Toyota Camry Hybrid AHV40 Manual page 352

4. Function of Main Components
Component
Power Switch
D Transponder Key Amplifier
Key
Room Oscillator
D Front and Rear
Tuner
Main Body ECU
Certification ECU
Stop Light Switch
ID Code Box
Steering Lock ECU
THS ECU
Multi-information
Display
Combination Combination
Meter Master Warning
Light
BODY ELECTRICAL - SMART KEY SYSTEM
D Transmits the power switch signal to the main body ECU.
D Informs the driver of any power source or system abnormality
through the illumination stage of the indicator light.
D Receives the ID code and transmits it to the certification ECU
when the key battery is too weak to respond to the tuner based
on the room oscillators.
Receives the signals from the oscillators and returns the ID code
to the tuner. For details, see page BE-106.
Receives a request signal from the certification ECU and forms
the actuation area in the vehicle interior.
Receives the ID code from the key and transmits it to certification
ECU.
D Switches the power source among four modes (OFF, ACC,
IG-ON, and READY) in accordance with the shift position
and the state of the stop light switch.
D Controls the smart key system in accordance with the signals
received from the switches and each ECU.
Certifies the ID code received from the tuner and transmits the
certification results to the ID code box and steering lock ECU.
Outputs the state of the brake pedal to main body ECU.
Receives the HV immobilizer disengage/engage signal from the
certification ECU, certifies that signal, and transmits it to the
THS ECU.
Receives the steering unlock/lock signal from ID code box, and
activates the steering lock motor.
D Receives the THS II start request signal from the main body
ECU, and starts the THS II.
D Receives the HV immobilizer disengage/engage signal from
the ID code box, and disengages or engages the HV
immobilizer.
Informs the driver of malfunctions in the smart key system.
Illuminates simultaneously with a buzzer sound to inform the
driver of malfunctions in the smart key system.
Function
BE-91