Train encountered power fault at rear M1car while arriving station. Reset - ok.n arriving CBR1, SBW1 and ADM1. Unable to reset. TC feedbacktrain performance - ok. ~~~~~ 1502 encountered power fault arriving station. Reset - ok.    Fault recurred when arriving CBR1, SBW1 and ADM1. Unable to reset. TC feedback train performance - ok. Train taken out of service at JUR. Replacement train from UPD.  1502,,FC 150/820/821/108/136. Checked/found #1502 TM3 shorted to GND. Checked line breakers,charging resistors,CCD shoes/fuses - OK. Notif 2488594 raised to HM to follow-up.  Au TK 45061 Notif 2488594 Name                          : Redzwan Sukis Date of Occurrence            : 15/5/2023 Last Service Date             :   EMU / Equipment / Location    : 1502/Traction Motor/#3 motor Equipment Serial No. (if any) :   Description of fault / cause  : Motor shorted to ground. Measurements (if any)         :   Required Rectification        : Required Servicing(PRCB                                          ISOLATED)