🏷️ Basic Information

Make:

Subaru

Model:

Impreza WRX STI

Model Generation:

GD/GG (Second Generation)

Covered Years:

2001, 2002

Chassis Codes:

GDB (Sedan), GGB (Wagon)

👋 Introduction

Positioning:

The Subaru Impreza WRX STI of this era was a dominant force in the performance compact car segment, known for its rally-bred heritage, all-wheel-drive system, and turbocharged power. It competed with vehicles like the Mitsubishi Lancer Evolution and Ford Focus RS.

Rivals:

Mitsubishi Lancer Evolution (VII), Ford Focus RS, Audi S3, Volkswagen Golf R32.

Performance Highlights:

Symmetrical All-Wheel Drive, DCCD, potent turbocharged boxer engine, close-ratio gearbox, advanced suspension.

Purpose:

To provide Subaru technicians and dedicated enthusiasts with the authoritative information needed for accurate diagnosis, repair, and maintenance of the 2001-2002 Impreza WRX STI.

📋 Manual Details

Primary Markets:

Global (though specific regional variations may exist, this manual covers core WRX STI specifications)

Vehicle Variants:

All WRX STI variants for 2001-2002, including sedan and wagon body styles.

Estimated Page Count:

Approximately 1500-2000 pages (typical for comprehensive workshop manuals of this era).

Type:

Workshop Service Repair Manual (WSRM)

Language:

English

Format:

Digital (Instant Download - typically PDF)

📖 Manual Coverage

Powertrain:

Engine (EJ207), turbocharged system, intercooler, exhaust, fuel system, engine control unit (ECU) diagnostics, cooling system, lubrication system.

Drivetrain:

Manual transmission (TY757 V-limited 6-speed), all-wheel drive system (DCCD - Driver's Control Center Differential), front and rear differentials, driveshafts, axles.

Suspension And Steering:

Front and rear suspension (MacPherson strut front, multi-link rear), springs, shock absorbers, control arms, anti-roll bars, power steering system, steering rack.

Brakes:

Front and rear disc brakes (performance-oriented Brembo calipers for STI), ABS system, brake lines, master cylinder, parking brake.

Electrical System:

Battery, alternator, starter motor, ignition system, lighting (headlights, taillights, interior), wiring diagrams for all circuits, fuses, relays, body control modules.

Body And Chassis:

Body panels, doors, windows, interior trim, seats, body structural integrity, frame repair, corrosion protection.

HVAC:

Heating, ventilation, and air conditioning system diagnosis and repair.

Maintenance:

Scheduled maintenance (oil changes, filter replacements, spark plugs), fluid checks and changes, belt inspections and replacements, general servicing.

Repair:

Engine rebuild procedures, transmission overhaul, suspension component replacement, brake caliper servicing, turbocharger repair, electrical component replacement.

Troubleshooting:

Diagnostic flowcharts for various symptoms, error code interpretations (OBD-II), common failure analysis.

Diagnostics:

Detailed diagnostic procedures for all major systems, including use of Subaru Select Monitor (SSM) or equivalent diagnostic tools.

Specifications:

Torque specifications for all fasteners, engine clearances, timing belt tensioning, wheel alignment parameters.

Depth:

Comprehensive: Covers everything from basic routine maintenance and fluid checks to complete engine and transmission rebuilds, detailed electrical troubleshooting, and body repair.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely text-searchable PDF, allowing for quick location of specific topics.

Quality:

High resolution, suitable for printing individual pages or the entire manual.

Binding:

N/A (Digital download)

Paper:

N/A (Digital download)

⚙️ Engine Specifications

Engine Code:

EJ207

Engine Type:

2.0L (1994cc) Boxer-4, DOHC, 16-valve, turbocharged

Horsepower:

Typically rated around 265-280 PS (approx. 261-276 hp) depending on market and specific tune.

Torque:

Approximately 343-353 Nm (approx. 253-260 lb-ft) depending on market and specific tune.

Fuel Delivery:

Electronic Multi-Point Fuel Injection (MPI) with Denso or Bosch injectors.

Turbocharger:

IHI VF30 or similar twin-scroll turbocharger.

Coolant Type:

Subaru Super Coolant or equivalent P-OAT coolant (blue).

Oil Type:

Synthetic SAE 10W-30 or 15W-50 recommended (check manual for exact specifications).

ECU:

Engine Control Unit (ECU) with integrated diagnostics.

🔧 Transmission

Type:

6-speed Manual Transmission (TY757 V-limited).

Type:

Not applicable for WRX STI models of this generation.

Dccd:

Driver's Control Center Differential (DCCD) with manual and automatic modes for torque distribution adjustment.

Gear Ratios:

Specific ratios for each of the 6 gears and final drive are detailed in the manual.

Transmission Fluid:

Manual transmission fluid (MTF) API GL-4 or GL-5, specific viscosity usually 75W-90 (check manual for exact Subaru recommendation).

Differential Fluid:

API GL-5, 75W-90 for front and rear differentials (check manual).

📐 Dimensions

Length:

Approximately 4415 mm (Sedan) / 4410 mm (Wagon)

Width:

Approximately 1770 mm

Height:

Approximately 1440 mm (Sedan) / 1475 mm (Wagon)

Wheelbase:

Approximately 2525 mm

Curb Weight:

Approximately 1430 kg (Sedan) / 1450 kg (Wagon)

Gross Vehicle Weight:

Refer to vehicle placard or manual for exact GVM.

🛡️ Safety Features

NHTSA Ratings:

While specific crash test data for 2001-2002 WRX STI may vary by region, Subaru generally prioritized safety. Refer to regional authorities for definitive ratings.

ABS:

Anti-lock Braking System (ABS) standard.

AWD:

Symmetrical All-Wheel Drive with DCCD provides enhanced traction and stability.

Airbags:

Driver and front passenger airbags; side airbags may be optional or standard depending on market.

Seatbelts:

3-point height-adjustable front seat belts with pre-tensioners and load limiters, rear 3-point seat belts.

Body Structure:

Reinforced safety cell construction.

💡 Technology Features

Head Unit:

Typically a factory or dealer-installed Clarion or Panasonic audio system, often with CD player. Aftermarket upgrades common.

Speakers:

Standard speaker configuration, often with tweeters. Audio quality varied by trim and market.

Cruise Control:

Standard electronic cruise control.

Instrument Cluster:

Performance-oriented instrument cluster with large tachometer, digital odometer, and ancillary gauges (boost gauge often integrated or available).

Phone Integration:

No integrated Bluetooth or smartphone connectivity from the factory. Requires aftermarket solutions.

System:

Manual or automatic climate control depending on trim level and market.

🔧 Maintenance

Oil Change Interval:

Typically 5,000-7,500 miles or 6 months (refer to manual for exact interval and severe duty conditions).

Air Filter Replacement:

Check every 15,000 miles, replace as needed; typically around 30,000 miles.

Spark Plug Replacement:

Approximately 60,000 miles (NGK Iridium recommended for WRX STI).

Timing Belt:

Crucial component. Check manual for replacement interval, typically around 60,000-90,000 miles or 5-7 years for EJ207 engine. Includes idler pulleys and tensioner.

Engine Oil Capacity:

Approximately 4.5 Liters (4.8 US Quarts) with filter change for EJ207.

Coolant Capacity:

Approximately 7.0 Liters (7.4 US Quarts) for the cooling system.

Brake Fluid Type:

DOT 3 or DOT 4 (check manual for specification, high-performance driving may benefit from DOT 4).

Engine Common:

Ringland failure (especially in high-stress applications), turbocharger seal failure, oil consumption, head gasket leaks (though less common on EJ207 than some other EJ variants).

Drivetrain Common:

Clutch wear, DCCD system issues (sensors, actuators), differential wear under extreme use.

Suspension Common:

Wear in bushings and ball joints, potential for premature strut failure under hard driving.

📚 Vehicle History

Subaru Motorsport:

Subaru's deep roots in the World Rally Championship (WRC) are directly reflected in the Impreza WRX STI, inheriting technology and performance tuning from its rally counterparts.

Generation Introduction:

The second generation (GD/GG) Impreza, including the WRX STI, launched in 2000 (Japan) and 2001 (global markets), representing a significant redesign with a distinct 'bug-eye' front fascia for early models.

Manufacturing Location:

Ota, Gunma Prefecture, Japan.

Production Years For Gen:

2000-2007 (GD/GG generation).

🏆 Awards & Recognition

Performance Accolades:

Consistently recognized by automotive publications for its performance, handling, and rally-inspired capabilities. Praised for its AWD system and driver engagement.

Handling Reviews:

Highly rated for sharp steering, balanced chassis, and grip, making it a favorite among enthusiasts and in motorsport.

Emissions Standards:

Designed to meet emissions standards of its target markets for 2001-2002 (e.g., Euro 3, Tier 1).