Automatic Temperature Control Solenoid and Manifold

The automatic temperature control solenoid and manifold uses 5 internal solenoid-type valves to distribute vacuum to the vacuum control motors and heater control valve based on the HVAC module settings. Manifold vacuum is always available at the automatic temperature control solenoid and manifold from the vacuum reservoir when the engine is running. The 4 vacuum control motors and the heater control valve vacuum lines are each connected to a separate internal solenoid. The HVAC module will apply voltage to the desired solenoids to open the solenoid to the manifold vacuum supply and complete the vacuum circuit to the desired component.