Class 2 Data Line

The data link is a ring/star configuration with discrete lines entering and leaving each module. This allows communications to the modules on the ring if one of the two discrete circuits is open.

A total list of the control modules on the Class 2 Serial Data Circuit can include the following:
^ Body Control Module (BCM)
^ Continuously Variable Road Sensing Suspension (CVRSS) Module w/F45
^ Electronic Brake Control Module (EBCM)
^ HVAC control module
^ HVAC control processor
^ Inflatable Restraint Sensing And Diagnostic Module (SDM)
^ Instrument Panel Cluster (IPC)
^ Memory Mirror Module (MMM) w/A45
^ Memory Seat Module (MSM) w/A45
^ Powertrain Control Module (PCM)
^ Radio
^ Radio Interface Module (RIM) w/UQ4
^ Remote Control Door Lock Receiver (RCDLR)
^ Vehicle Interface Unit (VIU)

The VIU has only one communication line connection to the Class 2 serial data circuit.

"For a description of the RPO Code(s) shown in this article or any of the images therein, refer to the RPO Code List found at Vehicle/Application ID". RPO Codes