P1094

DTC P1094 - TUMBLE GENERATED VALVE SIGNAL 1 CIRCUIT MALFUNCTION (OPEN)

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




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

DIAGNOSTIC METHOD




At the main 1C, check the sent signal at each timing which occurs just before the tumble generated valve output is set to ON and OFF, and judge open NG when the open NG signal is sent 10 seconds in a row. Judge OK and clear the NG when the OK signal is sent.

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
Tumble generated valve control: Not allowed to move tumble generated valve.

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