As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YOKE MOVES LEFT WHEN AILERON SWITCH MOVED RIGHT (AND VICE VERSA). AILERON TRIM ACTUATOR BORROWED IN LAX. BOX IN LOB. FYI - FOUND TWO ACTUATORS TO BE WIRED BACKWARDS FROM SHOP. UPON REPLACEMENT USE DOUBLE CARE TO INSURE AILERON TRIM MOVES IN CORRECT DIRECTION. REMOVED & REPLACED WITH BORROWED AILERON TRIM ACTUATOR IAW MM. OP CHECK GOOD PER MM. TROUBLESHOOTING INDICATES THAT REMOVED UNIT WIRE BACKWARDS FROM SHOP.