3309795 - E5020 ENGINE COOLING - Description

Description

The engine radiator and air conditioner condenser cooling system consists of two fans connected in parallel.

These are operated together at two different speeds by the same software.

• the first speed is activated at a first coolant temperature level or at a certain air conditioner coolant pressure.
• the second speed cuts in at a higher temperature or pressure threshold.

The operation of the fans is achieved by means of special relays.The fan power supply lines are protected by special maxifuses.Both fuses and relays are housed in a relay carrier control unit located on the left side of the engine bay.