Patent ID: 6192303
Filing Date: 2001-02-20
Classification: G06F

Abstract:
A vehicle diagnosing apparatus comprising:a portable diagnosing unit which is connected to an electronic control unit mounted on a vehicle; anda host computer which wirelessly communicates with said portable diagnosing unit such that the vehicle is diagnosed by said portable diagnosing unit via said electronic control unit according to a diagnosing program corresponding to the kind of electronic control unit and that diagnosing data are transmitted from said portable diagnosing unit to said host computer for processing the diagnosing data therein;characterized in:that said host computer comprises a memory means for storing therein a diagnosing program of each kind of electronic control unit; andthat a diagnosing program corresponding to those data on the kind of electronic control unit which are read by said portable diagnosing unit connected to said electronic control unit of the vehicle is transmitted from said host computer to said portable diagnosing unit;wherein said portable diagnosing unit is provided in a plurality of units; andwherein, when those data on the kind of electronic control unit which are read by a portable diagnosing unit connected to an electronic control unit of a proceeding vehicle coincide with those data on the kind of electronic control unit which are read by a portable diagnosing unit connected to an electronic control unit of a succeeding vehicle, a diagnosing program received by said portable diagnosing unit connected to said electronic control unit of the preceding vehicle is transmitted from said portable diagnosing unit of the preceding vehicle to said portable diagnosing unit connected to said electronic control unit of the succeeding vehicle.