Charge Control Actuator

WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.

Ensure engine is cool. Remove hose connected to actuator. Connect vacuum pump to charge control actuator. See Fig 1 .
Apply 2 in. Hg vacuum to charge actuator. Ensure actuator rod moves when vacuum is applied. If actuator rod does not move, replace charge actuator.

Fig 1: Testing Charge Control Actuator

Courtesy of MAZDA MOTORS CORP.