2003 Air Conditioning Clutch

My 2003 with 150K miles has had the blinking A/C light problem for the past year or so. I've read many posts on the subject, including Station2Station's A/C Diagnosis and Replacement Blog (which is awesome, thanks). I ran the diagnosis, got the 22 code, so it seems the clutch needs to be adjusted or replaced. One difference with my situation from everything I've read: if I leave the A/C on Max with the fan on at Max, the A/C works fine (for at least as long as my daily commute, about 40 mins). Once I turn the fan down or turn Max off, the lights start blinking within 5-10 minutes and the A/C doesn't work. Is this consistent with the clutch problem? The Dealer wants $150 just to diagnosis it, and my normal mechanic doesn't really know what to do with it... I won't be attempting the repair myself, but want to give my mechanic as much info as possible (unless, of course, there's somebody on this forum in the western Philly suburbs who would like to take this on -- let me know if so). Thanks!

 

Good deal, thanks for the responses.

 

thanks Lech, I appreciate the advice.