Information Bus: Description and Operation

DATA LINK COMMUNICATIONS DESCRIPTION AND OPERATION

DATA LINK CONNECTOR (DLC)
The DLC connection is the central location for communicating with all modules that communicate using a serial data link. The DLC provides a power source and a standard connection for the scan tool.

Refer to Data Link Connector (DLC) Schematics for circuit information.

CLASS 2 SERIAL DATA LINK
The class 2 serial data link allows a scan tool to communicate with the listed modules for diagnostic and testing purposes. The class 2 serial data link is located at the DLC connector terminal 2.
- Driver Information Center (DIC)
- Electronic Brake Control Module (EBCM)
- Instrument Cluster (IPC)
- Inflatable Restraint Sensing and Diagnostic Module (SDM)
- Memory Seat Module (MSM)
- Powertrain Control Module (PCM)
- Radio
- Theft Deterrent Control Module
- Vehicle Interface Unit (VIU) if equipped

The class 2 serial data link may also be connected to the Video Disc Player and Rear Video/Audio/HVAC Module if equipped. However the Video Disc Player and Rear Video/Audio/HVAC Module will not communicate with the scan tool, do not set DTCs and other modules do not set DTCs against them.