Diagnosis system for motor vehicles and the method thereof

  • US 5,758,300 A
  • Filed: 07/30/1997
  • Issued: 05/26/1998
  • Est. Priority Date: 06/24/1994
  • Status: Expired due to Term
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First Claim
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1. A diagnosis system for a motor vehicle having an electronic control unit, comprising:

  • a diagnosis apparatus selectively connected to said electronic control unit through a wire harness for bi-directional communication therebetween; and

    an external computer provided to perform wireless communication with said diagnosis apparatus, the external computer having a medium storing service-related information;

    wherein said diagnosis apparatus has a keyboard for an operator to input a command, a microprocessor responsive to said input command for performing the bi-directional communication with said electronic control unit to obtain operational data of said electronic control unit and additionally performing upon selection of one possible command the wireless communication with said external computer to obtain only an object part of said service-related information relating to said obtained operational data, and a display for sequentially indicating said obtained data and said obtained service-related information.

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