Daewoo Precision IM800T IMMOBILIZER User Manual MANUAL
Daewoo Precision Industries Ltd IMMOBILIZER MANUAL
MANUAL
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| Document ID | 340543 |
| Application ID | MvTtnpz7MBe7mdVVpGj1tQ== |
| Document Description | MANUAL |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 98.73kB (1234081 bits) |
| Date Submitted | 2003-07-17 00:00:00 |
| Date Available | 2003-07-17 00:00:00 |
| Creation Date | 2003-07-15 14:39:11 |
| Producing Software | Hewlett-Packard Intelligent Scanning Technology 3 |
| Document Lastmod | 2003-07-15 15:32:51 |
| Document Title | MANUAL |
| Document Author: | KES33 [ SMHONG ] |
The Document of System Introduction
IMMOBILIZER SYSTEM
— IM800-
fi‘k Daewoo Precision Industries Co., Ltd.
Information Io use: : em 15. PARAGRAPH 15.2] AND l5.!05(b)
Changes or modifications not expressly approved by the pflrly responsible for
compliance could void the user‘s authority to operate the equipment
FCC Nodca
NOTE 1 This equipment has been tested and found to comply with the limits for a
Class B digital device. pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference in a residential
installation. This equipment generates ms and can radiate radio frequency energy and
if not installed and used in accordance with the instructions. may cause harmful
interference to radio communications. However. there is no guarantee that interference
will not occur in a particular installation If this equipment does cause harmful
interference to radio or television reception. which can be determined by turning the
equipment off and on. the user is encouraged to try to correct the interference by one
or more of the following measures:
- Reoriant or relocate the receiving antenna.
- Increase the separation between the equipment and receiver
- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This device complies with Pan is of the FCC Rules. Operation is subject to the
following two condition-s: (llihis device may not cause harmful interference. and (2) this
device must accept any interference received. including interference that may cause
undesired operation.
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- Contents -
1. Introduction ..................................................................................................................................... 3
2. System Description .
3. System Function
3.1 Immoblllzlng Function
3.2 Functions for Protection against Manipulation ...............................................
3.7.1 Vehicle Specific Identification Number(VIN) .
4. System Components ........................................
4.1 Ignition Key with Integrated Transponder ...................................................................................
4.1.1 Transponder Mounting ..
4.1.2 Transponder Function
4.1.3 Transponder Specification .
4.2 Toroidal Coll ...................
4.2.1 Toroidal Coil Mounting
4.2.2 Tomidal Coil Function
gamma-41
meflflfl
4.2.3 Electrical Spec. oi Toroidal Coil .............................................................................................. 8
4.24 Toroidni Coil Driver.
4.3 Status [ED ..............
4.3.1 Status LED Modes ..................................................................................................................... 9
4.4 Immobilizer Electronic Control Unit (ICU)
4.4.1 Tasks.
4.4.2 Function
4.4.2.1 Normal Operation ......................................
4.4.2.2 ALDL-mode ..........
4.4.2.3 VIN-code Handling _
4.4.2.4 Calibration Parameter ........................................................................................................... 13
4.4.3 Connector for the ICU.
4.4.4 General Specification .
4.4.5 Environmental Test Specificatio
5. Block Diagram of Immobilizer System ..
5. Immobilizer Control Unit Appearance .
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1. Introduction
This document is the technical specification of the crypto transponder based Immobilizer System for the
DWMC T200 car consisting ofDPI Immobilizer Control Unit IMSOO, (hereinafier Immobilizer or ICU)
and Engine Control Module (ECM)
The purpose of the DPI Immobilizer System is to provide additional thefi deterrence to the vehicle
in which it is installed and to prevent it from being driven by unauthorized users. The verification
of the user authorization is done by using an ignition key with integrated transponder
The external _LED displays the Immobilizer status and has an additional thefi deterrence Motion
To secure the communication, the status is exchanged between the Immobilizer and the ECM
in a 5 bytes of encoded data.
These 5 bytes are composed by a mixture of random data and two types of fixed code :
- a Vehicle Model Identification Number : MIN
- a Vehicle specific Identification Number : VIN
The MIN is known born the first supply of the system.
The VIN is realized by ICU on the special order from the key coding (reading of transponder code and
storing it as valid key code in Immobilizer EEPROM). A different random data is computed at each
key transition,
All the immobilization communication between the ECM and ICU is made on K-line.
Due to the learning of the Vehicle specific Identification Number, both ICU and ECM can stay in 3 stable
modes :
- Virgin mode (VIN not Ieamt)
- Learnt mode (VIN learnt)
- Neutral mode (for a new VIN learning)
Every Immobilizer system has one of 65.535 possible VIN—codes, which have to be equal to release
the engine running. The definition of the VIN—code is executed by the Immobilizer.
The diagnosis of the Immobilizer is realized by the ALDL-function modes(refer to DPE-AE-IMI 599125).
They are realized by the Daewoo ALDL test equipment. To avoid manipulation of the usage of the test
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equipment, especially the use of the Key Coding procedure has to be protected against unauthorized.use.
So some critical services are only accessible by security access implemented in ICU diagnostic service
example for "read/reset ICU VEN-oode'. ‘change to neutral mode' and ‘authorize one additional key‘, etc,
2. System Description
' The T200 Immobilizer system consist of
o a maximum of 5 ignition keys with integrated transponder,
o the toroidal coil for energizing and reading the transponder mounted at the ignition look,
0 the Immobilizer control unit(ICU) with :
- power supply (Term. 30),
- ignition input circuit,
- transponder modulation and demodulation unit,
- u? with integrated EEPROM
- driver electronic for the extents] status LED,
- serial data link hardware
0 the external status LED for displaying the Immobilizer status.
a the serial data link between Immobilizer and ECM and
o the serial data link between Immobilizer and Instrument Cluster(provision)
. the ECM itself
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3. System Function _
3.1 Immoblllzlng Function
0 Ignition ON Immobilizer:
Turning on the ignition triggers the Immobilizer to read out the transponder data and to compare
the read code with the valid key codes stored in the Immobilizer EEPROM Until the end of
transponder reading the Immobilizer is active state(cranlting is not possible).
- In case of using a valid key the internal relay is activated (cranking is possible) and the
release message communication with the ECM takes place. The LED displays the Immobilizer
status valid key‘ .
- In case of receiving no ECM request within the defined time—window the internal
relay is deactivated(cranking is not possible). The LED displays the Immobilizer status ‘valid key'.
- At the end of the TMPVDOUT delay the immobilization communication is stopped and
the internal relay is deactivated and then the Immobilizer waits for a diagnosis request from the tester.
- In case of using a invalid key, ‘no release answerV communication with the ECM takes place.
The LED displays the Immobilizer status ‘invalid key’,
0 Ignition ON ECM :
Afier turning on the ignition the ECM will control the engine in a normal way for starting and
running while waiting for a valid release response message from the Immobilizer (release time period).
- Afier receiving a response message including the information ‘ICU in learnt mode’ and the cancel
system VIN—code the ECM enters the release state, which allows to continue the running of the
engine.
~ After receiving a response message including the information ‘ICU in learnt mode‘ and a wrong
system VIN-code, the ECM does not send a new request and enters the blocked state. which causes
the activation of the immobilization actions of the engine
- If the ECM doesn’t receive a response message within a defined time from beginning of the
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release time period and the ECM receives a no release answer, it enters the blocked state. which
causes the activation of the immobiiiudon actions of the engine.
- Ignition OFF Immobilizer :
The inactive state of the Immobilizedvalid key / invalid key) ends with tuming 05 the
ignition.
- Ignition OFF ECM :
The immobilizing state of the ECM (released/blocked) ends with turning ofi‘ the ignition or
with removing the battery voltage.
3.2 Functions for Protection against Manipulation
3.2.1 Vehicle Specific Identification NumbarMN)
The VIN—code is calculated by the immobilizer using a random number generator.
The VIN-code is transmitted from the immobilizer in the release message communication
only in case of using an authorized key. “fithout an authorized key it is not possible to get the
system VIN—code.
In case of ECM internal state is in virgin mode or neutral mode the ECM learns the system VIN-code
automatically afler receiving the first release response message.
To get a synchronized Immobilizer system (same VIN-codes in Immobilizer and ECM, authorized key)
the function of Auto key learning procedure in the DWMC production line and the ALDL-test equipment
has
to be used for authorization of the keys (first Key Coding) in the field.
The usage of this test equipment is restricted to authorized persons.
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Title: IMMOBILIZER SYSTEM - ”0000 Dill : 2003/06!“
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4. System Components
4.1 Ignition Key with Integrated Transponder
4.1.1 Transponder Mounting
The transponder is placed invisible inside the ignition key. A second ignition key with integrated
transponder on the bunch doesn't afi'ect the reading process.
4.1.2 Transponder Functlon
The transponder is a read/write RF transponder. The transponder contains an implementation of a
crypto-algorithm with 96 bits of user configurable secret-key contained in EEPROM. It also provides
a unique device identification of 32bits that can never be modified as well as 30bits of freely
programmable USER-MEMORY.
Bits 15 and I4 of word 1 are used as Lock-bits. The memory can only be accessed for writing or
Erasing if these two hits have the contents “ l 0" as when they are delivered.
The transponder transmits data to the tmnsceiverflCU) by modulating the amplitude of the electromagnetic
field and receives data and commands in a similar way.
4.1.3 Transponder Specification
‘. Mechanical data
- Length oftube 13.3 +/- 0.4mm
- Diameter of tube 3.15 +/- 0.1mm
- Storage temperature 40 to +85 T:
- Operation temperature -40 to +85 'C
‘. Electrical data
- Nominal resonance frequency RF = IZSkHz +/‘ 3kHz
- Bit Period 256us at RF = IZSkI-{z
- Bitcoding Manchester
- Modulation AM
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4.2 Toroidal Coil
4.2.1 Toroldal Coll Mounting
The toroidal coil is mounted at the ignition lock in front of the key barrel, [t is imegrated to the ICU
housing
package with a body of the coil to improve the performance of transponder reading and EMC,
4.2.2 Toroidal Coil Function
The toroidal coil and receiving coil inside the transponder built a transformer. During the reading
process the coil induces energy into the transponder. The transponder charges the field and generates
an amplitude modulated signal with the manchester coded data. This charge of the field is
demodulated inside the Immobilizer.
4.2.3 Electrical Spec. of Toroidal Coll
- Operating temperature -40'C to +80'C
- Turns 80
~ lnductance(not on ignition lock) 407uH +/- 2% measured at lZOkHz
- lnductance(on the ignition lock) 360 t 10 til-l measured at l20kl-lz
- DC resistance 4.80hm +/- 5%
- Cu-wire(diameter) 0 20mm
4.2.4 Toroldal Coil Driver
The Immobilizer contains the coil driver hardware for direct connection of the toroidal coil.
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4.3 Status LED
An external LED displays the Immobilizer system status. The Immobilizer contains the LED driver
hardware for direct connection of one LED.
4.3.1 Status LED Modes
Blinking (f = le)
Duty cycle 7 : I
Immobilizer active
Immobilizer active
Learning in progress
ON
Immobilizer active
Blinking (f= OASHz)
Duty cycle 5 : 5
Immobilizer active
Mode F Blinking (f= lI-Iz)
Duty cycle 5 : 5
Immobilizer active
Immobilizer inactive
- Ignition ON
-. Invalid key detected or
invalid learnt mode
-. Leann or Vir_'n mode
-, Ignition ON
a Valid key detected
-‘ Learnt mode
-. Ignition OFF
-. Any ICU status except
in case of Mode A
-. Ignition OFF or ON
-. Learning non successfiil or
ke et Ieamt
~. Ignition ON
-. Trans onder doesn’t detected
~. Ignition ON
lrgin state
-. En
-, Igiition ON
-. VIN-codeJMIN-code are
difi‘erent between ICU and
ECM in learnt state
Mode G Blinking(f= ZHz)
Duty cycle 5 : 5
Learning in progress
Mode l-I
Blinking(f= 4Hz) Learning in progress
Duty cycle 5 : 5
-, Ignition ON
~. Auto learning of first key is
successfirl
-. Ignition ON
- Auto learning of second key is
successful
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4.4 Immobilizer Electronlc Control Unit (ICU)
4.4.1 Tasks
The function of the Immobilizer System is shared between the ICU and the ECM
The tasks of the immobilizer Electronic Control Unit(lCU) are :
- Reading of the input information “Ignition ON/OFF’.
- Controlling the states LED
- Controlling the transponder read/write process (modulation. demodulation, decoding, comparison
of the read code with the codes of the valid keys),
0 Communication with the ECM alter ignition ON (receiving of the ECM-request and transmission
of release message).
- Controlling the internal relay to connect 5100hm pull~up resistor or not.
0 Special functions for calculation and handling of the VIN~code
0 Communication with the ALDL-test equipment. Main functions are the Key Coding procedure,
the VTN-code handling and the suppon for system test functions,
0 Handling of the soflwarc watchdog
- Realization of functions for reducing the power consumption(cyclic wake up).
0 Message encryption
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4.4.2 Function .
4.4.2.1 Normal Operation
0 In the active mode of Immobilizer(engine ofl', ignition turned 05) the status LED turned OFF as Mode C,
0 When ignition is turned on, the system wakes up and tries to read out the transponder. The timing
for all system is defined in the chapter 5.
0 In case of the detection of a valid key, the release message communication with the ECM takes place.
The status LED displays the Immobilizer state ‘valid key' as Mode C. The maximum duration of
the release message communication is restricted to a calibration time TNH’VDOUT. This value
must be defined until fixing of the Immobilizer sofiware,
- Afier receiving request message including the infomtation ‘ECM in virgin mode' and ‘ECM in
neutral mode’ the ICU will send response message ‘ICU in Ieamt mode' and will change to the
inactive mode.
The status LED is turned ofi'.
- Aher receiving request message including the information ‘ECM in learnt mode' and the correct
VIN-code. the ICU will send response message ‘ICU in learnt mode’ and will change to inactive
mode. The status LED is turned off.
- Afler receiving request message including the information ‘ECM in learnt mode' and incorrect
VIN-code, the ICU will send response message ‘no release answer‘ and will change to active mode.
The status [JED displays the Immobilizer state ‘dit’ferent VlN—code', And then in order to crank
a vehicle the ICU should be changed to neutral mode by Tester equipment(change to neutral mode).
- In case of no request from the ECM is received within the defined time TM'PVDOUI‘. the
Immobilizer stays in the active mode. The status LED is still displaying the Immobilizer state ‘valid
key .
c In case of the detection of a invalid key. the ICU will send response message ‘no release answer' and
will change to active mode.
The status LED displays the Immobilizer state ‘invalid key’.
- Afier taming ofi'the ignition (ignition OFF detection similar to the ECM ignition OFF detection),
the Immobilizer changes to the active mode, The status LED is turned off as Mode C.
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4.4.2.2 ALDL-mode
During ignition ON the Immobilizer ALDL-mode can be activated with one of the defined
Irmnobilizer ALDL-Function modes.
Until the deactivation with the ALDL Function Mode ‘Stop Communication Senrice’ or detection of
a timeout the Immobilizer stays in the ALDL mode. Cyclic transmissions of ALDL-fimction modes
(same as Tester Present service) keep the Immobilizer in the ALDL-mode. The normal operation of the
system (reading of transponder alter taming ignition on. communication with the ECM, blinking
of the status LED) is disabled during ALDL-mode.
- The status LED is turned 05 during ALpL-mode.
- The Immobilizer will answer all correct messages, which are defined as Immobilizer messages.
0 Activation of ALDL~Mode afier TMPVDOUT time delay may not cause a bus collision.
4.4.2.3 VIN-code Handling
The VIN-code is stored in the Immobilizer uP-EEPROM. At the end of the electronic unit
production line the Immobilizer VIN-code has to be erased. The erased VIN-code(=0FFFI-'h) enables
the VIN~code calculation procedure of the Immobilizer, The VIN-code can only be erased with
the special Immobilizer ALDL-function ‘Reset Immobilizer VIN-code’, It is not possible to
change the VIN-code with the standard Key Coding procedure. The VIN-code can be read with the
diagnostic function ‘Read VTN~code service‘ and ‘Read ICU & ECM mode service‘ for external
comparison with the ECM VIN-code.
The VIN-code is a two byte random value in the range from OOOOh to OFFFFh. The VIN—code is fix
for one car. but it has 65,535 variations in field. The value OFFFF h is reserved to enable the VIN-code
calculation procedure.
If the VIN—code calculation procedure is enabled, the first Key Coding procedure(nonnally the Key
Coding procedure at DWMC production line) is followed by the VIN-code calmlation procedure.
The new VIN-code is transmitted to the ECM via the release message communication during the
first starting with a valid key. The system timing in this case is the same as in case of the normal use
of a valid key.
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4.4.2.4 Calibration Parameter .
0 TMPV'DOUT '
It represents the maximum duration of the release message communication between the ECM and the
ICU, The timer starts with detection of Ignition on. On the ECM side the time allowed to the lmmo,
Function is limited to a maximum value C_MAX_DLY_ACT_lMOB(typical value 768ms) which
starts with the end of Tini time,
If no request from ECM was received during limited time. TMPVDOUT. the release message
communication is finished.
- Timeout = TMPVDOUT ' 100 ms
- Calibration range =
W ,. TMPVDOUT .. 254
1 sec . Timeout , 25.4 sec
- Default value
TMPVDOUT = 20
Timeout = 2 sec
- EEPROM address TMPVDOUT = 31h
4.4.3 Connector for the ICU
The Immobilizer has two connectors The terminal fiinction is shown in the following table'
— mam 1»
_ WWW so) _
Serial data linkansuument Cluster)- provision Bidirectional data
Vehicle GND (Term. 31) Power
Serial data link(ALDL Tester) Bidirectional data
_ Serial data link(ECM) Bidirectional data
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4.4.4 General Speclflcatlon
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moms
Operating voltage
Undervolmge protection
Revers; battery protection
Mm,
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omwmmmse
macaw
LED driver current lpeak
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Tm. : IMMDBluZER SYSTEM - IMM Dlh : 2003/00/04
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4.4.5 Environmental Test Specification .
Rapid change of temperature test According to EDS-T—5426
20 cycles
-40 'C to +80'C
30m recovery time/ ih duration
Endurance test According to EDS-T6426
(Change of temperature test) -40'C to +80'C
12h per cycle (71! at +80'C / 1h at —40'C)
50,000 cycles(5soc : ON. Ssec : OFF)
' Frost test According to EDS-115426
-2oic
9504. humidity
8 hours
Humidity test According to EDS-T-S426
+40'C
95% humidity
250 hours
Dust test According to EDS-T-5426
Agitation 1 5 sec each cycle
Duration : 20 minute(l cycle)
8 hours
Vibration test According to EDS-T6426
Duration : 8 hours each axis
Frequency & Acceleration : 25Hz — 4.34G/Hz
lOOOHz — 0. lG/Hz
Total acceleration : 26
According to EDS-T6426
Height : 1m
Ground ; concrete surface
2 shocks each direction 6 total
Drop test
Functional Status Classifications : class C accordin to GM9100P
Transients
Load dum-
EDS-T~5512 : Bulk Current injection
EDS-T-SSM : Magnetic Immunity
EDS-T-5006 : Sinusoidal Burst
EDS-T~5005
db Dmoo Precision industries Co.. Ltd.
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