PCM monitors idle RPM. If actual idle speed is lower than commanded by 100 RPM for over 10 seconds, the PCM sets a P0506 DTC.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Monitor idle speed | 1. Intake system for blockage 2. Throttle plate for carbon deposits |
Enable Conditions |
•
Normal idle conditions | |
Threshold value |
•
Actual engine speed is lower than target engine speed by 100 RPM | |
Diagnosis Time |
•
Continuous | |
MIL On Condition |
•
3 driving cycles |
