Title:
METHOD FOR DIAGNOSING NOISE-FAILURE OF FUEL LEVEL SENSOR IN VEHICLE
Document Type and Number:
Japanese Patent JP3932514
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a method for diagnosing a noise-failure of a fuel level sensor in a vehicle, so that fuel leakage monitoring can be maintained or stopped based on whether the fuel level sensor is in noise-failure or not.
SOLUTION: When a predetermined diagnosis beginning condition is satisfied, a conversion value converted from a signal from a fuel level sensor is compared with a predetermined value, and a detection of a fluctuation is counted in accordance with the comparison. When a fluctuation detection duration exceeds a predetermined period and a fluctuation detection counter value exceeds a first predetermined number, a noise-failure occurrence is counted and a noise-failure of the fuel level sensor is warned of in the case that the noise-failure counter value exceeds the second predetermined number.
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Inventors:
Cho, Joon Kwan
Application Number:
JP2003000431516
Publication Date:
March 30, 2007
Filing Date:
December 25, 2003
Export Citation:
Assignee:
HYUNDAI MOTOR CO LTD
International Classes:
G01F23/00; G01M17/00; B60K15/06; B60K15/077; G01F19/00; G01F25/00; G01F23/00; G01M17/00; B60K15/03; B60K15/077; G01F19/00; G01F25/00; (IPC1-7): G01F23/00; B60K15/077; G01F25/00