Oil Pressure Switch: Operation
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, and 2004 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
The oil pressure switch provides a ground for the instrument cluster low oil pressure indicator light. The switch receives oil pressure input from the engine main oil gallery. When engine oil pressure is greater than 27.5 kPa (4 psi), the switch contacts open, providing a open circuit to the low pressure indicator light. For wiring circuits and diagnostic information, (Refer to SYSTEM WIRING DIAGRAMS (Concorde) or SYSTEM WIRING DIAGRAMS (Intrepid) ).