Oil Pressure Sender: Testing and Inspection

1. Disconnect oil pressure switch connector.
2. Measure resistance between oil pressure switch terminal and ground.
3. Resistance should be as follows:
a. With engine OFF, resistance should be less than five ohms.
b. With engine running, resistance should be more than 10,000 ohms.
4. If resistance is not as specified, replace switch. If resistance is within specifications, refer to pinpoint test.