B1708 – Seat Driver Recline Rearward Switch Circuit Short To Ground

The ODBII 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.

The severity of ODBII code B1708 is moderate.

Common Causes For: B1707 Seat Driver Recline Rearward Switch Circuit Short To Battery

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

Common misdiagnosis for B1708 Seat Driver Recline Rearward Switch Circuit Short To Ground

• 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

Common Troubleshooting Steps

When dealing with an OBD-II code B1708, which indicates a “Seat Driver Recline Rearward Switch Circuit Short To Ground,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• 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.
• 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.
• **Switch Condition: Check the recline switch for any physical damage or signs of wear.
• Check for Related Codes: Use a scan tool to check for any additional trouble codes that may provide more context or indicate related issues.
• 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.
• **Resistance Check: Measure the resistance across the switch terminals to see if it falls within the manufacturer’s specifications.
• 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.
• **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.
• 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.
• **Inspect Ground Points: Ensure that all ground points related to the seat and switch are clean and secure.
• Repair or Replace Components: If you find damaged wiring, repair or replace the affected sections.
• If the switch is faulty, replace it with a new one.
• Clear Codes and Test Drive: After making repairs, clear the trouble codes using a scan tool.
• Take the vehicle for a test drive to see if the code reappears.
• Consult Service Manual: If the issue persists, consult the vehicle’s service manual for specific troubleshooting procedures and specifications related to the seat recline system.
• 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.