Data Link Communications System

• Description & Operation
• Component Locations
• Trouble Shooting
  • Preliminary Inspection
  • Pcm Data Line
• System Tests
  • Notes
  • Test A: Scan Tool Will Not Communicate With UART Data Line
  • Test B: Scan Tool Will Not Communicate With Class 2 Data Line
  • Test C: Scan Tool Will Not Communicate With Anti-Theft Data Line
• Circuit Tests
  • Pcm Data Line
  • Anti-Theft Module Data Line
• Connector Identification
• Wiring Diagrams