Data Communication System
- Description and Operation
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Data Link Communications
- Diagnostic Trouble Code (DTC) List
- DTC U1000 Or U1255: Missing Module Node Alive Message
- DTC U1001 To U1254: Module Error
- DTC U1300, U1301, or U1305: Class 2 Serial Data Circuit High/Low Voltage
- Symptoms - Data Link Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with Class 2 Device
- Schematic Wiring Diagrams