Fuses can be a problem...
The fan control module is built into the big fan... if your small fan is non-operational, it needs either the brushes fixed, the bearings oiled, or the fan replaced.
The little one is a bit of a problem to diagnose. The whole fan support needs to be removed. Run a jumper wire to the leads on the small fan. If it does not run, either the brushes are sticking or the bearings are fried. If the brush support is not totally melted (why they make them out of plastic is beyond me...), then you can use graphite and a bit of whittling with a knife to fix the brushes until the slide freely. Otherwise, replace the fan.
The fuse panels under the hood and in the left side of the dash by the driver's door are both problems. Corrosion and burnt out connectors. Spray something like WD-40 or CRC over the panel and check each fuse connection for arcing, burnt spots or corrosion. The 40amp fuse that is in the front passenger side of the power fuse block is very prone to melting. Resistance from the spade in the fuse box will heat the fuse until it melts the fusible link.
Other than that, there are several other things that will kill the a/c. It's a very detailed study.