I just recently started working on hino trucks and I have a 338 with abs light on. Self check will not work and computer says only partly talking. All sensors oahm out good any suggestions. Also have put in a new Wabco ecm box still the same thing
What year is this truck? On some of them, water can get into the firewall-mounted junction box and cause havoc. There's also a connector separating the frame harness from the main harness and very occasionally water might get into that one. You may see codes pertaining to one or both of the rear sensors if that's the case.
What are you using to pull codes? Meritor Wabco Toolbox software works the best, IMO.