Both VOBC was passive. TC reported TOD shows 1 VOBC. TC was unable to close train door in both ATPM and RMF. TC was also unable to open his Cab door to do platf orm duty. Front Cab TC tripped CB1 and CB2 to no avail. Rear VOBC-1RIMS recorded EMU 3622 as the leading cab. ~~~~~ 3622 found TLSK contactor contact 7001 to B1 intermittent high resistance (4.6 ohm to 196 ohm).  Goh AT. 03/08/2020.  3622 TLSK contactor replaced - Done. Function check - OK.  Hanafi. 04/08/2020.