Subaru 2009 IMPREZA Service Manual page 817

Diagnostic Trouble Code (DTC) Detecting Criteria
3. ENABLE CONDITIONS
Secondary Parameters
Cylinder number identification
Battery voltage
Engine speed
Engine operation
Misfire
Engine load change during 4 milliseconds
4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously at idle speed.
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
Position of camshaft position sensor signal
Time Needed for Diagnosis: 10 engine revs.
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 continuous time while the following conditions are established is more
than the predetermined time.
Judgement Value
Malfunction Criteria
Position of camshaft position sensor signal
Time Needed for Diagnosis: Engine two revolutions
Enable Condition
Completed
8 V
550 rpm — 1000 rpm
Idling
Not detected
12799.8 rpm
Threshold Value
Not between BTDC
10°CA and BTDC
80°CA
Threshold Value
Between BTDC10°CA
and BTDC80°CA
GD(H4SO)-93
GENERAL DESCRIPTION