Fahrzeugdiagnose mit OBD II

Since around the year 2000, vehicles have provided access to diagnostic data, measurement values, and detected errors that can be read using affordable devices. This data not only assists you in troubleshooting but also in purchasing used cars or smoothly passing the next main inspection. The increasing complexity and interconnectivity of the integrated electronic control and management systems in vehicles require a profound understanding of the subject from both automotive mechatronics technicians and ambitious DIY enthusiasts. This non-fiction book offers a comprehensive introduction to the standardized on-board diagnostic capabilities (OBD II) available in motor vehicles, including their origins, current state of development, protocol structure, and application. The book is aimed at a broad readership who wants to utilize these capabilities to avoid costly workshop visits or is interested in developing their own diagnostic systems and practical descriptions of the protocols. By using inexpensive diagnostic adapters (ELM 327, etc.), you can display live data on your smartphone and retrofit cockpit instruments or create your own application software for various systems. Topics covered include: historical development of diagnostic capabilities and standards, functionality of OBD II with all ten diagnostic modes and readiness codes, World Wide Harmonized OBD (WWH-OBD) and HD OBD (Heavy Duty: commercial vehicles), connections according to SAE J1962, SAE J1939, SAE J1708, and DoIP (ISO 13400), protocol structure according to SAE J1850, ISO 9141, ISO 14230, and CAN, an overview of common diagnostic solutions for hobby users, building diagnostic systems with Arduino and Raspberry Pi, all parameter identifiers (measurement values) for OBD II, and an extensive list of error codes for reference.