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Fault detection and isolation in automotive wiring harness by network analysis method

  • US 5,066,919 A
  • Filed: 04/03/1990
  • Issued: 11/19/1991
  • Est. Priority Date: 04/03/1990
  • Status: Expired due to Fees
First Claim
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1. An automotive electrical system comprising:

  • a plurality of electrical components including at least one termination device;

    a wiring harness system interconnecting said electrical components and including a plurality of harness conductors and a plurality of connectors, at least one of said connectors being a termination connector connected to a termination device, said wiring harness system including a dedicated test line provided by a termination conductor disposed in said termination connector and provided by more than one of said harness conductors, said dedicated test line including a test point, selected ones of said connectors including an impedance, each impedance coupling said dedicated test line in each respective connector to a predetermined electrical potential;

    electrical source means connected to said test point for applying a test signal to said dedicated test line at said test point; and

    measuring means connected to said test point for sensing a response of said dedicated test line during application of said test signal, whereby an electrical characteristic of said response identifies a connector fault in said wiring harness system.

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