my abs is not working, error 53-1, it says abs pump relay but i don't know how to test relays, and people say it's usually the electronic box that does bad,
so i'm trying to replace the control module but i can't find it, where is it located?

also can it just be swapped out with another one or does it need special programming to work? i heard rumors like that but no info on it,

thanks for your help