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System Diagram [08/2019 - ]

  1. SMART KEY SYSTEM (for Start Function) 
    Fig 1: Smart Key System (for Start Function) (1 Of 5)
    GTY879055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Smart Key System (for Start Function) (2 Of 5)
    GTY933993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Smart Key System (for Start Function) (3 Of 5)
    GTY889464Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Smart Key System (for Start Function) (4 Of 5)
    GTY877079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 5: Smart Key System (for Start Function) (5 Of 5)
    GTY883595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Component Outline
    Engine switch
    • Transponder key amplifier
    • Turns on the power and starts the engine.
    • Contains a built-in transponder key amplifier to start the engine when the electrical key transmitter sub-assembly does not operate properly due to a depleted battery or wave interference.
    Certification ECU (smart key ECU assembly)
    • Changes the power source mode by operating the ACC and IG relays.
    • Controls starting by operating the starter relay.
    • Performs key verification.
    • Controls the electrical key antenna (outside), electrical key antenna (indoor) and door lock/unlock sensor.
    • Outputs entry door lock/unlock commands.
    • Outputs steering lock ECU (upper steering column with switch bracket assembly) lock/unlock command signals.
    • Outputs immobiliser set/unset commands.
    • Forms the smart key system detection area.
    ECM Outputs a signal indicating that the engine has started to the certification ECU (smart key ECU assembly) when starting the engine.
    Steering lock ECU (upper steering column with switch bracket assembly)
    • Receives command signals from the certification ECU (smart key ECU assembly) and activates the steering lock ECU (upper steering column with switch bracket assembly).
    • Records codes for entry verification.
    Combination meter assembly
    • Displays various warnings according to the command signals from the certification ECU (smart key ECU assembly).
    • Outputs a vehicle speed signal to the ECUs.
    IG, ACC relay Turns on/off according to the certification ECU (smart key ECU assembly) and provides power to each system.
    Stop light switch assembly Detects that the brake pedal has been depressed (switch is on) and outputs a signal to the certification ECU (smart key ECU assembly).
    • No. 1 indoor electrical key antenna assembly (front floor)
    • No. 2 indoor electrical key antenna assembly (rear floor)
    		 Sends the request code from the certification ECU (smart key ECU assembly) and forms the vehicle interior detection area.
  2. SMART KEY SYSTEM (for Entry Function) 

    Refer to SYSTEM DIAGRAM [08/2019 - ]

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