Continental Automotive NISSAN-U5A Immobilizer System Type Nissan U5A User Manual func step6 nissan u5a
Continental Automotive GmbH Immobilizer System Type Nissan U5A func step6 nissan u5a
User Manual
SIEMENS VDO Automotive AG AT BE AS AIS LF
S:\postzula\Nissan\sec-e\func_step6_nissan_u5a FCC ID:KR5Nissan_U5A
Page 1 of 4
User Manual / Functional Description
of the
Siemens
Immobiliser system type Nissan U5A
FCC ID: KR5Nissan_U5A
SIEMENS VDO Automotive AG AT BE AS AIS LF
S:\postzula\Nissan\sec-e\func_step6_nissan_u5a FCC ID:KR5Nissan_U5A
Page 2 of 4
Description of the Siemens immobiliser system type Nissan U5A
This equipment is a vehicle anti-theft device to prevent from the unauthorized use of
a motor vehicle. The equipment allows the ignition system to be disabled when the
ignition system is manipulated without using the proper key, such as by direct
connection of power supplying lines or breakdown of the key-cylinder. The system is
a radio frequency apparatus comprising of a transponder integrally incorporated
within the ignition key, a radio frequency module (RFM) with an antenna installed on
the key-cylinder case and a controller (BCM) controlling the operation of the RF
module.
Whenever the ignition key is inserted the key-cylinder and turned to the “ON”
position, the RFM continues to generate a radio frequency carrier operating on
frequency 125kHz powered by the BCM, and bi-directional transmission in half
duplex mode between the BCM and the transponder occurs. The transponder
requires no internal power supply; it derives its power from the magnetic component
of the radio frequency carrier. Data is stored in the transponder and the BCM in its
non-volatile memory (EEPROM). Data is transmitted via radio frequency link by ASK-
modulating this carrier. Absorption modulation is used to transmit data from the
transponder to the BCM. The transponder absorbs the magnetic field which hence
modulates the current in the antenna of the RFM.
Upon receiving the start command from the BCM, the energized transponder
transmits its identifier to the BCM. The BCM sends its own password together with a
set of random numbers to the transponder in return. If the received password
matches the password stored in the transponder, the transponder reprogrammed the
data using its own password and the set of random numbers received in accordance
with the pre-determined protocol, data with the pre-calculated data using the
transponder’s password stored in the BCM and same random numbers in turn,
whereupon the matching being verified as s result of the comparison. After the
comparison the BCM sends the result of the comparison to the engine control
module. When coincidence has been verified, the engine control module enables the
engine to be activated, but when the result is negative it will not allow the engine to
be activated.
Whenever the ignition switch is turned from the ON position to the OFF position
during processing, the system is shifted to ignition OFF mode. The BCM causes the
indication lamp on the dashboard to flash when the ignition switch is in the OFF
position or a malfunction of the system occurs. The engine control module sends a
rolling code to the BCM every time the ignition switch is turned from the OFF position
to the ON position in order to watch for an unauthorized replacement or a
manipulation of the controller.
System components:
Type designation funktion manufacturer
284B2 C9911 Body controller module Calsonic Kansei
28590 C9965 Radio frequency module Siemens VDO
FCC ID: KR5Nissan_U5A
SIEMENS VDO Automotive AG AT BE AS AIS LF
S:\postzula\Nissan\sec-e\func_step6_nissan_u5a FCC ID:KR5Nissan_U5A
Page 3 of 4
Technical Data:
Carrier frequency: 125 kHz ± 1,5%
Output power/field strength: < 42 dBµA/m @ 10 metres
Type of modulation: AM (Amplitude Modulation)
Method of frequency generation: SAW
Number of channels: 1
Power supply: 12,8 V DC
Type of battery: vehicle battery
Transmission range: 5 centimeter
Duty Cycle acc. to EN 300 330:
5 actuations of immobilizer within 24 hours with a typical transmission time of
0,6 seconds
Transmission time TON 3seconds / 24 hours
Off time T OFF 86.397 seconds / 24 hours
Duty Cycle: TON / T (ON+OFF) x 100% = 3 / 86.400 x 100 % = 0,003 %
Label design:
Body controller module:
284B2 C9911
FCC ID:KR5Nissan_U5A
CAN: 267 xxx xxxx
This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept interference
received, including interference that may
cause undesired operation.
Radio frequency module:
FCC ID: KR5Nissan_U5A
SIEMENS VDO Automotive AG AT BE AS AIS LF
S:\postzula\Nissan\sec-e\func_step6_nissan_u5a FCC ID:KR5Nissan_U5A
Page 4 of 4
Block Diagram
10.7MHz
FSK
PLL Demod
LOOP
FILTER
VCO
1/2
IF
Filter
Tuner Circuit
Detector IC
Built-in Antenna
Power
Source
EEP
ROM
Input Interface
Output Interface
CPU
Input/Output
Interface
Tuner Power
Source
CAN BUS
BAT
GND
IGN SW
ACC SW
Key-in SW
Door SW(DR,ASST,Rear)
Key Cylinder(Lock,Unlock)
Trank SW
Trank Key SW
Door Lock SW
Door Unlock SW
Auto-light Sensor
Rear Defogger SW
Interior Trank SW
Combination SW Input X5
Hazerd SW
Fan ON SW
Comp. ON SW
IVCS Door unlock input
Immobilizer control
Room lamp
Key ring lamp
Step lamp
Battery saver
Flasher(RH,LH)
Security indicator
Door unlock(DR,other)
Door lock(all)
Trank open
Combination SW output X5
Power Window Power Suplly
IVCS Alarm output
128/64 ƒ³
DET CRYSTAL
OSC
Comparator
LNA LIMITER ASK SLICER
RF
Amp
SAW
filter
CAN H
CAN L
304.3MHz
Power Window Sytem
CONSULT
Immobilizer signal
Power Source
for Immobilizer Immobilizer power
This part is not inculuded test sumple.
Only for IMMOBILIZER tset.
FCC ID: KR5Nissan_U5A