Have Ford Questions? Ask a Mechanic for Answers ASAP
If you are not replacing or repairing the AC compressor and compressor clutch at this time, you will need to unplug the AC compressor clutch and replace the fuse till you are able to repair the AC compressor. The clutch on the compressor is shorting out causing the fuse to blow and the P1633. It is the KAM (Keep Alive Memory) fuse and Fords bright idea was to put the AC compressor clutch and KAM circuits on the same fuse.
It is located on the fan belt pulley side of the compressor. See below.