Sensor/Switch-Oil Pressure: Operation
WARNING: This page is about a different car, the 2004 Dodge Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The oil pressure sensor uses two circuits. They are:
- A signal to the PCM relating to engine oil pressure
- A sensor ground through the PCM's sensor return
The oil pressure sensor returns a voltage signal back to the PCM relating to engine oil pressure. This signal is then transferred (bussed) to the instrument panel on a CCD bus circuit to operate the oil pressure gauge and the check gauges lamp. Ground for the sensor is provided by the PCM through a low-noise sensor return.