Subaru 2009 IMPREZA Service Manual page 1679

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
Output voltage
Time Needed for Diagnosis: 1000 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
Output voltage
Time Needed for Diagnosis: Less than 1 second
Threshold Value
4.709 V
Threshold Value
< 4.709 V
GD(H4DOTC)-91
GENERAL DESCRIPTION