P0519

DTC P0519 IDLE AIR CONTROL SYSTEM PERFORMANCE

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




2. ENABLE CONDITION

3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously if the vehicle speed is at less than 4 km/h (2.49 MPH).




4. DIAGNOSTIC METHOD
Judge as NG when the continuous time of completing the all malfunction criteria below becomes more than the time needed for diagnosis (2 seconds).




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

5. DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When "Clear Memory" is performed

6. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle is completed 3 times in a row
- When "Clear Memory" is performed

7. FAIL SAFE
Fuel cut: Cuts off fuel only #1 and #2 cylinders, or for all cylinders according to vehicle speed, engine speed, and throttle position.

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