Idle Air Control Valve
NOTE:
Only component testing procedure is covered. For Idle Air Control (IAC) valve system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.
Turn ignition off. Disconnect Idle Air Control (IAC) valve 3-pin harness connector for Optima & Magentis (Canadian), Rio and Spectra, and 6-pin harness connector for Sedona and Sorento. For IAC valve location, see Figure-Figure . Check resistance between IAC valve terminals. For IAC valve terminal identification and resistance specification. See Fig 1 and Fig 2 . See IDLE AIR CONTROL VALVE RESISTANCES . If resistances are not as specified, replace IAC valve. For IAC valve removal and installation, see IDLE AIR CONTROL VALVE under AIR INDUCTION SYSTEM in REMOVAL & INSTALLATION article.
Fig 1: Identifying Idle Air Control Valve Connector Terminals (Optima, Magentis (Canadian), Rio & Spectra)
IDLE AIR CONTROL VALVE RESISTANCES
| Measure Between Terminals No. | (1) Resistance - Ohms | |||
|---|---|---|---|---|
| Optima & Magentis (Canadian) | ||||
| 1 & 2 | 17-18 | |||
| 2 & 3 | 15-16 | |||
| Rio | ||||
| 1 & 2 | 16.5-18.5 | |||
| 2 & 3 | 14.5-16.5 | |||
| Sedona | ||||
| 1 & 2 | 29-38 | |||
| 2 & 3 | 29-38 | |||
| 4 & 5 | 29-38 | |||
| 5 & 6 | 29-38 | |||
| Sorento | ||||
| 1 & 3 | 36-40 | |||
| 4 & 6 | 36-40 | |||
| Spectra | ||||
| 1 & 2 | 16.5-18.5 | |||
| 2 & 3) | 14.5-16.5 | |||
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