Idle speed fluctuates (MIL works OK, no DTCs set) (L4: KA/KC)

Idle speed fluctuates (MIL works OK, no DTCs set)

Diagnostic procedure

1.	Do the PCM idle learn procedure.
2.	Check the idle speed.
3.	Do the carbon accumulation check.
4.	Troubleshoot the A/C signal circuit.

Also check for

	Incorrect valve adjustment
	Intake air leaks