hi
I am not sure this is the right place to ask.
if not pleas point me in the right direction


I have a mss54hp ecu that som times causes issues with power draining.
the problem it happens just once a week or so.



i have isolated where the issue is, The DME relay Stays on because the ecu holds the relay to ground. if i break the circuit and put it back its okay.


(i have testet with out the ignition connector on the ignition barrel. still the same problem.)
(And the only things having power is the parts that get power from the DME relay)
My thought is the ecu is the problem.


but how to know for sure the Ecu is broken and not a wiring or software issue?


Would really like a tip on what to do next?