What was found
3 MINUTES INTO THE FLIGHT, BOTH ENG MANUAL 2 AND FADEC FAIL 2 CAUTION ILLUMINATED. WHEN THE CAUTIONS ILLUMINATED THERE WAS NO INDICATION OF A FAIL ON THE FLI, TEMPERATURES, OR PRESSURES. FOLLOWING ACTIONS WERE TO REFER TO SECTION 3-27 OF THE FLIGHT MANUAL FOR FADEC FAIL, AT THIS TIME BOTH ENGINES TQ'S WERE AT 46%, USING SMALL COLLECTIVE MOVEMENTS THE PILOT WAS ABLE TO IDENTIFY WHICH ENGINE WAS AFFECTED. USING THE TWIST GRIP FOR THE #2 ENGINE, ROLLED UNTIL CONTROL WAS ESTABLISHED THAN MAINTAINED AT 80% +-2% PER THE EMERGENCY PROCEDURES OF THE RFM. PILOT PERFORMED A RUN-ON LANDING SATISFACTORILY WITH NO OTHER ISSUES AND AIRCRAFT WAS SHUT DOWN AND BROUGHT INTO THE HANGAR FOR INSPECTION AND TROUBLESHOOTING.