TC reported TIMS showed air-con fault atrear M1 set #02. Unable to reset. Staff(BBT) checked and co nfirmed that car 1640 set #02 air-con faulty. Reset - ok. Ca r was cooling. ~~~~~ TC reported TIMS showed air-con fault at     #1640 a/c 1-2 check freon low due to LP pipe leaking-replaced seal done and charge freon ok. Before LP=0psi & HP=0psi.After LP=40psi & HP=110psi All units test run as pernormal with cut in/out..Monitored for few hours and check freon no leakage ok.Tims temp-23~24 degC. Done by Saini/Asruddin.  27/10/22