What was found
DURING TAKEOFF ROLL, ENGINE LIGHT CAME ON AT F/O ANNUNCIATOR PANEL AND EEC ALTERNATE LIGHT CAME ON AT OVERHEAD PANEL. ABORTED TAKEOFF AND RETURNED TO GATE WITHOUT INCIDENT. CHECKED BOTH ENGINES FOR FAULTS AND RECEIVED FAULT CODES 73-31671 AND 73-31672 AT NR 1 AND NR 2 ENGINES. PERFORMED ENGINE RUN AND COMPLIED WITH FIM TASK 73-28-TASK 807. NO FAULTS PRESENT AT THIS TIME. COMPLIED WITH SECOND ETOPS PDSC WITH NO DEFECTS FOUND AT THIS TIME. AIRCRAFT RETURNED TO REVENUE SERVICE IN SPM.