P0458

DTC P0458 - EVAPORATIVE EMISSION CONTROL SYSTEM PURGE CONTROL VALVE CIRCUIT

OUTLINE OF DIAGNOSIS
Detect the 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
Perform the diagnosis continuously after starting the engine.

DIAGNOSTIC METHOD




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




- Normality Judgment
Judge OK when the cumulative time until completing all the malfunction criteria becomes more than 1 second.

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 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)