B1706 – Seat Driver Recline Rearward Switch Circuit Open

The ODBII code B1706 indicates a malfunction in the driver seat recline rearward switch circuit, specifically that the circuit is open, meaning there is a break or disconnection preventing proper function.

The severity of ODBII code B1706 is generally considered moderate.

Common Causes For: B1705 Seat Driver Recline Rearward Switch Circuit Failure

• Faulty driver recline switch
• Damaged wiring or connectors
• Open circuit in the wiring harness
• Faulty seat control module
• Poor ground connection
• Corrosion or dirt in connectors
• Malfunctioning power seat motor

Common misdiagnosis for B1706 Seat Driver Recline Rearward Switch Circuit Open

• Faulty seat recline motor
• Wiring issues or shorts in the seat harness
• Malfunctioning body control module (BCM)
• Defective seat position sensor
• Issues with the power seat switch
• Problems with the vehicle’s electrical system
• Faulty ground connections

Common Troubleshooting Steps

When dealing with an OBD-II code B1706, which indicates a problem with the “Seat Driver Recline Rearward Switch Circuit Open,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check the Basics: **Battery Voltage:** Ensure the vehicle’s battery is fully charged and in good condition.
• **Fuses:** Inspect the fuses related to the seat control system. A blown fuse can cause circuit issues.
• Visual Inspection: **Wiring and Connectors:** Examine the wiring harness and connectors associated with the driver’s seat recline switch. Look for signs of damage, corrosion, or loose connections.
• **Switch Condition:** Check the recline switch itself for any physical damage or wear.
• Test the Switch: **Continuity Test:** Use a multimeter to check for continuity in the switch. Disconnect the switch and test the terminals to ensure it is functioning properly.
• **Functionality Check:** If possible, test the switch by applying power directly to see if it operates the recline mechanism.
• Inspect the Seat Control Module: **Module Connections:** Ensure that the seat control module is properly connected and that there are no damaged pins or connectors.
• **Module Functionality:** If you have access to a scan tool, check for any additional codes or data related to the seat control module.
• Check for Shorts or Opens: **Wiring Inspection:** Use a multimeter to check for shorts to ground or opens in the wiring between the switch and the seat control module.
• **Resistance Check:** Measure the resistance of the circuit to ensure it is within specifications.
• Scan for Additional Codes: **Diagnostic Scan:** Use an OBD-II scanner to check for any other related trouble codes that may provide additional context for the issue.
• Clear Codes and Test Drive: **Clear Codes:** After performing the above checks and repairs, clear the trouble codes using a scan tool.
• **Test Drive:** Take the vehicle for a test drive to see if the code reappears.
• Consult Service Manual: If the issue persists, refer to the vehicle’s service manual for specific wiring diagrams and troubleshooting procedures related to the seat recline system.
• Professional Help: If you are unable to resolve the issue after these steps, consider seeking assistance from a professional mechanic or an automotive technician who specializes in electrical systems. By following these steps, you should be able to identify and potentially resolve the issue related to the B1706 code.