Section 800 (Data Link Communication System)
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.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Data Link Communications
- DTC U1000 and U1255: Operating Parameter Has Not Been Associated
- DTC U1001 to U1254: Module U1XXX Communication
- DTC U1300, U1301, or U1305 (Generic Short DTC): No Valid Messages Are Detected On The Class 2 Serial Data Circuit
- DTC U1304: PCM To EBCM Communication
- Symptoms - Data Link Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Class 2 Device
- Scan Tool Does Not Communicate with UART Data Line
- Repair Instructions
- Description and Operation