Hands Free Module (HFM) - Electrical Diagnostics

• Diagnostic Code Index
• DTC Troubleshooting
  • B143B-Microphone 1 Circuit Low
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • B143C-Microphone 1 Circuit High
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • B143E-Microphone 2 Circuit Low
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • B143F-Microphone 2 Circuit High
    • Notes
    • Theory Of Operation
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • B2205-Original VIN Missing/Mismatch
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0010-Can Interior Bus
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0141-Lost Communication With IPM (FCM/TIPM)
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0155-Lost Communication With Cluster/CCN
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test
  • U0184-Lost Communication With Radio
    • Notes
    • When Monitored:
    • Set Condition:
    • Possible Causes
    • Diagnostic Test