Apparatus for failure diagnosis of a vehicular foot brake switch
OwnerHideyuki Takahashi, Tadao Kobayashi +2inventors
InventorsHideyuki Takahashi, Tadao Kobayashi, Koji Oguchi, Yoshiaki Moroguchi
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Abstract
An apparatus for failure diagnosis starts counting a frequency of a switching action of a foot brake switch when determining that vehicle speed is higher than a first criterion value, and ceases to count the frequency of the switching action when determining that the vehicle speed has decreased below a second criterion value set to be lower than the first criterion value. When the frequency of the switching action counted by a count section is less than a predetermined value, the apparatus for failure diagnosis determines that the foot brake switch has a failure.
Claims11
An apparatus for failure diagnosis of a vehicular foot brake switch, comprising:
- driving state detection means for detecting driving state of a vehicle;
- count means adapted to start counting a frequency of a switching action of the foot brake switch when determining that vehicle speed of the vehicle exceeds a first criterion value, on the basis of the driving state of the vehicle detected by the driving state detection means, and cease to count the frequency of the switching action when determining that the vehicle speed of the vehicle has decreased below a second criterion value set to be lower than the first criterion value;
- and
- failure determination means adapted to determine that the foot brake switch has a failure when the frequency of the switching action of the foot brake switch counted by the count means is less than a predetermined value.
An apparatus for failure diagnosis of a vehicular foot brake switch, comprising:
- failure determination means adapted to monitor a switching action of the foot brake switch, and determine that the foot brake switch has a failure when the foot brake switch repeats the switching action at such short intervals that a driver cannot repeat operation.
Dependencies are inferred from the claim text.