This books explains the fundamentals of Automotive Computerized Diagnostics, and also elaborate on the theories and working principles behind the technology. It further provided practical Diagnostics step by step procedures and instructions for performing various kinds of Automotive Computerized Diagnostics and programming procedures in different brands of cars. The book is uses a practical approach with several photos and illustrations from over 20 diff different erent kinds of Diagnostics Tools and software which would help the reader to have a broader perspective and knowledge as regards the subject.