Method for diagnosing a noisy failure of a fuel level sensor...

Details Method for diagnosing a noisy failure of a fuel level sensor... Method for diagnosing a noisy failure of a fuel level sensor...

2006-04-04

2006-04-04

Williams, Hezron (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Liquid level or volume measuring apparatus

Reexamination Certificate

active

07021117

ABSTRACT:
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 noisy failure occurrence is counted and a noisy failure of the fuel level sensor is warned of in the case that the noisy failure counter value exceeds the second predetermined number.

REFERENCES:
patent: 4611287 (1986-09-01), Kobayashi et al.
patent: 6904783 (2005-06-01), Elenich et al.
patent: 1 310 776 (2003-05-01), None
patent: 08147043 (1996-06-01), None
patent: 2002-249588 (2002-09-01), None

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