Temperature sensor

The anti-freeze protection for the system consists of a temperature sensor. This measures the temperature of the airflow which has just passed the evaporator. The sensor has a capacity controlling function. This switches the compressor on/off to prevent condensation freezing. The following modifications have been introduced.

• The sensor is located downstream of the evaporator. This makes it easier to install/replace the component.
• The sensor transmits a signal to the climate control system. The climate control system transmits the signal on to the engine control module (ECM). The ECM regulates the switching on/off for the air conditioning relay. The A/C relay switches off the compressor (at 4.0 - 6.9°C) and on (at 4.8 - 7.5°C). The control module can delay the engagement or temporarily disconnect the compressor under full acceleration.