IDLE AIR CONTROL (IAC) VALVE INSPECTION [AJ] (VIN: JM0 LW10J300 301406-, JMZ LW69J7*# 307683-, JM8 LW28J**# 301514-, JM8 LW28A**# 301514- (Assumed))


BME011320661W01

Note
• Perform the following test only when directed.

Operation Test

1. Carry out the "Idle Air Control Inspection". (See Idle Air Control 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 [AJ].)
• If as specified but the Operation Test is failed, carry out the "Circuit Open/Short Inspection".
Resistance
8.69-10.56 ohms

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [AJ].)

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 87
- IAC valve terminal B (harness-side) and PCM terminal 88

Short circuit

• If there is continuity, the circuit is short. 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