I'm sure it's been asked before but does anyone have any idea what might be up with the aircon in my S70 T5? Green lights come on but there is no noticeable difference when I switch off the AC and just run the normal heater fan with the temp turned right down. There's no drop in engine revs when I switch on the AC. I've gone as far as being told that system doesn't need regassed.
I've checked fuses. if I remove the AC relay what difference should I be looking for if it's a dodgy relay?