Catalysis of the PEP-dependent, phosphoryl transfer-driven transport of substances across a membrane. The transport happens by catalysis of the reaction: protein S-phosphocysteine + mannitol(out) = protein cysteine + mannitol phosphate(in). This differs from primary and secondary active transport in that the solute is modified during transport.
protein-phosphocysteine-mannitol phosphotransferase system transporter activity