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Vehicle state tracking method and apparatus for diagnostic testing

  • US 7,643,916 B2
  • Filed: 06/14/2006
  • Issued: 01/05/2010
  • Est. Priority Date: 06/14/2006
  • Status: Active Grant
First Claim
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1. A computer-implemented method of tracking a state of a vehicle during a diagnostic test sequence, comprising:

  • determining a precondition required for a diagnostic test;

    reading a state register;

    verifying a current first setting of the state register corresponding to the precondition;

    determining a vehicle condition not required for the diagnostic test;

    verifying a current second setting of the state register corresponding to the condition; and

    specifying a second test preparation step related to the condition based on the second setting being valid.

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