Data Link Communications

• Schematic and Routing Diagrams
  • Data Link Communications Schematic Icons
  • Data Link Connector (DLC) Schematics (2.2L)
  • Data Link Connector (DLC) Schematics (3.0L)
• Component Locator
  • Data Link Communications Component Views
  • Data Link Communications Connector End Views
• Diagnostic Information and Procedures
  • Diagnostic Starting Point - Data Link Communications
  • Diagnostic Trouble Code (DTC) List
  • DTC U1000: Class 2 Data Link Malfunction
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Test Description
  • DTC U1001 To U1254: Module U1XXX Communication
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Test Description
  • DTC U1300, U1301 Or U1305: Class 2 Shorted
    • Circuit Description
    • Conditions for Running the DTCs
    • Conditions for Setting the DTCs
    • Action Taken When the DTCs Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
  • DTC U2100: CAN Bus Communication
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
  • DTC U2102 Or U2103: Controller Error
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
  • DTC U2104: Controller Area Network (CAN) Bus Reset Counter Overrun
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
  • DTC U2105, U2106, U2107, U2108: Lost Communications
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
  • Symptoms - Data Link 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
    • Diagnostic Aids
    • Test Description
  • Scan Tool Does Not Communicate with Keyword Data Line
    • Circuit Description
    • Diagnostic Aids
• Description and Operation
  • Data Link Communications Description and Operation
    • Notes
    • Class 2 Data Line
    • Controller Area Network (CAN)
    • Keyword 2000 Data Line