Ride Height Sensors (Front and Rear)

Ride Height Sensors (Front and Rear)

The Ride height sensors are used to determine the height at both front and rear of the vehicle. They also help to diagnose problems such as Wing Deflection, Chassis Distortion, Bodywork Deflection, Suspension Sag and also any tilt due to sudden load increase.



Wiring Tab

Connections

Ride Height Sensor Front/Rear Input

Select an appropriate input to use for the Ride Height Sensor. An AVI (Analogue Voltage Input) or 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 Ride Height Sensors 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.

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 Ride Height reads below this amount, any Ride Height items on the ESP software will flash Red as a warning.

Warning Maximum

When the Ride Height reads above this amount, any Ride Height items on the ESP software will flash Red as a warning.

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 damage.

Raw Min

When enabled, this allows for the error code C1800 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 C1801 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)

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