What was found
CREW DECLARED AN EMERGENCY AND AIR RETURN TO DEPARTURE. AFTER TAKEOFF CREW RECEIVED A FUEL FEED 2 FAULT AND THEN A ENG 2 FUEL LOW PRESSURE CAS MESSAGE. QRH FOLLOWED. MESSAGES NOT CLEARED AND EJECTOR PUMP SHOWED OFF. AC PUMP 2 SHOWED GREEN BUT FUEL LINES WERE WHITE. IAW FAULT CODE 28201252 FOLLOWED FIM TASK 28-21-00-810-815-A. OPS CHECKED RT ENG EJECTOR PUMP IAW AMM 28-21-13-710-801-A, CHECKED GOOD WITH NO FAULTS. REPLACED RT ENGINE LOW PRESSURE SWITCH IAW MM 71-00-73-003 AND RAN ENG 2 IAW 71-00-910-801-A FOR APPROX 22 MIN AT VARIOUS POWER SETTINGS WITH NO FAULTS AND NO LEAKS NOTED.