A thorough background for drivability diagnosis and tune-up. Includes testing of various components and systems involved in engine operation and the adjustment or replacement as required to restore engine performance, with the use of available equipment. Further serves as an introduction to computerized controls to assist the student with the diagnosis and repair of computer controlled components. The student will have access to: engine, fuel, ignition, electronic and emission analyzers, oscilloscopes, scan tools and other modern equipment. This course will also cover the basic theory, diagnosis and service of automotive air conditioning systems. (Prerequisite: AUTO211W or POI)