TC reported A/C fault at Front M2 car. Staff(BDK) checked, confirmed that Front M2 car #2 set air-co n faulty. Reset - ok. Car was cooling. ~~~~~ To check  2601 A/C 2 evaporator unit for leakage.     Rectify freon leak at #2601-a/c 2 evaporator unit coupling side.Retightened and freon leak test ok.Retop freon on LP=50,HP=110 and monitor for 1 hour a/c function ok.    Done by Saini/Koh/Asruddin  20/10/20 To check #2601 A/C 2 when pit is availabe TC reported A/C fault at Front M2 car. S