Module Communications Network

• Description & Operation
• Component Locations
• Repairing Bus Wiring
• Self-Diagnostic System
  • Inspection & Verification
  • Data Link Diagnostic Test
  • Retrieving & Clearing Diagnostic Trouble Codes
  • Accessing Parameter Identification (PID)
• System Testing
  • Notes
  • Test A: 4-Wheel Anti-Lock Brake System (4WABS) Module Does Not Respond To NGS Tester
  • Test B: Air Bag Diagnostic Monitor Does Not Respond To NGS
  • Test C: Powertrain Control Module (Pcm) Does Not Respond To NGS
  • Test D: Auxiliary Powertrain Control Module (APCM) Does Not Respond To NGS
  • Test E: Natural Gas Vehicle Module (NGVM) Does Not Respond To NGS
  • Test F: No Module/Network Communications - ISO 9141 Network
  • Test G: No Module/Network Communications - SCP Network
  • Test H: No Module/Network Communication
• Diagnostic Trouble Code (DTC) Definitions
• Parameter Identification (PID) Definitions
• Wiring Diagrams