Town Car V8-4.6L VIN W (1997)
Level Control Solenoid Valve: Description and Operation
Vent Solenoid (Level Control)
CAUTION: The vent solenoid valve has an internal diode for electrical noise suppression and therefore is polarity sensitive. Care must be taken not to
switch the battery feed and ground circuits, or component damage will result.
The vent solenoid valve:
^
allows air to escape from the system during venting corrections.
^
is located above the air compressor cylinder head.
^
is attached to the cylinder head casting, which forms an integral valve housing that allows the valve tip to enter the pressurized side of the system.
^
has an O-ring seal which prevents air leakage past the valve tip.
^
opens when the rear is high and the control module determines lowering is required.
^
provides an escape route for pressurized air when opened.
^
the vehicle will not lower unless the air spring solenoid valves are also opened to allow air to leave the rear springs.
^
air is exhausted from the springs and vented through the compressor air drier.
^
is not a serviceable item.
