P2008

DTC P2008 INTAKE MANIFOLD RUNNER CONTROL CIRCUIT / OPEN (BANK 1)

1. OUTLINE OF DIAGNOSIS
Detect the open or short circuit of tumble generated valve motor.
Judge NG when the open signal is sent from IC after tumble generated valve driving IC diagnosis.




2. COMPONENT DESCRIPTION




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD




At the main IC, check the sent signal at each timing which occurs just before the tumble generated valve output is set to ON --> OFF, and judge open NG when the open NG signal is sent 1 second in a row.
Judge OK and clear the NG when the OK signal is sent.

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 CONDITION
- When the OK driving cycle is completed 3 times in a row
- When "Clear Memory" is performed

8. FAIL SAFE
Tumble generator valve control: Not allowed to move tumble generated valve.

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