The 2005 Mazda Protege, chassis code BJ, represents a refined iteration of Mazda's commitment to engaging driving dynamics, embodying the 'Jinba-Ittai' philosophy. As a compact car, it was designed to appeal to value-conscious consumers, commuters, and younger drivers, often competing with models like the Honda Civic and Toyota Corolla. Offered with a choice of a 2.0L FS-DE engine producing 130 hp or a less common 1.6L FP-DE engine, and available with either a 5-speed manual or a 4-speed automatic transmission, the Protege provided a balanced blend of performance and efficiency. Notable features included a focus on handling, with a suspension system designed for responsive road feel, and a comfortable interior with available premium audio and automatic climate control on higher trims. The vehicle also achieved strong safety ratings, including 5-star NHTSA front impact scores and a 'Good' IIHS front offset crash rating. This comprehensive factory service manual provides detailed information for the maintenance, repair, and diagnostics of the 2005 Mazda Protege. With over 1500 pages of factory-level content, it covers all major mechanical, electrical, and body systems, including engine assembly and diagnostics for both the 2.0L and 1.6L engines, manual and automatic transmission overhauls, drivetrain, suspension, steering, and braking systems. The manual also details body electrical components, HVAC systems, interior trim, and body panel work. Essential for owners and technicians alike, it includes step-by-step repair procedures, diagnostic guides with wiring diagrams, recommended maintenance schedules, fluid specifications, and identification of special tools. This resource is designed to ensure the proper upkeep and longevity of your Mazda Protege.