As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT ABORTED TAKEOFF AND RETURNED TO GATE WITH AILERON MIS TRIM MESSAGE. MX PLACED THE AILERON TRIM SYSTEM ON MEL AND THE AIRCRAFT DEPARTED. MX TROUBLESHSOT PER FIM 27-12-00 AND PERFORMED POWER RUNS AND COULD NOT DUPLICATE THE PROBLEM.