P1443

DTC P1443 - VENT CONTROL SOLENOID VALVE FUNCTION PROBLEM

OUTLINE OF DIAGNOSIS
Detect vent control solenoid valve function problem (closed sticking). Judged NG when fuel tank pressure is low.




ENABLE CONDITION

GENERAL DRIVING CYCLE
Always perform the diagnosis continuously.

DIAGNOSTIC METHOD




- Abnormality Judgment
Judge NG when the continuous time of condition which satisfies the malfunction criteria becomes more than time needed for diagnosis (3 seconds).




- Normality Judgment
Judge OK when all the malfunction criteria are completed, and then NG are cleared.

DTC CLEAR CONDITION
- When the OK warm up cycle was completed 40 consecutive times
- When "Clear Memory" was performed

MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle was completed 3 consecutive times
- When "Clear Memory" was performed

FAIL SAFE
PCV control: Open PCV solenoid valve

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