P0519

DTC P0519 - IDLE CONTROL SYSTEM MALFUNCTION (FAIL-SAFE)

OUTLINE OF DIAGNOSIS
Detect the malfunction that engine speed increases more than that in normal condition during idling.




COMPONENT DESCRIPTION




ENABLE CONDITION

GENERAL DRIVING CYCLE
Always perform diagnosis at less than 4 km/h (2.49 MPH) of vehicle speed.

DIAGNOSTIC METHOD




Judge NG when the continuous time until completing the all malfunction criteria becomes more than the time needed for diagnosis (2 seconds).




- Normality Judgment
Judge OK and clear NG when the continuous time until completing the malfunction criteria becomes more than the time needed for diagnosis (5 seconds).

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
Fuel shut-off: Shut-off fuel for only #1 and #2 cylinder, or for all cylinder in accordance with vehicle speed, engine speed, throttle position

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