To provide a fault diagnosis device and a fault diagnosis method for a vehicle that can record data coincident in time of log data by respective ECUs if any of a plurality of ECUs detects a fault.SOLUTION: A fault diagnosis device comprises a plurality of ECUs 5 and an IVC 2 which transmits and receives data to and from those ECUs 5. Respective ECUs 5 when detecting a fault transmit to other ECUs 5 a data recording instruction signal to record log data thereof, and other ECUs 5 having received the data recording instruction signal record their log data at the time of the detection of the fault. The IVC 2 transmits to the other ECUs 5 having received the data recording instruction signal a data readout instruction signal to output their log data that the ECUs 5 record, and ECUs 5 having received the data read out instruction signal transmit their log data to the IVC 2.SELECTED DRAWING: Figure 11

    【課題】複数あるECUのいずれかにより故障が検出された場合に、各ECUでログデータの時間が一致するデータを記録することができる車両の故障診断装置及び故障診断方法を提供する。【解決手段】複数のECU5と、これらのECU5とデータを送受信するIVC2とを備え、それぞれのECU5は、故障を検出した場合に、他のECU5に対して、各自のログデータを記録する旨のデータ記録指示信号を送信し、データ記録指示信号を受信した他のECU5は、故障が検出された時の各自のログデータを記録し、IVC2は、データ記録指示信号を受信した他のECU5に対して、当該ECU5が記録した各自のログデータを出力する旨のデータ読み出し指示信号を送信し、データ読み出し指示信号を受信したECU5は、各自のログデータをIVC2へ送信する。【選択図】図11


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    Title :

    FAULT DIAGNOSIS DEVICE AND FAULT DIAGNOSIS METHOD FOR VEHICLE


    Additional title:

    車両の故障診断装置及び故障診断方法


    Contributors:

    Publication date :

    2022-12-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR




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