UART Serial Data Link
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The UART serial data communications circuit is provided at Pin 9 of the DLC.
The UART serial data link allows the following modules to communicate and share data with each other:
- Driver information center (DIC)
- Powertrain control module (PCM)
- Electronic brake control module (EBCM)
The PCM uses class 2 serial data link for diagnostics and testing.