Low Idling Speed

FAULT TRACING INFORMATION

Conditions
^ DTCs absent.
^ Engine warm.
^ Fault permanent.

Fault Sources
^ Throttle Body (TB) incorrectly adjusted.
^ Defective Idle Air Control (IAC) Valve.

TESTING PROCEDURE





Check Throttle Opening
^ START engine and allow to idle.
^ Read off value of throttle angle.

Throttle angle should read 9.5° - 11.5° at Closed Throttle Position (CTP).

If value OK:
- Proceed to: Check IAC Valve Connector, section below.
If value differs:
- Adjust TB and pulley.





Check IAC Valve Connector
^ Clean and grease ECM and IAC valve connectors.

If symptom persist:
- Test with a new IAC valve.