Subaru IMPREZA GD 2007 Series Manual page 1844

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Diagnostic Trouble Code (DTC) Detecting Criteria
5. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as NG if the continuous time of meeting the following conditions is 2.5 seconds or more.
Judgment Value
Malfunction Criteria
Engine coolant temperature at the last
engine stop – Minimum engine coolant
temperature after the engine start
Fuel temperature at the last engine stop
– Fuel temperature
Intake air temperature – Fuel tempera-
ture
Fuel temperature
Normality Judgment
When the following conditions are established, judged as OK.
Judgment Value
Malfunction Criteria
Engine coolant temperature at the last
engine stop – Minimum engine coolant
temperature after the engine start
Time Needed for Diagnosis: 2.5 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in two continuous driving
cycles.
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 CONDITIONS
• When the OK driving cycle is completed three 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)
Threshold Value
< 2.5°C (37°F)
≥ 5°C (41°F)
< 2.5°C (37°F)
< 35°C (95°F)
Threshold Value
≥ 2.5°C (37°F)
GD(H4DOTC)-53
GENERAL DESCRIPTION