The Crank Case Pressure Sensor is used to monitor the pressure of the Crankcase, and signal a warning if the pressure falls below the minimum or above the maximum indicated pressure. Overpressure is often due to excess 'blowby', or combustion gasses leaking past the piston rings. The Crank Case Pressure Sensor is a powered sensor that typically has three wires; a 5V+ power wire, a signal wire to the ECU, and a Signal Ground. Care needs to be taken to ensure that no liquids leak into the sensor from the crank case.

Enabling this sensor will allow the Engine Pressure Ratio tuning method to be used.

On this node, the Crank Case Pressure sensor calibration can be loaded or entered manually. If you have purchased a Pressure sensor from Haltech, calibrations can be loaded directly into the calibration table by using the 'Load from File' button. Calibrations can be saved to file by using the 'Save to File' button. 

Display

This node sets the display settings for the Crank Case Pressure channel. 

Warning Maximum - Sets the pressure at which the Crank Case Pressure sensor Number Displays, Gauges and Bars will enter their warning state

Display Minimum - Sets the pressure at which the Crank Case Pressure sensor gauge and bar displays begin. This also sets the minimum pressure allowed to be used in settings and tables.

Display Maximum - Sets the pressure at which the Crank Case Pressure sensor gauge and bar displays end. This also set the maximum pressure allowed to be used in settings and tables.

Diagnostics

This node allows the enabling of high and low voltage DTCs as well as Minimum and Maximum pressure DTCs for the Crank Case Pressure sensor.

A DTC severity can be set for each voltage and pressure, which will trigger an Engine Protection level for the relevant setting.

Wiring

This node allows you to assign the input for the Crank Case Pressure sensor. 

Crank Case Pressure Sensors use an Analog Input. Any available AVI can be used.

It is recommended to disable the Pull Up.