Air Flow Inspection

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove the AIR solenoid valve. (See SECONDARY AIR INJECTION (AIR) SOLENOID VALVE REMOVAL/INSTALLATION .)
Inspect air flow between the ports under the following conditions:

Fig 1: AIR Solenoid Valve Terminals Continuity & Air Flow
Courtesy of MAZDA MOTORS CORP.
- If there is no malfunction, inspect the related wiring harnesses.
- If there is any malfunction, replace the AIR solenoid valve. (See SECONDARY AIR INJECTION (AIR) SOLENOID VALVE REMOVAL/INSTALLATION .)
  
  Fig 2: Identifying AIR Solenoid Valve Ports
  Courtesy of MAZDA MOTORS CORP.