The Proton Waja is a compact sedan, produced from approximately 2000 to 2007, developed on the Mitsubishi Lancer Cedia platform. This Malaysian-manufactured vehicle offers a balance of performance and affordability, leveraging proven Mitsubishi powertrain technology for reliability. Powered by a 1.6L Mitsubishi 4G18 engine, the Waja was designed as a practical family car, making it a popular choice in Southeast Asian markets. Its engineering basis on a well-established platform contributed to its reputation for dependable operation and accessible maintenance.

This Factory Workshop Service Repair Manual provides comprehensive coverage for the Proton Waja's 1.6L (4G18) Mitsubishi engine. It is designed for technicians and automotive enthusiasts, offering detailed procedures for engine mechanicals, electrical systems, cooling, lubrication, fuel, intake, exhaust, and engine management systems. The manual includes disassembly and reassembly instructions, troubleshooting guides, maintenance schedules, repair procedures, component testing, torque specifications, and critical measurements, ensuring proper upkeep and repair of the vehicle's core powertrain.