VACUUM CHECK VALVE INSPECTION [WL-C, WE-C]

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1.  Remove the vacuum check valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-C, WE-C].)

2.  Blow through port A and verify that the airflows from port B.

•  If not as specified, replace the vacuum check valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-C, WE-C].)

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3.  Blow through port B and verify that the air does not flow from port A.

•  If not as specified, replace the vacuum check valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [WL-C, WE-C].)