01 Acura TL A/C with CD based Nav system is not working. After 2-3 attempts at pressing "A/C" button on Nav unit, screen displays the A/C controls.
When selecting any A/C related ICON nothing happens, no blower speeds, no compressor clutch that I can hear. I think I can hear a slight beep from unit when an ICON pressed.
p.s.198,500 miles
Please advise this is not a big bucks "black box" problem.
Thanks