As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT TOP OF DESCENT NR 2 ENGINE FIRE WARNING CAME ON. WHEN THROTTLE WAS RETARDED TO IDLE LIGHT WENT OUT. SYSTEM TESTED OK. LEFT ENGINE AT IDLE. REPAIRED BROKEN WIRE DOING FALSE CONTACT, OPS CHECK NORMAL ON GROUND, POWER RUN IAW MM CHAPTER 26-00.