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Home >> Lexus >> 2012 >> IS 350C >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Pre-Collision System (Diagnostics - Introduction) >> Pre-Collision System >> System Diagram >> System Diagram

System Diagram

Fig 1: Pre-Collision System Diagram (1 Of 2)
GTY132787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Pre-Collision System Diagram (2 Of 2)
GTY347632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
COMMUNICATION TABLE

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
  • Brake warning buzzer request signal
  • CAN
Skid Control ECU Combination Meter
  • Brake warning display request
  • CAN
  • BEAN
Combination Meter Skid Control ECU
  • Pre-collision brake off signal
  • CAN
  • BEAN
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