The engine radiator cooling system consists of an electric fan operated at two different speeds:

- the first speed is activated at an intial engine coolant temperature level;

- the second speed comes on at a higher temperature levels.

The fan is operated by means of two dedicated relay switches located near the engine compartment junction unit.

The supply line for the fan is protected by two dedicated fuses, also located in the engine compartment junction unit.

Relay switches T06 and T07 of the engine compartment junction unit B001 manage the switching on of the two speed fan N011: the power lines are protected by fuses F06 and F07, also in engine compartment junction unit B001.

Both are energised by an earth control signal coming from the Powertrain Control Module M010.

If the engine coolant reaches an initial temperature level, control unit M010 sends a signal - from pin 13 of connector A - to energize the fan 1st speed relay switch T06, which then sends power supply to fan N011 via additional resistor O010: the fan turns at the first speed (slow).

If the engine coolant reaches a higher temperature level, control unit M010 sends a signal - from pin 12 of connector A - to energize the fan 2nd speed relay switch T07, which then sends power supply to fan N011 directly: the fan turns at the maximum speed.

Engine temperature sensor K036 measures the engine temperature, receives a reference earth from pin 29 of connector B of control unit M010 and sends a signal proportional to the engine coolant temperature to pin 43 of connector B.