Subaru 2009 IMPREZA Service Manual page 811

Diagnostic Trouble Code (DTC) Detecting Criteria
5. DIAGNOSTIC METHOD
• Abnormality Judgement
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.
Judgement Value
Malfunction Criteria
Starter switch
Crankshaft position sensor signal
Battery voltage
Time Needed for Diagnosis: 3000 ms
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgement
Judge as OK and clear the NG if the continuous time while the following conditions are established is more
than the predetermined time.
Judgement Value
Malfunction Criteria
Crankshaft position sensor signal
Battery voltage
Time Needed for Diagnosis: Less than 1 second
Threshold Value
ON
Not detected
8 V
Threshold Value
Input exists
8 V
GD(H4SO)-87
GENERAL DESCRIPTION