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System Diagram

Fig 1: Electric Steering Lock Diagram
GTY118817Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INPUT AND OUTPUT SIGNALS OF EACH ECU:

Transmitting ECU (transmitter) Receiving ECU Signals Communication Method
Main Body ECU Steering Lock ECU Power supply status (to steering lock motor) LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Sleep available status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Lock / Unlock sensor status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Steering lock status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Motor control status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Diagnostic response status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Lock / Unlock sensor malfunction LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Power supply malfunction
(to steering lock motor)		 LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Motor driver malfunction LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Lock bar (stuck) status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Push start status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Lock / Unlock relay drive status LIN
Steering Lock ECU
  • Certification ECU
  • Main Body ECU
  • ID Code Box
 Engine start control status LIN
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