Remove the ECM and open the cover. Look at the capacitors on the circuit board and if you find any that is leaking, get them replaced and the ECM might work. If you have voltage to the ECM and the grounding circuit is good, there is nothing much you can do even if you check through.
The grounding connection at the thermostat housing has to be good for the ECM to work correctly and if any work was done there, recheck the grounding point.
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Wednesday, October 19th, 2011 AT 12:25 PM