Data Link Communications System

• Description & Operation
• Component Locations
• Trouble Shooting
  • Preliminary Inspection
  • Class 1 Serial Data Line
• Connector Identification
  • Data Link Connector
• System Tests
  • Notes
  • Test 1: Scan Tool Will Not Communicate With Class 1 Serial Data Line
  • Test 2: Scan Tool Will Not Communicate With Class 2 Serial Data Line
• Wiring Diagrams