The PCM monitors engine speed deviation from the target idle engine speed when the vehicle is stopped and the throttle valve opening is stable. The PCM 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 the Actual Idle Speed Deviation From the Target Engine Speed | 1. Poor Connector Connection 2. Restricted Intake or Exhaust System 3. Vacuum Leaks 4. Defected Throttle Body |
Enable Conditions |
•
Engine Coolant Temp. higher than 163.4℉(73℃)
•
5 sec. elapsed after pedal value = 0% and vehicle speed = 0 mph
•
Battery voltage higher than 11V and lower than 16V
•
No relevant DTC present | |
Threshold Value |
•
Deviation of Target RPM and Current RPM higher than 100 RPM(Engine speed too low) | |
Diagnostic Time |
•
17 sec. | |
Mil On Condition |
•
2 Driving Cycle |
