B1660 – Seat Driver Front Up Circuit Open
The ODBII code B1660 indicates that there is an open circuit in the driver front seat’s up adjustment mechanism, meaning the system is unable to detect the seat’s upward movement due to a potential wiring issue or a malfunction in the seat adjustment motor.
The severity of ODBII code B1660 is moderate.
Common Causes For: B1659 Seat Driver Front Up Circuit Failure
- Faulty seat position sensor
- Damaged wiring or connectors
- Open circuit in the seat motor circuit
- Failed seat motor
- Malfunctioning body control module (BCM)
- Poor ground connection
- Corroded or loose electrical connections
Common misdiagnosis for B1660 Seat Driver Front Up Circuit Open
- Faulty seat switch
- Wiring issues or shorts
- Defective seat motor
- Malfunctioning body control module (BCM)
- Poor ground connection
- Faulty connectors or terminals
- Issues with the power supply to the seat system
Common Troubleshooting Steps
The OBD-II code B1660 indicates a problem with the driver’s front seat up circuit, specifically that the circuit is open. This can be caused by various issues, including wiring problems, faulty components, or issues with the seat control module. Here are some common troubleshooting steps to diagnose and resolve the issue:
- Check for Additional Codes: Use an OBD-II scanner to check for any other related trouble codes that may provide more context to the issue.
- Inspect Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors associated with the driver’s seat. Look for any signs of damage, fraying, or corrosion.
- **Connector Integrity: Ensure that all connectors are securely attached and free of dirt or moisture.
- Test the Seat Motor: **Functionality Test: If possible, manually test the seat adjustment motor to see if it operates correctly. You can do this by applying power directly to the motor (ensure you follow safety precautions).
- **Resistance Check: Measure the resistance of the motor. If it is outside the manufacturer’s specifications, the motor may be faulty.
- Check the Seat Control Module: **Module Functionality: If the vehicle is equipped with a seat control module, check its functionality. This may involve testing the module with a scan tool or replacing it if it is suspected to be faulty.
- **Software Updates: Check if there are any software updates available for the seat control module.
- Inspect Fuses: Check the fuse related to the seat adjustment system. A blown fuse can cause the circuit to be open.
- Test the Switch: **Switch Functionality: Test the seat adjustment switch for proper operation. A faulty switch can prevent the seat from moving and may cause the circuit to show as open.
- **Continuity Test: Use a multimeter to check for continuity in the switch when it is activated.
- Check Ground Connections: Ensure that all ground connections related to the seat adjustment system are secure and free of corrosion. A poor ground can lead to circuit issues.
- Perform a Circuit Test: Use a multimeter to perform a continuity test on the circuit from the seat motor to the control module. Look for any breaks in the circuit.
- Consult Wiring Diagrams: Refer to the vehicle’s wiring diagrams to understand the circuit layout and identify any potential points of failure.
- Clear Codes and Test Drive: After performing repairs, clear the trouble codes and take the vehicle for a test drive to see if the code returns.1
- Seek Professional Help: If the issue persists after performing these steps, it may be necessary to consult a professional mechanic or technician who has experience with automotive electrical systems. By following these troubleshooting steps, you should be able to identify and resolve the issue related to the B1660 code. Always refer to the vehicle’s service manual for specific procedures and specifications.