2002 Jeep Grand Cherokee WG Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Year: 2002 Chassis Code: WG (export/international market variant) Codes Engine Code 2002 Wk Wg: e.g., 4.0L Power Tech I6 (MVP), 4.7L PowerTech V8 (NHO), 2.7L CRD V6 (ENC), 3.1L TD V6 (527) - Specific code depends on region and engine 👋 Introduction Market Position Segment: Mid-size Luxury SUV Target Audience: Families, off-road enthusiasts, those seeking a capable and comfortable SUV with premium features. Competitive Analysis Key Competitors: Ford Explorer, Toyota 4Runner, Chevrolet Blazer, Nissan Pathfinder, Lexus RX, BMW X5, Mercedes-Benz ML-Class. Key Features Distinguishing Features: Jeep's legendary off-road capability (Quadra-Drive II system), comfortable interior, available powerful V8 engines, robust build quality. 📋 Manual Details Coverage Areas Global Coverage Regions: Primarily for WG (export/international market) variants, though much content may overlap with WK (North American) models. Covers all regions where the WG was sold. Page Count Estimated Page Count: Likely 2000+ pages (typical for comprehensive workshop manuals covering multiple powertrains and options) Manual Type Type: Workshop Service Repair Manual (WSRM) Language Language: English (as indicated by typical availability for download, though multi-language versions may exist) Format Format: Downloadable Digital Format (e.g., PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical (4.0L I6, 4.7L V8, 2.7L CRD V6, 3.1L TD V6), engine electrical, cooling system, fuel system, exhaust system, transmission (45RFE, 545RFE, NV3500 manual where applicable), transfer case (NV247, NV242, Quadra-Drive II), driveline, axles, driveshafts, differentials Chassis: Suspension (front and rear independent suspension), steering system, braking system (ABS, power assist), wheels and tires Electrical: Body electrical, lighting, instrumentation, HVAC controls, power accessories (windows, locks, seats), audio system, diagnostic systems (OBD-II), wiring diagrams, fuse/relay locations Body: Body and frame construction, exterior trim, interior trim, doors, windows, glass, seats, airbags, body sealing, paint Procedures Included Maintenance: Scheduled maintenance intervals, fluid level checks, filter replacements, lubrication points, tire rotation Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs) interpretation, symptom-based diagnostics, electrical system diagnostics Repair And Overhaul: Detailed step-by-step repair procedures for all major components, engine rebuild specifications, transmission overhaul, suspension component replacement, brake service, electrical component repair/replacement, body panel repair Specifications And Tolerances: Torque specifications, clearances, fluid capacities, electrical specifications, component tolerances, diagnostic specifications Technical Depth Depth: Comprehensive, covering basic to advanced repairs, diagnostics, and component overhaul. Suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format File Type: Digital Document (e.g., PDF) Print Quality Quality: High-resolution scans or digitally created content, optimized for clarity of diagrams and text. Searchable text functionality is often included in PDF versions. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Gas Engine Displacement Gas 1: 4.0 Liters (242 cu. in.) Engine Configuration Gas 1: Inline-6 (I6), Overhead Valve (OHV), 'Power Tech' I6 Engine Horsepower Gas 1: Approx. 195 hp @ 4600 rpm Engine Torque Gas 1: Approx. 230 lb-ft @ 3200 rpm Engine Displacement Gas 2: 4.7 Liters (285 cu. in.) Engine Configuration Gas 2: V8, Single Overhead Cam (SOHC), 'PowerTech' V8 Engine Horsepower Gas 2: Approx. 220 hp @ 4700 rpm Engine Torque Gas 2: Approx. 285 lb-ft @ 3400 rpm Primary Engine Diesel Engine Displacement Diesel 1: 2.7 Liters (165 cu. in.) Engine Configuration Diesel 1: Inline-5 (I5) Common Rail Diesel (CRD), 'ENC' designation Engine Horsepower Diesel 1: Approx. 161 hp @ 4000 rpm Engine Torque Diesel 1: Approx. 295 lb-ft @ 1800 rpm Engine Displacement Diesel 2: 3.1 Liters (189 cu. in.) Engine Configuration Diesel 2: V6 Turbo Diesel, '527' designation Engine Horsepower Diesel 2: Approx. 140 hp @ 4000 rpm Engine Torque Diesel 2: Approx. 295 lb-ft @ 1800 rpm Fuel System Fuel Delivery Gas: Sequential Multi-Port Fuel Injection (MPI) Fuel Delivery Diesel: Common Rail Direct Injection (CRD) for 2.7L, Direct Injection for 3.1L TD Performance 0 60 Mph 4.0L: Approx. 9.5 - 10.5 seconds 0 60 Mph 4.7L: Approx. 8.5 - 9.5 seconds 0 60 Mph 2.7L Crd: Approx. 10.5 - 11.5 seconds 🔧 Transmission Standard Transmission Auto: 4-speed automatic (45RFE/545RFE) Optional Transmission Manual: 5-speed manual (NV3500, less common on WG, primarily North American WK) Features Transfer Case Standard: Selec-Trac (NV242) or Quadra-Trac II (NV247) depending on trim/options Transfer Case Optional: Quadra-Drive II (NV247 with electronic limited-slip differentials front and rear) Fluid Specification Automatic Transmission Fluid: Mopar ATF+4 (Type 9602) or equivalent specification. 📐 Dimensions Exterior Wheelbase: 116.1 inches (2950 mm) Length: 184.6 inches (4690 mm) Width: 71.9 inches (1826 mm) Height: 67.3 inches (1709 mm) Cargo Cargo Volume Behind 2Nd Row: Approx. 39.4 cu. ft. (1116 L) Cargo Volume Max: Approx. 72.3 cu. ft. (2047 L) Weights Curb Weight 4.0L: Approx. 4200 - 4400 lbs (1905 - 2000 kg) Curb Weight 4.7L: Approx. 4400 - 4600 lbs (2000 - 2087 kg) Towing Capacity: Up to 5,000 lbs (2268 kg) with optional towing package 🛡️ Safety Features Ratings NHTSA Frontal Crash Test Driver: 4...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Grand Cherokee

Year:

Chassis Code:

WG (export/international market variant)

Codes

Engine Code 2002 Wk Wg:

e.g., 4.0L Power Tech I6 (MVP), 4.7L PowerTech V8 (NHO), 2.7L CRD V6 (ENC), 3.1L TD V6 (527) - Specific code depends on region and engine

👋 Introduction

Market Position

Segment:

Mid-size Luxury SUV

Target Audience:

Families, off-road enthusiasts, those seeking a capable and comfortable SUV with premium features.

Competitive Analysis

Key Competitors:

Ford Explorer, Toyota 4Runner, Chevrolet Blazer, Nissan Pathfinder, Lexus RX, BMW X5, Mercedes-Benz ML-Class.

Key Features

Distinguishing Features:

Jeep's legendary off-road capability (Quadra-Drive II system), comfortable interior, available powerful V8 engines, robust build quality.

📋 Manual Details

Coverage Areas

Global Coverage Regions:

Primarily for WG (export/international market) variants, though much content may overlap with WK (North American) models. Covers all regions where the WG was sold.

Page Count

Estimated Page Count:

Likely 2000+ pages (typical for comprehensive workshop manuals covering multiple powertrains and options)

Manual Type

Type:

Workshop Service Repair Manual (WSRM)

Language

Language:

English (as indicated by typical availability for download, though multi-language versions may exist)

Format

Format:

Downloadable Digital Format (e.g., PDF)

📖 Manual Coverage

Systems Covered

Powertrain:

Engine mechanical (4.0L I6, 4.7L V8, 2.7L CRD V6, 3.1L TD V6), engine electrical, cooling system, fuel system, exhaust system, transmission (45RFE, 545RFE, NV3500 manual where applicable), transfer case (NV247, NV242, Quadra-Drive II), driveline, axles, driveshafts, differentials

Chassis:

Suspension (front and rear independent suspension), steering system, braking system (ABS, power assist), wheels and tires

Electrical:

Body electrical, lighting, instrumentation, HVAC controls, power accessories (windows, locks, seats), audio system, diagnostic systems (OBD-II), wiring diagrams, fuse/relay locations

Body:

Body and frame construction, exterior trim, interior trim, doors, windows, glass, seats, airbags, body sealing, paint

Procedures Included

Maintenance:

Scheduled maintenance intervals, fluid level checks, filter replacements, lubrication points, tire rotation

Diagnostics:

Troubleshooting guides, diagnostic trouble codes (DTCs) interpretation, symptom-based diagnostics, electrical system diagnostics

Repair And Overhaul:

Detailed step-by-step repair procedures for all major components, engine rebuild specifications, transmission overhaul, suspension component replacement, brake service, electrical component repair/replacement, body panel repair

Specifications And Tolerances:

Torque specifications, clearances, fluid capacities, electrical specifications, component tolerances, diagnostic specifications

Technical Depth

Depth:

Comprehensive, covering basic to advanced repairs, diagnostics, and component overhaul. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

File Format

File Type:

Digital Document (e.g., PDF)

Print Quality

Quality:

High-resolution scans or digitally created content, optimized for clarity of diagrams and text. Searchable text functionality is often included in PDF versions.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine Gas

Engine Displacement Gas 1:

4.0 Liters (242 cu. in.)

Engine Configuration Gas 1:

Inline-6 (I6), Overhead Valve (OHV), 'Power Tech' I6

Engine Horsepower Gas 1:

Approx. 195 hp @ 4600 rpm

Engine Torque Gas 1:

Approx. 230 lb-ft @ 3200 rpm

Engine Displacement Gas 2:

4.7 Liters (285 cu. in.)

Engine Configuration Gas 2:

V8, Single Overhead Cam (SOHC), 'PowerTech' V8

Engine Horsepower Gas 2:

Approx. 220 hp @ 4700 rpm

Engine Torque Gas 2:

Approx. 285 lb-ft @ 3400 rpm

Primary Engine Diesel

Engine Displacement Diesel 1:

2.7 Liters (165 cu. in.)

Engine Configuration Diesel 1:

Inline-5 (I5) Common Rail Diesel (CRD), 'ENC' designation

Engine Horsepower Diesel 1:

Approx. 161 hp @ 4000 rpm

Engine Torque Diesel 1:

Approx. 295 lb-ft @ 1800 rpm

Engine Displacement Diesel 2:

3.1 Liters (189 cu. in.)

Engine Configuration Diesel 2:

V6 Turbo Diesel, '527' designation

Engine Horsepower Diesel 2:

Approx. 140 hp @ 4000 rpm

Engine Torque Diesel 2:

Approx. 295 lb-ft @ 1800 rpm

Fuel System

Fuel Delivery Gas:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Delivery Diesel:

Common Rail Direct Injection (CRD) for 2.7L, Direct Injection for 3.1L TD

Performance

0 60 Mph 4.0L:

Approx. 9.5 - 10.5 seconds

0 60 Mph 4.7L:

Approx. 8.5 - 9.5 seconds

0 60 Mph 2.7L Crd:

Approx. 10.5 - 11.5 seconds

🔧 Transmission

Standard

Transmission Auto:

4-speed automatic (45RFE/545RFE)

Optional

Transmission Manual:

5-speed manual (NV3500, less common on WG, primarily North American WK)

Features

Transfer Case Standard:

Selec-Trac (NV242) or Quadra-Trac II (NV247) depending on trim/options

Transfer Case Optional:

Quadra-Drive II (NV247 with electronic limited-slip differentials front and rear)

Fluid Specification

Automatic Transmission Fluid:

Mopar ATF+4 (Type 9602) or equivalent specification.

📐 Dimensions

Exterior

Wheelbase:

116.1 inches (2950 mm)

Length:

184.6 inches (4690 mm)

Width:

71.9 inches (1826 mm)

Height:

67.3 inches (1709 mm)

Cargo

Cargo Volume Behind 2Nd Row:

Approx. 39.4 cu. ft. (1116 L)

Cargo Volume Max:

Approx. 72.3 cu. ft. (2047 L)

Weights

Curb Weight 4.0L:

Approx. 4200 - 4400 lbs (1905 - 2000 kg)

Curb Weight 4.7L:

Approx. 4400 - 4600 lbs (2000 - 2087 kg)

Towing Capacity:

Up to 5,000 lbs (2268 kg) with optional towing package

🛡️ Safety Features

Ratings

NHTSA Frontal Crash Test Driver:

4 Stars (2002 model year evaluation)

NHTSA Frontal Crash Test Passenger:

4 Stars (2002 model year evaluation)

IIHS Small Overlap Frontal Offset:

Not Rated (IIHS testing for this type of test began later)

Active Features

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional (often bundled with 4WD systems or as part of Quadra-Drive II)

Electronic Stability Control:

Not commonly available on the 2002 model year. Introduced on later generations.

Passive Features

Airbags Front:

Standard front driver and passenger airbags

Airbags Side:

Optional front-seat side-impact airbags

Seatbelts:

Three-point seat belts for all seating positions

💡 Technology Features

Infotainment

Audio System Options:

Factory AM/FM/CD player, optional premium Infinity audio system with subwoofer, optional cassette player, available CD changer.

Navigation:

Optional factory navigation system available on higher trim levels.

Driver Assistance

Cruise Control:

Standard cruise control.

Parking Sensors:

Optional rear parking assist sensors.

Connectivity

Auxiliary Inputs:

No factory auxiliary audio input (3.5mm jack) on standard systems. Requires aftermarket adapter.

🔧 Maintenance

Service Intervals

Oil Change Interval Gas:

Every 3,000 - 5,000 miles (4,800 - 8,000 km) or 6 months, depending on driving conditions. Check manual for specific recommendations.

Oil Change Interval Diesel:

Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 12 months. Diesel-specific.

Engine Coolant Flush:

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

Transmission Fluid Change:

Every 30,000 - 60,000 miles (48,000 - 96,000 km) for automatic transmission. Heavy towing or off-roading may necessitate more frequent changes.

Fluid Specifications

Engine Oil 4.0L Gas:

SAE 5W-30, API Certified (e.g., MS-6395)

Engine Oil 4.7L Gas:

SAE 5W-30, API Certified (e.g., MS-6395)

Engine Oil 2.7L Crd:

SAE 0W-40 or 5W-40, API CI-4 or CH-4 rated diesel engine oil.

Coolant:

Mopar OAT (Orange) Antifreeze/Coolant or equivalent (typically a 50/50 mix with distilled water).

Transfer Case Fluid:

For NV247 (Quadra-Trac II/Quadra-Drive II): Mopar NV247 Transfer Case Lubricant or equivalent.

Known Issues

Cooling System:

Radiator leaks, thermostat housing leaks, heater core issues, and plastic intake manifold coolant crossover failures.

Engine 4.7L V8:

Valve seat recession on early models, piston slap, and potential intake manifold gasket leaks.

Transmission 45Rfe/545Rfe:

Torque converter shudder, potential solenoid issues, and overheating can lead to premature wear.

Suspension:

Worn control arm bushings, ball joints, and steering components due to weight and mileage.

Electrical:

Instrument cluster failures (common on WJ), blower motor resistor issues, and window regulator failures.

📚 Vehicle History

Brand Heritage

Jeep Legacy:

Jeep is synonymous with off-road capability and ruggedness, tracing its origins back to WWII military vehicles.

Model Evolution

Grand Cherokee Wjs Generation:

The 2002 Grand Cherokee belongs to the second generation (WJ), introduced for the 1999 model year. The WJ represented a significant refinement over the ZJ, offering a more refined ride, improved interior quality, and advanced features like the Quadra-Drive system.

Production

Manufacturing Location:

Primarily Jefferson North Assembly Plant, Detroit, Michigan, USA (for WK) and other international facilities for WG variants.

Model Year Range:

1999-2004

🏆 Awards & Recognition

Recognitions

Competitor Comparisons:

Consistently ranked well in comparison tests for its blend of luxury, capability, and V8 power.

Motor Trend SUV Of The Year:

Although the 1999 WJ generation was a finalist, it did not win SUV of the Year for 1999 (won by Ford Explorer). However, it was well-regarded.