Great to hear from you, but surprised you're working on the weekend...it's hard being the expert in your field isn't it?
The heatsink was not hot at all, but I don't know how long the unit had by in safety
mode before I found it. It may cooled by then.
I installed a new ecu and it fixed the immediate issue, but I'm worried it will come again. If the circuit overheated on my module, will it reset itself after awhile, or is this one dead now?
I'll try reinstalling the bad (5 blink one) and run the test you gave, but a new module is working fine without the dreaded blinks
This is the second module I replaced in this unit this year. The first had a three blinking issue that turned out to be thermostat related. Unfortunately, I had already swapped out for a new ecu by the time I found the thermostat problem. I guess I may still have the thermostat issue after all.