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Failure-monitor system for an automotive digital control system

  • US 4,667,176 A
  • Filed: 05/14/1984
  • Issued: 05/19/1987
  • Est. Priority Date: 05/17/1983
  • Status: Expired due to Fees
First Claim
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1. A failure-monitor system for an automotive control system comprising:

  • a power source;

    a detector for detecting failure of elements of the control system and producing a fault signal identifying the faulty element;

    a memory for storing said fault signal identifying the faulty element;

    a display unit including a plurality of indicators, each corresponding to one of the elements of said control system, said display unit being associated with said memory for turning on the one of said indicators corresponding to the faulty element identified by the contents of said memory;

    a reset signal generator associated with a preselected vehicle switch operated during normal vehicle driving, and responsive to said vehicle switch being in a predetermined position to produce a reset signal for resetting said memory; and

    a back-up circuit responsive to said fault signal of said detector to connect said memory to said power source bypassing a system main switch.

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