As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, LEFT T-HANDLE LIGHT ILLUMINATED. SHUT DOWN LEFT ENGINE AND LIGHT WENT OUT. LEFT T-HANDLE LIGHT ILLUMINATED AGAIN 7 MINUTES AFTER ENGINE START. SHUTDOWN ENGINE, LIGHT STAYED ON APPROX 45 SECONDS BEFORE GOING OUT. INSPECTED LT ENGINE, NO FIRE NOTED. REMOVED AND REPLACED FIRE DETECTION CONTROL BOX PN 477-90005. PERFORMED OPERATIONAL CHECK OF FIRE DETECTION SYSTEM IAW 26-10-00, RAN A/C OPS CHECK GOOD.