Oil Pressure Sensor Explanation

OIL PRESSURE SENSOR DESCRIPTION
The oil pressure sensor (Fig 1) #2 is located on the oil filter housing. The oil pressure sensor is a three wire sensor with a tapered threaded sensor port. The sensor port is mounted to the oil filter housing through an access hole. A thread lock patch seals the oil pressure sensor to the oil filter housing.

OIL PRESSURE SENSOR OPERATION
The oil pressure sensor (Fig 2) is a silicon based sensing unit that measures the pressure of the engine oil. The Powertrain Control Module (PCM) supplies a 5 volt reference and a ground to the sensor. The input to the PCM occurs on the signal return circuit. The oil pressure sensor is a linear sensor; as pressure changes, voltage changes proportionately and returns a voltage signal to the PCM that reflects oil pressure. The zero pressure reading is 0.5 volt and full scale is 4.5 volt.

OIL PRESSURE SENSOR REMOVAL
1. Remove the upper intake manifold and lower intake manifold. Refer to MANIFOLD, INTAKE, REMOVAL
2. Disconnect the oil pressure sensor wire harness connector (Fig 3) #2.
3. Remove the oil pressure sensor (Fig 3) #1 from the oil filter housing.

OIL PRESSURE SENSOR INSTALLATION
1. Install the oil pressure sensor (Fig 3) #1 and tighten to the proper specification. Refer to TORQUE SPECIFICATIONS
2. Connect the oil pressure sensor wire harness connector (Fig 3) #2.
3. Install the upper and lower intake manifolds. Refer to MANIFOLD, INTAKE, INSTALLATION