B1702 – Seat Driver Recline Forward Switch Circuit Open

The ODBII code B1702 indicates that there is an open circuit in the driver seat recline forward switch, meaning the switch is not functioning properly or is disconnected.

The severity of ODBII code B1702 is generally considered moderate.

Common Causes For: B1701 Seat Driver Recline Forward Switch Circuit Failure

• Faulty driver recline switch
• Open circuit or broken wiring
• Poor electrical connections
• Faulty seat control module
• Corroded connectors
• Blown fuse related to the seat system
• Malfunctioning seat position sensor

Common misdiagnosis for B1702 Seat Driver Recline Forward Switch Circuit Open

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

Common Troubleshooting Steps

The OBD-II code B1702 indicates a problem with the driver seat recline forward switch circuit, specifically that the circuit is open. Here are some common troubleshooting steps to diagnose and potentially resolve this issue:

• Check the Vehicle’s Manual: Refer to the vehicle’s service manual for specific information regarding the seat recline switch circuit and wiring diagrams.
• Visual Inspection:
• Inspect the wiring harness and connectors associated with the driver seat recline switch for any visible damage, corrosion, or loose connections.
• Look for any signs of wear, fraying, or broken wires.
• Test the Switch:
• Use a multimeter to test the driver seat recline switch for continuity. Disconnect the switch and check for continuity when the switch is activated.
• If the switch is faulty, it may need to be replaced.
• Check for Power and Ground:
• With the switch disconnected, check for power and ground at the connector using a multimeter. Ensure that the circuit is receiving the correct voltage.
• If there is no power or ground, trace the wiring back to the source to identify any breaks or shorts.
• Inspect the Seat Control Module:
• If the vehicle has a seat control module, check for any fault codes stored in the module. This may provide additional insight into the issue.
• Ensure that the module is functioning correctly and that there are no communication issues.
• Check for Short Circuits:
• Inspect the wiring for any short circuits that may be causing the open circuit condition. This can include checking for pinched wires or contact with metal surfaces.
• Clear the Code:
• After performing the above checks and repairs, clear the trouble code using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Professional Diagnosis:
• If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who can perform more advanced diagnostics. By following these steps, you should be able to identify and resolve the issue related to the B1702 code. Always ensure safety precautions are taken when working with electrical components in a vehicle.