Hands Free Module (HFM) - Electrical Diagnostics

• Diagnostic Code Index
• DTC Troubleshooting
  • B143B - Microphone 1 Circuit Low
    • Notes
    • When Monitored
    • Set Condition
    • Possible Causes
    • Diagnostic Test
  • B143C - Microphone 1 Circuit High
    • Notes
    • When Monitored
    • Set Condition
    • Possible Causes
    • Diagnostic Test
  • B143E - Microphone 2 Circuit Low
    • Notes
    • When Monitored
    • Set Condition
    • Possible Causes
    • Diagnostic Test
  • B143F - Microphone 2 Circuit High
    • Notes
    • When Monitored
    • Set Condition
    • Possible Causes
    • Diagnostic Test
  • B2205 - Original VIN Missing/Mismatch
    • Notes
    • When Monitored
    • Set Condition
    • Possible Causes
    • Diagnostic Test
  • U0019 - Can B 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