Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Toyota >> 2011 >> Highlander SE, 2.7 A >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Lock System (Diagnostics - Introduction) >> Steering Lock System >> System Diagram >> System Diagram

System Diagram

Fig 1: Identifying Steering Lock System Diagram
GTY182901Courtesy 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 (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Sleep available status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Lock / Unlock sensor status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Steering lock status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Motor control status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Diagnostic response status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Lock / Unlock sensor malfunction LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Power supply malfunction
(to steering lock motor)
LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Motor driver malfunction LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Lock bar (stuck) status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Push start status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Lock / Unlock relay drive status LIN
Steering Lock ECU
  • Certification ECU (Smart key ECU assembly)
  • Main Body ECU
  • ID Code Box (Immobiliser code ECU)
Engine start control status LIN