immobilizer SSANGYONG TURISMO 2013 Service Manual

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7. CODING AND INITIALIZATION
1) Engine Variant Coding
Unit Selection Description
PTC auxiliary heater NO For PTC auxiliary heaterequipped vehicle,
select"YES".
YES
Glow plug Relay (K-line) Select "AQGS".
AQGS (CAN)
Transmission MT 5-speed Select the appropriate system.
MT 6-speed
AT 5-speed (DC 5AT)
AT 6-speed (DSI 6AT)
AT 7-speed (DC 7AT)
Pressure sensor
forA/C refrigerantNOSelect “Refrigerant pressure sensor”.
Refrigerant Pressure Sensor
Immobilizer NO Select "YES" if the vehicle has
immobilizer.
YES
Vehicle speed input
typeCAN Select "CAN" if the vehicle has ABS or
ESP
WIRE
Cooling fan Relay Select "PWM".
PWM
Auto cruise NO Select "YES" if the vehicle hascruise
control.
YES
Engine level control NO Select "NO".
YES
G-sensor NOABS: Select “NO”.
4WD ABS or ESP: Select “YES”.
YES
SMART key NO Select "NO".
YES

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2) ECU Control
(1) Function
a. ECU Function
ECU receives and analyzes signals from various sensors and then modifies those signals into
permissible voltage levels and analyzes to control respective actuators.
ECU microprocessor calculates injection period and injection timing proper for engine piston speed
and crankshaft angle based on input data and stored specific map to control the engine power and
emission gas.
Output signal of the ECU microprocessor drives pressure control valve to control the rail pressure and
activates injector solenoid valve to control the fuel injection period and injection timing; so controls
various actuators in response to engine changes. Auxiliary function of ECU has adopted to reduce
emission gas, improve fuel economy and enhance safety, comforts and conveniences. For example,
there are EGR, booster pressure control, autocruise (export only) and immobilizer and adopted CAN
communication to exchange data among electrical systems (automatic T/M and brake system) in the
vehicle fluently. And Scanner can be used to diagnose vehicle status and defectives.
Operating temperature range of ECU is normally -40 to +85°C and protected from factors like
oil, water and electromagnetism and there should be no mechanical shocks.
To control the fuel volume precisely under repeated injections, high current should be applied instantly
so there is injector drive circuit in the ECU to generate necessary current during injector drive stages.
Current control circuit divides current applying time (injection time) into full-in-current-phase and hold-
current-phase and then the injectors should work very correctly under every working condition.
b. Control Function
Controls by operating stages
To make optimum combustion under every operating stage, ECU should calculate proper injection
volume in each stage by considering various factors.
Starting injection volume control
During initial starting, injecting fuel volume will be calculated by function of temperature and engine
cranking speed. Starting injection continues from when the ignition switch is turned to ignition
position to till the engine reaches to allowable minimum speed.
Driving mode control
If the vehicle runs normally, fuel injection volume will be calculated by accelerator pedal travel and
engine rpm and the drive map will be used to match the drivers inputs with optimum engine power. -
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(14) Immobilizer control
A. Overview
The Immobilizer System provides an additional theft deterrent to the vehicle in which it is installed and
prevents it from being started by unauthorized persons. The transponder integrated in the key and the
engine control unit have the same code. When the ignition key with the integrated transponder is
turned to the ON position, the ECU (Engine Control Unit) checks the crypto code of the key and, if
correct, allows the vehicle to start the engine.
B. Components
Basic components (ignition key system) ▶
D20DTR ECUImmobilizer antennaIndicator/Warning Lamp
Start motorImmobilizer key

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C. Key approval process
When turning the ignition switch to ON position, the power is supplied to BCM and ECU. ECU
communicate with the immobilizer key to check if it is valid crypto code. If it is valid, ECU start to control
the engine when turning the ignition switch to START position. The system has 10 seconds of valid
time-out period. If the engine does not start in this period, the key approval process should be done
again.

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1. SPECIFICATIONS
Item Item Specification
Immobilizer
unitOperating voltage
(CAN) 6.0 V to 16.0 V
(6.0 V ~18.0 V)
Operating temperature-30℃ ~ 80℃
Coil inductance420 uH ± 20 uH
Modulation methodFSK
(Frequency Shift Keying : frequency
displacement)
Frequency134.2 KHz ± 4 KHz
TransponderFrequency134.2 KHz ± 4 KHz
Operating temperature-40℃ ~ +85℃
Transponder coding Up to 5
2. CAUTIONS
The vehicle owner must observe the service works when deleting the transponder codes or
registering additional keys.
In any cases, the immobilizer system can not be removed from the vehicle. If you attempt to
remove it and damage the system, starting will be impossible, so never attempt to remove,
damage or modify it.
The remote engine starter cannot be installed to the vehicle equipped with the immobilizer
system.
Do not drop or shock to the transponder in the ignition key as it may be damaged.
With a damaged transponder, the engine cannot be started.
For the vehicle with the immobilizer, there can be a problem in starting the vehicle or the system
error: 1.
2.
3.
4.
5.
6.
When more than one immobilizer keys come into contact with (each) other(s) or key is close
to any device sending or receiving electromagnetic fields or waves
When the ignition key is close to any electronic or electric devices such as lighting equipment,
security keys or security cards
When the ignition key is close to a magnetic or metal object or a battery -
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1. SYSTEM LAYOUT
1) Location
Immobilizer Warning LampImmobilizer Unit
ECUREKES KeyDiagnostic Connector

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2) System Diagram
The certification for the immobilizer is performed when turning the ignition switch to the "ON" position
after the CAN communication between the ECU and immobilizer is established.

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2. OVERVIEW
The Immobilizer System provides an additional theft deterrent to the vehicle in which it is installed and
prevents it from being started by unauthorized persons. The transponder integrated in the key and the
engine control unit have the same code. When the ignition key with the integrated transponder is
turned to the ON position, the ECU (Engine Control Unit) checks the crypto code of the key and, if
correct, allows the vehicle to start the engine. If the verification has been failed, the engine cannot be
started and the immobilizer warning lamp blinks.
Immobilizer unit

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Transponder
3. VERIFICATION OF KEY
1) Verification
The immobilizer system prevents the vehicle theft by allowing only the authorized key to start the
engine. The transponder inside the key communicates with the immobilizer installed in the key box,
and the system permits the engine to start after confirming the encrypted coding from the engine ECU.
In the following cases, a driver may be unable to start the vehicle with the immobilizer.The immobilizer unit transmits
the encrypted code to the
transponder. (2)
The transponder sends an encrypted signal to the unit as a response.
The transmitted code is changed to an encrypted signal in the unit.
The system compares the signal from transponder and the encrypted signal in immobilizer unit. (3)
(4)
(5)
When two or more immobilizer keys come into contact with (each) other(s).
When the key is close to any device sending or receiving electromagnetic fields or waves.
When the key is close to any electronic or electric devices such as lightening equipment,
security keys or security cards.
When the key is close to a magnetic or metal object or a battery. -
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Immobilizer Unit

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ECU
Immobilizer Indicator and Warning Lamp ▶
This indicator comes on when the ignition
key is communicating with the engine control
unit (during engine starting) and goes out
after starting the engine.
When turning the ignition key to ON position, the
ECU transmits the challenge message to the
immobilizer unit to verify whether the key is valid. (1)
Only when the two signals are identical, it
recognizes the key as the authorized one and
transmits the positive message to the ECU.
The ECU allows the engine to be started. (6)
(7)
Do not drop or shock to the transponder in the key as it may be damaged.
With a damaged transponder, the engine cannot be started.
When you erase the code or register an extra key, let the owner attend on the site.
In any case, the immobilizer system cannot be removed from the vehicle. If you attempt to
remove it and damage the system, starting will be impossible, so never attempt to remove,
damage or modify it.
The remote engine starter cannot be installed on the vehicle equipped with the immobilizer
system. -
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-Lamp ON: in communication
Blinking twice for one second:
immobilizer system failure
Blinking once for two seconds:
immobilizer unit is not coded
The immobilizer indicator does not come
on if the communication time between
immobilizer key and ECU is too short.
Immobilizer Indicator and Warning Lamp