S90 L6-2.9L VIN 96 B6304S (1998)
Vacuum Solenoid Valve HVAC: Description and Operation
NOTE: The vacuum hoses cannot be removed individually.
Vacuum Control Solenoid - (Solenoid Valves):
The solenoid valves open and close the vacuum lines from the vacuum bells used to control the shutters, in response to electrical signals from the
microprocessor.
The few vacuum hoses which are installed are securely clamped, eliminating the risks of interchanging and pinching the hoses.