Subaru IMPREZA GD 2007 Series Manual page 2276

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Diagnostic Trouble Code (DTC) Detecting Criteria
CW:DTC P1518 STARTER SWITCH CIRCUIT LOW INPUT
1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of starter SW.
Judge as OFF NG when the engine starts without starter ON experience.
2. ENABLE CONDITION
Secondary Parameters
None
3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.
4. DIAGNOSTIC METHOD
Abnormality Judgment
Judge as OFF NG when the continuous time of meeting the malfunction criteria below becomes three sec-
onds or more.
Judgment Value
Malfunction Criteria
Vehicle speed
It took 0.8 seconds or more at engine
starting, and then it turned after engine
starting.
Starter ON signal
Engine speed in 0.8 seconds or more for
which the condition that engine speed is
less than 500 rpm continues
Time Needed for Diagnosis: Undetermined
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in two continuous driving
cycles.
Normality Judgment
Judge as OFF OK and clear the NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
Starter ON
Starter ON diagnosis
Battery voltage
5. DTC CLEAR CONDITION
• When the OK idling cycle is completed 40 times in a row
• When "Clear Memory" is performed
6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITIONS
• When the OK driving cycle is completed three times in a row
• When "Clear Memory" is performed
7. FAIL SAFE
None
8. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
Enable Conditions
Threshold Value
< 1 km/h (0.62 MPH)
Not detected
≥ 500 rpm
Threshold Value
Experienced
Not diagnosed
> 8 V
GD(STI)-209
GENERAL DESCRIPTION