A diagnostic system for a battery management system is provided. The diagnostic system includes a microcontroller having application-specific components. A first BMS diagnostic handler application sends a first index value to an application-specific component diagnostic safety application. The application-specific component diagnostic safety application accesses an application-specific component diagnostic flag in a first table in a RAM if the first index value is equal to a valid index value in a first table. The application-specific component diagnostic safety application sends the application-specific component diagnostic flag to the first BMS diagnostic handler application.