2014 Terrastar electrical faults

Sounds like a datalink issue. Sadly, there really isn't much I can tell you without hooking up to it. As a tech, we are really limited to what we can do without seeing what codes are getting logged and whatnot. I do know of the erroneous fault codes that are getting logged by the engine only, nothing else. These are also not causing ABS or Trans lights to come on. Did they happen to mention which wires that they fixed? I am suspecting an 1939 datalink problem.

 

Any ABS problem and TCU throws J1939 data fault code) really transmission unit used VSS and ABS speed data

 

I work for an FD that just received a new 2014 Terrastar with the same problem that you described. After weeks of troubleshooting International believes they have found the problem. The squad manufacturer moved the vehicle's batteries from under the cab to a small compartment on the squad module itself in order to give us easier access to the batteries. According to International this additional distance of the cables causes a minute voltage drop which they say is the possible cause of the problem. This is early on and we haven't heard back from International yet while they do some testing.

 

There are Pro Stars that are having the same problem too. It is tripping the ABS/Traction control lights and says its out of calibration. When re-calibrated, it will do the same thing intermittently. A code pops up as data link error or something.

 

Has anyone been able to find what the cause of this issue is. I have the same problem and my truck has been in a repair shop for two weeks now and he can find the issue! Please help

 

The datalink splices have been known to fail inside the wiring harness. Running new datalink overlays or locating the "Y" splices and redoing them corrects issues like this.