The Mazda 3, first generation (BK chassis), produced from 2003 to 2008, is a sporty and practical compact car available as a 4-door sedan or 5-door hatchback. Embodying a sporty driving philosophy, it offers engaging driving dynamics and a driver-focused cockpit. Available with either a 1.6L engine producing 104 hp or a more powerful 2.0L engine delivering 148 hp, and paired with a 5-speed manual or optional 4-speed automatic transmission, the Mazda 3 was designed for younger buyers and families seeking stylish and reliable transportation. It garnered significant recognition, including Car of the Year for 2004, and consistently achieved strong safety ratings. This comprehensive service manual provides detailed information for the maintenance and repair of the Mazda 3 BK generation. It covers a wide range of systems, including engine mechanical and electrical components, manual and automatic transmissions, suspension, steering, brakes, and electrical chassis systems. The manual also details body and interior work, safety restraint systems, and offers in-depth diagnostics and troubleshooting guidance. Owners, mechanics, and technicians will find essential information on routine maintenance procedures, major repair processes, component replacement, diagnostic codes, wiring diagrams, and precise technical specifications, ensuring the longevity and optimal performance of the vehicle. 🏷️ Basic Information Identification Make: Mazda Model: 3 Generation: BK (First Generation) Production Years: 2003-2008 Codes Chassis Code: BK 👋 Introduction Market Position Market Segment: Compact Car (C-segment) Target Audience: Younger buyers, families seeking practical and stylish transportation Competitive Analysis Key Competitors: Honda Civic, Toyota Corolla, Ford Focus, Volkswagen Golf Key Features Design Philosophy: Zoom-Zoom driving dynamics, sporty styling, driver-focused cockpit Body Styles: 4-door Sedan, 5-door Hatchback 📋 Manual Details Coverage Areas Manual Type: Service Manual Language: English Format: PDF Download Vehicle Coverage: Mazda 3 BK (2003, 2004, 2005, 2006, 2007, 2008 models) 📖 Manual Coverage Systems Covered Engine Mechanical: Full engine overhaul, component testing, timing systems, lubrication, cooling, fuel delivery, emission controls Engine Electrical: Ignition system, starting system, charging system, engine control module (ECM) diagnostics, sensors, actuators Transmission Manual: Clutch system, gearbox repair, gear ratios, shift mechanism, drive shafts, lubricants Transmission Automatic: Automatic transmission disassembly/assembly, hydraulic control, torque converter, transmission control module (TCM), fluid service Suspension Steering: Front and rear suspension components, shock absorbers, springs, bushings, power steering system, steering gear, alignment specifications Brakes: Hydraulic system, ABS, EBD, brake rotors, pads, calipers, master cylinder, bleeding procedures, parking brake Electrical Chassis: Lighting systems (headlights, taillights, interior), power windows, locks, mirrors, wipers, horn, charging system, battery, fuse box locations Body Interior: Body panel removal/installation, doors, hood, trunk, interior trim, seats, upholstery, HVAC system (heater, air conditioning) Safety Restraint: Airbag system components, seat belt mechanisms, SRS module diagnostics Diagnostics Troubleshooting: Diagnostic Trouble Codes (DTCs), fault finding, wiring diagrams, component testing procedures Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, fluid level checks, tire rotation Major Repairs: Engine rebuilds, transmission overhauls, suspension component replacement, brake system repairs Component Replacement: Alternator, starter motor, water pump, fuel pump, radiator, exhaust system components Diagnostics: Troubleshooting guides for common symptoms, sensor testing, actuator testing Wiring Diagrams: Detailed electrical schematics for all vehicle systems Specifications: Torque specifications, clearances, tolerances, fluid capacities, electrical values Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete component rebuilds and advanced diagnostics. 📊 Manual Specifications File Format File Format: PDF Searchable Text: Yes Printable: Yes Quality: High-resolution scans for clarity Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code 1: MZR 1.6L (ZL-DE) Displacement 1: 1.6 liters (1598 cc) Configuration 1: Inline-4, DOHC, 16-valve Horsepower 1: 104 hp (78 kW) @ 6000 rpm Torque 1: 102 lb-ft (138 Nm) @ 4500 rpm Fuel System 1: Electronic Multi-Point Fuel Injection (MPI) Secondary Engine Engine Code 2: MZR 2.0L (LF-DE) Displacement 2: 2.0 liters (1999 cc) Configuration 2: Inline-4, DOHC, 16-valve Horsepower 2: 148 hp (110 kW) @ 6000 rpm Torque 2: 135 lb-ft (183 Nm) @ 4500 rpm Fuel System 2: Electronic Multi-Point Fuel Injection (MPI) Performance Engine Options: Available with 1.6L and 2.0L MZR engines 🔧 Transmission Standard Transmission Type 1: 5-speed Manual Optional Transmission Type 2: 4-speed Automatic (with Activematic) Features Automatic Features: Sport mode, sequential manual shifting capability 📐 Dimensions Exterior Sedan Length: 4415 mm (173.8 in) Width: 1745 mm (68.7 in) Height: 1465 mm (57.7 in) Exterior Hatchback Length: 4340 mm (170.9 in) Width: 1745 mm (68.7 in) Height: 1470 mm (57.9 in) Weights Curb Weight Min: Approx. 1290 kg (2844 lbs) Curb Weight Max: Approx. 1390 kg (3064 lbs) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (Driver), 5-Star (Passenger) IIHS Front Offset: Good Active Features ABS: Standard Ebd: Standard Traction Control: Optional on some trims Passive Features Airbags Front: Standard Airbags Side Curtain: Optional Seatbelts: Front pretensioners, 3-point rear seatbelts 💡 Technology Features Infotainment Audio System: Optional Bose premium audio system on higher trims, standard...