Malfunction diagnostic apparatus for vehicle control system
First Claim
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1. A malfunction diagnostic apparatus for a vehicle control system, comprising:
- detecting means for detecting a malfunction state of a vehicle control system;
memory means for storing information representing the detected malfunction state;
memory output means for outputting information, representing the detected malfunction state, stored in said memory means;
timer means for counting a period of time since said detecting means last detected the malfunction state;
inhibiting means for inhibiting said memory output means from outputting malfunction state information stored in said memory means only when the period of time counted by said timer means exceeds a fixed period of time;
means for producing an inhibition release signal; and
means for disabling said inhibiting means in response to the produced inhibition release signal so that said memory output means can output information, representing the detected malfunction state, stored in said memory means.
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Abstract
There is disclosed a malfunction diagnostic apparatus for a vehicle control system wherein a period of time after the last detection of a malfunction state is set by a timer, to inhibit the display of stored information when the period of time has exceeded over a specific period of time, and to release the inhibited display in accordance with an inhibition release signal.
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7 Claims
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1. A malfunction diagnostic apparatus for a vehicle control system, comprising:
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detecting means for detecting a malfunction state of a vehicle control system; memory means for storing information representing the detected malfunction state; memory output means for outputting information, representing the detected malfunction state, stored in said memory means; timer means for counting a period of time since said detecting means last detected the malfunction state; inhibiting means for inhibiting said memory output means from outputting malfunction state information stored in said memory means only when the period of time counted by said timer means exceeds a fixed period of time; means for producing an inhibition release signal; and means for disabling said inhibiting means in response to the produced inhibition release signal so that said memory output means can output information, representing the detected malfunction state, stored in said memory means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification