Class 2 Serial Data Link

The class 2 serial data link allows these modules to communicate data with each other:

• Body Control Module (BCM)
• Electronic Brake Control Module (EBCM)
• Heads Up Display (HUD)
• HVAC Control Module (with CJ2)
• Inflatable Restraint Sensing Diagnostic Module (SDM)
• Instrument Panel Cluster (IPC)
• Memory Seat Module (MSM) (with A43)
• Powertrain Control Module (PCM) - 3.4L
• Radio
• Rear Seat Entertainment (RSE)
• Theft Deterrent Control Module
• Vehicle Communication Interface Module (VCIM)
• Devices on the auxiliary power drop connector

In addition, the class 2 serial data link allows a scan tool to communicate with these modules for diagnostic and testing purposes.