Method and system for correlating a pressure sensor for a fuel system
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United States of America Patent
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Jan 15, 2013
Grant Date -
Jan 20, 2011
app pub date -
Jan 7, 2010
filing date -
Jul 14, 2009
priority date (Note) -
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Abstract
A control module and method for operating the same includes a diurnal control valve module that opens a diurnal control valve (DCV) and an evaporative leak check module (ELCM) diverter valve control module that switches on an ELCM diverter valve. The control module includes a correlation module performs a correlation of a ELCM pressure signal and a fuel tank pressure signal and that generates a fault signal in response to the correlation when the DCV valve is open and the ELCM diverter valve is on.
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