Failure-diagnosis information collection system

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication

Reexamination Certificate

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Details

C701S033000

Reexamination Certificate

active

08078355

ABSTRACT:
A failure-diagnosis information collection system facilitates failure diagnosis in a vehicle. Electronic control units (ECUs) constituting an onboard network perform abnormality detection processing for a detected abnormality. When a duration during which an abnormality recognizing condition for a detected abnormality is established reaches an abnormality recognition time, abnormality information and a principal time stamp associated with the time point are stored. When the abnormality recognizing condition is established for the first time, a first preliminary time stamp that is time-instant information associated with the time point is stored. When the duration during which the abnormality recognizing condition is established reaches half of the abnormality recognition time, a second preliminary time stamp that is time-instant information associated with the time point is stored. Consequently, an abnormality that is a major factor having triggered other multiple abnormalities can be readily identified based on the first and second preliminary time stamps.

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Extended European Search Report dated Aug. 27, 2010, issued in corresponding European Application No. 08010384.9-2206.
Japanese Office Action dated Jan. 20, 2009, issued in corresponding Japanese Application No. 2007-152767, with English translation.

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