TIMS showed Fire Internal at Rear M1 car. Staff(AMK) checked and confirmed no signs of smoke / fire / burning smell on exterior or interior of train. Train was escorted to terminal station. ~~~~~ 1523 TIMS showed Fire Internal. Staff(AMK) confirmed no signs of smoke/fire/burning smell on exterior or interior of train. Train was escorted to terminal station. CE : T416(3524) RM1 car 1523 having smoke internal pre-alarm fault. Fault reset cleared. No abnormality found.  1523 found FC 720 (Smoke Internal) on TIMS. Replaced SDR1 relay which was previously swapped from #3523. (same Smoke Internal Fault) on 27/12/2023. Function test - OK.  Au TK 45311