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ANTI THEFT PROTECTION SYSTEMS IMMOBILISER LECTURER NAME: MR. KHAIRUL AKMAL BIN NUSI. INTRODUCTION.
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ANTI THEFT PROTECTION SYSTEMS IMMOBILISERLECTURER NAME: MR. KHAIRUL AKMAL BIN NUSI
INTRODUCTION • Vehicle insurance companies demanded in the 90’s an effective technical protection against car theft to be developed by the car manufactures. A primary requirement of the insurance companies was that the anti-theft system should activate itself automatically.Therefore, the car manufacturers developed the self-activating immobilizer system as an electronic anti-theft device. It prevents an engine start with an ignition key unknown to the immobilizer system. This means that the immobilizer function is only deactivated when the ignition is switched on with a registered key and activated automatically when the ignition is switched off.
THE IMMOBILISER SYTEM OPERATION • This vehicle has a passive theft-deterrent system. • The system does not have to be manually armed or disarmed. The vehicle is automatically immobilized when the key is removed from the ignition. • The system is automatically disarmed when the vehicle is started with the correct key. The key uses a transponder that matches an immobilizer control unit in the vehicle and automatically disarms the system. Only an authorized key starts the vehicle. The vehicle may not start if the key is damaged.
The security light, located in the instrument panel cluster, comes on if there is a problem with arming or disarming the theft-deterrent system. • When trying to start the vehicle, the security light comes on briefly when the ignition is turned on. • If the engine does not start and the security light stays on, there is a problem with the system. Turn the ignition off and try again. • If the engine still does not start, and the key appears to be undamaged or the light continues to stay on, try another ignition key.
TRANSPONDER • a transponder is one of two types of devices. In air navigation or radio frequency identification, a transponder is a device that emits an identifying signal in response to an interrogating received signal. • In a communications satellite, a transponder gathers signals over a range of uplink frequencies and re-transmits them on a different set of downlink frequencies to receivers on Earth, often without changing the content of the received signal or signals.
ANTENNA COIL • I see various UHF antennas for the 800 and 900 MHz bands, for both cellular and ham radio use, that have coils of different lengths, some have more loops, some have less, others have the coil half way up the antenna, others have it close to the base. • What function does the coil serve and how do the different coil characteristics affect the antenna's performance?
FAULT LAMP • Immobiliser / key recognition system defect warning light • This indicates that either the chip within the key has not been recognized by the key reader or there is a fault with the key reader itself. • Either way the vehicle will / may crank and fail to start or even fail to crank depending on the system; during the attempt to start the vehicle this symbol may stay illumined or flash. • If the key has been dropped and come apart it is worth checking that the chip / transponder has been refitted into the key or try a spare key.
EXPLANATION CODING KEYS • Insert the first previously programmed coded key into the ignition. • Turn the ignition from off to on. Keep the ignition on for at least three seconds, but no more than 10 seconds. • Turn the ignition off and remove the first coded key from the ignition. • After three seconds, but within ten seconds of turning off the ignition, insert the second previously coded key into the ignition. • Turn the ignition from off to on. Keep the ignition on for at least three seconds, but no more than 10 seconds.
Turn the ignition off and remove the second previously programmed coded key from the ignition. • After three seconds, but within 20 seconds of turning the ignition off and removing the previously coded key, insert the new unprogrammed key into the ignition. • Turn the ignition from off to on. Keep the ignition on for at least six seconds. • Remove the newly programmed coded key from the ignition.
TRANSMITING AND RECIEVER MODULE • That provides a complete remote control switch function in a module format, delivering reliable. • Long range operation in situations where existing wide band solutions cannot offer adequate range, or where band congestion requires multiple channel operation. • With the inclusion of easy to use, single-function controllers/actuators, the CXT and CXR modules are highly suited to tasks that just call for a simple on/off control function (such as flood light control, machine override shutdown.
IMMOBILISER ECU • The engine immobilizer system is designed to prevent the vehicle from being stolen. • This system uses a transponder key ECU that stores the key codes of authorized ignition keys. • When the ECU detects that the unlock warning switch is ON, the ECU provides current to the transponder key coil and produces a faint electric wave.
IMMOBILIZER MASTER KEY • Immobilizer reset and new Master Key registration by starting the vehicle. • All previously registered key codes have been erased except the Master Key used during “Key Code Reset. • Register any additional customer keys by using “Key Registration.” • Each key will start the engine if registered correctly.
CONCLUSION • The anti theft protection System immobilizer provides a true hands-free keyless operation experience. The encrypted communication link between Push-Start module and Keyless Entry modules will ensure the vehicle can only be started with a valid access key. This system is also designed with dual-relay protection in mind for exceptional safety consideration. By learning about immobilizer we gain a lot of knowledge about a new technology in modern vehicle.
