Idle Speed/Throttle Actuator - Electronic: Testing and Inspection

IACV-AAC valve
1. Disconnect IACV-AAC valve harness connector.




2. Check resistance between the following terminals.
terminal (2) and terminals (1), (3)
terminal (5) and terminals (4), (6)

Resistance: Approximately 30 Ohms [at 20 °C (68 °F)]




3. Reconnect IACV-AAC valve harness connector.
4. Remove idle air adjusting unit assembly (IACV-AAC valve is built-in) from engine.
(The IACV-AAC valve harness connector should remain connected.)
5. Turn ignition switch "ON" and "OFF", and ensure the IACV- AAC valve shaft smoothly moves forward and backward, according to the ignition switch position.
If NG, replace the IACV-AAC valve.

IACV-FICD solenoid valve




Disconnect IACV-FICD solenoid valve harness connector.
- Check for clicking sound when applying 12 V direct current to terminals.




- Check plunger for seizing or sticking.
- Check for broken spring.