Oil Pressure Switch Test
WARNING: This page is about a different car, the 1991 Honda Civic and 1990 Honda Civic. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the YEL/RED wire from the oil pressure switch. See Fig 1 .
- There should be continuity between the positive terminal and the engine ground with the engine stopped. There should be no continuity when the engine runs.
- If the switch fails to operate, check the engine oil level, then inspect the oil pump and pressure if the oil level is correct.