OTC 3417 HD Scan Kit For heavy-duty shops that need a second tool in the shop and for their mobile repair trucks or for general repair shops Heavy Duty Standard coverage for those who do not own a Genisys or other family tool HD J1587 / J1708 and J1939 CAN Engine Transmission/ABS coverage and more Class 4 - Class 8 truck coverage featuring Automatic Protocol Search Supports multiple Global OBD II trouble code requests