Originally Posted by
GVK.
Have you tried a gem self test to see if the gem is recognizing the switch on/off?
I've not tried this myself and not sure if it's possible. From the op it seems that even though the GEM is being switched, that the relay isn't
https://www.youtube.com/watch?v=Xoa3skTx1CI
I have IDS so will do that this evening but I think that it does as I seem to recall something when doing some other checks prior.
i have +4.5v from pin 9 (if I remember correctly) to pin 2 of the aircon relay instead of -ve so May have to depin the PCM and run a test lead to disprove a short in the wiring loom as well.