Coolant Pressure Sensor
A Coolant Pressure Sensor can be used with your Elite ECU for datalogging and for Engine Protection purposes. A Coolant Pressure Sensor is a powered sensor that typically has three wires; a 5V+ power wire, a signal wire to the Elite ECU, and a Signal Ground.
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Page Contents |
Wiring Tab
Connections
Coolant Pressure Input
Select an appropriate input to use for the Coolant Pressure Sensor. An AVI (Analogue Voltage Input) or SPI (Synchronised Pulsed Input) should be used.
Connection Type
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 Coolant 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 below:
*1 – Selecting this yellow Open icon will allow the loading of a pre-configured calibration file.
*2 – Selecting this blue Disk icon will allow the saving of your custom calibration file.
Display Tab
Warning Minimum
When the Coolant Pressure reads below this amount, any coolant pressure items on the ESP software will flash Red as a warning of low coolant pressure.
Warning Maximum
When the Coolant Pressure reads above this amount, any coolant pressure items on the ESP software will flash Red as a warning of high coolant 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 related to the Coolant Pressure Sensor.
Raw Min
When enabled, this allows for the error code P1910 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 P1911 to 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)
Operating Min
When enabled allows detection of Coolant Pressure conditions that could indicate a sudden loss of coolant pressure. All of the following conditions must be reached simultaneously to activate the DTC P0115. If the Engine Protection function is active a DTC Severity level can be selected for this condition if desired. (Default = Disabled)
Minimum Pressure
The DTC will activate if the Coolant Pressure is below this amount and the following conditions are met.
Minimum Running Time
The engine must be running for this amount of time.
Minimum Coolant Temperature
The coolant temperature must be above this amount.
Operating Max
When enabled allows detection of Coolant Pressure conditions that could indicate a sudden spike in coolant pressure. This will activate the DTC P0128. If the Engine Protection function is active a DTC Severity level can be selected for this condition if desired. (Default = Disabled)
Maximum Pressure
The DTC will activate if the Coolant Pressure exceeds this amount.
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