I cant tell everything I know about a certain brand of abs module cause I aint supposed to know some of it.
There are very very small 24K gold wires placed with a robotic wire bonder. If this is where the fault is, and most of the time it is, a hand held soldering iron aint gonna fix it. If you open it, look for what looks a lot like a mouse turd in the gelcoat. There's your sign.
