P2088

DTC P2088 OCV SOLENOID VALVE SIGNAL A CIRCUIT OPEN (BANK 1)

1. OUTLINE OF DIAGNOSIS
Detect open circuit of oil flow control solenoid valve.
Judge open NG when the current flow is small whereas duty signal is large




2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

4. DIAGNOSTIC METHOD




- Abnormality Judgment
Judge NG when the continuous time of completing the malfunction criteria becomes more than 2 seconds.




- Normality Judgment
Judge OK and clear NG when the continuous time of completing the malfunction criteria becomes more than 2 seconds.

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

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

7. 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 degree CA) to the compensation value of partial learning zone when IG OFF.
- Enter the initial value (0 degree 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%).

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