Overheats relaced all sensors tested fan the fan will run but doesn't. on 1994 Chevrolet Beretta

The water pump seems fine so we stated with sensors and found that the fan never comes on but tested it and the fan itself works. We were told it was a relay but can't find the relay that goes to it. There is no diagrams or anything and it's not a fuse.

Asked by for the 1994 Chevrolet Beretta
try checking your thermostat it tells the car to turn the fan on