2002 SUBARU IMPREZA WRX sti Service Repair Manual

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🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Model Variant: GD chassis (Third Generation) Model Year: 2002 Codes Chassis Code: GDB 👋 Introduction Market Position Segment: Compact performance...

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza WRX STI

Model Variant:

GD chassis (Third Generation)

Model Year:

Codes

Chassis Code:

👋 Introduction

Market Position

Segment:

Compact performance sedan/hatchback

Target Audience:

Enthusiast drivers, rally sport fans, performance car owners

Competitive Analysis

Key Competitors:

Mitsubishi Lancer Evolution, Ford Focus RS, Honda Civic Type R

Key Features

Performance Focus:

Tuned for high performance and rally-inspired driving dynamics

All Wheel Drive:

Symmetrical All-Wheel Drive system with Driver Controlled Center Differential (DCCD)

Turbocharged Engine:

Powerful EJ207 Boxer engine known for its responsiveness and tuning potential

📋 Manual Details

Coverage Areas

Coverage Scope:

Comprehensive repair and service procedures

Page Count

Estimated Page Count:

1500-2000 (typical for Subaru factory service manuals)

Manual Type

Type:

Factory Service Manual (FSM) / Workshop Manual

Language

Language:

English

Format

Format:

📖 Manual Coverage

Systems Covered

Engine:

2.0L EJ207 Turbocharged Boxer Engine

Engine Management:

ECU, ignition, fuel injection, emissions control, sensors, actuators

Transmission:

6-speed manual transmission (TY757VWAAA)

Drivetrain:

All-Wheel Drive (AWD) system, center differential, front and rear differentials

Suspension:

Front (MacPherson strut, unequal length, trailing link), Rear (multi-link), sway bars, bushings

Brakes:

Front Brembo 4-piston calipers, Rear Brembo 2-piston calipers, ABS, EBD

Steering:

Hydraulic power steering system, steering column, rack and pinion

Electrical:

Battery, charging system, starting system, lighting, instrument cluster, comfort/convenience systems

Body:

Body structure, panels, doors, glass, interior trim, bumpers

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system

Safety Systems:

Airbags, seat belts, pre-tensioners

Procedures Included

Maintenance:

Routine scheduled maintenance, oil changes, filter replacements, inspections

Diagnostics:

Troubleshooting guides, DTC (Diagnostic Trouble Code) interpretation, component testing

Repair:

Component removal, installation, adjustment, overhaul

Disassembly:

Engine, transmission, drivetrain components, suspension, brakes

Reassembly:

Detailed reassembly instructions with torque specifications

Wiring Diagrams:

Complete electrical wiring schematics for all systems

Special Tools:

Identification and usage of specialized tools required for specific repairs

Technical Depth

Depth:

In-depth, dealership-level technical information

Accuracy:

Factory-verified technical data and procedures

📊 Manual Specifications

File Format

File Type:

Searchable PDF

Printability:

Printable pages

Resolution:

High-resolution images and diagrams

Binding Type

Binding:

N/A (Digital PDF format)

Paper Type

Paper:

N/A (Digital PDF format)

⚙️ Engine Specifications

Primary Engine

Engine Code:

EJ207

Configuration:

Horizontally-opposed (Boxer), 4-cylinder, turbocharged and intercooled

Displacement:

1994 cc (2.0 Liters)

Bore X Stroke:

92.0 mm x 75.0 mm

Compression Ratio:

8.0:1

Performance

Horsepower:

280 PS (276 hp) @ 6400 rpm (JDM spec, often higher in reality)

Torque:

333 Nm (246 lb-ft) @ 4400 rpm (JDM spec)

Fuel System

Fuel Delivery:

Multi-point fuel injection (MPI) with twin scroll turbocharger

Fuel Type:

Unleaded gasoline, premium octane (98 RON recommended)

Ignition System:

Electronic ignition, coil-on-plug

Engine Management

ECU Type:

Denso ECU (e.g., 22611AD710, 22611AD800 for specific markets)

🔧 Transmission

Standard

Type:

6-speed manual transmission

Model Code:

TY757VWAAA (typical for STI)

Optional

Availability:

No automatic transmission offered on STI model for 2002

Features

Dccd:

Driver Controlled Center Differential (DCCD) with automatic and manual modes

Gear Ratios:

Specific gear ratios for all 6 forward gears and reverse (detailed in manual)

Fluid Specifications

Transmission Fluid Type:

GL-5, SAE 75W-90 (Subaru Genuine Gear Oil or equivalent)

📐 Dimensions

Exterior

Length:

4415 mm (173.8 in)

Width:

1770 mm (69.7 in)

Height:

1410 mm (55.5 in)

Wheelbase:

2625 mm (103.3 in)

Front Track:

1500 mm (59.1 in)

Rear Track:

1495 mm (58.9 in)

Weights

Curb Weight:

Approximately 1470 kg (3240 lbs)

Gross Vehicle Weight Rating:

1800 kg (3968 lbs)

Wheel Tire

Wheel Size:

17 x 7.5 inches

Bolt Pattern:

5x100mm

Tire Size:

225/45R17

🛡️ Safety Features

Ratings

NHTSA Front Impact:

4 Stars (Driver), 4 Stars (Passenger) - for 2002 model year

IIHS Front Impact:

Active Features

Standard Anti-lock Braking System

Standard Electronic Brake-force Distribution

Symmetrical All-Wheel Drive with DCCD

Passive Features

Airbags:

Front dual-stage airbags, front side airbags

Seatbelts:

3-point front seatbelts with pre-tensioners and load limiters, 3-point rear seatbelts

💡 Technology Features

Infotainment

Head Unit:

Factory AM/FM/CD player with optional premium sound system

Driver Assistance

Dccd:

Driver Controlled Center Differential allowing manual adjustment of front/rear torque split

Connectivity

Prewiring:

Pre-wired for optional accessories and audio upgrades

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,750 miles or 6 months, whichever comes first (severe duty/performance driving)

Engine Air Filter:

Replace every 15,000 miles or 12 months

Cabin Air Filter:

Replace every 15,000 miles or 12 months

Spark Plugs:

Replace every 30,000 miles (iridium type)

Coolant Change:

Flush and replace every 30,000 miles or 24 months

Fluid Specifications

Engine Oil Type:

5W-30 Synthetic (API SG or higher)

Engine Oil Capacity:

4.5 Liters (4.8 US Quarts) with filter change

Coolant Type:

Subaru Super Coolant (Blue) or equivalent (50/50 mix with distilled water)

Brake Fluid Type:

DOT 3 or DOT 4

Power Steering Fluid:

Subaru Automatic Transmission Fluid (ATF-HP) or Dexron III/Mercon equivalent

Known Issues

Engine Reliability:

Head gasket failures (less common on EJ207 than EJ25, but still possible), ringland failure under high boost/poor tuning

Transmission Durability:

Gear crunching (especially 2nd and 3rd gears) with aggressive use, synchro wear

Suspension Wear:

Worn bushings, especially in the rear control arms and sway bar links

Turbocharger:

Oil starvation if not properly maintained, turbo flutter with incorrect blow-off valve setup

📚 Vehicle History

Brand Heritage

Rally Connection:

Direct lineage from Subaru's successful World Rally Championship (WRC) cars

Model Evolution

Generation Start:

Third generation (GDB) introduced for the 2002 model year

Previous Generation:

Second generation (GC/GF chassis)

Production

Assembly Location:

Gunma Manufacturing Plant, Japan

🏆 Awards & Recognition

Recognitions

Car And Driver నించ:

Car and Driver's 10Best list (for the Impreza line in general, signifying its performance credentials)