System Diagram

Fig 1: Pre-Collision System Diagram

G05298005

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication table:

COMMUNICATION REFERENCE

Sender ECU	Receiver	Signal	Line
Distance Control ECU	Seat Belt Control ECU	Relative vehicle speed signal Vehicle-to-vehicle distance signal Seat belt operation signal	CAN
Skid Control ECU with Actuator (2GR - FSE) Skid Control ECU (3UZ - FE)	Seat Belt Control ECU	Vehicle speed signal Seat belt operation signal Stop light ON/OFF signal VSC control signal	CAN
Center Airbag Sensor Assembly	Seat Belt Control ECU	Buckle switch malfunction signal Driver seat belt buckle switch signal Passenger seat belt buckle switch signal	BEAN - CAN
Seat Belt Control ECU	Combination Meter	Pre-collision system malfunction signal	CAN - BEAN
Distance Control ECU	Skid Control ECU with Actuator (2GR-FSE) Skid Control ECU (3UZ-FE)	Brake assist standby signal	CAN