The diagnostic test published by forum member
rbm indicates fan failure at pin E when pin E is grounded indicates a faulty temperature switch (relay). If rbm indicates something is amiss, I tend to believe it.
The flickering warning light raises questions about the temperature switch's ability to accurately monitor the coolant/engine temperature and provide accurate data to the FICU also. If the temperature switch or its wiring to other components is faulty, bypassing the switch to run the fan ignores the possibility of other function problems in that switch, including sending consistently correct data to the FICU. Is there a problem in the coolant temperature sensor's circuit, too?
I seem to have lost the plot here.
I'm probably distracted by needing to put my Brick into my winter storage shed tomorrow.
