P2004

DTC P2004 - TUMBLE GENERATED VALVE SYSTEM 1 (VALVE OPEN)

1. OUTLINE OF DIAGNOSIS
Detect the malfunction of tumble generated valve motor function.
Judge open fixing malfunction when the opening degree is large even after finishing the tumble generated valve close driving.




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 3 seconds.




- Normality Judgment
Judge OK and clear the NG when the malfunction criteria are completed.

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
Tumble generated valve opening
- For tumble generated valve all closing points learning, not allowed to update to the closing side.
- For tumble generated valve all opening points learning, not allowed to update to the opening side.
Tumble generated valve control
- Output the open signal.

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