Subaru 2009 IMPREZA Service Manual page 861

Diagnostic Trouble Code (DTC) Detecting Criteria
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgement Value
Malfunction Criteria
Integrated times of the condition reaching
follows,
DELFLMAX
or
SUMFL
At this time,
DELFLMAX: Maximum difference of sen-
sor output for 12288 ms
SUMFL: Integrated value of the sensor
output deviation for12288 ms
Map
Fuel level (2, US gal, Imp gal)
Measured voltage (V)
The diagnosis counter does not count up when the following conditions are completed within 12288 ms.
Maximum value – Minimum value of
change of tank pressure during 12288 ms
Maximum value – Minimum value of bat-
tery voltage during 12288 ms
Time Needed for Diagnosis: 12288 ms × 4 time(s)
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Judgement Value
Malfunction Criteria
DELFLMAX
SUMFL
At this time,
DELFLMAX: Maximum difference of sen-
sor output for 12288 ms
SUMFL: Integrated value of the sensor
output deviation for12288 ms
Time Needed for Diagnosis: 12288 ms
Threshold Value
4 time(s)
Value from Map
25.92 V
10, 2.64, 20, 5.28,
0, 0, 0
2.2
0.27 0.27 0.426
0 kPa (0.375 mmHg,
0 inHg)
1.09 V
Threshold Value
< Value from Map
< 25.92 V
GD(H4SO)-137
30, 7.93, 40, 10.57,
4.4 6.6 8.8
0.582 0.738
GENERAL DESCRIPTION
50, 13.21, 60, 15.85,
11 13.2
0.894 0.894