Idle Speed Control Monitoring

13. Idle Speed Control Monitoring

Idle speed control rationality diagnosis

General Description:
This diagnosis detects the stability of the idle speed. If the commanded idle speed and the actual idle speed is not within a calibratable value, above or below commanded, in spite of an activated idle speed controller the idle speed is considered to be out of range. If the deviation is > threshold, the idle speed controller monitor would detect a fault.

If the above failure conditions are detected, the appropriate DTC will be stored.