TIMS showed Smoke Internal at car rear M1 1503. Staff(YCK) checked and confirmed no signs of smoke b urning smell on exterior or interior of train. Train was esc orted to terminal station. TIMS showed Smoke Internal at car ~~~~~ T230 3504 (N) TIMS showed Smoke Internal at car rear M1 1503. Staff(YCK) checked and confirmed no signs of smoke burning smell on exterior or interior of train. Train was escorted to terminal station. YWT NB. CE : Found Tims showed 1503-smoke internal. Reset fault cleared. No abnormality found.  1503  FC720 (Smoke internal). Check no.1 end internal smoke detector. No signs of dust and water ingress. Function check - ok. Swapped SDR1 from #1503 to #3503. OPS 20 raised to check 1503 no.1 end internal smoke detector.  Shaun Lau 45419 Check 1503 no1 internal smoke detector  serviced 1503 no.1 end smoke detector. Function check and security check ok. Done by: Haslan/Fauzi 12.5.24