POSITIVE CRANKCASE VENTILATION (PCV) VALVE INSPECTION [MZR 2.0 DISI i-stop]
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Airflow Inspection
1. Disconnect the section (A) of the ventilation hose shown in the figure.
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2. Start the engine and verify that vacuum is applied to the end of the disconnected ventilation hose while the engine is idling.
3. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
4. Disconnect the negative battery cable.
5. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
6. Remove the PCV valve and the oil separator as a single unit. (See POSITIVE CRANKCASE VENTILATION (PCV) VALVE REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
7. Verify that there is no airflow when pressure is applied to port A.
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8. Verify that there is airflow when vacuum is applied to port A.