TIMS showed Smoke Internal at Rear DT car. Staff(YIS) checked and confirmed no signs of smoke / fire/ burning smell on exterior or interior of train. Train was escorted to terminal station. ~~~~~ TIMS showed Smoke Internal at Rear DT ca   Checked internal FSD and found sensor to be dusty and PCB side checked and found no signs of rust. Cleaned up the sensor and function test ok. Done by: Rizman, Sanip