What was found
FIRE LOOP B FAULT DISPLAYED ON UPPER ECAM SCREEN.-ENGINE 2. ENGINE 2 FIRE LOOP B FAIL ECAM MSG PROG TEXT: ACCOMPLISH CHRONIC REVIEW. NR 2 FDU LAST LEG REPORT. (CHECK ENGINE 2 FIRE LOOP B 26-12-15). FLIGHT CREW REPORTS MESSAGE WAS INTERMITTENT. UPON ON ARRIVAL, NO ECAM ENG 2 FIRE LOOP B MSG DISPLAYED T-S REF TSM 26-12-00 AND AMM 26-12-00 SUSPECT FDU 2 PCN 565-0012. SWAPPED PINS F AND H OF TERMINAL BLOCK 450VT SECTION 1 WITH PINS B AND G OF SECTION 2, FAN DETECT, REQUEST CREW COMMENTS. NO MESSAGE NO RELATED ITEM ON POST FLIGHT REPORTS. TEST OK IN MCDU.