Component Tests and General Diagnostics
SENSOR TESTIf is best to conduct test with sensor in oil pan with hot oil to ensure oil properly drains from sensor. If removed from pan, sensor must first be submerged in warm oil to ensure proper positioning of float before testing. The sensor must be held horizontally during bench testing to ensure float remains correctly positioned.
Connect positive lead of digital volt/ohmmeter to sensor terminal and negative lead to sensor housing. With sensor submerged in oil (engine full), meter should read Open. Resistance should be greater than 100,000 ohms. With sensor out of oil (oil drained), resistance should be less than 1000 ohms.