DT537 UNDERSHOOT7 UNDERSHOOT TAP2 23/09/22 1725 DISTANCE 3M G SIDE NA FER RS EAR SIG SIDE ~~~~~ DT537 UNDERSHOOT     #3537 Fault code 322 multiple times.Conduct Dump v/v test ok.Check BCP wothin criteria.Brake cyclic ok.To follow up check on #3537 BCU fault code 322.To check tacho and BCU for any looseness.0020 raise to follow up. Done by Zulq.  26/09/22 3537 BCU fault code 322 multiple times, To check Tacho impedance and bcu for any looseness #3537 check Tacho impedence are ok.WSP fucntion check ok.BCU replaced due to multiple time of fault.Brake cyclic test are ok,during depot shunting no W/S/S. #3537 BCU:- New: 1809057 Old: 1819177 Not: 2421233 raise. Done by Jack. 26/09/22