board schematic of ecu

[MickyDxPress]

I have an eccs issue showing up from my ecu, I have attempted reflowing the solder on the board and it has work for a bit before shorting out again. I would like to test the current to each component on the board but am having a hard time finding any schematics. The ecu is NA Nissan 23710 80F00 A18-F01 g08 6726, would appreciate any tips on how you resolved a similar issue with you ECUs or leads on where to find a breakdown of the chips on the board ECUs.