On-Vehicle

1. INSPECT IAC VALVE FOR OPERATING SOUND





Check that there is a clicking sound immediately after stopping the engine.
If the operation is not as specified, check the IAC valve, wiring and ECM.
2. INSPECT IAC VALVE RESISTANCE

NOTICE: "Cold" and "Hot" in these sentences express the temperature of the coils themselves. "Cold" is from -10°C (14°F) to 50°C (122°F) and "Hot" is from 50°C (122°F) to 100°C (212°F).

(a) Disconnect the IAC valve connector.





(b) Using an ohmmeter, measure the resistance between the terminals (B1 - S1 and S3, B2 - S2 and S4).





Resistance: If resistance is not as specified, replace the AC valve.

(c) Reconnect the IAC valve connector.