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This course provides automotive technicians with a comprehensive understanding of Variable Valve Timing (VVT) systems in modern engines. Technicians will learn how VVT enhances engine performance, fuel efficiency, and emissions, while also gaining the skills needed to diagnose common issues such as timing control, cam phasers, oil control solenoids, and system sensors. The course emphasizes the interpretation of scan tool data, mechanical inspection, and testing procedures, with a focus on diagnosing VVT-related drivability problems, fault codes, and performance complaints. Through case studies, students will develop the expertise to troubleshoot both domestic and import vehicles effectively.