WARNING: This page is about a different car, the 2004 Toyota Matrix and 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Air Bag System Wiring Diagram (Corolla-1 Of 2)
Fig 2: Air Bag System Wiring Diagram (Corolla-2 Of 2)
Fig 3: Air Bag System Wiring Diagram (Matrix-1 Of 2)
Fig 4: Air Bag System Wiring Diagram (Matrix-2 Of 2)