WOMS
B code body Medium severity

B1759 Seat Driver Rear Down Circuit Short To Battery

The OBD2 code B1759 indicates a short circuit in the driver rear seat down adjustment circuit, meaning there is an electrical fault causing the circuit to connect directly to the battery, potentially leading to improper...

Definition

The OBD2 code B1759 indicates a short circuit in the driver rear seat down adjustment circuit, meaning there is an electrical fault causing the circuit to connect directly to the battery, potentially leading to improper seat operation

Common causes

  • Shorted wiring or connectors
  • Faulty seat motor
  • Damaged seat control module
  • Corroded or loose electrical connections
  • Faulty power supply to the seat circuit
  • Malfunctioning switch or control panel

Common misdiagnoses

  • Faulty seat switch
  • Damaged wiring harness
  • Defective seat motor
  • Malfunctioning body control module (BCM)
  • Incorrectly installed seat
  • Grounding issues
  • Faulty connectors or terminals

Troubleshooting steps

  1. 1. Visual Inspection

    Wiring and Connectors: Inspect the wiring harness and connectors associated with the seat adjustment system for any visible damage, fraying, or corrosion. Pay special attention to areas where the wires may be pinched or exposed

  2. 2. Seat Motor

    Check the seat motor for any signs of damage or wear

  3. 3. Check for Short Circuits

    Multimeter Testing: Use a multimeter to check for continuity in the wiring. Disconnect the seat motor and measure the resistance between the circuit and ground. A low resistance reading may indicate a short to battery

  4. 4. Inspect Ground Connections

    Ensure that all ground connections are secure and free of corrosion

  5. 5. Test the Seat Motor

    Direct Power Test: If safe to do so, apply direct battery power to the seat motor to see if it operates. If it does not work, the motor may be faulty and need replacement

  6. 6. Check Motor Resistance

    Measure the resistance of the motor windings. If the resistance is too low or too high, the motor may be defective

  7. 7. Scan for Additional Codes

    Check for Related Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues

  8. 8. Inspect the Seat Control Module

    Module Functionality: If applicable, check the seat control module for proper operation. This may involve testing the module with a scan tool or replacing it if it is suspected to be faulty

  9. 9. Clear Codes and Test Drive

    Clear the Code: After performing the above checks and repairs, clear the trouble code using an OBD-II scanner

  10. 10. Test Drive

    Take the vehicle for a test drive to see if the code reappears. Monitor the seat adjustment functions to ensure they are working correctly

  11. 11. Professional Help

    Seek Professional Assistance: If you are unable to resolve the issue, consider taking the vehicle to a qualified technician or dealership for further diagnosis and repair. By following these steps, you should be able to identify and resolve the issue related to the B1759 code. Always ensure safety precautions are taken when working with electrical systems in vehicles