B1724 – Seat Driver Rearward Switch Circuit Short To Ground

The ODBII code B1724 indicates a malfunction in the driver rearward seat switch circuit, specifically that there is a short to ground, which means the circuit is unintentionally connected to the ground, causing improper operation of the seat adjustment function.

The severity of ODBII code B1724 is moderate.

Common Causes For: B1723 Seat Driver Rearward Switch Circuit Short To Battery

• Damaged wiring or connectors
• Faulty seat switch
• Short circuit in the wiring harness
• Corroded connectors
• Faulty seat control module
• Improper installation or modifications
• Water intrusion or moisture damage

Common misdiagnosis for B1724 Seat Driver Rearward Switch Circuit Short To Ground

• Faulty seat switch
• Wiring issues or shorts in the harness
• Malfunctioning body control module (BCM)
• Defective seat motor
• Incorrectly diagnosed seat position sensor
• Issues with the power supply or ground connections

Common Troubleshooting Steps

When dealing with an OBD-II code B1724, which indicates a “Seat Driver Rearward Switch Circuit Short To Ground,” you can follow these common troubleshooting steps:

• Verify the Code: Use an OBD-II scanner to confirm the presence of the B1724 code. Clear the code and see if it returns after a short drive.
• Inspect the Wiring and Connectors:
• Check the wiring harness and connectors associated with the driver seat switch. Look for any signs of damage, fraying, or corrosion.
• Pay special attention to areas where the wiring may be pinched or exposed to moisture.
• Check the Seat Switch:
• Test the driver seat switch for proper operation. Use a multimeter to check for continuity and resistance in the switch.
• If the switch is faulty, it may need to be replaced.
• Inspect the Ground Circuit:
• Check the ground connections related to the seat switch. Ensure that they are clean, tight, and free of corrosion.
• Use a multimeter to test for continuity to ground.
• Test the Power Supply:
• Verify that the seat switch is receiving the correct voltage. Use a multimeter to check the voltage at the switch connector.
• If there is no power, trace the wiring back to the fuse box and check for blown fuses or damaged wiring.
• Check for Short Circuits:
• Inspect the wiring for any shorts to ground. This can be done by visually inspecting the wiring and using a multimeter to check for continuity between the power wire and ground.
• If a short is found, repair or replace the damaged wiring.
• Scan for Additional Codes:
• Check for any other related trouble codes that may provide additional context or indicate other issues in the system.
• Consult Wiring Diagrams:
• Refer to the vehicle’s service manual for wiring diagrams specific to the seat switch circuit. This can help you understand the circuit layout and identify potential problem areas.
• Perform a System Reset:
• After repairs, clear the codes and perform a system reset. Monitor the system to see if the code returns.
• 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 diagnose and potentially resolve the issue related to the B1724 code.