System Diagram

Fig 1: Identifying Window Defogger System Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

COMMUNICATION TABLE

Sender	Receiver	Signal	Line
Multi-display	A/C amplifier assembly (A/C ECU)	Rear defogger switch signal	BEAN / AVC-LAN
A/C amplifier assembly (A/C ECU)	ECM	Rear defogger switch signal	BEAN / CAN