FixVault

Section 249 (System Wiring Diagrams): Anti-Theft

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Forced Entry Circuit (1 of 3)
Fig 2: Forced Entry Circuit (2 of 3)
Fig 3: Forced Entry Circuit (3 of 3)
Fig 4: Immobilizer Circuit