Oil Pressure Sensor

On Cherokee, oil pressure sensor is located on right side of engine near camshaft position sensor and has a Black 3-pin connector. On Grand Cherokee, oil pressure sensor is located at right rear of engine, above starter motor (4.0L) or on right side of engine on oil filter housing (4.7L). On Wrangler, oil pressure sensor is located on right side of engine near distributor (2.5L) or camshaft position sensor (4.0L) and has a Black 3-pin connector. On all models, the oil pressure sensor is a solid-state sending unit. The sensor uses 3 circuits: 5-volt power supply, sensor ground and sensor signal. The sensor signal circuit varies with engine oil pressure. This signal is transferred "bussed" to the instrument panel on either a CCD or PCI bus circuit (depending on vehicle line). The transferred signal is used to operate oil pressure gauge and CHECK GAUGES light.