Charge Air Cooler By-Pass (CACBYP) Actuator
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mazda Protege5, 2002 Mazda Protege, 2002 Mazda Millenia, 2002 Mazda MX-5 Miata, and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Remove vacuum hose from CACBYP actuator. See Figure . Connect vacuum pump to CACBYP actuator and apply about 7.5 in. Hg of vacuum. Actuator rod should retract. If CACBYP actuator does not operate, replace CACBYP actuator.