TIMS showed intermittent APS fault at front DT car. Staff(TAP) checked and confirmed APS fault at ca r 3653. Train performance - ok. ~~~~~ 3653 TIMS showed intermittent APS fault. Staff(TAP) confirmed APS fault at 3653. Train performance - ok. CE : 3653 isolated A/C #1 No APS fault recurrence when monitoring few station.  3653 FC: 408 and 414. Measured and found A/C 1-1 motor shorted to ground.    Isolated and tagged. Saloon temp. 23*C-24*C. Notif 2614680 raised for CCU c/o.  Sarma/Alan/Lee PT/Shafie 45478