Shutter Valve Actuators

Disconnect vacuum hose from shutter valve actuators No. 1 and 2. See Fig 1 . Connect vacuum pump to actuator. Apply vacuum to each actuator separately and verify shutter valve rod retracts. Ensure both shutter valves move freely. Replace actuator as necessary.

Fig 1: Identifying Variable Resonance Induction System

Courtesy of MAZDA MOTORS CORP.