I have a 93 Voyager with 3.3 engine. Within the past couple of weeks
the radiator fan has quit turning on, and the air conditioner quit
working. They both quit at the same time as far as I know. The AC is
still fully charged, and all of the dashboard controls work including
the blower, etc. It's just that the clutch never engages.

I got the trouble codes by turning the key, and it gave me code 33,
which according to the manual is a short or open condition in the AC
compressor clutch relay.

Does this relay control both the AC clutch and the radiator fan? There
is only one fan, rather than one for the radiator and one for the AC.
So it makes sense in a way that a single fault could disable both the
radiator fan and the AC.

Looking at the wiring diagram I also see a "high speed fan switch" and a
"low speed fan switch". The fan never turns on, so I'm thinking that
the problem is not likely one of these, but I could be wrong of course.

Is there a common failure that occurs with these vehicles? Any advice
on where to find the switches and relay for this system? Unfortunately
the fine folks at Chrysler decided not to label any of thes switches or
relays on the vehicle for some reason. I'm sure they're having a good
laugh about it now...