2753540 - E5020 ENGINE COOLING - Functional description (Air Conditioner)
Functional description
The engine control unit M010 receives signals from the coolant temperature sensor K036 and the linear pressure sensor K120. In accordance with these data, the engine control unit M010 activates the first or second speed of the fan N011.Activation of first speed:
- from pin 8 connector B, the engine control unit, via a negative signal, energises the relay T06;
- the direct battery supply supplied by the relay T06 passes through the resistor O010 and reaches the fan N011.
Activation of second speed:
- from pin 18, connector B, the engine control unit, via a negative signal, energises the relay T07;
- the direct battery supply provided by the relay T07 reaches the fan N011 directly.