| 摘要 |
PURPOSE:To facilitate trouble diagnosis of respective electronic controllers by mounting a plural number of electronic controllers on a vehicle, and connecting respective parallel circuits of receiving and sending means of respective electronic controllers to a diagnosis device for a vehicle through connecters for external connection. CONSTITUTION:A diagnosis system for a vehicle comprises an electronic controller 500 mounted on a vehicle, and a diagnosis device 25 for a vehicle diagnosing input and output data of the electronic controller 500 connected to the diagnosis device 25 through a connector 24 for external connection. In this case a plural number of electric controllers 501-504 are mounted on the vehicle. And on the respective electronic controllers 501-504, respective receiving means 554a-554d for receiving respective data from the diagnosis device, respective decoding means 553a-553d for discriminating and interpreting respective electronic controllers 501-504 as diagnosis object, and respective sending means 555a-555d for sending the data are provided. Besides respective parallel circuits of the receiving and sending means are connected to the connecter 24 for external connection. |
