Ambient Air Temperature Sensor

Ambient Air Temperature Sensor

An Ambient Air Temperature Sensor measures the temperature of the air outside of the vehicle. Temperature sensors are typically two-wire sensors; a signal wire that is connected to an AVI, and a signal ground wire.



On this node, the Ambient Air Temperature sensor calibration can be loaded or entered manually. If you have purchased a air temp 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. 

Diagnostics



This node allows the enabling of high and low voltage DTCs as well as Minimum and Maximum temperature DTCs for the Ambient Air Temperature sensor.

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

Wiring



This node allows you to assign the input for the Ambient Air Temperature Sensor. 

Air Temperature sensors use an Analog Input. Any available AVI can be used if the sensor is wired directly to the ECU. 

Setting the Input Type allows the ECU to accept a voltage calibrated sensor or a resistance calibrated sensor. Useful if you don't have a voltage calibration, or you wish to enter your calibration data in as resistance values. This will change the calibration screen found in the main Ambient Air Temperature sensor node.
A K-Type Thermocouple input can also be used.

It is recommended to enable the Pull Up when using a 2-wire temperature sensor.

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