Hands Free Module (HFM) - Electrical Diagnostics

• Diagnostic Code Index
• DTC Troubleshooting
  • B143B-Microphone 1 Circuit Low
    • Circuit Schematic
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • B143C-Microphone 1 Circuit High
    • Circuit Schematic
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • B143E-Microphone 2 Circuit Low
    • Circuit Schematic
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • B143F-Microphone 2 Circuit High
    • Circuit Schematic
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • B2205-Original VIN Missing/Mismatch
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • U0019-Can B Bus
    • Circuit Schematic
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • U0141-Lost Communication With IPM (FCM/TIPM)
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • U0155-Lost Communication With Cluster/CCN
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test
  • U0184-Lost Communication With Radio
    • Additional Wiring
    • Monitor Conditions
    • Set Conditions
    • Possible Causes
    • Diagnostic Test