The passenger compartment air fan N085 receives a direct battery supply, at pin 2, via the line operated by relay switch T08 (except during starting, "INT/A") and protected by fuse F08 located in the engine compartment junction unit B001.

The speed of N085 fan is regulated through the H081 fan control which, through the O030 regulating resistances, connects to earth the fan motor through different resistance values, thereby regulating the speed.