R1200GS 2016 model fuel pump short circuit

[BALVIAMBE]

hi,
have bad luck on my bmw r1200gs ( k50 ) 2016 model.
fuel pump short circuit to ground error present now.
bike does not start.
ground wire from ecu is not putting out negative current like it is dead.
i have changed the ecu because of ews got short and waiting for new to come in.
i borrowed friend bike ecu and ews complete set now this is the problem.
i connect direct negative wire from pump to body bike starts.
no dealer on my side have to run 1320 km to fetch him.
ecu model is BMSMP