What was found
FLIGHT CREW REPORTED THAT DURING TAKEOFF ROLL THE NR 2 ENGINE OIL TEMPERATURE INDICATION WENT AMBER XXX. THE FLIGHT CREW ABORTED THE TAKEOFF BELOW 8O KNOTS AND RETURNED TO THE GATE WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE OIL TEMP SENSOR IAW AMM 79-32-15 AND ACCOMPLISHED A SATISFACTORY LEAK & OPERATIONAL CHECK. THE AIRCRAFT LEFT THE GATE AND THE SAME FAULT RETURNED AFTER 5 MINUTES. THE AIRCRAFT RETURNED TO THE GATE AND WAS REMOVED FROM SERVICE. AIRCRAFT GROUNDED. MAINTENANCE DETERMINED THAT THE NR 2 ENGINE EEC WAS DEFECTIVE AND REPLACED IT. A SATSIFACTORY OPS CHECK WAS ACCOMPLISHED.