WOMS
B code body Medium severity

B1722 Seat Driver Rearward Switch Circuit Open

The OBD2 code B1722 indicates that there is an open circuit in the driver rearward seat switch, meaning the switch is not functioning properly or is disconnected, preventing the seat from moving rearward

Definition

The OBD2 code B1722 indicates that there is an open circuit in the driver rearward seat switch, meaning the switch is not functioning properly or is disconnected, preventing the seat from moving rearward

Common causes

  • Faulty driver rearward switch
  • Open circuit in the wiring harness
  • Poor connection or corroded terminals
  • Faulty seat control module
  • Damaged or frayed wires
  • Malfunctioning power supply to the switch

Common misdiagnoses

  • Faulty seat switch
  • Wiring issues or shorts
  • Malfunctioning body control module (BCM)
  • Defective seat motor
  • Poor ground connection
  • Incorrectly installed or damaged seat assembly
  • Faulty connectors or terminals

Troubleshooting steps

  1. 1. Visual Inspection

    Check Wiring and Connectors: Inspect the wiring harness and connectors associated with the seat switch for any signs of damage, corrosion, or loose connections

  2. 2. Look for Shorts or Breaks

    Look for any frayed wires or broken connections that could cause an open circuit

  3. 3. Test the Switch

    Switch Functionality: Use a multimeter to test the seat driver rearward switch. Check for continuity when the switch is activated. If the switch is faulty, it may need to be replaced

  4. 4. Check for Ground

    Ensure that the switch is properly grounded. A poor ground connection can lead to an open circuit

  5. 5. Inspect the Seat Control Module

    Module Functionality: If the switch and wiring are intact, the issue may lie within the seat control module. Check for any fault codes in the module using a scan tool

  6. 6. Reprogram or Reset

    Sometimes, reprogramming or resetting the module can resolve communication issues

  7. 7. Check for Related Codes

    Scan for Additional Codes: Use an OBD-II scanner to check for any other related trouble codes that may provide more context to the issue

  8. 8. Perform a Continuity Test

    Test Circuit Continuity: With the vehicle off, perform a continuity test on the circuit from the switch to the control module. This will help identify if there is a break in the circuit

  9. 9. Inspect Fuses

    Check Fuses: Inspect any fuses related to the seat control system. A blown fuse can interrupt the circuit and cause the code to trigger

  10. 10. Consult Wiring Diagrams

    Refer to Service Manual: Use the vehicle’s service manual to refer to wiring diagrams for the seat control system. This can help identify the correct pinouts and circuit paths

  11. 11. Test with a Scan Tool

    Live Data Monitoring: If available, use a scan tool to monitor live data while operating the seat switch. This can help determine if the signal is being sent and received correctly

  12. 12. Repair or Replace Components

    Replace Faulty Parts: If any faulty components are identified (switch, wiring, or module), replace them as necessary

  13. 13. Clear Codes and Test Drive

    Clear the Code: After repairs, clear the trouble codes and take the vehicle for a test drive to see if the code returns.1

  14. 14. Seek Professional Help

    Consult a Professional: If the issue persists after performing these steps, it may be best to consult a professional mechanic or technician for further diagnosis. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1722 code