Air Bag Sensor Assembly
WARNING: This page is about a different car, the 2002 Lexus ES 300. 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 behind lower center finish panel. It consists of an air bag sensor, safing sensor and diagnosis, ignition and drive circuits. It receives signals from the air bag sensor and determines whether air bag modules must be deployed or not.