Any more to that diagram? Looks like you're missing 23-44 on it.

check the relay and the switch

Do you know where that is located?

>>14101381
Thats your job son. Trace the wire. Try fuse 24 or one of the engine control fuses.

>>14101381
is it a switch inside the car? then the relay will probably be up near the fan.

is it an ecu controlled switch? then the relay will probably be on a relay panel near the ecu.

you will need a wiring diagram to find them

apparently new cars have the relays built into or around the fuse box too, so check there.

>>14101432
thats a sensor and plug diagram.
but, check the battery junction box for relays

u should have a service manual t b h f a m

>>14101335
Is the dashboard temp gauge working correctly?

Could be the coolant temperature sensor; it controls both the dash gauge and the fan.

>>14101335
Relay is built into the "Constant Control Module." A giant 24-pin combination relay on the passenger side inner fender that also controls the A/C clutch, the fuel pump, and both speeds on the dual-speed cooling fan.
Cardone # 73-70012.

I doubt it's the issue; seems like it would be highly unlikely for both the high & low speed relays in the module to go bad at the same time.