🏷️ Basic Information Identification Make: Citroën Model: C4 Year: 2006 Engine: 2.0 i (EW10J4) Codes Platform: PSA PF2 Chassis Code: LC 👋 Introduction Market Position Segment: Compact family car (C-segment) Target Audience: European market, general consumers, fleet operators Competitive Analysis Key Competitors: Volkswagen Golf, Ford Focus, Opel Astra, Peugeot 307 Key Features Design Philosophy: Distinctive styling, emphasis on comfort and ride quality, innovative features Unique Selling Points: Semi-independent rear suspension (early models), distinctive interior design, focus on aerodynamic efficiency 📋 Manual Details Coverage Areas Coverage Scope: All models and all repairs A-Z Page Count Estimated Page Count: Over 1500 Manual Type Manual Type: Service & Repair Manual Language Language: English Format Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, cylinder head, pistons, connecting rods, crankshaft, timing system (belts/chains), lubrication system, cooling system Engine Management: Fuel injection system (EFI), ignition system, emissions control, ECU diagnostics, sensors and actuators Transmission Manual: Manual gearbox components, clutch, driveshafts, linkages, fluid changes Transmission Automatic: Automatic gearbox (if applicable, e.g., AL4) components, torque converter, valve body, electronic control, fluid changes Brakes: Hydraulic system, ABS, EBD, brake discs, pads, calipers, lines, master cylinder, vacuum booster, parking brake Suspension: Front and rear suspension components (struts, shocks, control arms, ball joints, bushings), wheel alignment specifications Steering: Power steering system (hydraulic or electric), steering rack, column, tie rods, wheel alignment Electrical System: Battery, charging system (alternator), starting system, lighting system, wiring diagrams, fuse/relay identification and testing Body And Chassis: Body panel removal/installation, doors, windows, locks, interior trim, chassis structural components, corrosion protection HVAC: Heating, Ventilation, and Air Conditioning system components, refrigerant handling, cabin filter replacement Infotainment And Electronics: Radio, navigation system (if equipped), instrument cluster, warning lights, multiplexing (CAN bus) architecture basics Procedures Included Maintenance Procedures: Scheduled maintenance tasks, oil changes, filter replacements, spark plug replacement, fluid level checks and top-ups, brake fluid flush Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting for engine, transmission, brakes, electrical systems Repair Procedures: Detailed step-by-step repair instructions for all major components and systems, including torque specifications Diagnostic Procedures: OBD-II fault code interpretation, live data stream analysis, sensor testing, actuator testing, ECU relearn procedures Component Replacement: Step-by-step guidance for replacing parts such as alternators, starters, fuel pumps, radiators, water pumps, CV joints, etc. Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems Technical Depth Depth Of Coverage: Vehicle-specific, technician-level detail Diagnostics Focus: Advanced diagnostics and troubleshooting methodologies Rebuild Information: Comprehensive information for engine and transmission overhauls 📊 Manual Specifications File Format Digital Format: PDF Print Quality Image Resolution: High resolution, suitable for printing Binding Type Binding Type: N/A (Digital) Paper Type Paper Type: N/A (Digital) Searchability Text Searchability: Searchable text content ⚙️ Engine Specifications Primary Engine Engine Code: EW10J4 (or variations) Engine Type: Inline 4-cylinder, naturally aspirated Displacement: 1997 cc Bore X Stroke: 85.0 mm x 88.0 mm Compression Ratio: 10.8:1 Valve Train: DOHC, 16 valves Performance Horsepower Hp: 138 PS (136 bhp; 101 kW) at 6000 rpm Torque Nm: 192 Nm (142 lb-ft) at 4000 rpm Fuel System Fuel Injection: Multi-point fuel injection (MPI) Fuel Type: Unleaded petrol (95 RON recommended) Emission Standard: Euro IV 🔧 Transmission Standard Standard Transmission Type: 5-speed Manual Optional Optional Transmission Type: 4-speed Automatic (AL4) Features Automatic Features: Tiptronic sequential gear selection 📐 Dimensions Exterior Length Mm: 4260 mm (Hatchback), 4431 mm (Coupe) Width Mm: 1773 mm Height Mm: 1475 mm Wheelbase Mm: 2605 mm Weights Curb Weight Kg: Approx. 1300-1350 kg (depending on configuration) 🛡️ Safety Features Ratings Euro Ncap Rating: 5 Stars (for the C4 family in general, achieved in 2005) Active Features Active Safety Systems: ABS with EBD (Electronic Brakeforce Distribution), Emergency Brake Assist (EBA), ESP (Electronic Stability Program) often optional or standard on higher trims Passive Features Passive Safety Features: Multiple airbags (front, side, curtain), three-point seatbelts with pretensioners and load limiters, ISOFIX child seat anchors, anti-whiplash front headrests 💡 Technology Features Infotainment Infotainment Systems: Radio-CD player, optional navigation system (e.g., RT3), MP3 compatibility Driver Assistance Driver Assistance Features: Cruise control, speed limiter, parking sensors (optional) Connectivity Connectivity Options: Bluetooth hands-free calling (optional), USB interface (later models or aftermarket) Interior Tech Unique Interior Features: Fixed-center steering wheel hub (initially on some models), digital instrument cluster, adjustable ambient lighting 🔧 Maintenance Service Intervals Oil Change Interval: Every 15,000 km or 1 year (whichever comes first), or 20,000 km for extended life oils (check manual) Timing Belt Replacement: Typically 120,000 km or 5 years, but critically important to verify based on engine variant and manual specific recommendations. Fluid Specifications Engine Oil Specification: API SN/CF, ACEA A3/B4 or A5/B5, SAE 5W-40, 5W-30 (refer to manual for precise grade based on climate and usage) Coolant Specification: PSA S71 2103 (Antifreeze/Coolant, Blue) Brake Fluid Specification: DOT 4 (or DOT 4 LV for vehicles with ESP) Transmission Fluid Manual: API GL-4, SAE 75W-80 Transmission Fluid Automatic: ATF...