2602-APS BATTERY OVER TEMPERATURE FAULT ~~~~~ 601/602 reported 4 M-car having APS fault during train prep.  2602 checked FC 426/427. Checked battery temp. strip = 40*C, battery voltage = 109 vdc. Measured battery thermal sensor = 6 kohm. Swapped #2602 battery to #1602. Swapped APS controller from #2602 to #2601 & #1602 to #1601. Monitor for 1 hr & fault did not transfer. OPS 20 raised to follow-up. #1602 Battery S/N : 2016-216 #2602 Battery S/N : 2016-264  Suhairi/Syukur/Ahmad/Syairazi 44937 Opr 20  601/602 found 4 M-cars battery over-voltage/current. EMU 602 cab occupied during fault. Checked 4 M-cars diode across A105-B101, A101-A102 & 6621-6626 - Satis. Checked fault trace, FBSS activated during fault occurrence. Simulated FBSS activation & found #1602 battery repeatedly over-voltage/current. Replaced #1602 battery with new spare. Preventively c/o POW72 cards on both DT cars. Preventively c/o #3601 TLSK. Checked all battery voltage output - OK. #1602 Battery S/N : OLD - 2016-174 (LH & RH) NEW - 2016-264 (LH & RH) POW-72 S/N : #3601 : OLD - 301RC001-2H         NEW - 320RX104-2H #3602 : OLD - 301RC001-1H         NEW - 331RX102-2H  Lee JC 44953 2602-TO CONTINUE RECTIFICATION.  601/602 found 4 M-cars battery over-voltage/current. EMU 602 cab occupied during fault. Checked 4 M-cars diode across A105-B101, A101-A102 & 6621-6626 - Satis.    Checked fault trace, FBSS activated during fault occurrence. Simulated FBSS activation & found #1602 battery repeatedly over-voltage/current. Replaced #1602 battery with new spare. Preventively c/o POW72 cards on both DT cars. Preventively c/o #3601 TLSK. Checked all battery voltage output - OK.  Lee JC 44953 POW-72 S/N : #3601 : OLD - 301RC001-2H         NEW - 320RX104-2H #3602 : OLD - 301RC001-1H         NEW - 331RX102-2H #1602 Battery S/N : OLD - 2016-174 (LH & RH) NEW - 2016-264 (LH & RH)