Communications Systems

• Schematic and Routing Diagrams
  • Data Link Communications Schematic Icons
  • Data Link Connector (DLC) Schematics
• Component Locator
  • Data Link Communications Component Views
  • Data Link Communications Connector End Views
• Diagnostic Information and Procedures
  • Data Link Connector Diagnosis
    • Circuit Diagnosis
    • Diagnostic Aids
  • Diagnostic Starting Point - Data Link Communications
  • 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 Component
    • Circuit Description
    • Diagnostic Aids
    • Test Description
• Description and Operation
  • Data Link Communications Description and Operation
    • Circuit Description
    • UART Data Line
    • Keyword 2000 Data Line
    • Keyword 82 Data Line