Immobilizer System Components - Hyundai Tiburon 2003 Workshop Manual

TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Body Electrical System > Immobilizer System > Components
and Components Location, TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Body Electrical System >
Immobilizer System > Components and Components Location
COMPONENTS
COMPONENT
TRANSPONDER (Built-in keys)
COIL ANTENNA
BODY CONTROL MODULE (BCM)
ENGINE CONTROL MODULE (ECM)
DATA LINK CONNECTOR (DLC)
http://www.hmaservice.com/viewer/content.asp?IsPrint=true&imgnum=1&print_title...
DESCRIPTION
When ignition is ON, the coil supplies energy to the
transponder, which in turn accumulates energy in the
condenser.
Once the energy supplied from the coil has stopped,
using the stored energy in the condenser, the
transponder transmits the secret data.
The transponder has an advanced encryption
algorithm. During the key teaching procedure, the
transponder will be programmed with vehicle specific
data. The vehicle specific data are written into the
transponder memory. The write procedure is once
only ; therefore, the contents of the transpondercan
never be modified or changed.
Supplies energy to the transponder.
Receives signal from the transponder.
Sends transponder signal to the BCM.
The BCM carries out communication with the built - in
transponder in the ignition key. This wireless
communication runs on RF (Radio Frequency). The RF
signal from the transponder, received by the antenna
coil, is converted into messages for serial
communication by the BCM. And, the received
messages from the ECM are converted into an RF
signal, which is transmitted to thetransponder by the
antenna.
In case of "SMARTRA" type immobilizer system the
BCM does not carry out the validity check of the
transponder or the calculation of encryption algorithm.
This device is only an advanced interface, which
converts the RF data flow of the transponder into serial
communication to the ECM andvice versa.
In case of "SMARTRA" type immobilizer system the
ECM carries out a check of the ignition key using a
special encryption algorithm, which is programmed into
the transponder as well as the ECM simultaneously.
Only if the results are equal can the engine be started.
The data of all transponders,which are valid for the
vehicle, are stored in the ECM.
By connecting the voltmeter or Hi-scan, the control
module diagnostic code can be read.
Page 1 of 2
24.04.2008