3234448 - E5020 ENGINE COOLING - Description (Air Conditioner)

Description

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

They 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 fans are activated by means of special relays located in the engine compartment near the battery.The supply lines for the fans are protected by special maxifuses, whilst the energizing circuit for the relays is protected by the fuse which protects numerous other services controlled by the ignition.The fans therefore only come on when the ignition is switched ON.