Expedition 4WD V8-4.6L SOHC VIN W (1999)
Compressor/Pump Relay: Description and Operation
A solid state relay is used in the air suspension system for compressor control. The relay incorporates a custom power Metal Oxide Semi-Conductor
Field Effect Transistor (MOSFET) and ceramic hybrid circuitry. The relay switches high current loads in response to low power signals and is
controlled by the logic of the air suspension control module.
The compressor solid state relay is energized by the air suspension control module to have high current flow from the battery to the compressor motor.
