what does it mean if my Toyota RAV4 has a B0191 code?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery and wait at least 10 minutes to ensure the airbag system discharges.
• Ensure the work area is safe and well-lit.

2. Inspect and Repair Wiring

• Tools Required: Wire strippers, electrical tape, multimeter
• Inspect the wiring harness leading to the driver's side airbag for any frays or damage.
• Repair any damaged wiring by cutting out the damaged section and using solder and heat shrink tubing for a secure connection.
• Ensure all connections are tight and properly insulated with electrical tape.

3. Replace Airbag Connector

• Tools Required: Socket set, Torx driver
• Remove the driver's side airbag module by unscrewing it from the steering wheel using the appropriate socket or Torx driver.
• Disconnect the airbag connector carefully, ensuring no pins are bent.
• Replace it with a new connector if damaged, and reconnect it securely.

4. Replace Airbag Module (if necessary)

• Tools Required: Socket set
• If the airbag module is faulty, remove it by unscrewing the mounting bolts and disconnecting the wiring harness.
• Install a new airbag module, ensuring it is securely fastened and connected.
• Double-check all connections before proceeding.

5. Reconnect Battery and Test

• Reconnect the vehicle battery.
• Clear any diagnostic codes using an OBD-II scanner.
• Start the vehicle and check if the airbag warning light remains off.