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Diagnosis system for a motor vehicle

  • US 5,003,479 A
  • Filed: 02/02/1989
  • Issued: 03/26/1991
  • Est. Priority Date: 02/18/1988
  • Status: Expired due to Term
First Claim
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1. A diagnosis system for diagnosing an electronic control system mounted on a vehicle, the electronic control system having sensing means for providing output data representing operating conditions of the vehicle and control means responsive to said output data for providing control data to control the vehicle, the diagnosis system having a diagnosis device with connecting means for transmitting signals between said electronic control system and said diagnosis device, a keyboard for inputting a mode code to designate one of said data in said electronic control system as designated data, and display means for displaying said designated data, the diagnosis device including a programmed computer comprising:

  • interpreting means responsive to said mode code for interpreting said mode code for the designated data and for providing a corresponding mode signal;

    retrieving means responsive to said mode signal of said interpreting means for retrieving at least one of an abbreviation and units corresponding to said designated data; and

    communication means responsive to said mode signal of said interpreting means for demanding and receiving said designated data from said electronic control system;

    said display means responsive to output signals of said retrieving means and said communication means for displaying said designated data together with said at least one of said abbreviation and said units, so as to easily identify said designated data without looking up its identification in a manual.

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