Owner sues condo association for insurance deductible

I am on the board of directors for our 45 unit condo association. We have a tenant that has sued the association for his insurance deductible when he had property stolen from his garage. His argument is that the association did not fix a lock on a common entry door (he jammed by the way) into his building and are therefore responsible for his loss. His garage door was unlocked in the common hallway and his overhead door to the outside was often open and unattended. Does he have a case?