Circuit Description The oil pressure switch is used by the electronic control module (ECM) to detect the presence of lubricating oil pressure.
Component Location The oil pressure switch is located on the engine block below the ECM.
Shop Talk 1) Verify, with the driver, the engine speed at which the fault occurs. If the engine is being operated at too low of a speed, the oil pressure can drop below the engine protection limits. 2) Connect a manual gauge to monitor actual oil pressure of the engine. 3) Engines in the field can have had a jumper harness kit installed which connects the oil pressure switch to pin K in the 23-pin OEM connector or cavity 8 in the Ford OEM connector. 4) The fault will trigger if lubricating oil pressure drops below 41 kPa [6 psi] for 30 seconds.
Engine Protection Shutdown will be activated after an additional 30 seconds if the feature is enabled in the ECM.