AUTOMOTIVE COMPUTERIZED AND ELECTRICAL DIAGNOSTICS TECHNOLOGY is a book that deals with the technology behind computerized and electrical diagnosis of systems and components in the vehicle. This book provides theories of the operations of the On-Board Diagnostic (OBD) protocol; which include the OBD I and OBD II protocol.This book is present a practical approach to automotive diagnostic technology, with step by step analysis.The book also entails the use of various kind of diagnostic tools for various diagnostics operations, the terminology involves in the diagnostic procedure and also the technology behinds it operation.The render step by step procedures of diagnostics operations which is compatible for all kind of diagnostic tool, with necessary advices on how to perform the operations. It also touches all kind of diagnostic tools and diagnostics operation available in the automotive technology industry.This book also cover aspect such as Electronic Control Unit (ECU) reprogramming and repairs, it involves reprogramming of various systems and components in the vehicle.Some key topics in this book involves:1. AUTOMOTIVE DIAGNOSTICS TECHNOLOGY.2. THE ON-BOARD DIAGNOSTICS (OBD I) SYSTEM/PROTOCOL. 3. HOW TO DIAGNOSE USING OBD I PROTOCOL.4. ON-BOARD DIAGNOSTIC (OBD II) SYSTEM/PROTOCOL.5. DIAGNOSTIC TOOLS/SCANNERS.6. ELM327.7. LIMITATIONS OF ELM327.8. ELECTRONIC CONTROL UNIT (ECU) AND SENSORS.9. CONTROLLER AREA NETWORK (CAN).10. CHECK ENGINE LIGHT.11. CODE READERS VERSUS DIAGNOSTIC SCANNERS.12. CURRENT AND STORED FAULTS CODES.13. SOFTWARE/APPLICATIONS FOR DIAGNOSTICS TOOLS.14. CRACKED SOFTWARE VERSION AND CLONED SCAN TOOLS.15. IMMOBILIZERS.16. VIN- VEHICLE IDENTIFICATION NUMBER.17. SCN- SOFTWARE CALIBRATION NUMBER coding.18. MULTIPLEXING19. WARNING LIGHTS.20. SENSORS AND APPLICATIONS.21. APPLICATION OF SENSORS IN BRAKING AND STABILITY SYSTEM OF VEHICLES.22. AUTOMOBILE DIAGNOSTIC TECHNOLOGY IN AFRICA (TAKING NIGERIA AS A CASE STUDY). 23. IMPORTANCE OF EVENT/HISTORY RECORDS IN AUTO DIAGNOSTICS TECHNOLOGY.24. IMPORTANCE OF REGULAR DIAGNOSTICS OPERATION.25. MECHATRONICS IN AUTOMOBILE DIAGNOSTICS TECHNOLOGY. 26. ELECTRIC VEHICLES.27. CLASSIFICATION AND FEATURES OF DIAGNOSTIC TOOLS/SCANNERS.28. GENERIC FAULT CODES.29. CHOOSING A DIAGNOSTIC TOOL/SCANNER.30. HOW TO USE A DIAGNOSTIC TOOL/SOFTWARE.31. STEP BY STEP DIAGNOSTIC PROCEDURE.32. REPROGRAMMING OF SYSTEMS AND COMPONENTS IN THE VEHICLE.33. STEPS TO REPROGRAM THE AIRBAG SYSTEM.34. IMMOBILIZER AND ECU REPROGRAM