Unit 1, Automotive Vehicle Workshop Environment Studies: Housekeeping, Working relationships, Safe working practices, Statutory regulations and Accident and emergency procedures. Unit 2, Remove and Refit Components: Tools, equipment and materials, Layout and operating principles of vehicle systems, Remove and refit system components and Evaluate system performance. Unit 3, Fault Diagnosis: Identify, access and select information, Tools and equipment, Diagnose system and components faults and Recognise diagnostic results, make appropriate recommendations.