Class 2 Serial Data Line

The class 2 serial data line is a Purple wire connected between Data Link Connector (DLC) terminal No. 2 and the following modules.

• Body Control Module (BCM)
• Electronic Brake Control Module (EBCM)
• Instrument Panel Cluster (IPC)
• Powertrain Control Module (PCM)
• Inflatable Restraint Sensing And Diagnostic Module (SDM)
• Radio

The class 2 serial data line allows these modules to communicate with each other and with the scan tool for diagnostic and testing purposes.