Supercharger Bypass (SCB) Solenoid
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2006 Mercury Mountaineer, 2006 Mercury Monterey, 2006 Mercury Montego, 2006 Mercury Milan, and 2006 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. 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 is deactivated by the PCM, allowing engine intake manifold vacuum to control the actuator. The SCB solenoid is normally de-energized.