Subaru LEGACY 2006 Manual page 577

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
Number of times that the difference
between the Max. fuel level and Min. fuel
level every 60 seconds is 2 2 (0.53 US
gal, 0.44 Imp gal) or more (with enable
condition completed)
Maximum – Minimum tank pressure
(with enable condition completed)
Maximum – Minimum fuel temperature
(with enable condition completed)
If the maximum value – minimum value for the fuel level every 60 seconds is less than 2 liters, extend 60 sec-
onds and make judgment with the maximum and minimum values for the fuel level in 120 seconds. If a dif-
ference does not appear though the time was extended 60 seconds, extend the time (180, 240, 300 seconds)
and continue the judgment. If the maximum value – minimum value for the fuel level is more than 2 2, the
diagnosis counter counts up.
Time Needed for Diagnosis: 1 minute × 16 times or more
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
Maximum – Minimum tank pressure
6. DTC CLEAR CONDITION
• When the OK idling cycle is completed 40 times in a row
• When "Clear Memory" is performed
7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
• When the OK driving cycle is completed 3 times in a row
• When "Clear Memory" is performed
8. FAIL SAFE
Purge control solenoid valve control: Purge fixed mode is prohibited.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Threshold Value
≥ 16 times
< 0.05 kPa (0.375
mmHg, 0.01 inHg)
≥ 7°C (12.6°F)
Threshold Value
≥ 0.05 kPa (0.375
mmHg, 0.01 inHg)
GD(H4SO)-140