Class 2 Data Line

Class 2 data is transmitted at a higher speed. The messages have a different configuration than UART data. While UART uses a master in order to control serial data line traffic, class 2 uses the peer-to-peer method along with message arbitration in order to manage the data line traffic.

The control modules on the class 2 data line can include the following modules:
^ The body control module (PZM)
^ The cellular telephone module
^ The Climate Control Panel (CCP)
^ The Continuously Variable Road Sensing Suspension (CVRSS) module
^ The Electronic Brake And Traction Control Module (EBTCM)
^ The heater and A/C programmer
^ The inflatable restraint Sensing And Diagnostic Module (SDM)
^ The instrument cluster
^ The Memory Mirror Module (MMM)
^ The memory seat module
^ The Powertrain Control Module (PCM)
^ The radio
^ The radio amplifier
^ The Radio Interface Module (RIM)
^ The Remote Function Actuator (RFA) module