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ELECTRONIC CONTROL DEVICE

  • US 20100004814A1
  • Filed: 07/02/2009
  • Published: 01/07/2010
  • Est. Priority Date: 07/04/2008
  • Status: Active Grant
First Claim
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1. An electronic control device capable of performing processing indicated by a command when receiving the command from outside of the electronic control device, the device comprising:

  • a diagnosis unit for performing diagnosis of at least one diagnosis item while energized and for storing, to a trouble information storage, trouble information indicative of a trouble detected by the diagnosis;

    a non-volatile memory that is capable of storing data in a re-writable manner;

    an information selection unit for selecting, from among the trouble information in the trouble information storage, trouble information to be saved in the non-volatile memory based on a save criterion and storing the selected trouble information in a buffer; and

    a trouble information preservation unit for performing preservation of the trouble information by writing the trouble information stored in the buffer into the non-volatile memory after a turning-off of an ignition switch of a vehicle, upon receiving a command from outside of the device, whereinthe trouble information preservation unit causes the information selection unit to select the trouble information prior to performing processing indicated by the received command whenever the received command is a specific command that indicates erasure of the trouble information from the trouble information storage.

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