A connector assembly is provided with a first member and a second member that is removably connected to the first member. The second member has a deflectable latch that secures the first and second members together. A connector position assurance device is movably supported on the second member. The connector position assurance device includes a body portion and a deflectable locking arm that extends from the body portion. The connector position assurance device is movable between a first position, wherein the locking arm is in contact with the latch to lock the connector position assurance device in the first position and to deflect the locking arm when the latch is deflected, and a second position, wherein the body portion is positioned adjacent to the latch to prevent deflection of the latch, only after the first and second members are secured together by the latch.