On-Vehicle

ON-VEHICLE INSPECTION
1. INSPECT IAC VALVE FOR OPERATING SOUND.
- Check that there is a clicking sound immediately after stopping the engine.
- If operation is not as specified, check the IAC valve, wiring and ECM.





2. INSPECT AIR ASSIST SYSTEM.
- Warm up engine
- Allow the engine to warm up to normal operating temperature.
- Check idle speed

Idle speed (Transmission in neutral): 700 ± 50 rpm

- Check IAC valve operation
- With engine idling, pinch the air hose and check that engine speed drops, and then returns back up to idle speed.
- If operation is not as specified, check the IAC valve, wiring and ECM.