I may have to give that a try actually. Is there by chance a how to on it?
Remove the EBCM,
remove the small bolts and you might have to pry the edges to get the case apart as there is some sealer in there
the daughter board is small and there is a small relay on bottom side
Look closely at the solder joints
, most times it is the ones for the legs of the relay
see if the solder joints look cracked
Relay being small puts out heat from current flow to soldered legs
Either reflow the joints with solder iron or
Best is also replace the small relay, about $2, may take less then 1 hour to replace relay and I'd reflow all solder joints.
This is all some shop does and charges big profits doing it
Do a search on this forum to find past posts I have done that has the part number, common relay most electronic online parts sell
If you cannot find part # or a place that sells them let me know and I can locate that info