🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2009 Codes Chassis Code: GE/GH/GR/GV Engine Codes Covered: H4SO (Naturally Aspirated), H4DOTC (Turbocharged) 👋 Introduction Market Position Segment: Compact/Small Family Car, Rally-bred performance heritage Competitive Analysis Key Competitors: Honda Civic, Mazda3, Volkswagen Golf, Mitsubishi Lancer, Ford Focus Key Features All Wheel Drive: Symmetrical All-Wheel Drive (standard on most trims), a signature Subaru feature offering enhanced traction and stability. Horizontally Opposed Engine: Boxer engine layout (H4), providing a lower center of gravity for improved handling. Performance Variants: Availability of performance-oriented models like the WRX and STI (though this specific manual might focus on standard Impreza variants, it covers the core engineering principles). 📋 Manual Details Coverage Areas Major Systems Covered: Engine (Naturally Aspirated & Turbocharged), Transmission, Chassis, Body, Electrical Systems, Wiring Diagrams Page Count Total Pages: 3619 Manual Type Type: Workshop Repair Manual / Service Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, block, crankshaft, pistons, connecting rods, valve train, timing, lubrication, cooling Engine Performance: Fuel injection, ignition system, emissions control, turbocharger systems (H4DOTC), engine control unit (ECU) diagnostics Transmission Manual: Clutch, gearbox overhaul, shifting mechanisms, internal components Transmission Automatic: Automatic transmission overhaul, valve body, torque converter, electronic controls Drivetrain: All-Wheel Drive (AWD) system, differentials (front and rear), driveshafts, hubs, bearings Suspension Steering: Front and rear suspension components, shock absorbers, springs, control arms, sway bars, steering gear, power steering system Brakes: Brake system components (discs, pads, calipers, lines, master cylinder), ABS, EBD, parking brake Electrical Lighting: Exterior lighting, interior lighting, battery, charging system, starter motor, fuses, relays Body Interior: Body panel removal and installation, doors, hood, trunk, interior trim, seats, HVAC system Safety Restraint: Airbag system, seatbelts, SRS components Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems Procedures Included Maintenance: Routine maintenance tasks, fluid changes, filter replacements, spark plug replacement Troubleshooting: Diagnostic procedures for common and complex issues, symptom-based troubleshooting guides Repair Rebuild: Detailed step-by-step instructions for component removal, repair, and reassembly, including major component overhauls Diagnostics: OBD-II system diagnostics, trouble code interpretation, sensor testing, ECU function tests Torque Specifications: Precise torque values for all critical fasteners Alignment Calibration: Wheel alignment procedures, steering angle sensor calibration Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics and electrical troubleshooting. 📊 Manual Specifications File Format File Format Type: PDF Searchable Text: Likely searchable due to PDF format, enabling quick access to information Compatibility: Compatible with all versions of Windows & Mac Requirements: Adobe PDF Reader Print Quality Printability: Designed to be printable, allowing for physical use in a workshop environment Binding Type Binding: N/A (Digital PDF format) Paper Type Paper Type: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Naturally Aspirated Engine: 2.5L EJ25 (H4SO) Boxer Engine Turbocharged Engine: 2.5L EJ255/EJ257 Turbocharged Boxer Engine (H4DOTC) found in WRX models Performance Naturally Aspirated Horsepower: Approx. 170-175 HP (depending on specific trim/market) Naturally Aspirated Torque: Approx. 170-175 lb-ft Turbocharged Horsepower: Approx. 265 HP (WRX), 305 HP (STI) - *Manual likely covers the core EJ25 architecture for both.* Turbocharged Torque: Approx. 244 lb-ft (WRX), 290 lb-ft (STI) - *Manual likely covers the core EJ25 architecture for both.* Fuel System Injection Type: Sequential multi-point fuel injection (MPI) Fuel Requirement: Premium Unleaded Gasoline (91 octane or higher recommended for turbocharged models) Cooling System Cooling Type: Pressurized liquid cooling system 🔧 Transmission Standard Transmission Type: 5-speed Manual Transmission (Part-time AWD for some base models, Full-time AWD for others) Optional Transmission Type Optional: 4-speed Automatic Transmission (with Sportshift paddle shifters on some trims) Features AWD System: Symmetrical All-Wheel Drive (standard on most trims) Gear Ratios: Specific gear ratios for manual and automatic transmissions are detailed within the manual. 📐 Dimensions Exterior Length: Approx. 173.8 inches (sedan), 173.0 inches (hatchback) Width: Approx. 69.1 inches Height: Approx. 57.7 inches (sedan), 57.1 inches (hatchback) Wheelbase: Approx. 103.2 inches Cargo Cargo Volume Sedan: Approx. 11.4 cubic feet Cargo Volume Hatchback: Approx. 19.0 cubic feet (seats up) Weights Curb Weight: Approx. 3,100 - 3,300 lbs (depending on trim and transmission) 🛡️ Safety Features Ratings NHTSA Overall Rating: Generally received good safety ratings, often 4 or 5 stars in various categories from NHTSA. IIHS Rating: Often performed well in IIHS crash tests, with Top Safety Pick designations in some years/configurations. Active Features ABS: Anti-lock Braking System (ABS) Ebd: Electronic Brake-force Distribution (EBD) Traction Control: Traction Control System (TCS) Stability Control: Vehicle Stability Control (VSC) Passive Features Airbags: Front, side-curtain, and optional front-seat side airbags Seatbelts: 3-point seatbelts with pretensioners and load limiters Child Anchors: LATCH (Lower Anchors and Tethers for Children) system 💡 Technology Features Infotainment Audio System: Standard 4-speaker or optional 6-speaker/premium audio system. Available CD player, MP3 compatibility, and auxiliary audio input. Higher trims may feature navigation. Driver Assistance Cruise Control: Standard...