223002678 - E5020 ENGINE COOLING - DESCRIPTION (BIPOWER)

Description

The engine radiator and condenser cooling system consists of a fan, which, on versions with air conditiong, operates at two different speeds:

• 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 threshold.

The operation of the fan is achieved by means of two special relays located in the junction unit.The fan supply line and the relay energizing circuit are protected by a special fuse located in the above mentioned junction unit which protects numerous other services controlled by the ignition.The fans therefore only come on when the ignition is switched ON.