Oil Pressure Sender: Testing and Inspection

INSPECT ENGINE OIL LEVEL WARNING SWITCH CONTINUITY




a. Check that there is continuity between terminal with the switch in each position.




b. Heat the switch to above 60 °C (140 °F) in an oil bath
c. Check that there is continuity between terminals with the switch ON (float up).
d. Check that there is no continuity between terminals with the switch OFF (float down).
If operation is not as specified, replace the switch.