Subaru LEGACY 2006 Manual page 448

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
5. DIAGNOSTIC METHOD
Judge as NG when the continuous time of meeting the malfunction criteria below becomes more than the
time needed for diagnosis (10 seconds). Judge as OK and clear the NG when the continuous time of not
completing the malfunction criteria below becomes more than the time needed for diagnosis (10 seconds).
Judgment Value
Malfunction Criteria Threshold Value
Front oxygen (A/F) sensor impedance > 50 Ω
Time Needed for Diagnosis: 10 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
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
• Front oxygen sensor (A/F) sensor main learning compensation: Not allowed to calculate.
• Front oxygen (A/F) sensor sub learning compensation: Not allowed to calculate.
• Purge control: Not allowed to purge.
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
GD(H4SO)-11