Power Steering Pressure Sensor
The Power Steering Pressure Sensor is used by the Haltech ECU to monitor the pressure, and to perform tasks such as idle up when the pressure increases. The pressure sensor will also highlight any diagnostics in the ESP Software if the pressure exceeds the indicated max or falls below the indicated minimum.
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Wiring Tab
Connections
Power Steering Pressure Input
Select an appropriate input to use for the Power steering pressure sensor. An AVI (Analogue Voltage Input) or an SPI (Synchronised Pulsed Input) should be used.
AVI
An AVI (Analogue Voltage Input) is suggested.
Pull up
Enables a 1k pull up resistor to 5V.
Typically the pull up should be enabled with any two-wire temperature sensor, and disabled for sensors with their own voltage supply. If the sensor is being shared with another ECU, such as with a piggyback installation with an OEM ECU, then the other ECU will generally include a necessary pull up and this setting should be set to Disabled.
SPI
An SPI (Synchronised Pulsed Input) can be used where there are no available AVIs.
Sensor Type
Set to Hall Effect for all analogue inputs
Pull up
Enables a weak 10k pull up resistor to 5V.
Typically the pull up should be enabled with any two-wire temperature sensor, and disabled for sensors with their own voltage supply. If the sensor is being shared with another ECU, such as with a piggyback installation with an OEM ECU, then the other ECU will generally include a necessary pull up and this setting should be set to Disabled.
Calibration Tab
This allows calibrations for a Power Steering Pressure Sensor to be loaded or saved. A number of calibrations come pre-installed with the ESP Software package. If your sensor is not listed, a custom calibration can be created with the data provided by the sensor manufacturer. The default calibration will be for the Haltech 150psi Pressure Sensor.
From the image above:
1 – Selecting the yellow Open icon on the top left will allow the loading of a pre-configured calibration file.
2 – Selecting the blue Disk icon next to the open icon will allow the saving of your custom calibration file.
Display Tab
Warning Minimum
When the Power Steering Pressure Sensor reads below this amount, any power steering pressure items on the ESP software will flash Red as a warning of low pressure.
Warning Maximum
When the Power Steering Pressure Sensor reads above this amount, any power steering pressure items on the ESP software will flash Red as a warning of high pressure.
Diagnostics Tab
The settings in this tab allow limits to be set for the detection of either fault conditions, or conditions that could be considered to cause engine damage.
Raw Min
When enabled, this allows for the error code P0552 to be set when the voltage is below the set amount. This is used to detect a short or disconnection with the wiring. If the Engine Protection function is active a DTC Severity level can be selected for this condition if desired. (Default = Disabled)
Raw Max
When enabled, this allows for the error code P0553to be set when the voltage is above the set amount. This is used to detect a short or disconnection with the wiring. If the Engine Protection function is active a DTC Severity level can be selected for this condition if desired. (Default = Disabled)
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