Finally my ABS light is not lit. I'm quite happy with that, it looks like my efforts did the job, now I only have the 4x4 light on my dash, yay!
There are some doubts though. When I plugged in the repaired unit and started the car, I was extremely happy to see the light not lit. As it happened, it was raining at the time, so I went for a spin to test the ABS on wet roads here. The problem is... I'm not sure if it's working. I can definitely lock the wheels when going under 40 km/h, not sure if always or not as it requires quite a bit of input from my side.
The problem is, as far as I know, ABS light is not part of the Alfa Romeo Control system, so the "Test" button does not light it, and it's not lit before starting the car. Therefore, the light should only be lit when a problem is detected.
Now, is there a way to test if the ABS is working correctly? I've read here that you can manually give power to the pump and see if it's turning and also test the relays if they are clicking. Could you please help me figure out how to do this? I would like to avoid damaging it.