Is fuse #12 blown, in the main dash fuse/relay panel?

Since you say that the evap fans don't even turn on it seems the problem
is in the dash end of the A/C system, very near to the power feed from
fuse #12. Speeds 1 and 2 of the evap fan should work with key on and the
temp knob turned on at all. The temp knob would have to then be turned
colder before it would signal the rear A/C relay to enable the
compressor clutch.

So, is the dash AC on/off switch getting power at all, from fuse #12?

Mark

John Rodgers wrote:
> Need to trouble shoot this AC system and don't know quite where to begin.

> Troubles: With engine off, ignition on but not in start mode, Fan didn't
> kick on when the AC switch was turned on.
> Compressor clutch did not engage.
> ..........
> Inoperative:
> AC condenser fan
> AC evaporator blower
> Compressor clutch
> Compressor?
>
> Where to start? This thing has a lot of pieces.
>
> Thanks,
>
> John
>