IDLE AIR CONTROL (IAC) VALVE INSPECTION [LF, L3]

Note

• Perform the following inspection only when directed.

Operation Test

1. Carry out the "Idle Air Control Inspection". (See Idle Air Control System Inspection.)

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

Resistance Inspection

1. Disconnect the negative battery cable.

2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [L3].)

3. Disconnect the IAC valve connector.

4. Measure the resistance between the IAC valve terminals using an ohmmeter.

• If not as specified, replace the IAC valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [LF, L3].)

• If as specified but the Operation Test is failed, carry out the "Circuit Open/Short Inspection".

Specification

Ambient temperature (°C {°F})	Resistance (ohms)
23 {73}	8.8-10.6

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [LF, L3].)

2. Inspect the following wiring harnesses for open or short (continuity check).

Open circuit

• If there is no continuity, the circuit is open. Repair or replace the harness.

- IAC valve terminal A (harness-side) and PCM terminal 4G

- IAC valve terminal B (harness-side) and PCM terminal 4J

Short circuit

• If there is continuity, the circuit is shorted. Repair or replace the harness.

- IAC valve terminal A (harness-side) and power supply

- IAC valve terminal A (harness-side) and GND

- IAC valve terminal B (harness-side) and power supply

- IAC valve terminal B (harness-side) and GND