As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG FIRE WARNING LIGHT ILLUMINATES WHEN POWER WAS REDUCED ON ENG NR 2. OPS AT IDLE AND LIGHT REMAINS OUT. LEAK CHECKED ENG AND FOUND NO BLEED AIR LEAKS. REMOVED AND REPLACED ENG AND FIREWALL FIRE DETECTION ELEMENTS. RAN ENG FOR 5 MINUTES AT POWER, PLUS TAXI TO AND FROM RUNUP AREA. NR 2 FIRE WARNING OPS CHECK GOOD.