Are you having trouble with your Toyota vehicle? Are you receiving a dreaded B1861/64 code? This code typically indicates an open in the driver side knee airbag squib circuit. This can be caused by a number of factors, from an instrument panel wire or the driver side airbag assembly to the center airbag sensor assembly malfunctioning. To help you understand the root cause of this issue and the possible solutions, we have provided a table below outlining the causes and solutions to the Toyota B1861/64 Code.
Toyota B1861/64 Code Causes and Solutions
| Cause | Solution |
|---|---|
| Instrument panel wire | Check for open or short in the wire harness. |
| Driver side knee airbag assembly | Replace the driver side knee airbag assembly. |
| Center airbag sensor assembly | Replace the center airbag sensor assembly. |
| Signal Plausibility Failure | Replace the control module. |
Instrument Panel Wire
The instrument panel wire can cause the Toyota B1861/64 Code to appear. This wire is responsible for sending the signal from the driver side knee airbag assembly to the center airbag sensor assembly. If either of these components is malfunctioning, then this code will appear. To fix this, you must check for an open or short in the wire harness.
Driver Side Knee Airbag Assembly
The driver side knee airbag assembly can be the cause of the Toyota B1861/64 Code. This component is responsible for detecting the presence of a passenger in the vehicle. If this component is not functioning correctly, then this code will appear. In this case, you will need to replace the driver side knee airbag assembly.
Center Airbag Sensor Assembly
The center airbag sensor assembly can also cause this code to appear. This component is responsible for sending signals to the control module when a passenger is present in the vehicle. If this component is malfunctioning, then this code will appear. To fix this, you will need to replace the center airbag sensor assembly.
Signal Plausibility Failure
A signal plausibility failure can also cause the Toyota B1861/64 Code to appear. This means that the control module has detected an anomaly in the signal sent from the driver side knee airbag assembly. To fix this, you must replace the control module.
Conclusion: Troubleshooting the Toyota B1861/64 Code
The Toyota B1861/64 Code is a dreaded code that can be caused by a number of components. The most common causes are an instrument panel wire, driver side knee airbag assembly, center airbag sensor assembly, or a signal plausibility failure. To troubleshoot this code, you must check for an open or short in the wire harness, replace the driver side knee airbag assembly, replace the center airbag sensor assembly, or replace the control module. Knowing the causes and solutions to the Toyota B1861/64 Code can help you properly diagnose and repair your vehicle.
https://www.youtube.com/watch?v=Syk7masHjtI