As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT# 1190, SAN-JFK. (ETOPS) "ENG 2 FIRE LOOP A FAULT ( ENGINE FIRE DETECTION SYSTEMS1)LOOP A )" ; ACCOMPLISHED T/C TSI-A321NEO-ENG2 FIRE LOOP A FAULT, DURING T/S FOUND HARNESS 452VC2 PIN 1 AND 2 SHORTED AND GREEN WIRE INSULATION CHAFE TO BARE WIRE. R/R HARNESS 452VC2 PER AMM 26-12-16. OPS TEST GOOD PER AMM 26-12-00. (SUPPLEMENTAL INFORMATION ADDED)