TIMS showed fire external alarm in car 1513. Staff(BNV) checked and confirmed no sign of fire and sm oke at the exterior car 1513. Rear T319 proceeded ATPM mode and confirmed no sign of fire and smoke on track. ~~~~~ CHECKED AT TIMS #1513 EXTER L SMOKE DETECTOR ALARM ACTIVATED.REPLACED #1513 SMOKE DETECTOR EXTER L AND FUNCTION CHECKED OK.MONITOR FOR 1 HOUR OK.AKHBAR/AZHAR 11.02.2022 SMOKE DETECTOR S/N  NEW  SD009                     OLD -