TIMS showed APS fault. Staff(KRJ) checked and confirmed APS fault at car 1717. Train performance - o k. ~~~~~ TIMS showed APS fault.     Checked found FC516 (1717 AC1 CFOCR1). Further checked found 1717 AC1-2 CCU motor shorted to ground. Isolated CCU motor UVW. Car was cooling, fit for shortloop. Notification to HM for CCU replacement. Notification to HM: 2509702 Done by Jack, Sanip. 27/7/2023.