Oil Pressure Gauge

The oil pressure analog gauge in the instrument cluster is operated directly by the oil pressure sensor circuit with the ignition switch in RUN or START. As the engine oil pressure changes, the resistance of the sensor changes and the current flow in the oil pressure gauge causes the needle to move in order to appropriately display the engine oil pressure. A sensor resistance of 1 ohms will display as 0 PSI (0 kPa) and a resistance of 88 ohms will display as 80 PSI (550 kPa). The instrument cluster also monitors the oil pressure sensor circuit and interprets the current flow in this circuit in order to decide when engine oil pressure is too low and the Check Eng Oil Pressure message will be displayed in the message center.