As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 FIRE SWITCH DOES NOT ILLUMINATE DURING FIRE/OVERHEAT TEST. ACFT GROUNDED. FOUND 2 WIRES SEPARATING FROM TERMINAL LUGS ON NR 2 ENGINE CORE FIRE DETECTION HARNESS; MW0325 AND MW0326. REPLACED TERMINAL LUGS. REF AMM 26-11-02. PERFORMED OPS TEST OF THE ENGINE FIRE DETECTION SYS. OPS TEST GOOD. REF AMM 26-11-00. THIS CLEARS MEL 26-2B.