TIMS showed fire internal in the front DT car. Staff (CTH) checked and confirmed slight braking smel l in the gangway of front DT and front M1 cars. ~~~~~ Fault unable to duplicate. Verified 3523 and 1523 brake shoes are able to released while coasting. Found 3523 #2E and 1523 #1E with gangway pleat torn.Checked 30mins for any fault but no occurrence. Checked 3523 Fire internal panel for activation but no reoccurence. Gangway Pleat: 1. 3523 #2E: N2388184 2. 1523 #1 E: N2388185  /LAI.M.K/04.06.22