Oil Pressure Gauge
- With ignition on, disconnect wire at sending unit. Gauge should read 60 psi. Ground sending unit wire. Gauge should read 0 psi. If gauge read correct psi, replace sending unit. If gauge did not read correct psi, remove gauge and check wiring from gauge connector to sending unit. Repair as necessary.
- If wiring is okay, connect 12 volts to 12 volt terminal on gauge. Ground other terminal. If gauge does not read 60 psi, replace gauge. If gauge reads 60 psi, connect a jumper wire from sending unit terminal on gauge to ground terminal.
- If gauge does not read 0 psi, replace gauge. If gauge reads 0 psi, check circuit board and gauge connectors for open circuit.