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Home >> Lexus >> 2009 >> ES 350 >> Repair and Diagnosis (Single Page) >> Steering >> Steering Column >> Steering Column / Electric Steering Lock (Service Information & Diagnostics) >> Electric Steering Lock >> System Diagram >> System Diagram

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