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Home >> Toyota >> 2013 >> Prius Plug-in >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Smart Key System (For Entry Function) (Diagnostics - Introduction) (Plug-In) >> SMART KEY SYSTEM (for Entry Function) >> System Diagram >> System Diagram
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System Diagram

  1. w/ Entry System Back Door Open Function: 
    Fig 1: Identifying Smart Key System Diagram (1 Of 2)
    GTY331236Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Identifying Smart Key System Circuit Diagram (2 Of 2)
    GTY327798Courtesy 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
    Back 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
    Immobiliser system certification completion signal
    Emergency operation support display request signal
    Hybrid vehicle 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
  2. w/o Entry System Back Door Open Function: 
    Fig 3: Identifying Smart Key System Diagram (1 Of 2)
    GTY337187Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Identifying Smart Key System (w/o Entry System) Circuit Diagram (2 Of 2)
    GTY332334Courtesy 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
    Back 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
    Immobiliser system certification completion signal
    Emergency operation support display request signal
    Hybrid vehicle 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
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