Subaru 2009 IMPREZA Service Manual page 766

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Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

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

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-

Fuel temperature

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-

• 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

Engine coolant temperature at the last

engine stop — Minimum engine coolant

temperature after the engine start

Time Needed for Diagnosis: Less than 1 second

Threshold Value

< 2.5 °C (36.5 °F)

5 °C (41 °F)

< 2.5 °C (36.5 °F)

< 35 °C (95 °F)

Threshold Value

2.5 °C (36.5 °F)