Diagnostic Communication Manager: The Dcm module implements diagnostic communication according to ISO 14229-1:2020 (UDS). Some diagnostic requests are processed directly in the Dcm (management of diagnostic sessions, reading of error codes, etc.) and some are routed to the SWCs via port interfaces (reading, writing and controlling of data elements within a data identifier, execution of routines, etc.). Legal requirements of OBDII (SAE1979) OBDonUDS (SAE J1979-2) and WWH-OBD (ISO27145) are also supported.