TC reported TIMS indicated Front M1 carsmoke external fault. Staff (YCK) checked and confirmed - noheat nor smoke spotted. T260 line cleared from BSH1 to AMK1 and T259 line cleared from AMK1 to YCK1, no heat nor smoke ~~~~~ TC reported TIMS indicated Front M1 car     Check and found water ingress into external smoke detector,C/O done and function test ok. Smoke detector:- S/N: Nil Not: 2473101 raise. Done by Sanip/Koh. 24/03/23