Mazda 6 Service Manual: Purge solenoid valve inspection

Mazda 6 Service Manual / Fuel and emission control systems / Emission system / Purge solenoid valve inspection

Airflow Inspection

Note

Perform the following test only when directed.

1. Disconnect the negative battery cable.

2. Remove the purge solenoid valve. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION.)

3. Inspect airflow between the ports under the following conditions.

If not as specified, replace the purge solenoid valve.
If as specified, carry out the Circuit Open/Short Inspection.

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See F43 PCM REMOVAL/INSTALLATION.)

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

Open circuit

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

- Purge solenoid valve terminal A (harness-side) and PCM terminal 4U

- Purge solenoid valve terminal B (harness-side) and main relay terminal C (harness-side)

Short circuit

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

- Purge solenoid valve terminal A (harness-side) and body GND

- Purge solenoid valve terminal B (harness-side) and power supply

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