General Help , ECU issue

[Billy Tanner]

Hello, I just bought a 1990 Eagle Talom AWD 2.0 Turbo M/T with no background. So I started to mess with it to get it running and as I'm doing tests , I have no communication with the ECU, so from there I start testing the MPI Relay for powers and grounds to the ECU with my diagram. Come to find out that 2 of the switched grounds controlled by the ECU for the MPI relay won't switch over with all needed 12V hots present, Is there any other hot wires I'm looking over that the ECU needs to see before turning the relay on? Key note: the one half of the relay does send power to the fuel pump while cranking , the side that powers up the ECU is not while cranking, even with a new MPI Relay. A little help and input would be appreciated before buying a new ECU, Thanks !

 

[joemamma]

check out a couple of these threads http://www.dsmtuners.com/threads/no-power-to-ecu.472197/#post-153354627

http://www.dsmtuners.com/threads/gsx.510183/#post-153632636

and this one for the MPI http://www.dsmtuners.com/threads/mpi-relay.470531/#post-153337797