Subaru LEGACY 2006 Manual page 546

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Diagnostic Trouble Code (DTC) Detecting Criteria
3. ENABLE CONDITION
Secondary Parameters
Battery voltage
Engine speed
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously under 4000 rpm engine speed.
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG when all the malfunction criteria below are completed more than 10 times in a row.
Judgment Value
Malfunction Criteria
Cylinder number identification
Amount of crank sensor signal during 1
rev.
Time Needed for Diagnosis: 10 engine rotations
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
Cylinder number distinction
Amount of crank sensor signal during 1
rev.
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
None
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Enable Conditions
≥ 8 V
< 4000 rpm
Threshold Value
Completed
Not = 30
Threshold Value
Completed
= 30
GD(H4SO)-109
GENERAL DESCRIPTION