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Heating and climate control

In conjunction with the IHKA, the front electronic module (FEM) activates several individual components.

The Front Electronic Module (FEM) checks the auxiliary water pump. The IHKA transmits the command to check the pump to the Front Electronic Module (FEM) via the body controller area network. The rear stratification control detects the driver's choice for the ventilation temperature in the rear passenger compartment. The automatic air recirculation control sensor measures the quality of the fresh air. The automatic air recirculation control sensor supplies a pulse-width-modulated signal on the respective air quality. The automatic air recirculation control sensor is an input signal for the Front Electronic Module (FEM).

The refrigerant pressure sensor measures the refrigerant pressure. The value is mainly required for fan activation, but also for forced switch-off of the air conditioning compressor.

The magnetic clutch disconnects the air conditioning compressor from the engine. To reduce consumption, the IHKA sends a signal to the Front Electronic Module (FEM) when the air conditioning function is not required.

The following components are controlled by the Front Electronic Module (FEM) for heating and air conditioning functions:

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