Apparatus and method for calibrated testing of a vehicle electrical system

  • US 4,207,611 A
  • Filed: 12/18/1978
  • Issued: 06/10/1980
  • Est. Priority Date: 12/18/1978
  • Status: Expired due to Term
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First Claim
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1. A method of testing a vehicle electrical system including the steps of:

  • connecting a voltage measuring means in parallel across the vehicle battery and the vehicle electrical system;

    measuring a first voltage level across the vehicle battery and the vehicle electrical system;

    actuating a portion of the vehicle electrical system;

    measuring a second voltage level;

    calculating a voltage difference as a function of the first and second voltage levels;

    comparisng the voltage difference to a predetermined voltage magnitude; and

    determining if the actuated portion of the electrical system is operating properly by observing if the voltage difference is substantially the same as the predetermined voltage magnitude, which would indicate acceptable or proper operation, or if the voltage difference is substantially different from the predetermined voltage magnitude, which would indicate a malfunction or improper operation.

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