WOMS
B code body Medium severity

B1708 Seat Driver Recline Rearward Switch Circuit Short To Ground

The OBD2 code B1708 indicates a malfunction in the driver seat recline rearward switch circuit, specifically that there is a short to ground, which means the circuit is unintentionally connected to the ground, causing...

Definition

The OBD2 code B1708 indicates a malfunction in the driver seat recline rearward switch circuit, specifically that there is a short to ground, which means the circuit is unintentionally connected to the ground, causing improper function

Common causes

  • Shorted wiring or connectors
  • Faulty driver recline switch
  • Damaged seat harness
  • Corroded connectors
  • Grounding issues
  • Malfunctioning seat control module

Common misdiagnoses

  • Faulty seat recline motor
  • Damaged wiring harness
  • Defective seat control module
  • Malfunctioning switch
  • Grounding issues in the electrical system
  • Incorrectly diagnosed body control module (BCM) issues
  • Misinterpreted fault codes related to other seat functions

Troubleshooting steps

  1. 1. Understand the Code

    B1708 typically relates to the driver’s seat recline switch and indicates that there is a short circuit to ground in the wiring or the switch itself

  2. 2. Visual Inspection

    Wiring and Connectors: Inspect the wiring harness and connectors associated with the driver’s seat recline switch. Look for any signs of damage, fraying, or corrosion

  3. 3. Switch Condition

    Check the recline switch for any physical damage or signs of wear

  4. 4. Check for Related Codes

    Use a scan tool to check for any additional trouble codes that may provide more context or indicate related issues

  5. 5. Test the Switch

    Continuity Test: Disconnect the switch and use a multimeter to check for continuity. Test the switch in both positions (reclined and upright) to ensure it operates correctly

  6. 6. Resistance Check

    Measure the resistance across the switch terminals to see if it falls within the manufacturer’s specifications

  7. 7. Inspect the Circuit

    Wiring Diagram: Refer to the vehicle’s wiring diagram to understand the circuit layout. This will help you identify which wires are involved and where the short might be occurring

  8. 8. Voltage Test

    With the switch connected, use a multimeter to check for voltage at the switch terminals when the ignition is on. This will help determine if the circuit is receiving power

  9. 9. Check for Shorts

    Ground Test: With the switch disconnected, check for continuity between the switch terminals and ground. A short to ground will show continuity

  10. 10. Inspect Ground Points

    Ensure that all ground points related to the seat and switch are clean and secure

  11. 11. Repair or Replace Components

    If you find damaged wiring, repair or replace the affected sections

  12. 12. If the switch is faulty, replace it with a new one

  13. 13. Clear Codes and Test Drive

    After making repairs, clear the trouble codes using a scan tool

  14. 14. Take the vehicle for a test drive to see if the code reappears

  15. 15. Professional Help

    If you are unable to resolve the issue after following these steps, consider seeking assistance from a professional mechanic or automotive technician. By following these steps, you should be able to identify and resolve the issue related to the B1708 code. Always ensure safety precautions are taken when working with electrical components in a vehicle