Data Link Communication System
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Data Link Communications
- DTC U1000 and U1255: Critical Operating Parameter Has Not Been Associated
- DTC U1001-U1254: Module U1XXX Error
- DTC U1300, U1301 or U1305: No Valid Messages Are Detected On The Class 2 Serial Data Circuit
- Symptoms - Data Link Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Class 2 Device
- Description and Operation