P2021

DTC P2021 INTAKE MANIFOLD RUNNER POSITION SENSOR/SWITCH CIRCUIT LOW (BANK 2)

1. OUTLINE OF DIAGNOSIS
Detect open or short circuit of tumble generator valve position sensor.
Judge NG when the value is out of standard range.




2. COMPONENT DESCRIPTION




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Always perform diagnosis.




5. DIAGNOSTIC METHOD
Judge NG when the continuous time of completing the malfunction criteria becomes more than the time needed for diagnosis (0.5 seconds). Judge OK and clear NG when the malfunction criteria are not completed.

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

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

8. FAIL SAFE
Tumble generator valve position
- Learning of tumble generator valve position fully closed and date renewed to close side.
- Learning of tumble generator valve position fully opened and date renewed to open side.

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