🏷️ Basic Information Identification Make: Citroën Model: C4 Year: 2005 Engine Code: 9HX Engine Variant: 1.6 16V HDi Codes Engine Prefix: 9HX 👋 Introduction Market Position Vehicle Segment: Compact Family Car (C-segment) Target Audience: Families and individuals seeking a practical, stylish, and economical vehicle Competitive Analysis Key Competitors: Volkswagen Golf, Ford Focus, Opel Astra, Renault Mégane, Peugeot 307 Key Features Design Philosophy: Avant-garde design, comfort-oriented ride, advanced technology for its time Manual Value Proposition: Enables cost-effective maintenance and repair, empowers owners to understand their vehicle 📋 Manual Details Coverage Areas Primary Coverage: CITROEN C4 1.6 16V HDi Engine Type 9HX 2005 Additional Coverage: All Models/Engines/Trim/Transmissions Types for the specified model year and engine Page Count Estimated Page Count: Extensive (typically 1000+ pages for a complete factory service manual) Manual Type Type: Factory Service Repair Manual / Workshop Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnostics, repair, specifications Fuel System: Injection system, fuel pump, injectors, throttle body, diagnostics Cooling System: Radiator, water pump, thermostat, coolant flow, fan operation Lubrication System: Oil pump, oil filter, oil passages, lubrication specifications Chassis: Suspension, steering, brakes, wheel alignment Electrical System: Battery, charging system, starting system, lighting, accessories Emission Control: Emission control systems, diagnostic procedures Wiring Diagrams: Comprehensive electrical wiring schematics Procedures Included Maintenance: Periodic maintenance schedule, fluid changes, filter replacement Repair: Detailed step-by-step repair procedures for all major components Troubleshooting: Diagnostic procedures for common and uncommon faults Disassembly Assembly: Complete disassembly and reassembly instructions Technical Depth Depth: Factory-level technical detail, suitable for both DIY and professional mechanics Diagrams Illustrations: High-quality diagrams, exploded views, and illustrations 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Printable without any restriction Binding Type Binding: Digital Download (PDF) Paper Type Paper Type: Not Applicable (Digital) Requirements Software Requirement: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Code: 9HX Engine Type: Inline 4-cylinder Turbocharged Diesel Displacement: 1560 cc (1.6 Liters) Valvetrain: DOHC, 16 Valves Fuel Type: Diesel Performance Horsepower Ps: ~109 PS @ 4000 rpm (typical for this engine variant) Torque Nm: ~240 Nm @ 1750 rpm (typical for this engine variant) Fuel System Injection System: Common Rail Direct Injection (CRDi) Turbocharger: Yes, with Intercooler Emissions Standard: Euro 4 compliant (typical) 🔧 Transmission Standard Type: 5-speed Manual Transmission (ML5C or similar) Optional Type: Likely a 4-speed Automatic Transmission available on some trims Features Manual Gear Ratios: Detailed in manual (specific ratios for each gear) Clutch Type: Hydraulic, dry single plate 📐 Dimensions Exterior Body Style: Hatchback (3-door and 5-door variants) Length Mm: Approx. 4260 mm (5-door) Width Mm: Approx. 1748 mm Height Mm: Approx. 1460 mm Weights Curb Weight Kg: Approx. 1300-1350 kg (depending on trim and equipment) Gross Vehicle Weight Kg: Approx. 1800-1850 kg 🛡️ Safety Features Ratings Euro Ncap Rating: 5 Stars (for the 2005 model year, with specific optional equipment) Active Features ABS: Standard Esp Esc: Optional on some trims Brake Assist: Likely included with ABS Passive Features Airbags: Front, Side, Curtain airbags standard or optional depending on trim Seatbelts: Pre-tensioners and force limiters on front seats 💡 Technology Features Infotainment Audio System: Factory fitted CD/Radio system Display: Central digital display for car settings and audio information Driver Assistance Cruise Control: Optional on some trims Connectivity Bluetooth: Optional hands-free kit on higher trims 🔧 Maintenance Service Intervals Oil Change Interval Km: Typically 20,000 km or 1 year (refer to manual for specific oil type) Air Filter Replacement Km: Typically 40,000-60,000 km or as needed Fuel Filter Replacement Km: Typically 60,000-80,000 km for diesel engines Fluid Specifications Engine Oil Grade: Refer to manual (e.g., PSA B71 2290 specifications, often synthetic 0W-30 or 5W-30) Engine Oil Capacity Liters: Approx. 3.75 - 4.0 Liters (including filter) Coolant Type: Antifreeze/Coolant, typically PSA standard (e.g., blue or pink colored long-life coolant) Brake Fluid Type: DOT 4 Known Issues Diesel Particulate Filter: Potential clogging or sensor issues in older diesel models Egr Valve: Can become clogged with carbon deposits Glow Plugs: Wear items that can affect cold starting Suspension Components: Wear in bushings, ball joints, and shock absorbers over time 📚 Vehicle History Brand Heritage Manufacturer: Citroën (PSA Peugeot Citroën group) Model Evolution Generation: First Generation Citroën C4 Introduction Year: 2004 Production Production Location: Various PSA plants, notably France and Spain 🏆 Awards & Recognition Recognitions Design Award: Won the prestigious 'Most Beautiful Car of the Year' award at the Geneva Motor Show in 2004.