As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAX - LEFT AND RIGHT FIRE DETECTION SYSTEM ACTIVATED ON TAXI. AIRCRAFT RETURNED TO GATE. MAINTENANCE WAS UNABLE TO DUPLICATE REPORTED DISCREPANCY. SYSTEM OPERATIONAL CHECK NORMAL. CLEANED ELECTRICAL CONNECTIONS AS PRECAUTION. AIRCRAFT RETURNED TO SERVICE. (M)