ENGINE IMMOBILISER SYSTEM (w/ Entry and Start System) - SYSTEM DESCRIPTION

When the driver (or an occupant) gets in the vehicle and depresses the brake pedal and clutch pedal while carrying the key, the main body ECU recognizes that the brake pedal and clutch pedal have been depressed and sends a key certification request signal to the certification ECU (smart key ECU assembly). Then the certification ECU (smart key ECU assembly) generates a request signal and sends it to the indoor electrical key oscillator. When the request signal is received, the indoor electrical key oscillator sends another request signal in order to detect whether the key is inside the vehicle. When the key receives this request signal, it sends back an ID code which includes a response code. The ID code sent from the key is sent to the certification ECU (smart key ECU assembly) via the door control receiver. When the ID code is received, the certification ECU (smart key ECU assembly) analyzes the code. If the certification result is normal, the certification ECU (smart key ECU assembly) sends a key certification compatible response signal to the main body ECU. At this time, the engine switch indicator illuminates in green. When the indicator illuminates in green and the driver presses the engine switch, the main body ECU recognizes the engine start signal, changes the ACC relay to on, and changes the IG1 and IG2 relays to on in that order after 0.025 seconds. At this time, the certification ECU (smart key ECU assembly) confirms that the power source mode has changed, and sends a steering unlock command signal to the main body ECU. After this signal is received, the main body ECU supplies the steering lock actuator with power. Then (via the ID code box (immobiliser code ECU)) the steering lock ECU confirms that the certification ECU (smart key ECU assembly) is the proper ECU, and drives the steering actuator motor until the steering lock is unlocked. After the steering lock is unlocked, the steering lock ECU sends an unlock completion signal to the certification ECU (smart key ECU assembly) and main body ECU. When this signal is received, the certification ECU (smart key ECU assembly) sends an immobiliser unset command signal to the ID code box (immobiliser code ECU). Once this signal is received, the ID code box (immobiliser code ECU) sends an immobiliser unset command signal to the SFI system*1 or ECD system*2 after confirming that the certification ECU (smart key ECU assembly) is the proper ECU. Then the certification ECU (smart key ECU assembly) sends a security indicator light off signal to the clock*3 or multi-display*4.

• HINT:

When the driver (or an occupant) gets in the vehicle and depresses the brake pedal while carrying the key, the main body ECU recognizes that the brake pedal has been depressed and sends a key certification request signal to the certification ECU (smart key ECU assembly). Then the certification ECU (smart key ECU assembly) generates a request signal and sends it to the indoor electrical key oscillator. When the request signal is received, the indoor electrical key oscillator sends another request signal in order to detect whether the key is inside the vehicle. When the key receives this request signal, it sends back an ID code which includes a response code. The ID code sent from the key is sent to the certification ECU (smart key ECU assembly) via the door control receiver. When the ID code is received, the certification ECU (smart key ECU assembly) analyzes the code. If the certification result is normal, the certification ECU (smart key ECU assembly) sends a key certification compatible response signal to the main body ECU. At this time, the engine switch indicator illuminates in green. When the indicator illuminates in green and the driver presses the engine switch, the main body ECU recognizes the engine start signal, changes the ACC relay to on, and changes the IG1 and IG2 relays to on in that order after 0.025 seconds. At this time, the certification ECU (smart key ECU assembly) confirms that the power source mode has changed, and sends a steering unlock command signal to the main body ECU. After this signal is received, the main body ECU supplies the steering lock actuator with power. Then (via the ID code box (immobiliser code ECU)) the steering lock ECU confirms that the certification ECU (smart key ECU assembly) is the proper ECU, and drives the steering actuator motor until the steering lock is unlocked. After the steering lock is unlocked, the steering lock ECU sends an unlock completion signal to the certification ECU (smart key ECU assembly) and main body ECU. When this signal is received, the certification ECU (smart key ECU assembly) sends an immobiliser unset command signal to the ID code box (immobiliser code ECU). Once this signal is received, the ID code box (immobiliser code ECU) sends an immobiliser unset command signal to the SFI system*1 or ECD system*2 after confirming that the certification ECU (smart key ECU assembly) is the proper ECU. Then the certification ECU (smart key ECU assembly) sends a security indicator light off signal to the clock*3 or multi-display*4.

• HINT:

When the driver is sitting in the vehicle while carrying the key and the brake pedal and the clutch pedal are depressed, the main body ECU recognizes that the stop light switch is on and sends a key confirmation request signal to the certification ECU (smart key ECU assembly). Upon receipt of this signal, the certification ECU (smart key ECU assembly) drives the motor of the engine switch built-in immobiliser amplifier. At this time, the engine switch outputs an RF (Radio Frequency) wave communication signal. If the driver holds the key up to the engine switch at this time, the key receives the immobiliser RF (Radio Frequency) wave signal and responds by sending a radio wave signal. When the engine switch receives the radio wave signal from the key, it duplicates the signal and sends an ID code to the certification ECU (smart key ECU assembly). Upon receipt of the ID code, the code is analyzed. If the certification passes, a key certification pass response signal is sent to the main body ECU while simultaneously sending a sound buzzer request signal to the meter ECU. When the main body ECU receives this signal, the ACC relay is switched on and the IG1 and IG2 relays are switched on in sequence after 0.025 seconds. At this time, the engine switch indicator illuminates in green. Then the certification ECU (smart key ECU assembly) checks that the power source mode has been changed and sends a steering lock command signal to the main body ECU. After receiving this signal, the main body ECU supplies power to the steering lock actuator. Then (via the ID code box (immobiliser code ECU)) the steering lock ECU confirms that the certification ECU (smart key ECU assembly) is certified and drives the steering actuator motor until the steering lock is unlocked. After unlocking the steering lock, an unlock completed signal is sent to the certification ECU (smart key ECU assembly). Upon receipt of this signal, the certification ECU (smart key ECU assembly) sends an unset command signal to the ID code box (immobiliser code ECU). Once this signal is received, the ID code box (immobiliser code ECU) confirms that the certification ECU (smart key ECU assembly) is certified, sends an immobiliser unset command signal to the SFI system*1 or ECD system*2, and then the certification ECU (smart key ECU assembly) sends a security indicator light off signal to the clock*3 or multi-display*4.

• HINT:

When the driver is sitting in the vehicle while carrying the key and the brake pedal is depressed, the main body ECU recognizes that the stop light switch is on and sends a key confirmation request signal to the certification ECU (smart key ECU assembly). Upon receipt of this signal, the certification ECU (smart key ECU assembly) drives the motor of the engine switch built-in immobiliser amplifier. At this time, the engine switch outputs an RF (Radio Frequency) wave communication signal. If the driver holds the key up to the engine switch at this time, the key receives the immobiliser RF (Radio Frequency) wave signal and responds by sending a radio wave signal. When the engine switch receives the radio wave signal from the key, it duplicates the signal and sends an ID code to the certification ECU (smart key ECU assembly). Upon receipt of the ID code, the code is analyzed. If the certification passes, a key certification pass response signal is sent to the main body ECU while simultaneously sending a sound buzzer request signal to the meter ECU. When the main body ECU receives this signal, the ACC relay is switched on and the IG1 and IG2 relays are switched on in sequence after 0.025 seconds. At this time, the engine switch indicator illuminates in green. Then the certification ECU (smart key ECU assembly) checks that the power source mode has been changed and sends a steering lock command signal to the main body ECU. After receiving this signal, the main body ECU supplies power to the steering lock actuator. Then (via the ID code box (immobiliser code ECU)) the steering lock ECU confirms that the certification ECU (smart key ECU assembly) is certified and drives the steering actuator motor until the steering lock is unlocked. After unlocking the steering lock, an unlock completed signal is sent to the certification ECU (smart key ECU assembly). Upon receipt of this signal, the certification ECU (smart key ECU assembly) sends an unset command signal to the ID code box (immobiliser code ECU). Once this signal is received, the ID code box (immobiliser code ECU) confirms that the certification ECU (smart key ECU assembly) is certified, sends an immobiliser unset command signal to the SFI system*1 or ECD system*2, and then the certification ECU (smart key ECU assembly) sends a security indicator light off signal to the clock*3 or multi-display*4.

• HINT: