P1447

DTC P1447 - FUEL TANK SENSOR CONTROL VALVE CIRCUIT HIGH

OUTLINE OF DIAGNOSIS
Detect the open or short circuit of tank pressure switching solenoid.
Judge NG when the ECM output level is different from actual terminal level.




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

DIAGNOSTIC METHOD




- Abnormality Judgment
Judge NG when the cumulative time of completing the malfunction criteria becomes more than 2.5 seconds.




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

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

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

FAIL SAFE
None

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