Up to VIN S5219999

Oil Pressure Warning-Circuit Testing:

1. Turn the ignition switch to ON.
2. Disconnect the connector from the oil pressure switch.
3. Start the engine and connect the YEL/RED wire to ground.
4. Check that the "OIL" warning lamp illuminates. If it does not, check bulb and wiring harness for an open. If bulb and wiring are OK, replace oil pressure switch.