Subaru IMPREZA GD 2007 Series Manual page 2232

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Diagnostic Trouble Code (DTC) Detecting Criteria
4. DIAGNOSTIC METHOD
Calculate the Max. value (delflmax) and cumulative value (sumfl) of output voltage variation of fuel level sen-
sor during 12.3 seconds. Judge it normal when both Max. and cumulative values are not over the threshold
value. Otherwise, when either of them is over the threshold value, the diagnosis counter counts up. Judge as
NG if the counter indicated 6 counts.
Diagnosis condition
Diagnosis timer
Fuel level sensor
A/D value
Amount of Fuel level
output voltage variation
Diagnosis counter
12.3S
Calculate the Max. value (delvflmx)
and the cumulative value (sumvfl).
3
2
1
0
GD(STI)-165
GENERAL DESCRIPTION
Malfunction
Normal
6
5
4
NG at 6 counts
EN-01857