WOMS
B code body Medium severity

B1705 Seat Driver Recline Rearward Switch Circuit Failure

The OBD2 code B1705 indicates a malfunction in the driver seat recline rearward switch circuit, suggesting a failure in the electrical system or the switch itself that controls the rearward reclining function of the...

Definition

The OBD2 code B1705 indicates a malfunction in the driver seat recline rearward switch circuit, suggesting a failure in the electrical system or the switch itself that controls the rearward reclining function of the driver's seat

Common causes

  • Faulty driver recline switch
  • Damaged wiring or connectors
  • Short circuit in the circuit
  • Open circuit in the circuit
  • Faulty seat control module
  • Corrosion in connectors
  • Poor ground connection

Common misdiagnoses

  • Faulty seat switch
  • Wiring issues or shorts
  • Faulty seat control module
  • Malfunctioning power seat motor
  • Issues with the vehicle's body control module (BCM)
  • Problems with the vehicle's electrical system or battery
  • Incorrectly diagnosed as a problem with the seat track or frame

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other related trouble codes. This can provide more context and help identify if there are multiple issues

  2. 2. Inspect the Seat Switch

    Visual Inspection: Check the driver seat recline switch for any visible damage, wear, or corrosion

  3. 3. Functionality Test

    Test the switch to ensure it is functioning properly. You can do this by using a multimeter to check for continuity when the switch is activated

  4. 4. Examine Wiring and Connectors

    Wiring Inspection: Inspect the wiring harness connected to the seat switch for any signs of damage, fraying, or short circuits

  5. 5. Connector Check

    Ensure that all connectors are securely attached and free of corrosion or dirt

  6. 6. Test the Seat Motor

    If the switch appears to be functioning correctly, test the seat recline motor. You can do this by applying direct power to the motor to see if it operates

  7. 7. If the motor does not work when powered directly, it may need to be replaced

  8. 8. Check for Ground Issues

    Ensure that the ground connections for the seat control system are secure and free of corrosion. A poor ground can cause circuit failures

  9. 9. Inspect the Body Control Module (BCM)

    The BCM may be responsible for controlling the seat functions. Check for any faults or issues with the BCM that could be affecting the seat recline switch circuit

  10. 10. Look for Short Circuits

    Use a multimeter to check for short circuits in the wiring. A short can cause the circuit to fail and trigger the B1705 code

  11. 11. Clear the Code and Test Drive

    After performing the above checks and repairs, clear the trouble code using the OBD-II scanner and take the vehicle for a test drive to see if the code returns

  12. 12. Consult Repair Manual

    If the issue persists, consult the vehicle’s repair manual for specific diagnostic procedures related to the seat control system

  13. 13. Seek Professional Help

    If you are unable to resolve the issue after these steps, it may be best to consult a professional mechanic or technician who has experience with automotive electrical systems. By following these troubleshooting steps, you should be able to identify and potentially resolve the issue related to the B1705 code