TC reported DIR illuminated with no DMI.informed TC to physically check both cab doors and operate ADBS. Proceeded in ATPM to CTH NB. ~~~~~ IMDC- Depot checked and found 3529 A-side cab door latch misaligned with freeplay when cab door fully closed.
Adjusted cab door latch and performed functional check Satis.
Train released on 13/11/2021.