Circuit Description
WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
The passenger's rear door courtesy switch signals are transmitted to the body ECU. If the key is in the ignition switch and the passenger's rear door is open, the body ECU will unlock doors if doors are locked. For circuit identification, see Fig 1.