I have been working on a T4 that is intermittently giving me a fault 960.

Fault 960 = NTSD / ETSL failed to report. (Basically. Going off of memory after leaving job.) Pretty much says that my EDET and ECNT failed to activate in a terminal landing.

It only has this issue at that top terminal landing. Quick rundown is that I have swapped PMI board, DSP card and replaced all four modules for that ckt. I have also replaced the read head assembly. Came with all new sensors. My last ditch effort today was to find t-cable spares and swap those. I still got the fault. Anybody have any ideas. Thanks for your help