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System Diagram [08/2013 - ]

Fig 1: Steering Lock System Diagram
GTY254118Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INPUT AND OUTPUT SIGNALS OF EACH ECU

Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method
Power Source Control ECU Steering Lock ECU Power supply status (to steering lock motor) LIN
Steering Lock ECU Certification ECU Sleep available status LIN
Steering Lock ECU
  • Certification ECU
  • Power Source Control ECU
 Lock/Unlock sensor status LIN
Steering Lock ECU Certification ECU Steering lock status LIN
Steering Lock ECU Certification ECU Motor control status LIN
Steering Lock ECU Certification ECU Diagnostic response status LIN
Steering Lock ECU Certification ECU Lock/Unlock sensor malfunction LIN
Steering Lock ECU Certification ECU Power supply malfunction
(to steering lock motor)		 LIN
Steering Lock ECU Certification ECU Motor driver malfunction LIN
Steering Lock ECU
  • Certification ECU
  • Power Source Control ECU
 Lock bar (stuck) status LIN
Steering Lock ECU
  • Certification ECU
  • Power Source Control ECU
 Push start status LIN
Steering Lock ECU Certification ECU Lock/Unlock relay drive status LIN
Steering Lock ECU
  • Certification ECU
  • Power Source Control ECU
 Engine start control status LIN
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