how to fix B0101 code in Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery and wait at least 10 minutes to ensure the airbag system is safe to work on.
• Tools required: OBD-II scanner, multimeter, socket set, and torx screwdriver.

2. Inspect and Repair Seat Belt Buckle

• Remove the seat cover: Use the socket set to remove any necessary bolts securing the driver's seat.
• Access the seat belt buckle: Unclip or remove any trim pieces that cover the seat belt buckle area.
• Inspect the connector: Ensure the electrical connector for the seat belt buckle is securely attached and free from corrosion.
• Test the seat belt buckle switch: Use a multimeter to check for continuity when the buckle is engaged and disengaged. Replace the buckle if it fails the test.

3. Wiring Inspection and Repair

• Examine the wiring harness: Look for any signs of damage or wear along the harness leading to the seat belt buckle.
• Repair any damaged wires: If fraying or breaks are found, splice or replace the wiring as necessary. Ensure all connections are secure and insulated.

4. Reassemble and Reset

• Reinstall any removed components: Replace the seat cover and secure all trim pieces.
• Reconnect the battery: Ensure the battery is securely reconnected.
• Clear the trouble codes: Use the OBD-II scanner to reset the B0101 code and any other related codes.