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System Diagram

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pre-Collision System Diagram (1 Of 2)
G05754803Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Pre-Collision System Diagram (2 Of 2)
G05754804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication Table 

SIGNAL REFERENCE

Sender 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
  • 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
  • BEAN
Distance Control ECU Skid Control ECU
  • Brake assist standby signal
  • CAN
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