Annex No.5 Functional Description User Manual SIEMENS VDO Automotive AG SV C BC P2 RF TG IC: 267T-5WK49182 FCC ID:KR55WK49182 Functional Description /
User Manual of SIEMENS VDO Immobilization system type Suzuki Gasoline File: I:\POSTZULA\Suzuki\Technical Documentation\Functional_description_Gasoline.doc Page 1 of 4 SIEMENS VDO Automotive AG SV C BC P2 RF TG IC: 267T-5WK49182 FCC ID:KR55WK49182 FUNCTIONAL DESCRIPTION System Components The Suzuki Gasoline immobilization system consists of the immobilizer antenna, a trans-
ponder and the Engine control unit. The immobilizer antenna is located on the vehicles ignition lock. The transponder is located within the ignition key. The transponder is magneti-
cally coupled to the immobilizer antenna. The immobilizer antenna is connected to vehicle power and to vehicle ground via a wiring harness and to the Engine control unit via serial interface. For the illumination, a side LED which is connected to a light pipe is used. The LED is pow-
ered externally via two resistors. System Operation This immobilizer system is a passive immobilization system. The immobilizer antenna uses a magnetic couple to read the transponders identification code. The immobilizer compares the identification code received from the transponder via immobilizer antenna with identification codes stored in its non-volatile memory. If the identification code from the transponder matches one of the identification codes stored in memory, the immobilizer sends a Valid Key message to the Engine Management System controller. If there is no match, the im-
mobilizer sends an Invalid Key message to the Engine Management System controller. This causes the Engine Management System to turn off the engine. Block Diagram LED +
LED -
ECM Kl.15 12V GND Immobilizer Yellow LED for Illumination ring Illumination ring LF Antenna Key Power Supply 5V - Regulator 5V Resonator SCI SCLK Serial Interface CLK RXD TXD Advanced Basestation IC PCF7991AT Security Transponder Chip PCF7936AS Energy Data Inductive Link f = 125 kHz File: I:\POSTZULA\Suzuki\Technical Documentation\Functional_description_Gasoline.doc Page 2 of 4 SIEMENS VDO Automotive AG SV C BC P2 RF TG IC: 267T-5WK49182 FCC ID:KR55WK49182 Variants type designation remarks 5WK49182 5WK49181 immobilizer antenna with LED assembled immobilizer antenna without LED assembled Both variants use the same pcb, schematic and layout. They differ only in the assem-
bly of the illumination LED ring which does NOT influence the RF characteristics of the immobilizer. Technical Data Carrier frequency:
Carrier field strength:
Modulation:
Supply voltage:
Battery type:
Range:
125 kHz 2kHz
< 40dBA/m @10m ASK 12 V Car battery
< 55mm Typical usage pattern 6 seconds transmission duration in 24 hours 50 immobilizer operations in 24 hours with a typical transmission duration of 0.12 seconds 0.25 seconds transmis-
sion in 1 hour Transmitter ON Transmitter OFF Duty Cycle: TON / T (ON+OFF) x 100% = 0.25 / 3,600 x 100 % =0.006 %
seconds / hour seconds / hour 0.25 3,599.75 NOTE Changes or modifications not expressly approved by the manufacturer could void the users authority to operate the equipment. File: I:\POSTZULA\Suzuki\Technical Documentation\Functional_description_Gasoline.doc Page 3 of 4 SIEMENS VDO Automotive AG SV C BC P2 RF TG IC: 267T-5WK49182 FCC ID:KR55WK49182 Label Design Siemens VDO 5WK49182 FCC ID:KR55WK49182 IC:267T-5WK49182 This device complies with part 15 of the FCC Rules and RSS-210. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept including interference that may cause undesired operation. interference received, Siemens VDO 5WK49182 Model: 5WK49181 FCC ID:KR55WK49182 IC:267T-5WK49182 This device complies with part 15 of the FCC Rules and RSS-210. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept including interference that may cause undesired operation. interference received, File: I:\POSTZULA\Suzuki\Technical Documentation\Functional_description_Gasoline.doc Page 4 of 4