Subaru 2009 IMPREZA Service Manual page 1621

Diagnostic Trouble Code (DTC) Detecting Criteria
5. DIAGNOSTIC METHOD
• Abnormality Judgement
Judge as NG when the following conditions are established.
Judgement Value
Malfunction Criteria
Output voltage difference between Max.
and Min.
Time Needed for Diagnosis: Less than 1 second
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-
cles.
• Normality Judgement
Judge as OK and clear the NG if the following conditions are established.
Judgement Value
Malfunction Criteria
Output voltage difference between Max.
and Min.
Time Needed for Diagnosis: Less than 1 second
Threshold Value
< 0.02 V (Equivalent to
approximately 0.5°C
(0.9°F) near 25°C)
Threshold Value
0.02 V
GD(H4DOTC)-33
GENERAL DESCRIPTION