This manual provides comprehensive diagnostic and technical service information for vehicles, a robust line of heavy-duty commercial trucks known for their advanced engineering, efficiency, and driver-centric design. These vehicles, which represent a significant evolution in truck offerings, incorporate sophisticated electronic architectures and efficient powertrains, including D20, D26, and D38 series engines, and the automated manual transmission. The TruckNOLOGY Generation is engineered to meet stringent emissions standards, such as Euro 6, and features advanced driver assistance systems, contributing to their reputation for reliability and performance in demanding commercial applications.

This diagnostic and technical service manual supplement focuses on the interpretation and troubleshooting of Diagnostic Trouble Codes (DTCs) specific to the TruckNOLOGY platform. It covers a wide array of systems, including powertrain management, transmission, chassis and braking, body and cab electronics, and advanced driver assistance technologies. The manual offers detailed explanations for fault code messages, systematic troubleshooting workflows, component testing procedures, and essential wiring diagrams. It is designed to assist certified technicians and experienced mechanics in accurately diagnosing issues, implementing effective repair strategies, and ensuring the optimal performance and longevity of vehicles.