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System Diagram

Fig 1: Pre-Collision System Diagram
G05298005Courtesy 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
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