LAUNCH X431 PRO3S+ is a professional diagnostic scan tool that can diagnoses full systems in all vehicle systems on the ECU:read / erase codes, view live data, retrieve ECU version information, do active test and service functions for all systems including ECM, TCM, ABS, SRS, BCM, IMMO, BMS, TPMS, SAS, Fuel System, Light System and A/C system etc.