TIMS showed Fire / Smoke Internal at car3501. Staff(LVR) checked and confirmed no signs of smoke / fire / burning smell on exterior or interior of train. Trainwas escorted to terminal station. TIMS showed Fire / Smoke ~~~~~ 3501 TIMS showed Fire/Smoke Internal. Staff(LVR) checked and confirmed no signs of smoke/fire/burning smell on exterior or interior of train. Train was escorted to terminal station. LVR EB. CE : Throughout cx car 3501 tim shown Fire/smoke internal. Reset fault cleared.  3501 FC 720: smoke internal. Checked no.2 end smoke detector. No signs of dust and water ingress. Function check smoke detector - ok. No fault reoccurred. Changeout SDR2 relay as preventive measure. OPS 20 raised to check #3501 no.2 internal smoke detector.  Au TK 45455  FOLLOW UP OPS10 REPLACED 3501 NO 2 INTER L SMOKE SENOR FOUND SENOR ACCMULATION OF DUST.FUNCTION/SECURITY CHECKED OK.S/N NEW  ,S/N OLD  .M HAIRUL/AZHAR 26.06.2024