how to resolve B0031 code on my Toyota Camry XV50 (2012-2017)?

Solution

1. Preparation

• Gather tools and parts required for repair.
• Disconnect the negative battery terminal to ensure safety while working on the airbag system.
• Wait at least 90 seconds to ensure all systems are powered down.

2. Inspect Airbag Connector

• Locate the driver's side airbag connector under the steering column.
• Disconnect the connector by pressing the release tab and pulling it apart.
• Inspect the connector for signs of corrosion, bent pins, or damage. Clean or replace as necessary.

3. Check Wiring Harness

• Visually inspect the wiring harness leading to the airbag for any signs of fraying or physical damage.
• Use a multimeter to check for continuity in the wiring harness.
• Repair or replace any damaged sections of the wiring harness.

4. Test Airbag Squib Circuit

• Reconnect the airbag connector after inspection.
• Use a multimeter to measure the resistance of the squib circuit, which should typically be within the manufacturer's specified range (consult repair manual for exact values).
• If resistance is outside the normal range, replace the airbag module.

5. Reassemble and Reconnect

• Reconnect the negative battery terminal.
• Ensure all components are securely fastened and that tools are removed from the vehicle.