Undershoot in Auto mode3507/3508 encountered the above symptom. From Event record show abnormalities on 3507 Brake Cyclinder Pressure Bogies 1 & 2 at 1109hrs & 1347hrs (reported fault time). Please investigate and follow up, thanks. **Fault cleared on Signal side. ~~~~~ 3507/3508 encountered Undershoot in Auto mode. From Event record show abnormalities on 3507 Brake Cyclinder Pressure Bogies 1 & 2 at 1109hrs & 1347hrs (reported fault time). Please investigate and follow up, thanks. Fault cleared on Signal side.  2507 ER D/L & found 3507 BCU wheel diameter setting 806mm. 3507 TIMS record wheel diameter 843mm, different from SAP record. Re-adjusted to 806mm. Brake pressure test all cars - OK. Limited movement - OK.  Selvan/Alcus/Anand 43878