The Mitsubishi Lancer Evolution IV (Evo IV), chassis code CN9A, is a high-performance sedan produced from 1996 to 1998. Built as a homologation special for World Rally Championship (WRC) racing, it embodies Mitsubishi's rich motorsport heritage. The Evo IV is distinguished by its aggressive styling, a potent 2.0L 4G63T DOHC turbocharged engine producing 280 PS, and an advanced all-wheel-drive system featuring Active Yaw Control (AYC) for exceptional handling and cornering stability. This driver-focused vehicle, known for its engineering quality and reliability when properly maintained, competed against esteemed models like the Subaru Impreza WRX STi. This comprehensive service and repair manual, presented in English, covers the Mitsubishi Lancer Evolution IV models from 1996 to 1998. It provides detailed instructions for a wide range of maintenance and repair procedures, encompassing engine mechanicals, electronic engine management, manual and AWD transmissions (including AYC system diagnosis), drivetrain, suspension, steering, brakes, and the complete electrical system. The manual also includes information on body and chassis, climate control, scheduled maintenance, troubleshooting guides, diagnostic procedures, and essential wiring diagrams, offering over 1000 pages of technical expertise to assist owners and technicians in keeping the vehicle in optimal condition. 🏷️ Basic Information Identification Make: Mitsubishi Model: Lancer Evolution IV (Evo IV) Generation Code: CN9A Codes Chassis Code: CN9A Engine Code: 4G63T (DOHC Turbocharged) 👋 Introduction Market Position Positioning: A homologation special built for rally racing, offering exceptional performance and handling in a road-legal package. Known as a driver's car. Competitive Analysis Competitors: Subaru Impreza WRX STi, Ford Escort RS Cosworth, Lancia Delta Integrale Evoluzione Key Features Performance Enhancements: Aggressive styling, powerful turbocharged engine, advanced all-wheel-drive system with Active Yaw Control (AYC), upgraded suspension and brakes 📋 Manual Details Coverage Areas Model Years Covered: 1996, 1997, 1998 Page Count Estimated Page Count: 1000+ Manual Type Type: Full Service and Repair Manual Language Language: English Format Format: Digital (likely PDF, searchable) File Format: Likely PDF, optimized for digital viewing and printing Searchability: Typically features searchable text for quick access to information Print Quality: High-resolution for clear diagrams and text Binding Type: N/A (Digital Format) Paper Type: N/A (Digital Format) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, component testing, timing belt replacement, turbocharger service, cooling system, lubrication system Engine Management Electronic: ECU diagnosis, sensor testing (MAP, TPS, IAT, Knock, O2), fuel injection system, ignition system, emissions control Transmission Manual: Clutch system, gearbox overhaul, gear shift mechanism, lubrication, flywheel replacement Transmission AWD: Active Yaw Control (AYC) system diagnosis and calibration, transfer case, center differential, rear differential Drivetrain: Driveshafts, CV joints, wheel hubs, axle components Suspension: Front and rear suspension components, shock absorbers, springs, control arms, anti-roll bars, strut tower braces Steering: Power steering system, steering rack, tie rods, steering column Brakes: Front and rear brake systems, ABS operation and diagnosis, brake fluid, caliper service, rotor replacement, brake lines Electrical System: Battery, charging system, starter, lighting, horn, wipers, power windows, mirrors, fuses, relays, wiring diagrams Body And Chassis: Body panel alignment, door mechanisms, interior trim, chassis components, rust prevention, body repair techniques Climate Control: HVAC system diagnosis, refrigerant, compressor, heater core, A/C system service Procedures Included Scheduled Maintenance: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, brake inspections, tire rotation Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides for all major systems Repair Procedures: Step-by-step instructions for engine, transmission, suspension, brake, electrical, and body component repair and replacement Diagnostics: Detailed diagnostic procedures for electronic control units (ECUs), sensors, actuators, and mechanical systems Wiring Diagrams: Comprehensive electrical wiring schematics for all vehicle systems Technical Depth Depth: Comprehensive: Covers basic maintenance to full engine and transmission rebuilds, including complex electronic diagnostics and AYC system calibration ⚙️ Engine Specifications Primary Engine Engine Type: 2.0L Inline-4 DOHC 16-valve Turbocharged (4G63T) Performance Horsepower: 280 PS (276 hp; 206 kW) at 6,500 rpm (JDM Spec) Torque: 350 Nm (258 lb-ft) at 3,000 rpm (JDM Spec) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with multi-point injection Turbocharger: Mitsubishi TD05HR-16G twin-scroll turbocharger with intercooler Cooling System Coolant Type: Ethylene Glycol based coolant (e.g., Mitsubishi DiaQueen Super Long Life Coolant, or equivalent) Lubrication System Oil Type: SAE 10W-30 or 10W-40 API SG or higher (e.g., Mitsubishi DiaQueen ECO-Action SAE 10W-30) Oil Capacity: Approx. 4.5 Liters (4.8 US Quarts) with filter Engine Management Ignition System: Distributorless ignition system (DIS) with individual ignition coils 🔧 Transmission Standard Type: 5-speed Manual Transmission (F5M51) Optional Type: N/A (Manual transmission was standard for Evo IV) Features Drivetrain: All-Wheel Drive (AWD) with Active Yaw Control (AYC) Ayc System: Hydraulically controlled differential for torque vectoring to the rear wheels Lubrication Gearbox Oil Type: API GL-4 or GL-5, SAE 75W-90 (e.g., Mitsubishi DiaQueen LSD Gear Oil 75W-90) Transfer Case Oil Type: API GL-4 or GL-5, SAE 75W-90 (e.g., Mitsubishi DiaQueen LSD Gear Oil 75W-90) Ayc Oil Type: Special AYC fluid, consult manual for specific type...