F23 15A fuse powers the A/C Cutoff relay which triggers the clutch itself.
Perhaps the fuse is bad, or the lead from there to the clutch is faulty/corroded.


Check to make sure you have a connection between F23 and P93(BJB)-C465-Pin3, for one. (this is, of course, after you are positive the clutch is good, and that there are no other more prevalent problems.)
Ray