SUBARU IMPREZA 2002 2004 WRX STi SUBARU IMPREZA 2001 2002 2003 2004 2005 2006 2007 Service Repair Workshop Manual (PDF)

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🏷️ Basic Information Identification Make: Subaru Model: Impreza Codes Chassis Codes: GDB-A, GDB-B (WRX STi); GD (standard Impreza) Generation Generation: Second Generation (GD/GG) 👋 Introduction Market Position Market Position: Performance-oriented compact car with a strong rally heritage, competing with vehicles like the Mitsubishi Lancer Evolution. Competitive Analysis Competitive Analysis: The Subaru Impreza WRX STi of this generation is renowned for its symmetrical All-Wheel Drive system, turbocharged Boxer engine, and sharp handling, offering a compelling alternative to other sport compacts of its era. Key Features Key Features: Subaru's signature turbocharged Boxer engine, symmetrical AWD, performance-tuned suspension, robust build quality, rally-inspired design elements. 📋 Manual Details Coverage Areas Vehicle Years: 2001, 2002, 2003, 2004, 2005, 2006, 2007 Trim Levels: WRX, WRX STi, Standard Impreza models Page Count Page Count: Extensive (Exact count not specified, but typical for a full workshop manual) Manual Type Manual Type: Service Repair Workshop Manual Language Language: English Format Format: PDF (potentially HTML/PDF hybrid) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, disassembly, assembly, timing belt, cylinder head, pistons, crankshaft, lubrication system, cooling system, oil pressure, oil capacity, oil filter specifications. Engine Performance: Engine diagnostics, fuel injection system (MPI, direct injection where applicable), ignition system, emission control systems, turbocharger operation and maintenance. Transmission Manual: Clutch system, manual transmission overhaul, gear shifting mechanisms, differential removal and installation, transmission fluid type and capacity, torque specifications for transmission components. Transmission Automatic: Automatic transmission operation, diagnostic trouble codes (DTCs), fluid type and capacity, valve body inspection, torque converter service, electronic control unit (ECU) interface. Drivetrain: All-Wheel Drive (AWD) system, center differential, viscous coupling unit, driveshafts, CV joints, wheel bearings, hub assemblies, axle seals, repair procedures for drivetrain components. Suspension Front: MacPherson strut assembly, control arms, ball joints, sway bar links, bushings, spring replacement, shock absorber service, alignment specifications, strut mount replacement. Brakes: Hydraulic brake system, ABS (Anti-lock Braking System) components, brake caliper overhaul, brake pad replacement, rotor machining and replacement, brake fluid type and bleeding procedures, parking brake mechanism, master cylinder service, rear drum brake service (if applicable). Steering: Power steering system, hydraulic pump, steering rack, tie rod ends, power steering fluid type and capacity, steering column components, steering angle sensor diagnostics. Electrical System: Battery service, starter motor, alternator, ignition system wiring, fuse box locations, relay functions, lighting system wiring diagrams, headlight aim adjustment, power window operation, power door lock mechanisms. Climate Control: HVAC (Heating, Ventilation, and Air Conditioning) system, refrigerant R-134a, AC compressor service, evaporator and condenser inspection, blower motor replacement, cabin air filter replacement, heater core service, climate control panel diagnostics. Body Exterior: Body panel removal and installation, door mechanisms, hood and trunk latches, bumper repair and replacement, exterior trim components, glass and mirror replacement, sunroof operation and repair, wiper system service. Body Interior: Interior trim panel removal and installation, seat removal and installation, seatbelt system inspection and repair, dashboard components, instrument cluster removal and repair, airbag system service and safety precautions. Security Immobilizer: Immobilizer system operation, key programming, security module diagnostics, central locking system troubleshooting. Suspension Rear Suspension Rear: Multi-link rear suspension design, trailing arms, control links, bushings, shock absorbers, coil springs, rear wheel bearing replacement, rear suspension component torque specifications. Procedures Included Preventive Maintenance: Oil change intervals, filter replacement, fluid level checks, tire rotation, brake inspection, coolant flush, spark plug replacement, belt inspection and replacement. Troubleshooting: Diagnostic trouble codes (DTCs) interpretation, symptom-based troubleshooting guides, electrical circuit diagnostics, mechanical component testing. Repair Procedures: Step-by-step instructions for component removal, installation, adjustment, and calibration for all major vehicle systems. Diagnostics: On-board diagnostics (OBD-II) procedures, scan tool usage, sensor testing, actuator testing, ECU communication protocols. Technical Depth Technical Depth: Comprehensive from basic maintenance to advanced engine and transmission rebuilds, including electrical schematics and diagnostic procedures. 📊 Manual Specifications File Format File Format: Adobe Acrobat PDF Searchable Text: Likely searchable if digitally compiled and indexed. Print Quality Print Quality: Digital PDF format allows for high-resolution printing of all diagrams and text. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: EJ207 (WRX STi), EJ255/EJ257 (later WRX STi models, specific to markets) Engine Configuration: Horizontally-opposed (Boxer), 4-cylinder, turbocharged, intercooled Displacement: 2.0L (EJ207), 2.5L (EJ257) Horsepower Wrx Sti: Approx. 270-300 hp (varies by market and year) Torque Wrx Sti: Approx. 270-300 lb-ft (varies by market and year) Fuel System Fuel System: Multi-point fuel injection (MPI), Electronic throttle control Performance Turbocharger: IHI VF series (e.g., VF30, VF34 for STi) Intercooler: Top-mounted air-to-air intercooler 🔧 Transmission Standard Transmission Type Sti: 6-speed manual transmission Transmission Type Wrx: 5-speed manual transmission (standard on WRX), optional 4-speed automatic (less common) Features AWD System: Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) on STi models Clutch: Hydraulically actuated, multi-plate wet clutch system (STi) 📐 Dimensions Exterior Length: Approx. 4,405-4,415 mm (173.4-173.8 in) Width: Approx. 1,740-1,745 mm (68.5-68.7...

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Sku: 194508

Collections: ALL Subaru

Availability: In stock

Tags: 2001 2002 2003 2004 2005 2006 2007 Car Cars IMPREZA STi Subaru WRX

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza

Codes

Chassis Codes:

GDB-A, GDB-B (WRX STi); GD (standard Impreza)

Generation

Generation:

Second Generation (GD/GG)

👋 Introduction

Market Position

Market Position:

Performance-oriented compact car with a strong rally heritage, competing with vehicles like the Mitsubishi Lancer Evolution.

Competitive Analysis

Competitive Analysis:

The Subaru Impreza WRX STi of this generation is renowned for its symmetrical All-Wheel Drive system, turbocharged Boxer engine, and sharp handling, offering a compelling alternative to other sport compacts of its era.

Key Features

Key Features:

Subaru's signature turbocharged Boxer engine, symmetrical AWD, performance-tuned suspension, robust build quality, rally-inspired design elements.

📋 Manual Details

Coverage Areas

Vehicle Years:

2001, 2002, 2003, 2004, 2005, 2006, 2007

Trim Levels:

WRX, WRX STi, Standard Impreza models

Page Count

Page Count:

Extensive (Exact count not specified, but typical for a full workshop manual)

Manual Type

Manual Type:

Service Repair Workshop Manual

Language

Language:

English

Format

Format:

PDF (potentially HTML/PDF hybrid)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine overhaul, disassembly, assembly, timing belt, cylinder head, pistons, crankshaft, lubrication system, cooling system, oil pressure, oil capacity, oil filter specifications.

Engine Performance:

Engine diagnostics, fuel injection system (MPI, direct injection where applicable), ignition system, emission control systems, turbocharger operation and maintenance.

Transmission Manual:

Clutch system, manual transmission overhaul, gear shifting mechanisms, differential removal and installation, transmission fluid type and capacity, torque specifications for transmission components.

Transmission Automatic:

Automatic transmission operation, diagnostic trouble codes (DTCs), fluid type and capacity, valve body inspection, torque converter service, electronic control unit (ECU) interface.

Drivetrain:

All-Wheel Drive (AWD) system, center differential, viscous coupling unit, driveshafts, CV joints, wheel bearings, hub assemblies, axle seals, repair procedures for drivetrain components.

Suspension Front:

MacPherson strut assembly, control arms, ball joints, sway bar links, bushings, spring replacement, shock absorber service, alignment specifications, strut mount replacement.

Brakes:

Hydraulic brake system, ABS (Anti-lock Braking System) components, brake caliper overhaul, brake pad replacement, rotor machining and replacement, brake fluid type and bleeding procedures, parking brake mechanism, master cylinder service, rear drum brake service (if applicable).

Steering:

Power steering system, hydraulic pump, steering rack, tie rod ends, power steering fluid type and capacity, steering column components, steering angle sensor diagnostics.

Electrical System:

Battery service, starter motor, alternator, ignition system wiring, fuse box locations, relay functions, lighting system wiring diagrams, headlight aim adjustment, power window operation, power door lock mechanisms.

Climate Control:

HVAC (Heating, Ventilation, and Air Conditioning) system, refrigerant R-134a, AC compressor service, evaporator and condenser inspection, blower motor replacement, cabin air filter replacement, heater core service, climate control panel diagnostics.

Body Exterior:

Body panel removal and installation, door mechanisms, hood and trunk latches, bumper repair and replacement, exterior trim components, glass and mirror replacement, sunroof operation and repair, wiper system service.

Body Interior:

Interior trim panel removal and installation, seat removal and installation, seatbelt system inspection and repair, dashboard components, instrument cluster removal and repair, airbag system service and safety precautions.

Security Immobilizer:

Immobilizer system operation, key programming, security module diagnostics, central locking system troubleshooting.

Suspension Rear

Suspension Rear:

Multi-link rear suspension design, trailing arms, control links, bushings, shock absorbers, coil springs, rear wheel bearing replacement, rear suspension component torque specifications.

Procedures Included

Preventive Maintenance:

Oil change intervals, filter replacement, fluid level checks, tire rotation, brake inspection, coolant flush, spark plug replacement, belt inspection and replacement.

Troubleshooting:

Diagnostic trouble codes (DTCs) interpretation, symptom-based troubleshooting guides, electrical circuit diagnostics, mechanical component testing.

Repair Procedures:

Step-by-step instructions for component removal, installation, adjustment, and calibration for all major vehicle systems.

Diagnostics:

On-board diagnostics (OBD-II) procedures, scan tool usage, sensor testing, actuator testing, ECU communication protocols.

Technical Depth

Technical Depth:

Comprehensive from basic maintenance to advanced engine and transmission rebuilds, including electrical schematics and diagnostic procedures.

📊 Manual Specifications

File Format

File Format:

Adobe Acrobat PDF

Searchable Text:

Likely searchable if digitally compiled and indexed.

Print Quality

Print Quality:

Digital PDF format allows for high-resolution printing of all diagrams and text.

Binding Type

Binding Type:

N/A (Digital PDF)

Paper Type

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Type:

EJ207 (WRX STi), EJ255/EJ257 (later WRX STi models, specific to markets)

Engine Configuration:

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

Displacement:

2.0L (EJ207), 2.5L (EJ257)

Horsepower Wrx Sti:

Approx. 270-300 hp (varies by market and year)

Torque Wrx Sti:

Approx. 270-300 lb-ft (varies by market and year)

Fuel System

Fuel System:

Multi-point fuel injection (MPI), Electronic throttle control

Performance

Turbocharger:

IHI VF series (e.g., VF30, VF34 for STi)

Intercooler:

Top-mounted air-to-air intercooler

🔧 Transmission

Standard

Transmission Type Sti:

6-speed manual transmission

Transmission Type Wrx:

5-speed manual transmission (standard on WRX), optional 4-speed automatic (less common)

Features

AWD System:

Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) on STi models

Clutch:

Hydraulically actuated, multi-plate wet clutch system (STi)

📐 Dimensions

Exterior

Length:

Approx. 4,405-4,415 mm (173.4-173.8 in)

Width:

Approx. 1,740-1,745 mm (68.5-68.7 in)

Height:

Approx. 1,410-1,445 mm (55.5-56.9 in)

Weights

Curb Weight:

Approx. 1,420-1,500 kg (3,130-3,307 lbs) depending on trim and options

🛡️ Safety Features

Ratings

Crash Test Ratings:

Varies by specific test and year, typically performed well in frontal and side impact tests by NHTSA and IIHS during its production run. Check specific year's ratings for precise data.

Passive Features

Airbags:

Frontal airbags, front side-impact airbags

Seatbelts:

3-point front and rear seatbelts, pre-tensioners

Active Features

4-wheel Anti-lock Braking System (ABS)

Traction Control:

Active Traction Control (ASR) often standard or available.

💡 Technology Features

Infotainment

Infotainment System:

Basic factory radio systems with CD player, tape deck (early models), and optional navigation. Limited connectivity by modern standards.

Driver Assistance

Driver Assistance:

Primarily focused on mechanical performance, with basic ABS and traction control. No advanced driver-assistance systems (ADAS) like adaptive cruise control or lane-keeping assist.

Connectivity

Connectivity:

Limited to basic audio input options. No Bluetooth, USB, or smartphone integration from the factory.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,750 to 7,500 miles (6,000 to 12,000 km) or 6-12 months, depending on driving conditions and oil type. Refer to manual for exact specification.

Timing Belt Replacement:

Typically every 105,000 miles (168,000 km) or 7 years for EJ20/EJ25 engines. Crucial to follow this interval.

Fluid Specifications

Engine Oil:

5W-30 or 10W-30 synthetic oil (API certified), capacity approx. 4.5-5.5 quarts (4.3-5.2 liters) with filter. Refer to manual for precise recommendation.

Coolant:

Subaru Super Coolant (Blue) or equivalent, 50/50 mix with distilled water. Capacity approx. 7.5-8.0 quarts (7.1-7.6 liters).

Transmission Fluid Manual:

GL-5 gear oil, SAE 75W-90. Capacity approx. 2.4 quarts (2.3 liters).

Transmission Fluid Automatic:

Subaru ATF-HP or equivalent. Capacity approx. 3.6 quarts (3.4 liters).

Differential Fluid Front:

GL-5 gear oil, SAE 75W-90. Capacity approx. 1.0 quart (0.9 liters).

Differential Fluid Rear:

GL-5 gear oil, SAE 75W-90. Capacity approx. 1.0 quart (0.9 liters).

Power Steering Fluid:

Subaru Type 1 Power Steering Fluid or equivalent. Capacity approx. 1.0 quart (0.9 liters).

Brake Fluid:

DOT 3 or DOT 4 brake fluid.

Known Issues

Head Gasket Failures:

While less prevalent than in earlier Subaru generations, some EJ25 engines can experience head gasket failures. Regular coolant level checks are important.

Piston Ring Land Failure:

Some EJ207 and EJ257 engines are susceptible to piston ring land failure under extreme abuse or poor tuning, especially if modified. This manual's diagnostics are crucial.

Clutch Wear:

Performance driving can lead to accelerated clutch wear, especially on STi models. The manual details clutch inspection and replacement.

Turbocharger Issues:

Turbocharger bearings can fail due to lack of lubrication or contamination. Regular oil changes with quality oil are vital.

📚 Vehicle History

Brand Heritage

Brand Heritage:

Subaru has a long history of producing capable all-wheel-drive vehicles, with a particularly strong connection to rally racing through the Impreza's success in the World Rally Championship (WRC).

Model Evolution

Model Evolution:

The second-generation Impreza (GD/GG) introduced a more aerodynamic and rounded design compared to its predecessor. The WRX STi variant represented the pinnacle of its performance, featuring enhanced engine tuning, a more robust drivetrain, and superior braking systems.

Production

Production Period:

2000-2007 (Second Generation)

🏆 Awards & Recognition

Recognitions

Recognitions:

The Impreza WRX STi has consistently received accolades for its performance, handling, and rally-bred capabilities. Recognized by automotive publications for its driving dynamics.