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System Diagram [12/2015 - ]

Fig 1: Steering Lock System Diagram
GTY300570Courtesy 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
Sleep available status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Lock/unlock sensor status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Steering lock status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Motor control status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Diagnostic response status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Lock/unlock sensor malfunction LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Power supply malfunction
(to steering lock motor)
LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Motor driver malfunction LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Lock bar (stuck) status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Push start status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
Lock/unlock relay drive status LIN
Steering lock actuator assembly (steering lock ECU)
  • Certification ECU
  • Power management control ECU
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