Body Control Modules & Data Link Communications System

• Description
• Operation
• Component Locations
• Programming
  • Body Control Module (BCM)
  • PASSLOCK™ Auto Learn Procedure
• Trouble Shooting
  • Initial Check
• Self-Diagnostic System
  • Notes
  • Scan Tool Diagnostics
• System Tests
  • Notes
  • Body Control Module (BCM) Diagnostic System Check
  • Scan Tool Does Not Communicate With Class 2 Device
  • Scan Tool Inoperative
• Diagnostic Tests
  • DTC B1397: Device Voltage Reference Out # 1 Circuit Low
    • Notes
    • Description
    • Testing
    • Diagnostic Aids
  • DTC B1398: Device Voltage Reference Out # 1 Circuit High
    • Notes
    • Description
    • Testing
    • Diagnostic Aids
  • DTC B1477: Retained Accessory Power (Rap) Circuit Low
    • Notes
    • Description
    • Testing
    • Diagnostic Aids
  • DTC B1478: Retained Accessory Power (Rap) Circuit High
    • Notes
    • Description
    • Testing
    • Diagnostic Aids
  • DTC B1480: Battery Rundown Protection Circuit Malfunction
    • Notes
    • Description
    • Testing
    • Diagnostic Aids
  • DTC U1000 & U1255: Class 2 Communication Malfunction
    • Description
    • Testing
    • Diagnostic Aids
  • DTC U1001-U1097: Loss Of XXX Communications
    • Description
    • Testing
  • DTC U1300: Class 2 Serial Data Link Low
    • Description
    • Diagnostic Aids
  • DTC U1301: Class 2 Serial Data Link High
    • Description
    • Diagnostic Aids
  • DTC U1305: Class 2 Data Link Low Or High
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
• Removal & Installation
  • Notes
  • Body Control Module (BCM)
    • Notes
    • Removal & Installation
• Wiring Diagrams