For courses in Automotive Electrical Systems and Electronics, Engine Performance, and Emissions Testing. Diagnosis and Troubleshooting of Automotive Electrical, Electronic, and Computer Systems, Sixth Edition, covers both automotive electrical and engine performance topics all in one book. NATEF-correlated, the text presents the principles and practices of diagnosis and troubleshooting of automotive electrical, electronic, and computer systems in a clear, concise format and at a level of detail that far exceeds most similar texts.