System Description [02/2019 - ]
- IMMOBILISER SYSTEM DESCRIPTION
The immobiliser system is designed to prevent the vehicle from being stolen. This system uses the transponder key ECU assembly that stores the key ID codes of authorized ignition keys. If an attempt is made to start the hybrid control system using an unauthorized door control transmitter assembly, the transponder key ECU assembly sends a signal to the hybrid vehicle control ECU assembly to prohibit fuel delivery and ignition, effectively disabling the hybrid control system.
- FUNCTION OF MAIN COMPONENTS
Component Outline Transponder key ECU assembly - When a door control transmitter assembly is inserted into the ignition key cylinder, the transponder key ECU assembly checks if the key ID code received from the transponder key coil and registered key ID code match.
- When the hybrid control system is started, the transponder key ECU assembly checks if the communication ID codes stored in the hybrid vehicle control ECU assembly and transponder key ECU assembly match.
Transponder key coil When a door control transmitter assembly is inserted into the ignition key cylinder, the transponder key coil receives the key ID code from the transponder chip in the door control transmitter assembly grip and outputs it to the transponder key ECU assembly. Hybrid vehicle control ECU assembly The hybrid vehicle control ECU assembly receives key ID code verification results from the transponder key ECU assembly. The hybrid vehicle control ECU assembly also verifies the ECUs. Then judgment of whether to immobilise the hybrid control system is made. Unlock warning switch assembly The unlock warning switch assembly detects if the door control transmitter assembly is in the ignition key cylinder and outputs the result to the transponder key ECU assembly. - SYSTEM FUNCTION
- When the transponder key ECU assembly detects that the unlock warning switch assembly is on, the transponder key ECU assembly applies current to the transponder key coil and produces a magnetic field around the antenna coil. A transponder chip in the door control transmitter assembly grip outputs a key ID code signal using electromotive force generated by the magnetic field. The transponder key coil receives the signal and sends it to the transponder key ECU assembly. The transponder key ECU assembly checks if the key ID code received from the transponder key coil matches the registered key ID code.
When the hybrid control system is started, the hybrid vehicle control ECU assembly communicates with the transponder key ECU assembly and checks the door control transmitter assembly verification result. In addition, the hybrid vehicle control ECU assembly checks if the communication ID codes stored in the transponder key ECU assembly and hybrid vehicle control ECU assembly match. If they do not match, the hybrid vehicle control ECU assembly prohibits hybrid control system start.
- When the transponder key ECU assembly detects that the unlock warning switch assembly is on, the transponder key ECU assembly applies current to the transponder key coil and produces a magnetic field around the antenna coil. A transponder chip in the door control transmitter assembly grip outputs a key ID code signal using electromotive force generated by the magnetic field. The transponder key coil receives the signal and sends it to the transponder key ECU assembly. The transponder key ECU assembly checks if the key ID code received from the transponder key coil matches the registered key ID code.