🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Model Generation: GD/GG (Second Generation) Covered Years: 2001, 2002 Codes Chassis Codes: GDB (Sedan), GGB (Wagon) 👋 Introduction Market Position 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. Competitive Analysis Rivals: Mitsubishi Lancer Evolution (VII), Ford Focus RS, Audi S3, Volkswagen Golf R32. Key Features Performance Highlights: Symmetrical All-Wheel Drive, DCCD, potent turbocharged boxer engine, close-ratio gearbox, advanced suspension. Manual Purpose 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 Coverage Areas 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. Page Count Estimated Page Count: Approximately 1500-2000 pages (typical for comprehensive workshop manuals of this era). Manual Type Type: Workshop Service Repair Manual (WSRM) Language Language: English Format Format: Digital (Instant Download - typically PDF) 📖 Manual Coverage Systems Covered 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. Procedures Included 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. Technical Depth 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 Format File Type: PDF Searchability: Likely text-searchable PDF, allowing for quick location of specific topics. Print Quality Quality: High resolution, suitable for printing individual pages or the entire manual. Binding Type Binding: N/A (Digital download) Paper Type Paper: N/A (Digital download) ⚙️ Engine Specifications Primary Engine Engine Code: EJ207 Engine Type: 2.0L (1994cc) Boxer-4, DOHC, 16-valve, turbocharged Performance 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 System Fuel Delivery: Electronic Multi-Point Fuel Injection (MPI) with Denso or Bosch injectors. Turbocharger: IHI VF30 or similar twin-scroll turbocharger. Cooling System Coolant Type: Subaru Super Coolant or equivalent P-OAT coolant (blue). Lubrication Oil Type: Synthetic SAE 10W-30 or 15W-50 recommended (check manual for exact specifications). Engine Management ECU: Engine Control Unit (ECU) with integrated diagnostics. 🔧 Transmission Standard Type: 6-speed Manual Transmission (TY757 V-limited). Optional Type: Not applicable for WRX STI models of this generation. Features Dccd: Driver's Control Center Differential (DCCD) with manual and automatic modes for torque distribution adjustment. Gear Ratios Gear Ratios: Specific ratios for each of the 6 gears and final drive are detailed in the manual. Fluid Specifications 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 Exterior Length: Approximately 4415 mm (Sedan) / 4410 mm (Wagon) Width: Approximately 1770 mm Height: Approximately 1440 mm (Sedan) / 1475 mm (Wagon) Wheelbase: Approximately 2525 mm Weights Curb Weight: Approximately 1430 kg (Sedan) / 1450 kg (Wagon) Gross Vehicle Weight: Refer to vehicle placard or manual for exact GVM. 🛡️ Safety Features Ratings 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. Active Features ABS: Anti-lock Braking System (ABS) standard. AWD: Symmetrical All-Wheel Drive with DCCD provides enhanced traction and stability. Passive Features Airbags: Driver and front passenger airbags; side airbags may be optional or standard depending on...