Crankcase Pressure Sensor
The crankcase pressure sensor measures the vacuum in the positive crankcase ventilation (PCV) system. A change in the PCV system vacuum greater than a calibrated threshold indicates the PCV system is disconnected and will set a DTC. The crankcase pressure sensor is located in the PCV system hose between the intake air system air cleaner and the engine crankcase PCV inlet.
On some vehicles, the CKCP has one digital signal output from the sensor. There is one reference voltage circuit and one signal return circuit for the sensor. For all others, the CKCP has one analog signal output from the sensor. There is one reference voltage circuit and one signal return circuit for the sensor.
Typical Crankcase Pressure Sensor Integrated With Crankcase Ventilation Tube