To improve failure diagnostic accuracy of a non-volatile memory.SOLUTION: An automobile electronic control device writes the same data to a plurality of data banks secured in a non-volatile memory during self shutdown in which an ignition switch is turned OFF. And the automobile electronic control device determines whether each data written to the plurality of data banks is normal at the time of starting in which the ignition switch is turned ON (S11, S12), and if at least one of the data is not normal (S13), writes the data determined to be normal to the data banks written with the data determined not to be normal (S14). And if the data cannot be written normally (S16), the automobile electronic control device diagnoses that the non-volatile memory has failed (S19).SELECTED DRAWING: Figure 4

    【課題】不揮発性メモリの故障診断精度を向上させる。【解決手段】自動車用電子制御装置は、イグニッションスイッチがOFFになったセルフシャットダウン中に、不揮発性メモリに確保された複数のデータバンクに同一データを書き込む。また、自動車用電子制御装置は、イグニッションスイッチがONになった起動時に、複数のデータバンクに書き込まれた各データが正常であるか否かを判定し(S11,S12)、データの少なくとも1つが正常でなければ(S13)、正常でないと判定されたデータが書き込まれていたデータバンクに正常であると判定されたデータを書き込む(S14)。そして、自動車用電子制御装置は、データを正常に書き込むことができなければ(S16)、不揮発性メモリが故障していると診断する(S19)。【選択図】図4


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    Title :

    AUTOMOBILE ELECTRONIC CONTROL DEVICE


    Additional title:

    自動車用電子制御装置


    Contributors:

    Publication date :

    2020-03-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G11C Statische Speicher , STATIC STORES / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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