P0519

DTC P0519 IDLE AIR CONTROL SYSTEM PERFORMANCE

1. OUTLINE OF DIAGNOSIS
Detect malfunctions in which the engine speed continues to rise during idling.

2. ENABLE CONDITION

Enable Conditions:

3. GENERAL DRIVING CYCLE
Perform the diagnosis continuously when the vehicle is running at a speed of less than 4 km/h (2 MPH).

4. DIAGNOSTIC METHOD
Judge as NG when the continuous time of meeting the all malfunction criteria below becomes more than 2 seconds.






Time Needed for Diagnosis: 2 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Normality Judgment
Judge as OK and clear NG when the continuous time of meeting the malfunction criteria below becomes more than 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 for 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)