Oil Pressure And Temperature Sensor
The oil pressure and temperature sensor is located in the oil filter and housing assembly located at the front right on the engine. The sensor is located in a threaded port in the oil filter housing assembly.
The oil pressure and temperature sensor has a 3 pin connector. A pin supplies a 5V reference voltage from the Powertrain Control Module (PCM), the second pin is a ground connection. The third pin provides an oil pressure and temperature output to the PCM.
The sensor provides a Pulse Width Modulation (PWM) signal that contains information about the self-diagnosis of the sensor, pressure and temperature. The pressure is measured using a piezo-resistive pressure cell and the temperature is measured using an integrated diode.
The sensor measures pressure between 0.5 bar (7.25 psi) to 10.5 bar (152.28 psi) and temperature between -40°C (-40°F) to +160°C (320°F).
The PCM outputs the engine oil pressure state on the FlexRay bus for use by the Body Control Module/Gateway Module (BCM/GWM). The BCM/GWM provides the oil pressure value for the Instrument Cluster (IC) on the High Speed (HS) Controller Area Network (CAN) comfort systems bus. The signal is used by the IC to provide oil pressure information to the driver.
In the event of oil pressure falling below the operating threshold of the sensor:
- The PCM sends a message to display a low oil pressure warning in the message center.
- Illuminate the oil pressure warning indicator in the IC.