FCar F502 heavy duty truck handheld code reader/scanner 2nd edition Scan heavy-duty trucks by J1939 and J1708 Scan truck ECU components to read all DTC, clear Code and show live data. The components are including Engine, Transmission, Brake, Turbo charger, Axle, Power unit, Trailer, Instrument cluster and much more OBD16 via diesel 6pin or diesel 9pin connectors 2nd generation of F502 HD code reader