Check Valve Inspection

Remove the check valve. (See CHECK VALVE REMOVAL/INSTALLATION .)
Verify that there is no airflow when positive pressure is applied to port A.
U.S.A. And Canada Specs.

Courtesy of MAZDA MOTORS CORP.

Except U.S.A. And Canada Specs.

Courtesy of MAZDA MOTORS CORP.
- If there is airflow, replace the check valve. (See CHECK VALVE REMOVAL/INSTALLATION .)
Verify that there is airflow when negative pressure is applied to port A.
- If there is no airflow, replace the check valve. (See CHECK VALVE REMOVAL/INSTALLATION .)