P0011

DTC P0011 - "A" CAMSHAFT POSITION - TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE (BANK 1)

OUTLINE OF DIAGNOSIS
Detect the malfunction of AVCS system.
Judge NG when the amount of AVCS actual timing advance does not approach to the amount of AVCS target timing advance. Judge NG when the most timing retard learning value is not normal range.




COMPONENT DESCRIPTION




ENABLE CONDITION (FOR ABNORMALITY JUDGMENT ONLY)

GENERAL DRIVING CYCLE
Always perform the diagnosis after idling when the engine speed 1,500 rpm or more. (Enable condition at A) Always perform the diagnosis after idling when the engine speed 500 rpm or more. (Enable condition at B)

DIAGNOSTIC METHOD
- Judge NG when the difference of the amount of AVCS target timing advance and the amount of AVCS actual timing advance becomes large.(In case of enable condition B)
- Judge NG when the most timing retard learning value is not normal range.
- Abnormality Judgment
Judge NG when the continuous time of completing the malfunction criteria becomes more than 20 seconds.




Time Needed for Diagnosis: 10 seconds
Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

- Normality Judgment




Judge OK and clear the NG when the continuous time of completing the malfunction criteria becomes more than 3 seconds.

DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When Clear Memory was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 times in a row
- When "Clear Memory" was performed

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 when IG OFF.
- Enter the initial value (0 °CA) to the compensation value of partial learning zone when making a normality judgment from abnormality judgment.

- AVCS control: Most timing retard learning is not complete or most timing retard learning completion is not experienced.
- ISC feedback compensation: Do not perform the AVCS actual timing advance compensation. Make the OCV driving Duty to be the given value (9.36%).

ECM OPERATING AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)