Ducato 250 year 2017

A month ago had new double (engine radiator) fan with new relay and new resistor, all included,
now throws P0482-13 Fan 3 - open circuit.

Fan 3 is fan 1 with other speed (different voltage)

Via diagnostic if I activate the single fan everyone works, I just can't tell if fan 3 is faster or slower compared to fan1.
Fan speed is not an information you could get from diagnostic.

Will check for fuses, cables, etc...