Subaru 2009 IMPREZA Service Manual page 865

Diagnostic Trouble Code (DTC) Detecting Criteria
BW:DTC P0512 STARTER REQUEST CIRCUIT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of starter SW.
Judge as ON NG when the starter SW signal remains ON.
2. ENABLE CONDITIONS
Secondary Parameters
None
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. 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 condition
Starter OFF signal
Battery voltage
Time Needed for Diagnosis: 180000 ms
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
Starter OFF signal
Battery voltage
Time Needed for Diagnosis: Less than 1 second
Enable Condition
Threshold Value
After engine starting
Not detected
8 V
Threshold Value
Detected
8 V
GD(H4SO)-141
GENERAL DESCRIPTION