Subaru LEGACY 2006 Manual page 474

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Diagnostic Trouble Code (DTC) Detecting Criteria
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criteria below becomes 1 second or
more.
Judgment Value
Malfunction Criteria
Output voltage difference between Max.
and Min.
Time Needed for Diagnosis: 1 second
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
Output voltage difference between Max.
and Min.
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
Intake air temperature sensor process: Intake air temperature is fixed at 20°C (68°F).
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Threshold Value
< 20 mV (Equivalent to
approximately 0.5°C
(0.9°F) near 25°)
Threshold Value
≥ 20 mV
GD(H4SO)-37
GENERAL DESCRIPTION