Air Conditioner Temperature Sensor

Air Conditioner Temperature Sensor

An Air Conditioner Temperature Sensor allows the ECU to continuously monitor the temperature of the air conditioning system. Temperature sensors are typically two wire sensors; a signal wire that is connected to an AVI, and a signal ground wire.+

Air Conditioner Temperature Sensor Configuration

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


This node sets the minimum value for the number and gauge displays. When the sensor reads below this amount, any number or gauge displays will flash red as a warning of low temperature.


This node allows the enabling of high and low voltage DTCs for the Air Conditioner Temperature sensor.

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


This node allows you to assign the input for the Air Conditioner Temperature sensor. 

Air Conditioner 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 Air Conditioner 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.

    • Related Articles

    • 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 ...
    • Intake Air Temperature Sensor

      An Intake Air Temperature Sensor measures the temperature of the incoming air to the engine. This information is provided to the ECU to determine the correct amount of fuel needed for optimum performance and economy. The information from this sensor ...
    • Air Conditioner Pressure

      An Air Conditioner Pressure Sensor allows the ECU to continuously monitor the pressure of the air conditioning system for safety purposes. An analog Air Conditioner Pressure Sensor is a powered sensor that typically has three wires; a 5V+ power wire, ...
    • Inlet Air Temperature Sensor

      The air temperature sensor is used to compensate for changes in air density due to air temperature. Cold air has a higher density than warm air and therefore requires a greater volume of fuel to maintain the same air/fuel ratio. This effect is most ...
    • Air Conditioner Temperature Sensor

      Wiring Tab Options Input Type Analogue Voltage Analogue Resistance CAN Input Connections Air Con Temperature Input AVI Pull up SPI Sensor Type Pull up Calibration Tab Display Tab Warning Minimum Diagnostics Tab Raw Min Raw Max Wiring Tab Options ...