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System Diagram [08/2015 - 08/2019]

Fig 1: Steering Lock System Diagram
GTY222866Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INPUT AND OUTPUT SIGNAL OF EACH ECU

Transmitting ECU (Transmitter) Receiving ECU (Receiver) Signal Communication Method
Power management control ECU Steering lock actuator assembly (steering lock ECU) Power supply status (to steering lock motor) LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Sleep available status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Lock/unlock sensor status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Steering lock status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Motor control status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Diagnostic response status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Lock/unlock sensor malfunction LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Power supply malfunction
(to steering lock motor)		 LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Motor driver malfunction LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Lock bar (stuck) status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Push start status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Lock/unlock relay drive status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
  • ID code box
 Engine start control status LIN
Certification ECU Steering lock actuator assembly (steering lock ECU) Lock/unlock request LIN
Main body ECU
  • Certification ECU
  • Power management control ECU
 Driver side door courtesy switch signal CAN
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