P0459

DTC P0459 - EVAPORATIVE EMISSION CONTROL SYSTEM PURGE CONTROL VALVE CIRCUIT HIGH

OUTLINE OF DIAGNOSIS
Detect open or short circuit of purge control solenoid valve.
Judge NG when ECM output level is different from actual terminal level.




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVING CYCLE
Always perform the diagnosis after starting the engine.

DIAGNOSTIC METHOD




- Abnormality Judgment
Judge NG when the continuous time of completing the malfunction criteria becomes more than the time needed for diagnosis (2.5 seconds).




- Normality Judgment
Judge OK and clear NG when the malfunction criterion is completed.

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
None

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