Data Link Communications Description and Operation for Chevrolet Venture 2005
Data Link Connector (DLC)
The data link connector (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 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 data link connector (DLC) terminal 2.
| • | Driver information center (DIC) |
| • | Electronic brake control module (EBCM) |
| • | Instrument panel cluster (IPC) |
| • | Inflatable restraint sensing and diagnostic module (SDM) |
| • | Memory seat module (MSM) |
| • | Powertrain control module (PCM) |
| • | 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.
