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Home >> Mazda >> 1989 >> 323 Base, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (System/Component Tests) >> Fuel System >> By-Pass Air Control (BAC) System >> BAC Valve

BAC Valve

WARNING: This page is about a different car, the 1989 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect valve connector. Using ohmmeter, check resistance between valve terminals. Resistance should be 10.7-12.3 ohms. Apply battery voltage and ground to valve terminals.
  2. Listen for operating sound from valve. Replace valve if resistance is not within specification or no operating sound exists.