Oil Pressure Sender: Testing and Inspection

1. Verify that engine oil pressure is within specification.
2. Disconnect the oil pressure switch C1000.
3. Measure the resistance between the terminal of the oil pressure switch and ground under the following conditions:

Engine Resistance
Off Less than 5 ohms
Running Greater than 10.000 ohms

4. If the resistances are not as specified, replace the oil pressure switch. Otherwise, return to the Pinpoint Tests.