B1760 – Seat Driver Rear Down Circuit Short To Ground

The ODBII code B1760 indicates a malfunction in the driver rear seat’s down adjustment circuit, specifically a short to ground, which means there is an unintended connection to the vehicle’s ground, preventing the seat from moving down properly.

The severity of ODBII code B1760 is generally considered moderate.

Common Causes For: B1759 Seat Driver Rear Down Circuit Short To Battery

• Damaged wiring or connectors
• Shorted seat motor
• Faulty seat switch
• Corroded terminals
• Grounding issues
• Malfunctioning body control module (BCM)

Common misdiagnosis for B1760 Seat Driver Rear Down Circuit Short To Ground

• Faulty seat switch
• Damaged wiring harness
• Defective seat motor
• Malfunctioning body control module (BCM)
• Incorrectly installed or loose connectors
• Shorted or damaged ground connections
• Issues with the power supply to the seat system

Common Troubleshooting Steps

When dealing with an OBD-II code B1760, which indicates a “Seat Driver Rear Down 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:

• Verify the Code: Use an OBD-II scanner to confirm the presence of the B1760 code.
• Check for any additional codes that may provide more context or related issues.
• Inspect the Wiring and Connectors: **Visual Inspection: Check the wiring harness and connectors associated with the seat adjustment mechanism for any visible damage, fraying, or corrosion.
• **Connector Condition: Ensure that all connectors are securely attached and free of dirt or moisture.
• Check for Shorts to Ground: **Multimeter Testing: Use a multimeter to check for continuity between the seat motor circuit and ground. A short to ground will show continuity where it shouldn’t exist.
• **Wiring Harness: Trace the wiring from the seat motor back to the control module to identify any points where the wire may be pinched or damaged.
• Inspect the Seat Motor: **Motor Functionality: Test the seat motor by applying direct power to it (if safe to do so) to see if it operates correctly.
• **Resistance Check: Measure the resistance of the motor windings to ensure they are within specifications.
• Check the Seat Control Module: **Module Functionality: If applicable, check the seat control module for proper operation. This may involve checking for software updates or faults in the module itself.
• **Power and Ground: Ensure that the control module is receiving proper power and ground signals.
• Inspect Related Components: **Switches: Check the seat adjustment switch for proper operation. A faulty switch can sometimes cause a short circuit.
• **Fuses: Inspect any related fuses for continuity. A blown fuse may indicate an underlying issue.
• Clear the Code and Test Drive: After performing the above checks and repairs, clear the code using the OBD-II scanner.
• Take the vehicle for a test drive to see if the code returns.
• Consult Service Manual: If the issue persists, refer to the vehicle’s service manual for specific diagnostic procedures related to the B1760 code. This may include wiring diagrams and component locations.
• Seek Professional Help: If you are unable to resolve the issue after these steps, consider seeking assistance from a professional mechanic or automotive technician who has experience with electrical systems. By following these steps, you should be able to identify the cause of the B1760 code and take appropriate action to resolve the issue.