Secondary Air Injection (Air) Control Valve Function; Secondary Air Injection (Air) Control Valve Construction/Operation - Mazda RX-8 2004 Service Highlights

System Diagram
VACUUM
CHAMBER
TWC
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SECONDARY AIR INJECTION (AIR) CONTROL VALVE FUNCTION

• Opens/closes the path of air sent from the AIR pump to the exhaust ports.
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SECONDARY AIR INJECTION (AIR) CONTROL VALVE CONSTRUCTION/OPERATION

FROM SECONDARY
AIR INJECTION
PUMP
• Mainly consists of an actuator and reed valve.
• When the AIR solenoid valve is turned on, negative pressure is applied to the actuator diaphragm, opening the
inner valve and sending the air from the AIR pump to the exhaust ports.
01–16–4
EMISSION SYSTEM
AIR SOLENOID VALVE
A
AIR PORT
EXHAUST
PORT
AIR CONTROL VALVE
ACTUATOR
DIAPHRAGM
: SECONDARY AIR FLOW
AIR PORT
EXHAUST
PORT
A
AIR PUMP
SPRING
TO EXHAUST PORT
CHU0116S004
CHU011613990S01
CHU011613990S02
VALVE
REED VALVE
CHU0116S005