Wiring diagram for the main and additional fans of the engine cooling system with the Sirius D4 ECU: 1 - main relay; 2 - relay and fuse box in the engine compartment; 3 — low speed fan relay; 4 - relay for switching on high speed fans; 5 - main fan electric motor; 6 - fan control relay; 7 — ECU; 8 - refrigerant pressure sensor; 9 - air conditioner switch; 10 - coolant temperature sensor; 11 — additional fan electric motor
(The original article can be found on the resource: «CHEVYMAN.ru»)