Abstract: A method of implementing an automated technology for conducting functional safety (FuSa) diagnostic coverage is provided. The method can include receiving functional safety information that includes failure modes defining wrong values of a signal indicating a factor manifesting an error, receiving an identification of internal safety protected signals and a diagnostic coverage for the FuSa block, performing back tracing of possible paths for an output port of a FuSa block for each failure mode of each safety protected signal, determining an area for each possible path, and determining, based on a diagnostic coverage and area calculated for each of the paths, a diagnostic coverage for each failure mode of the FuSa block.