Automotive vehicle electrical system diagnostic device

  • US 7,642,787 B2
  • Filed: 10/24/2006
  • Issued: 01/05/2010
  • Est. Priority Date: 11/03/1997
  • Status: Expired due to Term
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First Claim
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1. An automotive vehicle electrical system diagnostic apparatus, comprising:

  • a mount configured to temporarily mount the diagnostic apparatus to the vehicle;

    a first Kelvin connection configured to temporarily electrically couple to a first terminal of a battery of an automotive vehicle;

    a second Kelvin connection configured to temporarily electrically couple to electrical wiring of the automotive vehicle;

    digital sample circuitry coupled to the first and second Kelvin connections configured to provide a plurality of digital samples during operation of the vehicle which are related to a dynamic parameter of the battery measured with the first and second Kelvin connections;

    a memory configured to store the plurality of digital samples; and

    a processor configured to store the digital sample in the memory in response to detection of engine operation, the stored digital sample for subsequent use in diagnosing the vehicle electrical system.

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