Mazda 6 manuals

Mazda 6 Service Manual: Idle air control (iac) valve inspection

Mazda 6 Service Manual / Fuel and emission control systems / Intake-air system / Idle air control (iac) valve inspection

Note

Operation Test

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

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.

Specification


Circuit Open/Short Inspection

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


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

Open circuit

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

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

Short circuit

- 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

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