Well, the fans are wired together, so you have a basic problem with one of them.
They are supposed to run at low speed with the a/c and high speed at 105C coolant temp.
There are 2 easy test for circuit verification..
Key ON..
Jumper pigtail wires at the pressure switch at the a/c drier..that should give you LOW fans..

Pull connector off blu 2 wire sensor at thermo housing..that should give you HIGH fans

Report findings

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A Dalton