Circuit Description
WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.
When +B short or GND short occurs in this AVC- LAN, audio system will not function normally as communication is discontinued.
In this AVC-LAN, the radio receiver assy becomes the master of the communication, and the radio receiver assy has resistance necessary for transmitting the communication.