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System Diagram

Fig 1: Pre-Collision System Diagram
G05251338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication table: 

COMMUNICATION CHART

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 Seat Belt Control ECU
  • Seat belt operation signal
  • Sudden braking signal
  • VSC control signal
  • Vehicle speed 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
 CAN
Seat Belt Control ECU Combination Meter
  • Pre-collision malfunction signal
 CAN
Distance Control ECU Skid Control ECU
  • Brake assist standby signal
 CAN
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