As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT FAILED AUTOPILOT TEST. Y WAS DISPLAYED ON THE PFD AND AP1 AND TRIM ON THE CAD. MOVED PEDALS THROUGH RANGE OF MOTION AND AVIONICS TRIED TO RESET TWICE. REMOVED AND REPLACED YAW TRIM MOTOR IAW AMM 67-14-00, 4-1. TEST FLIGHT C/W, NO FAULTS NOTED REF 05-60-00, 6-12