Subaru LEGACY 2006 Manual page 594

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Diagnostic Trouble Code (DTC) Detecting Criteria
Abnormality Judgment
Judge as NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
Integrated times of the condition reach-
ing follows,
DELFLMAX ≥ 0.2 — 0.26 V or SUMFL ≥
16 V
At that time, DELFLMAX: Maximum dif-
ference of sensor output for 12.2 sec-
onds; SUMFL: Integrated value of the
sensor output deviation for 12.2 seconds
The diagnosis counter does not count up when the following conditions are completed within 12.2 seconds.
Maximum value – minimum value of
change of tank pressure during 12.2 sec-
onds
Maximum value – minimum value of bat-
tery voltage during 12.2 seconds
Time Needed for Diagnosis: 12.2 seconds × 4 times
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
DELFLMAX
SUMFL
At that time, DELFLMAX: Maximum dif-
ference of sensor output for 12.2 sec-
onds; SUMFL: Integrated value of the
sensor output deviation for 12.2 seconds
5. DTC CLEAR CONDITION
• When the OK idling cycle is completed 40 times in a row
• When "Clear Memory" is performed
6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
• When the OK driving cycle is completed 3 times in a row
• When "Clear Memory" is performed
7. FAIL SAFE
None
8. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Threshold Value
≥ 4 times
≥ 0.05 kPa (0.375
mmHg, 0.02 inHg)
≥ 1.65 V
Threshold Value
< 0.2 — 0.26 V
< 16 V
GD(H4SO)-157
GENERAL DESCRIPTION