The weirdest thing, ECU ground wire stops working, no fuses popped

[gotsomegetsome]

I go to turn my supra on today and out of no where my SAFC stops working, so my engine idles funkky

tested some wires and found out the ground to the SAFC and ECU are carrying almost no voltage (really only 2 volts maybe 3)

I cant see any wires burnt or cut, o2 sensor wires good, any ideas?

 

[gotsomegetsome]

ok I admit, complete fail, ground on intake mani came loose...