Data Link Connector (DLC)
The DLC is a standardized 16 way connector located below the
instrument panel and close to the steering column. Both the connector design
and location are dictated by industry wide agreement to follow SAE J1962
standards.
All DLCs are required to provide a power supply, hot at all times, to
Pin 16. This circuit is used to power the scan tool. All DLCs provide
a power ground at Pin 4 and a clean signal ground at Pin 5.
The class 2 serial data communications circuit is provided at
Pin 2 of the DLC.
Class 2 Serial Data Link
The class 2 serial data link allows the following modules to
communicate and share data with each other:
| • | Auxiliary Power Drop Connector |
| • | Body Control Module (BCM) |
| • | Driver Information Center (DIC) |
| • | Electronic Brake Control Module (EBCM) |
| • | Instrument Panel Cluster (IPC) |
| • | Powertrain Control Module (PCM) |
| • | Remote Playback Device-CD Player (if equipped with UQ3) |
| • | Inflatable Restraint Sensing and Diagnostic Module (SDM) |
| • | Vehicle Interface Unit (VIU) (if equipped) |
The class 2 serial data link allows a scan tool to communicate
with the above modules for diagnostic and testing purposes.
