Air Bag Sensor Assembly
WARNING: This page is about a different car, the 2002 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
The air bag sensor assembly is located on the floor inside lower center cluster finish panel. It consists of an air bag sensor and safing sensor, and diagnosis, ignition control and drive circuits. It receives signals from the air bag sensor and determines whether air bag system must be deployed or not.