HDS 250 Bosch Heavy-Duty Diagnostic Scan Tool 12 / 24 Volt Heavy-duty scan tool for Class 4 - 8 vehicles. Read, diagnose and clear HD standard trouble codes. A brilliant color display shows code descriptions and definitions, graphs live data MIDS/PIDS and can record and playback data streams. Quick Test pulls Global OBD II codes for data analysis and diagnosis. Meets SAE standards for HD J1587 / 1708 and J1939 CAN and includes engine, transmission and ABS coverage. Works on 12V and 24V systems to cover most medium- and heavy-duty vehicles in North America. Internet updateable for new and expanded vehicle coverage. Ideal as a shop's second tool or as a portable, on-truck diagnostic tool for field repairs. Includes 16-pin J1962, 9-pin Deutsch and 6-pin Deutsch cables.