๐ท๏ธ Basic Information Identification Make: Subaru Model: Impreza Year: 2002 Chassis Code: GDB (for WRX/STI variants) Codes Generation Code: GD (Second Generation) ๐ Introduction Market Position Segment: Compact/Small Family Car, known for its rally heritage and all-wheel-drive capability. Target Audience: Enthusiasts, DIY mechanics, and professional technicians seeking in-depth repair information. Competitive Analysis Competitors: Honda Civic, Toyota Corolla, Mitsubishi Lancer, Ford Focus. Key Features Driving Dynamics: Renowned for its balanced handling, grip (especially with AWD), and often turbocharged performance variants (WRX). AWD System: Subarusymmetrical All-Wheel Drive is a defining characteristic, enhancing traction and stability. Performance Variants: Availability of the performance-oriented WRX and STI models, offering significant engine upgrades and sportier tuning. ๐ Manual Details Coverage Areas Coverage: Comprehensive service, repair, and maintenance for the 2002 Subaru Impreza. Page Count Page Count: Estimated 2000+ pages (typical for a full factory service manual). Manual Type Manual Type: Factory Service Manual (FSM) Language Language: English Format Format: Instant Download (Digital, likely PDF) ๐ Manual Coverage Systems Covered Engine: Detailed diagnostics, repair procedures, specifications, and component overviews for all engine variants. Transmission: Coverage for both manual and automatic transmissions, including overhaul, diagnostics, and fluid service. Drivetrain: Includes Subarusymmetrical All-Wheel Drive (AWD) system, differentials, axles, and driveshafts. Suspension: Front and rear suspension systems, including struts, control arms, bushings, alignment specifications, and service. Brakes: Hydraulic brake system, ABS components, brake caliper service, rotor replacement, fluid specifications, and bleeding procedures. Steering: Power steering system, steering rack, pump, linkage, and column service. Electrical: Comprehensive wiring diagrams, component testing, charging system, ignition system, starting system, and ECU diagnostics. HVAC: Air conditioning system, heater, blower motor, climate controls, and refrigerant service. Body And Chassis: Exterior body panels, interior trim, doors, windows, sunroof, structural components, and collision repair information. Fuel System: Fuel pump, injectors, lines, tank, and evaporative emissions control (EVAP) system. Cooling System: Radiator, thermostat, water pump, hoses, and coolant specifications. Procedures Included Scheduled Maintenance: Detailed maintenance schedules for oil changes, filter replacements, fluid checks, and other routine services. Troubleshooting: Diagnostic charts, symptom-based troubleshooting, and fault code explanations. Repair Procedures: Step-by-step instructions for component removal, installation, and repair for all major systems. Diagnostics: OBD-II diagnostic information, sensor testing, actuator testing, and ECU relearn procedures. Torque Specifications: Precise torque values for critical fasteners across all vehicle systems. Special Tools: Identification and usage of specialized tools required for specific repairs and diagnostics. Technical Depth Depth: Complete overhaul and rebuilding procedures for major components like engines and transmissions. Diagnostics Level: Advanced diagnostic procedures, including oscilloscopes and logic analyzers for electrical system troubleshooting. ๐ Manual Specifications File Format File Format: Digital (likely PDF), optimized for instant download and viewing. Print Quality Print Quality: High-resolution, clear text and diagrams suitable for printing. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) โ๏ธ Engine Specifications Primary Engine Engine Code Base: EJ251 (2.5L Naturally Aspirated) Displacement Na: 2.5 Liters (2457 cc) Configuration Na: Horizontally-opposed (Boxer) 4-cylinder Horsepower Na: Approx. 165-170 hp @ 5600 rpm Torque Na: Approx. 166 lb-ft @ 4000 rpm Performance Engine Engine Code Wrx: EJ205 (2.0L Turbocharged) Displacement Wrx: 2.0 Liters (1994 cc) Configuration Wrx: Horizontally-opposed (Boxer) 4-cylinder, turbocharged Horsepower Wrx: Approx. 227 hp @ 5600 rpm Torque Wrx: Approx. 217 lb-ft @ 3200 rpm Fuel System Fuel Delivery: Multi-point fuel injection (MPI) Fuel Type: Unleaded gasoline Ignition System: Distributorless Ignition System (DIS) with coil-on-plug (COP) for WRX models. ๐ง Transmission Standard Manual Transmission: 5-speed manual transmission (TY754/TY755 series) Optional Automatic Transmission: 4-speed automatic transmission (4EAT) Features AWD Coupling: Viscous coupling center differential for AWD models. Differentials: Open front and rear differentials (or Limited Slip Differential (LSD) on some performance variants). Fluid Specs Manual Trans Fluid: Subaru Extra-S Gear Oil (or equivalent API GL-5, SAE 75W-90) Automatic Trans Fluid: Subaru ATF-HP (or equivalent Dexron III/Mercon) ๐ Dimensions Exterior Length: Approx. 173.7 inches (4410 mm) Width: Approx. 66.7 inches (1695 mm) Height: Approx. 56.1 inches (1425 mm) for Sedan / 57.1 inches (1450 mm) for Wagon Wheelbase Wheelbase: Approx. 99.9 inches (2535 mm) Weights Curb Weight: Approx. 3000-3200 lbs (1360-1450 kg), varies by trim and drivetrain. Gross Vehicle Weight: Approx. 4200-4400 lbs (1905-2000 kg), varies by trim. Cargo Cargo Volume Sedan: Approx. 12.1 cu ft (343 L) Cargo Volume Wagon: Approx. 30.0 cu ft (850 L) with rear seats up ๐ก๏ธ Safety Features Ratings NHTSA Front Impact Driver: 5 Stars NHTSA Front Impact Passenger: 5 Stars NHTSA Side Impact Front Passenger: 4 Stars NHTSA Side Impact Rear Passenger: 4 Stars Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Available Traction Control System (TCS) on some models. Passive Features Airbags Front: Driver and front passenger airbags. Airbags Side: Optional front side-impact airbags on select trims. Seatbelts: 3-point height-adjustable front seat belts with pretensioners, 3-point rear seat belts. ๐ก Technology Features Infotainment Audio System: Standard AM/FM stereo with CD player. Higher...
Distributorless Ignition System (DIS) with coil-on-plug (COP) for WRX models.
๐ง Transmission
Standard
Manual Transmission:
5-speed manual transmission (TY754/TY755 series)
Optional
Automatic Transmission:
4-speed automatic transmission (4EAT)
Features
AWD Coupling:
Viscous coupling center differential for AWD models.
Differentials:
Open front and rear differentials (or Limited Slip Differential (LSD) on some performance variants).
Fluid Specs
Manual Trans Fluid:
Subaru Extra-S Gear Oil (or equivalent API GL-5, SAE 75W-90)
Automatic Trans Fluid:
Subaru ATF-HP (or equivalent Dexron III/Mercon)
๐ Dimensions
Exterior
Length:
Approx. 173.7 inches (4410 mm)
Width:
Approx. 66.7 inches (1695 mm)
Height:
Approx. 56.1 inches (1425 mm) for Sedan / 57.1 inches (1450 mm) for Wagon
Wheelbase
Wheelbase:
Approx. 99.9 inches (2535 mm)
Weights
Curb Weight:
Approx. 3000-3200 lbs (1360-1450 kg), varies by trim and drivetrain.
Gross Vehicle Weight:
Approx. 4200-4400 lbs (1905-2000 kg), varies by trim.
Cargo
Cargo Volume Sedan:
Approx. 12.1 cu ft (343 L)
Cargo Volume Wagon:
Approx. 30.0 cu ft (850 L) with rear seats up
๐ก๏ธ Safety Features
Ratings
NHTSA Front Impact Driver:
5 Stars
NHTSA Front Impact Passenger:
5 Stars
NHTSA Side Impact Front Passenger:
4 Stars
NHTSA Side Impact Rear Passenger:
4 Stars
Active Features
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Available Traction Control System (TCS) on some models.
Passive Features
Airbags Front:
Driver and front passenger airbags.
Airbags Side:
Optional front side-impact airbags on select trims.
Seatbelts:
3-point height-adjustable front seat belts with pretensioners, 3-point rear seat belts.
๐ก Technology Features
Infotainment
Audio System:
Standard AM/FM stereo with CD player. Higher trims may feature premium audio systems.
Display:
Basic digital clock and radio display.
Driver Assistance
Cruise Control:
Standard on most trims.
Anti Theft:
Factory immobilizer and alarm system.
Connectivity
Auxiliary Input:
Not typically available from the factory; aftermarket solutions are common.
๐ง Maintenance
Service Intervals
Oil Change Interval:
Every 3,750 miles (6,000 km) or 6 months, whichever comes first (under normal driving conditions).
Air Filter Replacement:
Every 15,000 miles (24,000 km) or 12 months.
Engine Coolant Change:
Initial change at 60,000 miles (96,000 km) or 48 months, then every 30,000 miles (48,000 km) or 24 months.
Transmission Fluid Change Auto:
Every 30,000 miles (48,000 km) or 24 months.
Spark Plug Replacement:
Every 60,000 miles (96,000 km) for platinum-tipped plugs.
Fluid Specifications
Engine Oil Spec:
SAE 5W-30, API SL or higher.
Engine Oil Capacity:
4.5 US quarts (4.3 L) with filter for 2.5L NA; 4.7 US quarts (4.4 L) with filter for 2.0L Turbo.
Coolant Spec:
Subaru Super Coolant (or equivalent ethylene glycol-based coolant with corrosion inhibitors).
Brake Fluid Spec:
DOT 3 or DOT 4.
Known Issues
Head Gaskets:
While less common on the EJ251 than previous generations, head gasket leaks can still occur, especially with aftermarket modifications or poor maintenance.
Wrx Ring Lands:
WRX models with the EJ205 engine can be susceptible to ring land failure under high boost or aggressive tuning due to weaker piston design.
Clutch Wear:
Manual transmission clutches can wear out faster than average with aggressive driving or frequent towing.
Cv Axle Boots:
Cracked or torn CV axle boots can lead to premature failure of the CV joints, particularly in areas with poor road conditions or salt.
๐ Vehicle History
Brand Heritage
Subaru Heritage:
Subaru's history is rooted in aircraft manufacturing, leading to their distinctive horizontally-opposed engine and Symmetrical AWD systems, emphasizing durability and capability.
Model Evolution
Impreza Genesis:
The Subaru Impreza was first introduced in 1992 as a replacement for the Subaru Leone.
Generation 2 Introduction:
The second generation (GD chassis) debuted for the 2002 model year, featuring a completely redesigned chassis and body style, often referred to as the 'bug eye' for its distinctive headlights on early models.
Wrx Performance Heritage:
The Impreza WRX (World Rally eXperimental) variants have a strong motorsport pedigree, particularly in the World Rally Championship (WRC), influencing the design and engineering of production models.
Production
Manufacturing Location:
Primarily manufactured in Gunma, Japan.
Production Years 2Nd Gen:
2002-2007
๐ Awards & Recognition
Recognitions
Car And Driver เชคเชฟเชนเชพเชธ:
The Impreza WRX consistently appeared on Car and Driver's Ten Best list during this era for its performance value.
Ralley Championship Success:
Numerous rally championships (WRC, etc.) won by the Impreza platform contributed to its performance image and desirability.
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