Scheme 21. Interior heating and ventilation system: 1 - control unit for the heating and ventilation system; 2 - engine control unit; 3.5 - fuse box in the cabin; 4 - electric fan
Scheme 22. Heating system (conditioning) and interior ventilation: 1, 5,10 - fuse block in the cabin; 2,3,4 - electric fan; 6 - relay and fuse block in the engine compartment; 7, 9 - block of auxiliary relays; 8 - diode; 11 - control unit of the air conditioning system; 12 - evaporator safety valve; 13.14 - engine control unit; 15 - injection system relay; 16 - electromagnetic clutch of the air conditioning compressor