Data Communication System

• Schematic and Routing Diagrams
  • Data Communication Schematics
  • Body Control System Schematics
• Diagnostic Information and Procedures
  • Diagnostic Code Index
  • Diagnostic Starting Point - Data Communications
  • DTC U0073
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTCs
    • Conditions for Setting the DTC
    • Action Taken When the DTCs Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • DTC U0100 - U0299
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Testing
    • Repair Procedures
  • DTC U1001-U1254
    • Circuit Description
    • DTC Descriptors
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Test Description
  • DTC U1500
    • Circuit Description
    • DTC Descriptor
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • Symptoms - Data Communications
    • Notes
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Scan Tool Does Not Power Up
    • Circuit Description
    • Test Description
  • Scan Tool Does Not Communicate with Class 2 Device
    • Circuit Description
    • Test Description
  • Scan Tool Does Not Communicate with High Speed GMLAN Device
    • Notes
    • Diagnostic Aids
  • Data Link References
• Description and Operation
  • Data Link Communications Description and Operation