air con clutch engaged when switch is off,air con gives out cold air,i pulled out the small aircon relay clutch disengages ,suspected sticking relay?feeds at relay terminal stay the same with relay out,12v at 1 small terminal and 12 at 1 large (2 small 2 large are on the relay),what triggers this relay?is it the pcm?anyway after removing and refitting relay trying to establish how it works the air con now switches off ok,any ideas ?obviously as it ok now I will stop fiddling!