Re: EVIC Problem
I won't expect G301 to be the problem, since it is the ground for quite some other components, ie some of the power seat functions, left rear lock motor and window and adjustable pedals. This ground point is probably a stud where several wires connect togeter. The two components which share the exact same ground wire on this stud are the rain sensor and if installed, the intrusion transceiver module. So if the problem happens again, switch the wipers in intermittent and see if they work. Even with the rain sensing module inoperative the wipers will do one swipe and then wait for a wipe signal from the rain sensing module. So if its not raining, throw some water at the rain sensor area to test.
But since the problem is temperature related, i wonder if there is not a problem with the EVIC circuit board, maybe a loose solder or cracked board, which problem only appears due to the thermal properties of the board