Marelli Europe S p A 503-00-154 Vehicle Immobilizer User Manual 500 00 154 descrizione prodotto en

Magneti Marelli S.p.A. Vehicle Immobilizer 500 00 154 descrizione prodotto en

Users Manual

SITEMI ELETTRONICI 503.00.154 Page 1 of 3 Version 0 06.06.2007 Product description and Technical specification Type 503.00.154 Panel instrument with integrated immobiliser for VW group application Abstract This document summaries the technical characteristics of the device providing information of both a specific and a general nature.
SITEMI ELETTRONICI 503.00.154 Page 1 of 3 Version 0 06.06.2007 1. Main Performance The Immobilizer built in the instrument panel has to read out the data code from a Transponder, located inside the key, and checks whether that key is authorized to start the engine of the vehicle. In case of an authorized key, a start-enable code is sent to the requested Engine Management System (EMS) via CAN-line. Else, the starting of the engine is disabled by sending a negative answer to the request of the EMS. 2. System Components 2.1 Transponder inside key The Transponder is composed of a receiver/transmitter coil and an electronic circuit, featuring rectifier, voltage regulator, sequencer and memory. The Transponder is power-supplied by means of the 125kHz electro-magnetic field. The Crypt-(security)-Transponder is based on a bidirectional communication (amplitude modulation and demodulation). 2.2 Transmitter/Receiver coil (Antenna) at the ignition lock The Antenna supplies the transponder with energy, sends commands and data to the Transponder and receives codes from the transponder. 2.3 Immobilizer part of the instrument panel The Immobilizer unit of the instrument panel is directly connected to the Immobilizer Antenna and stores the authorised key codes in a non-volatile memory. The instrument panel is permanently supplied with battery voltage (KL30). The Immobilizer function operates with ignition (KL15) on. 3. Normal Starting Sequence 1. Initialize the immobilizer function of the immobiliser built in the instrument panel at the key on (ignition, KL15 on) 2. The 125kHz electromagnetic field is switched on 3. The Immobilizer read out the fixcode of the Transponder 4. If the fixcode is recognized a bidirectional authentication protocol is proceeded with the engine control unit (max. 300ms) 5. The received authentication code is verified 6. If the verification procedure is passed , wait for request from engine control unit
SITEMI ELETTRONICI 503.00.154 Page 1 of 3 Version 0 06.06.2007 4. Pinning of the instrument panel with immobilizer unit P13-7 coil P13-8 coil P13-12 CAN (H) P13-13 CAN (L) P13-1 Ignition key (KL15) P13-2 Battery Voltage (KL30) P13-19 GND Block diagram for the instrument panel with immobilizer unit 6. Electric specification’s Clock frequency : 32 MHz Power supply : 13,5V (vehicle battery) Foundmental immobiliser frequency : 125 kHz Antenna coil loop number : 131 Resistance : 40Ω @ 25°C 1kHz Inductance : 1,613 mH @25°C 1kHz Antenna for Immobilizer Instrument panel Key with Transponder Immo-bilizer unit To ECU

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