Supercharger Bypass (SCB) Solenoid/(Thermactor Air Control Solenoid/Vacuum Valve Assembly)
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
The SCB solenoid is used to control intake manifold vacuum to the vacuum bypass actuator. This part is replaced under the part name of thermactor air control solenoid/vacuum valve assembly (part number 9H465). The PCM transmits an output signal to the SCB solenoid, thereby activating the solenoid to apply stored vacuum from the reservoir to the actuator when an undesirable condition occurs in the engine. Once the engine condition has been corrected, the solenoid will be deactivated by the PCM, allowing engine intake manifold vacuum to control the actuator. The SCB solenoid is normally de-energized.