Automotive vehicle electrical system diagnostic device

  • US 7,126,341 B2
  • Filed: 07/19/2002
  • Issued: 10/24/2006
  • 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:

  • an inline series connection between the automotive vehicle electrical system diagnostic apparatus, an electrical system of, an automotive vehicle and a battery of the vehicle, comprising;

    a first electrical terminal configured to electrically couple to a first terminal of the battery coupled to the electrical system of the automotive vehicle; and

    a second electrical terminal configured to electrically couple to electrical wiring of the automotive vehicle, the first and second electrical terminals configured to connect in series between the battery of the automotive vehicle and the electrical system of the automotive vehicle;

    a low resistance electrical path connected in series between the first and second electrical terminals, the electrical system of the automotive vehicle and the battery of the vehicle configured to carry an electrical current to operate the vehicle therethrough;

    digital sample circuitry coupled to the low resistance electrical path configured to provide a plurality of digital samples during operation of the vehicle which are related to the electrical current flowing through the low resistance electrical path; and

    a memory configured to store the plurality of digital samples.

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