land Rover Discovery

Key Features Vehicle

Distinguishing Features:

Luxurious interior appointments, refined ride, capable off-road performance (for its class)

Key Features Manual

Manual Advantage:

Most complete workshop manual available for the 2002 WJ Grand Cherokee, offering extensive coverage.

📋 Manual Details

Coverage Areas

Primary Coverage:

Body, Chassis & Electrical Systems

Diagnostic Coverage:

Troubleshooting and repair procedures for all major systems

Wiring Diagrams:

Included, detailed electrical schematics

Page Count

Estimated Pages:

1500+

Manual Type

Type:

Service Shop Manual / Workshop Manual

Language

Language:

English

Format

File Format:

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine assembly, disassembly, internal components, cooling, lubrication

Fuel System:

Fuel delivery, injection, evaporative emissions

Ignition System:

Ignition timing, coil-on-plug systems, spark plugs

Exhaust System:

Catalytic converters, mufflers, exhaust manifold

Transmission Automatic:

42RE, 45RFE, 545RFE - overhaul, diagnostics, shift control

Transmission Manual:

NV3500 (if applicable/optioned) - overhaul, diagnostics

Drivetrain 4X4:

NV242, NV247, NV244 transfer cases, front and rear drive shafts, differentials

Suspension Front:

Independent front suspension, control arms, steering knuckles, shocks, struts

Suspension Rear:

Multi-link solid axle, control arms, track bar, shocks

Steering:

Power steering system, steering gear, linkage, column

Brakes Front:

Disc brake system, calipers, rotors, pads

Brakes Rear:

Disc brake system (typically), calipers, rotors, pads

ABS Esp:

Anti-lock Braking System, Electronic Stability Program (if equipped), wheel speed sensors

Body Exterior:

Body panels, doors, hood, tailgate, bumpers, glass, seals

Body Interior:

Seats, trim panels, dashboard, headliner, HVAC controls

HVAC:

Heating, Ventilation, and Air Conditioning system, components, refrigerant handling

Electrical Charging:

Alternator, voltage regulator, battery

Electrical Lighting Exterior:

Headlights, taillights, turn signals, fog lights

Electrical Lighting Interior:

Dome lights, vanity lights, instrument cluster illumination

Electrical Accessories:

Power windows, power locks, power seats, mirrors, sunroof

Audio Visual:

Radio, speakers, amplifier (if equipped), navigation system (if equipped)

Instrument Cluster:

Gauges, warning lights, driver information center

ECM PCM:

Engine Control Module / Powertrain Control Module - diagnostics, reprogramming

Security System:

Immobilizer, factory alarm system

Procedures Included

Maintenance:

Oil changes, filter replacements, fluid checks, tire rotation

Troubleshooting:

Diagnostic flowcharts, symptom analysis, common fault diagnosis

Repair:

Component removal and installation, component overhaul, adjustments

Diagnostics:

OBD-II system, diagnostic trouble codes (DTCs), sensor testing, actuator testing

Specifications Torque:

Detailed torque specifications for all critical fasteners

Specifications Measurements:

Dimensional specifications for critical components and alignments

Wiring Repairs:

Connector pinouts, splice locations, repair procedures for damaged wiring

Technical Depth

Depth:

Comprehensive, from basic maintenance to complete engine and transmission rebuilds

Diagnostics Complexity:

Advanced diagnostic procedures requiring specialized tools and knowledge

📊 Manual Specifications

File Format

Compatibility:

Windows XP, Vista, 7, 8, Linux, Mac

Features:

Fully bookmarked and searchable PDF

Print Quality

Quality Description:

High-resolution, clear text and diagrams suitable for printing

Binding Type

Type:

Digital (PDF)

Paper Type

Digital Format:

N/A (Digital file)

⚙️ Engine Specifications

Primary Engine

Engine Option 1:

4.0L Inline 6-Cylinder (PowerTech)

Engine Code 1:

Displacement 1:

3952 cc (241 cu in)

Horsepower 1:

190 hp @ 4600 rpm

Torque 1:

235 lb-ft @ 3200 rpm

Engine Option 2

Engine Option 2:

4.7L V8 (High Output)

Engine Code 2:

EVC (HO)

Displacement 2:

4701 cc (287 cu in)

Horsepower 2:

235 hp @ 4750 rpm

Torque 2:

295 lb-ft @ 3200 rpm

Fuel System

Fuel Delivery:

Sequential Electronic Fuel Injection (SEFI)

Fuel Type:

Unleaded Gasoline

Recommended Octane:

87 (91 for HO V8 recommended for optimal performance)

🔧 Transmission

Standard

Transmission Type Standard:

4-speed automatic (42RE with 4.0L, 45RFE/545RFE with 4.7L)

Optional

Transmission Type Optional:

5-speed manual (NV3500 - less common)

Features

Overdrive Gears:

4th Gear (Overdrive) on automatics

Transmission Fluid Spec 42Re:

ATF+4 (MS-9602)

Transmission Fluid Spec 45Rfe 545Rfe:

ATF+4 (MS-9602)

📐 Dimensions

Exterior

Length:

181.4 in (4608 mm)

Width:

73.1 in (1857 mm)

Height:

70.3 in (1786 mm)

Wheelbase:

116.0 in (2946 mm)

Weights

Curb Weight Min:

4,230 lbs (1919 kg)

Curb Weight Max:

4,640 lbs (2105 kg)

Cargo

Cargo Volume Behind 2Nd Row:

37.5 cu ft (1062 L)

Cargo Volume Max:

73.6 cu ft (2084 L)

🛡️ Safety Features

Ratings

NHTSA Driver Front Impact:

Not Rated (Vehicle specific data varies by testing year and methodology for this era)

NHTSA Passenger Front Impact:

Not Rated

IIHS Driver Side Impact:

Acceptable (for models with side airbags)

Active Features

Standard

Traction Control:

Available

Electronic Stability Control:

Available (ESP)

Passive Features

Airbags Front:

Standard

Airbags Side Curtain:

Optional

💡 Technology Features

Infotainment

Audio Options:

AM/FM stereo with cassette and CD player, optional premium sound system, optional Infinity speaker system

Navigation:

Optional factory navigation system available on select trims.

Driver Assistance

Cruise Control:

Standard

Rear Obstacle Detection:

Optional (ParkSense)

Connectivity

Auxiliary Input:

Not standard; aftermarket solutions may be available.

Bluetooth:

Not available from factory.

🔧 Maintenance

Service Intervals

Oil Change Interval:

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

Engine Air Filter:

Inspect every 15,000 miles, replace as needed.

Cabin Air Filter:

Inspect every 15,000 miles, replace as needed.

Transmission Fluid Change:

Every 30,000-60,000 miles, depending on driving conditions (refer to manual).

Coolant Flush:

Every 30,000 miles or 2 years.

Fluid Specifications

Engine Oil 4.0L:

SAE 5W-30 (API Service SN or SP) - Check owner's manual for specific certifications.

Engine Oil 4.7L:

SAE 5W-30 (API Service SN or SP) - Check owner's manual for specific certifications.

Coolant:

Mopar HOAT (Hybrid Organic Acid Technology) Antifreeze/Coolant (blue color) or equivalent.

Brake Fluid:

DOT 3

Power Steering Fluid:

ATF+4 (MS-9602) or Mopar Power Steering Fluid

Known Issues

Common Issue 1:

Head Gasket Leaks (especially on 4.7L V8)

Common Issue 2:

Transmission Cooler Line Leaks

Common Issue 3:

Radiator Leaks

Common Issue 4:

Worn Suspension Components (ball joints, tie rod ends)

Common Issue 5:

Water Pump Failures (especially on 4.0L)

Common Issue 6:

PCV Valve Clogging (leading to oil leaks)

📚 Vehicle History

Brand Heritage

Brand Focus:

Jeep has a long heritage in off-road vehicles and SUVs, originating from military applications.

Model Evolution

Wj Generation Introduction:

The WJ Grand Cherokee was introduced for the 1999 model year, representing the second generation.

Wj Generation Update:

The 2002 model year received minor updates including revised interior trim and option packages.

Wj Generation Engines:

Known for offering both the robust 4.0L inline-six and the more powerful 4.7L V8 engines.

Production

Production Locations:

Detroit, Michigan, USA (Jefferson North Assembly Plant)

Production Years Wj:

1999-2004

🏆 Awards & Recognition

Recognitions

Automotive Journal Awards:

Frequently recognized for its balance of on-road comfort and off-road capability in its class during its production run.

Consumer Ratings:

Received mixed reviews from consumers, with praise for its powertrain and comfortable ride, and criticism for some reliability concerns.