1, ELM 327 car scan tool 2, The latest PC-based scan tool 3, Supports all OBD-II protocols 4, Exquisite quality, best ... :1, ELM 327 is the latest PC-based scan tool. It supports all OBD-II protocols and is dispatched with ... turn off the MIL( “ Check Engine”light) Display current sensor data, including:1.Engine RPM2.Calculated Load Value 3.Coolant temperature4 ...