2013 SSANGYONG KORANDO immobilizer

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7) Immobilizer Control
(1) 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.
For details, refer to Chapter "BCM".
(2) Components
Conditions for cooling fan
Immobilizer
antenna
Immobilizer
key
Start motor
Instrument
cluster
BCM
G20DF ECU

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.

Item Functionw/o
SKMw/ SKM
17 Flasher unit control Left turn signal lamp control O O
Right turn signal lamp control O O
Hazard warning lamp control O O
AUTO hazard warning lamp control O O
Emergency hazard warning flasher control O O
18 Fog lamp control Fog lamp control O O
19 Immobilizer function Key coding O X
CHALLENGE O X
CAN information O X
20 Folding/unfolding control Folding/unfolding control O O
AUTO folding/unfolding control O O
21 Approach lamp control Approach lamp control (for vehicles without
SKM)OX
Approach lamp control (for vehicles with SKM) X O
22 SKM warning control SKM buzzer control X O
16 System power sleep
modeSystem power sleep mode control O O

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2) Without SKM
BCMInternal buzzer (chime)REKES key
Immobilizer
ICM box
Internal buzzer (chime)
Warning horn
Mounting location Component

Door is opened with IGN OFF.
The key hole lamp comes on.
The key hole lamp comes on for 10 seconds (T1) when the door is closed. A.
B.
C. Operation 1.
The ignition is turned ON with the key hole lamp ON.
The key hole lamp goes out. D.
E. Operation 2.
10. KEY HOLE LAMP CONTROL
The key hole lamp goes out when the REKES LOCK signal is received (in theft deterrent
mode).
When the key hole lamp and immobilizer signals are received simultaneously, the immobilizer signal
overrides the key hole lamp signal.
When the immobilizer confirmation is failed, regardless of the key hole lamp operation condition, it
flashes for 11 seconds at intervals of 0.5 sec. ON/0.5 sec. OFF.
When the ignition is turned ON in virgin status, the key hole lamp flashes for 8 seconds at intervals
of 0.5 sec. ON/0.5 sec. OFF. -
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Theft deterrent mode deactivation conditions (for vehicles without SKM)
The REKES UNLOCK signal is input with IGN ON.
When the REKES UNLOCK signal is input in the theft deterrent mode or with the theft deterrent mode
deactivated, the hazard warning lamp is operated once and the theft deterrent mode is deactivated
(without warning horn output). -
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Theft deterrent mode (for vehicles without SKM)
Battery power
Front/rear door open
Tailgate open
4 doors LOCK/UNLOCK
Hood open -
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- The BCM monitors the following conditions continuously in theft deterrent mode.
Theft deterrent alarm activation (for vehicles without SKM)
Any door including hood and tailgate is opened in theft deterrent mode.
The LOCK switch of any door including tailgate is set to UNLOCK in theft deterrent mode.
Any door except tailgate and hood is closed and then opened after 30 seconds of alarming.
The hazard warning lamp and warning horn are activated for 30 seconds at intervals of 0.5 sec.
ON/0.5 sec. OFF. -
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Theft deterrent alarm deactivation conditions (for vehicles without SKM)
Any signal from the REKES (LOCK, UNLOCK, Panic, Escort) deactivates the theft deterrent
alarm.
The theft deterrent alarm remain on for up to 30 seconds.
When the theft deterrent alarm is activated in theft deterrent mode, turning the ignition ON
immediately deactivates the mode. The alarm is deactivated 30 seconds (time remaining) after that.
(For vehicles with immobilizer system, the alarm is deactivated once the key is verified after the
ignition is turned ON) -
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24. IMMOBILIZER SYSTEM
1) System Description
The BCM without SKM communicates with the transponder in the REKES key and immobilizer unit in
the key box through wireless communication. The immobilizer unit and BCM check the encrypted codes
received through hard wire communication to start the engine.
Stays on: Communication failure between immobilizer and EMS (ECU)
Flashes: Immobilizer coding failure (once per second)
2) System Diagram

3) Immobilizer Ignition Key Verification
When turning the ignition key to the ON position, the power is supplied to the immobilizer unit and EMS
(ECU). The ECU communicates with the immobilizer unit to verify the key and transponder. If it is valid,
the ECU starts to control the engine or immobilizer indicator (illumination or flashing) when the ignition key
is turned to the START position.
Once the key is verified, valid key verification time is provided for 10 seconds and the engine can be
started by turning the ignition key to the engine START position during this verification time. If the ignition
key is turned to the START position again after the 10 seconds of verification time, the key verification
should be reperformed.
When the ignition key is inserted, the immobilizer unit requests the transponder verification through
the antenna.
The transponder sends the encrypted message to the immobilizer control unit.
The immobilizer unit compares the encrypted message received from the transponder to the
coded value through the logic circuit. If they are identical, it requests the transponder approval.
When the ignition is turned ON, the EMS (ECU) requests immobilizer verification process through
the P-CAN.
The immobilizer control unit sends the encrypted message to the EMS (ECU).
The EMS controls the engine normally when the coded value and the encrypted message sent
from the immobilizer are identical. 1.
2.
3.
4.
5.
6.
When the immobilizer verification has failed, the verification signal is sent again 3 times for 2
seconds, and the verification procedure is carried out up to 3 times by turning the ignition ON within
10 seconds. If the three re-verifications fail, verification procedure is stopped and will be restarted
after 10 seconds.