Open Oil Pressure Indicator Relay Test
- Disconnect oil pressure indicator relay. Place ignition switch in "RUN" position. Using a jumper wire, connect Tan wire to ground. If oil pressure indicator lights, go to next step. If not, check Tan wire for an open circuit. If wire is okay, replace instrument cluster.
- Using jumper wire, connect Tan and Black/White wires. If oil pressure indicator lights, replace oil pressure indicator relay. If not, check Black/White wire for an open circuit. If wire is okay, replace instrument cluster.