Charge Air Cooler (CAC) By-Pass Actuator
WARNING: This page is about a different car, the 2001 Mazda Protege, 2001 Mazda Millenia, 2001 Mazda MX-5 Miata, 2001 Mazda MPV, and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
Remove vacuum hose from air cooler by-pass actuator. See Figure . Connect vacuum pump to CAC by-pass actuator and apply about 7.5 in. Hg of vacuum. Actuator rod should retract. If CAC by-pass actuator does not operate, replace CAC by-pass actuator.