#
IDLE AIR CONTROL (IAC) VALVE INSPECTION [L3]

BME011320661W01

  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. Disconnect the IAC valve connector.

3. 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 [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 [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