Airflow Inspection
Note
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.


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
- 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
- Purge solenoid valve terminal A (harness-side) and body GND
- Purge solenoid valve terminal B (harness-side) and power supply
Purge solenoid valve removal/installation
Egr valve removal/installationMazda 6 Service Manual: Electrical parts
Battery cable
Before disconnecting connectors or removing electrical parts, disconnect
the negative battery cable.
Wiring Harness
To remove the wiring harness from the clip in the
engine room, pry up the hook of the clip using a
flathead screwdriver.
...
Mazda 6 Service Manual: Valve clearance adjustment
1. Disconnect the negative battery cable.
2. Remove the tire (RH).
3. Remove the splash shield (RH).
4. Remove the spark plugs. (See SPARK PLUG REMOVAL/INSTALLATION.)
5. Remove the high-tension lead.
6. Remove the oil control valve (OCV) connector.
7. Remove the ventilation hose.
8. Remove th ...