| Certification ECU (smart key ECU assembly) |
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Distinguishes and verifies the ID code from the door control receiver and sends signals to the steering lock actuator assembly (steering lock ECU), etc. in response to operated functions.
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Performs code communication with the ID code box (immobiliser code ECU) and steering lock actuator assembly (steering lock ECU) when the engine is started.
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| Engine switch |
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Sends engine switch operation signals to the certification ECU (smart key ECU assembly).
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Uses the built-in transponder key amplifier to receive the ID code from the key when the transmitter battery is depleted, and sends the code to the certification ECU (smart key ECU assembly).
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| ID code box (immobiliser code ECU) |
Receives immobiliser set/unset commands from the certification ECU (smart key ECU assembly) via LIN communication and sends them to the ECM. |
| ECM |
Receives immobiliser unset commands from the ID code box (immobiliser code ECU) and engine start request signals from the certification ECU (smart key ECU assembly) and starts the engine. |
| Steering lock actuator assembly (steering lock ECU) |
Receives a steering lock unlock signal from the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) and unlocks the steering lock. |
