What was found
AT FL 330 AUTO THROTTLE DISCONNECTED, FOLLOWED BY A RT ENG PRI CONT, RT ENG REV CONT, AND R ENG SEC CONTROL STATUS MESSAGES. FOLLOWED QRH AND CREW PERFORMED A DIVERSION DUE TO RIGHT ENGINE UNRESPONSIVE. MTC T/S AND FOUND NUMEROUS EEC RELATED FAILURE MESSAGES. EEC REPLACED AND ENGINE TESTS PERFORMED. REMOVED AND REINSTALLED THE RT PMA AND INSPECTED IAW AMM 73-21. NO DEFECTS NOTED. PERFORMED HIGH POWER RUN NO MESSAGES.