July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

System Diagram

Fig 1: Audio System Diagram

G03002671

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Input and output signals of each ECU.

TRANSMITTING ECU (TRANSMITTER) CHART

Transmitting ECU (Transmitter)	Receiving ECU	Signals	Communication method
Driver Side J/B ECU	Steering Pad Switch	ACC SW Signal	BEAN (Column Bus)
Driver Side J/B ECU	Steering Pad Switch	Taillight ON Signal	BEAN (Column Bus)
Steering Pad Switch	Radio Receiver Assy	Audio Signal	BEAN (Column Bus) AVC-LAN