What was found
SMF FLIGHT NR 2410: POWER PLANT MESSAGE ON ED AFTER PROPS CAME OUT OF FEATHER. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REQUESTED REMOVAL AND REPLACEMENT OF NR 2 PECU (P/N 699018002, S/N 1046) IAW AMM TASK 61-20-36-000-801 AND 61-20-36-400-801. OPS TEST FAILED. DID NOT FIX PROBLEM. AFTER TROUBLE SHOOTING, SWAPPED THE TORQUE SENSOR 'A' CONNECTOR P11 FROM NR 1 TO NR 2 AND VICE VERSA. PROBLEM FOLLOWED FROM NR 2 ENGINE TO NR 1 ENGINE. SWAPPED TORQUE SENSORS BACK TO ORIGINAL POSITIONS IAW TASKS 77-11-06-000-801 AND 77-11-06-400-801. REMOVED AND REPLACED NR 2 ENGINE TORQUE SENSOR 'A' CONNECTOR P11 WITH NEW FROM STOCK. FAULT CODE CLEARED. ALL OPS CHECKS COMPLETED FOR THE NR 1 AND NR 2 ENGINES. FADEC AND P