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.




ENABLE CONDITION

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

DIAGNOSTIC METHOD




- Abnormality Judgment 1
Judge NG when the continuous time until completing the all malfunction criteria becomes more than the time needed for diagnosis (2 seconds).




- Abnormality Judgment 2
Judge NG when the continuous time until completing the all malfunction criteria becomes more than the time needed for diagnosis (5 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)