The average car now contains much more electronic circuitry than would have been the case even five years ago. Often texts covering vehicle electronics dwell on unnecessary maths and general electronics principles. This practical guide discusses electronics only within the context of the vehicle system under consideration and thus keeps theory to a minimum. Using numerous diagrams and photographs and step by step instructions, it gives a clear description of vehicle electronic systems and fault diagnosis and then continues to cover the testing and repair of these systems. Regular reviews and summaries help consolidate learning and make this book ideal for the workshop and classroom.