Data Link Communications System

• Description & Operation
• Component Locations
• Trouble Shooting
  • Preliminary Inspection
• Self-Diagnostic System
  • Retrieving & Clearing Diagnostic Trouble Codes
  • Diagnostic Trouble Code Definitions
• Diagnostic Tests
  • DTC U1300: Class 2 Communication Circuit Voltage Is Low
    • Description
    • DTC Parameters
    • Action Taken When DTC U1300 Is Set
    • Diagnostic Procedure
    • Diagnostic Aids
  • DTC U1301: Class 2 Communication Circuit Voltage Is High
    • Description
    • DTC Parameters
    • Action Taken When DTC U1301 Is Set
    • Diagnostic Procedure
    • Diagnostic Aids
• System Tests
  • Notes
  • Test A: Scan Tool Does Not Power Up
    • Description
    • Diagnostic Procedure
  • Test B: Scan Tool Does Not Communicate With Components
  • Test C: Scan Tool Does Not Communicate With EBCM
  • Test D: Scan Tool Does Not Communicate With SDM
  • Test E: Scan Tool Does Not Communicate With Pcm
• Special Tools
• Connector Identification
• Wiring Diagrams