The Mazda Protege, produced for the 2002 and 2003 model years under the BJ chassis code, represents a line of vehicles known for their sporty handling and value. Available in sedan and hatchback body styles, including performance-oriented variants like the Mazdaspeed Protege, these vehicles offered a range of engine options, such as the 1.6L Z5-DE and the 2.0L FS-DE. This generation of the Protege is recognized for its well-engineered chassis and responsive driving dynamics, making it a popular choice for both everyday commuting and spirited driving. This factory service repair manual provides comprehensive English-language documentation for all Protege styles, covering hundreds of pages of essential information. It serves as an authoritative guide for owners, DIY enthusiasts, and independent repair shops, offering detailed step-by-step repair procedures, advanced troubleshooting diagnostics, and fundamental maintenance guidelines. The manual covers all major vehicle systems, including the engine, transmission, brakes, electrical systems, suspension, and chassis, enabling users to perform servicing, rebuilding, and restoring tasks with factory-level accuracy and potentially saving on labor costs.