A process operates a communication network of a motor vehicle having a control device connected to a data bus. The process includes the steps of: a) determining a global supply voltage of the voltage source, b) checking whether the determined global supply voltage exceeds a specified upper voltage threshold or falls below a specified lower voltage threshold, c) providing information representing the determined global supply voltage and/or the exceeding or falling-below to control devices, d) when a fault is detected by a respective control device, checking by use of the provided information whether the global supply voltage exceeds or falls below the respective voltage threshold, and e) when an exceeding or falling-below the concerned voltage threshold by the global supply voltage is present, a respective control device, when detecting a fault, instead of information representing the detected fault, writes into its fault memory information representing the exceeding or falling-below the concerned voltage threshold by the global supply voltage as a possible cause of the fault.


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    Title :

    DOKUMENTATION VON FEHLERN IN EINEM FEHLERSPEICHER EINES KRAFTFAHRZEUGS


    Additional title:

    DOCUMENTATION OF FAULTS IN A FAULT MEMORY OF A MOTOR VEHICLE
    DOCUMENTATION D'ERREURS AU SEIN D'UNE MÉMOIRE D'ERREURS D'UN VÉHICULE À MOTEUR


    Contributors:

    Publication date :

    2018-03-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    German


    Classification :

    IPC:    G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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