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Home >> Lexus >> 2011 >> HS 250h >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System With Push-Button Start (For Entry Function) (Diagnostics - Introduction) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) >> System Diagram >> System Diagram
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System Diagram

Fig 1: Smart Access System With Push-Button Start System Diagram (For Entry Function) (1 Of 2)
GTY357217Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Smart Access System With Push-Button Start System Diagram (For Entry Function) (2 Of 2)
GTY358013Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
COMMUNICATION TABLE

Transmitting ECU (Transmitter) Receiving ECU Signal Communication Method
Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly) Courtesy light switch signal CAN
Door lock output signal
Door lock position switch signal
Driver door key operated switch signal
IG signal
ACC switch signal
Certification ECU (smart key ECU assembly) Main body ECU (multiplex network body ECU) Illumination light request signal CAN
Light answer back signal
Door lock/unlock request signal
Luggage compartment door output request signal
Wireless door lock buzzer request signal
Certification ECU (smart key ECU assembly) Combination meter assembly Meter buzzer single tone request signal CAN
Meter buzzer intermittent tone request signal
Meter buzzer continuous tone request signal
Key loss warning signal
Auto power off operation request signal
Key not detected warning signal
Low key battery warning signal
Shift position warning signal
Immobilizer system certification completion signal
Emergency operation support display request signal
Hybrid control system start method display request signal
Combination meter assembly
  • Certification ECU (smart key ECU assembly)
  • Main body ECU (multiplex network body ECU)
Vehicle speed signal CAN