What was found
FLT#115, JFK-SFO. (ETOPS) 'ENG 2 FIRE LOOP B FAULT ECAM MSG DURING FINAL APPROACH; ACCOMPLISHED T/S PER TSM: 26-12-00-810-861-A AND L/P 4079748-1 AS PRECAUTIONARY, REPLACED ENG 2 LOOP B HARNESS 4166KS. DURING OPS TEST WHILE SHAKING LOOP B AGB DETECTOR, LOOP B ECAM FAULT CAME ON AND STAYED ON. REPLACED LOOP B DETECTOR (4002WD2) PER AMM 26-12-17. ALSO FOUND LOOP B PYLON HARNESS TERMINAL 41WD2 VERY LOOSE, TIGHTENED TERMINAL. NO ECAM MESSAGE NOW, EVEN WHEN SHAKING HARNESS. OPS CHECKS GOOD, PER AMM 26-12-00. MDDR CLEARED, MX 4 UPD, PLACARD REMOVED.