need help asap sr ecu not sending ground to fuel pump

[1bad91s13]

Ok so I've been trying to figure this out for 2 days now. I got my sr in and ready to start but fuel pump wasn't coming on. If I jump the relay the pump comes on and the car runs fine. But with the relay in its not getting the ground signal from the ecu. I tested from the relay all the way to pin 104 on the ecu harness with a multi tester and the line is good with no breaks. If I test pin 104 for ground right after the key is cycled it doesn't see any ground. I've come to the conclusion that its the ecu. But when I open it up I don't see any burnt components or anything. Anyone have any ideas? Bad solder joint? anyone know how to get the schematic for the ecu so I can test the resistors? Please help I really want to drive my car and don't want to buy a new ecu if I don't have to.

[compactfean]

The schematic for an ecu will not be able to be found. Try a different ecu to prove its an ecu issue. Otherwise put your fuel pump relay ground on a toggle. I've heard of some of the ecu companies like jwt, E-mance, enthalpy being able to fix mafs circuits in the ecu but those guys are super savy. With that stuff and that's kind off a "tricks of the trade" kind of info.

[1bad91s13]

ya I've thought of the toggle switch thing. guess it wouldn't hurt kind of like an additional anti theft device lol. I'm currently trying to find a different ecu