Air Bypass Valve Inspection (BP With TC)
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the air bypass valve. (See VACUUM HOSE ROUTING DIAGRAM (BP WITH TC) .)
- Connect the vacuum pump to the vacuum ports of the air bypass valve.
- Verify that the airflow is as indicated in the table.
- If there is any malfunction, replace the air bypass valve.
Connecting Vacuum Pump To Vacuum Ports Of Air Bypass ValveVacuum (kPa {mmHg, inHg}) Valve operation condition Airflow between port A-B Approx.-37 {-280, -11} Open Yes Less than -14 {-100, -4.0} Closed No