TC reported TIMS displayed air-con faultpresent at front M2 car. Unable to reset. Staff(KRJ) checke d and confirmed that front M2 car set #2 air-con faulty. Una ble to resetCar was warm. ~~~~~ 2660 TC reported TIMS displayed air-con fault Unable to reset. Staff(KRJ) confirmed 2660 #2 air-con faulty Unable to reset. Car was warm. NS Faults Updating:2660 ac 2 faulty n unable to reset, isolated car was warm temp 26.4*.(08:05hrs).  2660 A/c 2-2 FC CMOCR2, APS fault, PR failure. TIMS A/c page showed #2660 A/c 2 fault. Found #2660 A/c 2 breaker keep tripping when normalised. Measured #2660 A/c 2-2 current & found compressor motorshorted. Removed wires U/V/W & A/c 2 stopped tripping. Notif 2446888 raised to replace CCU. #2660 A/c 2 tagged & wires U/V/W isolated.  Farid/Haiqal/Zulfudhly/Amir/Koon PL 44917 Notif 2446888 Name                              : Jing Cong Date    Of    Occurrence          : 22/12/2022 Last    Service    Date           :   EMU/Equipment/Location            : 659/660/ Aircon motor / 2660                                     A/C 2-2 Equipment Serial No. (if any)     :   Description Of Fault/Cause        : A/C Motor shorted. Measurements     (if any)         :   Required   Rectification          : Required C/O