Low pressure
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- in this mode a solenoid located in the front cover is energized. This solenoid allows oil pressure to be applied to a secondary pump port. This secondary force, further compresses the pump spring thereby allowing the pump to regulate to a secondary lower pressure setting. The pump becomes more efficient because it produces less flow and works against an even lower resistance.