Evaporator temperature sensor

Fig 1: Evaporator Temperature Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The evaporator temperature sensor is installed on the heater. Its role is to inform the climate control module (CCM) of the temperature of the refrigerant. The climate control module (CCM) controls the request from the evaporator temperature sensor to activate the air conditioning compressor. The evaporator temperature sensor is directly connected to the climate control module (CCM).

There are diagnostics for the evaporator temperature sensor.