Secondary Air Injection (Air) Control Valve Inspection

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Remove the secondary air injection control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION .)
Verify that there is no air flow between A and B of the AIR control valve port.
- If there is air flow, replace the AIR control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION .)
Fig 1: Identifying Secondary Air Injection Control Valve
Courtesy of MAZDA MOTORS CORP.
Install the vacuum pump to the AIR control valve.
Pressurize the actuator valve of the AIR control with a negative pressure of approx. 60 kPa {0.61 kgf/cm ² , 8.7 psi}.
CAUTION:
- Since the valve actuator of the AIR control could be damaged, do not pressurize positive pressure or negative pressure more than 100 kPa {1.02 kgf/cm² , 14.5 psi}.
Fig 2: Pressurizing Actuator Valve Of The AIR Control With A Negative Pressure
Courtesy of MAZDA MOTORS CORP.
Blow air through port A, then verify that there is air flow.
- If there is no air flow, replace the AIR control valve.
Blow air from through port B, then verify that there is no air flow.
- If there is airflow, replace the AIR control valve. (See SECONDARY AIR INJECTION (AIR) CONTROL VALVE REMOVAL/INSTALLATION .)