Turbocharger Wastegate Actuator
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The turbocharger wastegate actuator is a canister device containing a diaphragm controlled by an applied vacuum. The diaphragm is attached to a connecting rod that is attached to the turbocharger wastegate. The vacuum source applied to the turbocharger wastegate actuator is controlled by the PCM to using the turbocharger wastegate regulating valve solenoid to vary the amount of vacuum applied to the diaphragm.