The Mazda 3, part of the first generation (BK Series) produced from 2003 to 2009, is a compact car celebrated for its engaging driving dynamics, upscale interior appointments for its segment, and overall reliability. Available as a 4-door sedan or a 5-door hatchback, this model was engineered to offer a sporty yet practical experience, competing effectively with established players like the Honda Civic and Toyota Corolla. It was offered with a choice of efficient 1.6-liter (104 hp) and a more powerful 2.0-liter (148 hp) DOHC inline-4 engines, paired with either a 5-speed manual or a 4-speed automatic transmission. The 2006 model year represented a mid-cycle update, enhancing its appeal within the compact car market. This comprehensive Service and Repair Manual provides in-depth guidance for maintaining and repairing the 2006 Mazda 3 (BK Series). It covers all essential vehicle systems, including engine mechanical and management, manual and automatic transmissions, drivetrain, suspension, steering, brakes, and the electrical system. Furthermore, the manual details procedures for body and chassis work, HVAC, and safety systems like airbags. Owners and technicians will find extensive information on preventive maintenance schedules, diagnostic procedures, step-by-step repair instructions, component rebuilding, special tool requirements, and precise tightening torques. This manual is designed to assist both professional technicians and experienced DIY enthusiasts in keeping the Mazda 3 in optimal condition. 🏷️ Basic Information Identification Make: Mazda Model: Mazda 3 Year: 2006 Generation Generation: 1st Generation (BK Series) Codes Chassis Codes: BK14 👋 Introduction Market Position Segment: Compact Car / Small Family Car Usp: Sporty handling, upscale interior for its class, good reliability. Competitive Analysis Key Competitors: Honda Civic, Toyota Corolla, Ford Focus, Volkswagen Golf, Nissan Sentra. Key Features Design Philosophy: Zoom-Zoom driving dynamics. Body Styles Offered: 4-door Sedan, 5-door Hatchback. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English Format: Digital (likely PDF) Page Count Estimated Page Count: 1500-2500 pages (typical for comprehensive service manuals) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, cylinder head, pistons, connecting rods, crankshaft, lubrication system, cooling system, timing system (belt/chain), intake and exhaust manifolds. Engine Management: Fuel injection system, ignition system, emission control systems (catalytic converter, EVAP), sensors (MAP, TPS, O2, Knock), actuators, ECM/PCM diagnostics and programming. Transmission Manual: Clutch, gear selection, internal components, lubrication, removal and installation. Transmission Automatic: Torque converter, hydraulic control system, gear sets, valve body, electronic controls, lubrication, removal and installation. Drivetrain: Front-wheel drive (FWD) axle shafts, CV joints, differential, rear suspension components (for AWD variants, if applicable). Suspension: Front struts, control arms, ball joints, bushings, steering knuckles. Rear independent suspension (multi-link or similar), shock absorbers, springs, control arms, bushings. Steering: Power steering system (hydraulic/electric), steering column, steering rack/gearbox, tie rod ends, alignment specifications. Brakes: Front and rear disc brake systems, brake calipers, pads, rotors, master cylinder, brake lines, ABS system (including sensors, modulator, control module), parking brake system. Electrical System: Battery, charging system (alternator, regulator), starting system (starter motor), lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, body control module (BCM). Body And Chassis: Body construction, panels, doors, hood, trunk lid, windows, glass, interior trim, exterior trim, structural components, corrosion protection. HVAC: Air conditioning system (compressor, condenser, evaporator, refrigerant lines, R-134a), heating system, blower motor, climate control module, cabin air filter replacement. Safety Systems: Airbag system (SRS module, sensors, control unit, airbags), seatbelt pre-tensioners, safety restraint system diagnostics. Procedures Included Preventive Maintenance: Oil changes, filter replacements (oil, air, cabin, fuel), coolant flushes, brake fluid changes, spark plug replacement, belt inspections and replacement. Diagnostic Procedures: Troubleshooting guides for common symptoms, DTC (Diagnostic Trouble Code) retrieval and interpretation, component testing procedures, wiring harness testing. Repair Procedures: Step-by-step instructions for component removal, installation, and repair for all major systems. Component Rebuilding: Detailed instructions for engine overhauls, transmission overhauls, and other major component rebuilds. Special Tools: Identification and usage instructions for specialized tools required for specific repairs. Tightening Torques: Precise torque specifications for all critical fasteners. Electrical Troubleshooting: Detailed wiring diagrams, circuit tracing guides, and component resistance/voltage testing procedures. Technical Depth Depth Of Coverage: Comprehensive, covering everything from basic maintenance to complex diagnostics and full mechanical overhauls. Target Audience: Professional automotive technicians and experienced DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) - likely searchable and printable. Print Quality Image Resolution: High resolution for clear diagrams and illustrations. Text Quality: Clear, crisp text, often with hyperlinked table of contents for easy navigation. Binding Type Binding Type: N/A (Digital format) Paper Type Paper Quality: N/A (Digital format, but intended for printing on standard paper) ⚙️ Engine Specifications Primary Engine Engine Code 1: Z6 Engine Displacement 1: 1.6 Liters (1598 cc) Engine Type 1: DOHC 16-valve Inline-4, Naturally Aspirated Horsepower 1: 104 hp @ 6000 rpm (approx.) Torque 1: 108 lb-ft @ 4000 rpm (approx.) Fuel System 1: Electronic Fuel Injection (EFI) Secondary Engine Engine Code 2:...