Solenoid Box

The Solenoid Box contains the solenoid valves that control the Vacuum Actuators. There is one solenoid for each Vacuum Actuator. When the solenoids are deenergized, the valves vent the Vacuum Actuators, allowing the Vacuum Actuator to return to the vent position determined by a spring. Voltage is supplied to the solenoids through CKT 41 and the HVAC Fuse, which is powered in "RUN."