E&C Serial Data Line

The E&C serial data line is UART-base communication system. UART serial data lines have a master of the serial data line and remote transceivers. The master controls the message traffic on the serial data line by polling all of the remotes (control modules). The master then waits for the proper response. The control modules on the E&C serial data line can include the following modules:
^ The radio
^ The compact disc (CD) player

The E&C serial data line is not connected to the Data Link Connector (DLC), so it can not be accessed with a scan tool.