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Home >> Lexus >> 2010 >> ES 350 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (Keyless Entry) (Diagnostics - Introduction) >> Smart Access System With Push-Button Start >> System Diagram >> System Diagram
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System Diagram

Fig 1: Identifying Smart Access System Diagram With Push-Button Start (1 Of 2)
GTY129717Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Identifying Smart Access System Diagram With Push-Button Start (2 Of 2)
GTY257737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Transmitting ECU (Transmitter) Receiving ECU Signals Communication method
Main body ECU Certification ECU Engine switch position signal CAN
Courtesy light switch signal
Door lock output signal
Luggage compartment door output request signal
Wireless door lock buzzer request signal
Door lock position switch signal
D/P door key operated switch signal
Luggage compartment door key operated switch signal
Main body ECU Combination meter Wireless door lock buzzer request signal CAN
Certification ECU Main body ECU Illumination light request signal CAN
Light answer back signal
Door lock/unlock request signal
Certification ECU Driver seat ECU Memory call replay request signal CAN
Certification ECU Combination meter Meter buzzer single-shot request signal CAN
Meter buzzer intermittence request signal
Meter buzzer continuation request signal
Door open display signal
Keyloss warning signal
Low key battery warning signal
Shift position warning signal
Steering lock abnormal warning
Steering lock unlock warning
Combination meter Certification ECU/Main body ECU Vehicle speed signal CAN
ID code box Certification ECU Matching request random number signal LIN
EEP ROM access malfunction
Model code matching signal
Model code mismatching signal
ECM code receiving status
Engine start permission request signal
Engine start permission response signal
S code matching result signal
S code registration status signal
S code registration mode signal
L code matching result signal
ECM communication signal
Registered key number response signal
Diagnosis mode switching signal
Registered key number signal
Certification ECU ID code box 3 bit code request signal LIN
ID code matching result signal
Registered key number signal
Vehicle type handle signal
Certification ECU
  • ID code box
  • Steering lock ECU
L code registration mode signal LIN
Diagnosis mode request signal
DTC clear request signal
L code registration status signal
Steering lock ECU
  • Certification ECU
  • ID code box
Steering lock request signal LIN
Steering unlock signal
Steering lock confirmation signal
Steering unlock confirmation signal
Diagnosis response signal
Steering unlock drive relay signal
Steering lock drive relay signal
Steering lock motor operation signal
Main body ECU Certification ECU Shift position P signal LIN
Engine starting status signal
ACC relay operating status signal
IG relay operating status signal
Main body ECU Steering lock ECU Steering lock relay power supply status signal LIN
Steering lock ECU
  • Certification ECU
  • Main body ECU
Steering lock catching malfunction signal LIN
Push button start malfunction signal
Engine operation signal