Train doors at car Rear DT (3623) 'B3' d ~~~~~ Train doors at car Rear DT (3623) 'B3' door not proven closed. TC recycled three times - okay. Staff(TAP) boarded train and monitor to NEW SB and confirmed no abnormalities. (L3) CE: 3623 B3 door able to open n closed fully, no DIR lit L3 3623 B3 door no fault code, B2 door fault code 953X2 @1815hrs as reported time. Scope B3 and B2 door roller ok. No sign of delamination and damage. No sign of wobbly and push/pull ok. DLD rubber cushion ok. DLS red mark ok, security ok. DCS ok. Door guide and Jrail ok. Door matting B3 within criteria. B2 65.1mm adjust to 63.6mm. Door static within criteria, Door cyclic few times door operation ok. Done by Sain/Zulq 45273