Subaru IMPREZA GD 2007 Series Manual page 1906

asieps_tobira_IM_US.book 115 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostic Trouble Code (DTC) Detecting Criteria
5. DIAGNOSTIC METHOD
Abnormality Judgment
When normal, there should be three cam signals per two engine revolutions. If a condition where it is not
three signals continues, It is judged as NG.
When the engine speed is 100 rpm or faster, if the following conditions are established it is judged as NG.
Judge as OK and clear the NG when the following criteria are not established.
Judgment Value
Malfunction Criteria
Number of camshaft sensor signals dur-
ing 2 revs.
Time Needed for Diagnosis: 100 engine revs.
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Normality Judgment
Judge as OK and clear the NG when the malfunction criteria below are met.
Judgment Value
Malfunction Criteria
Number of camshaft sensor signals dur-
ing 2 revs.
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
• Ignition timing whole learning compensation:
– Enter the initial value (whole learning compensation factor = 0.5, Variable amount of whole learning
compensation factor = 0.25) to the whole learning compensation factor and variable amount of whole
learning compensation factor when IG OFF, and then make the whole learning incomplete.
– Enter the initial value (whole learning compensation factor = 0.5, Variable amount of whole learning
compensation factor = 0.25) to the whole learning compensation factor and variable amount of whole
learning compensation factor when making a normality judgment from abnormality judgment, and then
make the whole learning incomplete.
• Ignition timing partial learning compensation:
– Enter the initial value (0°CA) to the compensation value of partial learning zone with IG OFF.
– Enter the initial value (0°CA) to the compensation value of the partial learning zone when making an ab-
normality → normality judgment.
• AVCS control:
– Maximum timing retard learning is not complete or maximum timing retard learning completion is not ex-
perienced.
– → ISC feedback compensation: Do not perform the AVCS actual timing advance compensation.
– Make the OCV driving Duty to be the given value (9.36%).
9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)
BB:DTC P0345 CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 2)
NOTE:
For the diagnostic procedure, refer to DTC P0340. <Ref. to GD(H4DOTC)-114, DTC P0340 CAMSHAFT POSI-
TION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR), Diagnostic Trouble Code (DTC) Detecting Criteria.>
Threshold Value
< 3
Threshold Value
3
GD(H4DOTC)-115
GENERAL DESCRIPTION