Rear cab entry indication illuminated. Staff(MRB,DBG) checked and feedback both side partition door was closed. Staff(MRB, DBG) checked and confirmed no unautho rized person, no suspicious item and all switches (sealed an ~~~~~ 3603-Rear cab entry indication illuminated. Staff(MRB, DBG) feedback both side partition door was closed. Staff(MRB, DBG) checked and confirmed no unauthorized person, no suspicious item and all switches (sealed and unsealed) in normal condition inside the rear driving cab. Staff(MRB,DBG) opened and closed the partition door but fault persisted. Train taken out of service at JUR MT and replaced with a spare from UPD.  3604 checked/found B/S partition door unable to latch fully in closed position. Adjusted locking rod & function check partition door. Partition door able to latch fully. Checked 'REAR CAB ENTRY' indication not lit up at both DT cab.  Ridzuan 44507