The PCM/ECM monitors engine speed deviation from the target idle engine speed when the vehicle is stopped and the throttle valve opening is stable. The PCM/ECM sets DTC P0506 if the difference to the target idle engine speed is lower than the predetermined threshold.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Monitoring deviation between target idle speed and actual engine speed | 1. Restriction in intake or exhaust system 2. Contact resistance in connectors 3. Faulty ETC |
Enable Conditions |
•
Coolant temp. > 165℉
•
Time elapsed after ( pedal value = 0% and vehicle speed = 0mph)
•
11< Battery voltage <16
•
No relevant failure | |
Threshold Value |
•
Current RPM < Target RPM -100rpm Engine speed too Low | |
Diagnostic Time |
•
17 sec. | |
Mil On Condition |
•
2 driving cycle |
