Idle Air Control (IAC) Valve Inspection

Resistance Inspection

NOTE: Perform the following test only when directed.

1. Carry out the "Idle Air Control (IAC) Inspection". (Refer to Idle Air Control Inspection.)
Testing and Inspection

- If not as specified, perform the further inspection for the IAC valve.

2. Disconnect the negative battery cable.




3. Disconnect the IAC valve connector.

Resistance: 7.7 - 9.3 Ohm [23 °C (73 °F)]

4. Measure the resistance between the IAC valve terminals by using an ohmmeter.
- If not as specified, replace the IAC valve.

- If not as specified, but PID value is failed, inspect for the following:
1. Remove the PCM.




2. Connect the SST (104 Pin Breakout Box) to the PCM as shown.
3. Tighten the connector attaching screw.

Tightening torque:
7.9 - 10.7 Nm (80 - 110 kg.cm, 69.5 - 95.4 in.lb)

4. Inspect for an open or short circuit in the following wiring harnesses by probing the applicable sensor and SST (104 Pin Breakout Box) terminals with ohmmeter leads.

Open circuit
- Power circuit (IAC valve connector terminal A and PCM connector terminal 54)
- Ground circuit (IAC valve connector terminal B and PCM connector terminal 83)

Short circuit
- IAC valve connector terminal A and PCM connector terminal 54 to Ground

5. If there is an open or short circuit, repair or replace wiring harnesses.
6. If the above open or short circuit is okay, replace IAC valve.
7. Reconnect the IAC valve connector.
8. Reconnect the negative battery cable.