What was found
WHILE PERFORMING T/C 7827300, FOUND FAULT 77-108582, THE BOTTOM RIGHT EGT SIGNAL IS OUT OF RANGE. ECONOMIC FAULT. ACFT GROUNDED. NR 2 ENGINE BITE SHOWS NO CURRENT FAULTS, NO FAULTS IN HISTORY. TEMPS OUT OF RANGE. WIRING HARNESS RESISTANCE WITHIN LIMITS. CONNECTOR HAD SOME CONTAMINATION, CLEANED. S2 TEMPS SHOW WITHIN LIMITS. RAN ENGINE AT IDLE FOR 5 MINUTES, NO FAULTS DETECTED. EEC GROUND TESTED GOOD. GROUND VERIFICATION TESTS PASSED.