2013 SSANGYONG KORANDO Service Manual

8712-03
Start motor
12. SKM IMMOBILIZER SYSTEM
1) System Description
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 SKM (immobilizer slot) and EMS (ECU) through
P-CAN communication, and the system permits the engine to start after confirming the encrypted
coding.
When the START/STOP switch is pressed with the smart key inserted into the immobilizer slot because
of the smart key battery discharge, the SKM communicates with the EMS (ECU) through P-CAN, and
the ECU starts to control the engine only the signal is valid.
A valid key verification time is provided for 10 seconds and the engine can be started during this time. If
pressing the START/STOP switch again after this 10 seconds, the key verification process is performed
again.
2) Configuration
Emergency slot
Smart key
SKM
EMS (ECU)

3) Operating Process
Key verification can be divided into two types, immobilizer key verification and smart key verification. The
immobilizer verification is applied for the SKM system, and verifies the transponder built in the smart key.
When the smart key is inserted into the slot, the verification is carried out, overriding the RF signal from
the smart key.
The power is supplied to the slot when the START/STOP switch is pressed with the smart key inserted
into the slot, and the smart key transponder verification is carried out by the transponder communication.
Once the key is verified, a valid key verification time is provided for 10 seconds and the engine can be
started by pressing the START/STOP switch during this time. If pressing the START/STOP switch after
this 10 seconds, the key verification process is performed again.
When the ignition is turned ON, the EMS (ECU) sends the challenge message to the SKM through
the P-CAN. (This is to verify whether the transponder of the smart key is valid. If the verification fails,
it transmits the re-verification signals 3 times for 2 seconds. If 3rd re-verification fails, the verification
is deactivated for 10 seconds and re-activated after that.)
The immobilizer slot of the SKM system sends the encrypted cod to the transponder, and the
transponder re-sends the encrypted code to the immobilizer slot.
The encrypted sent to the immobilizer slot is re-sent to the SKM.
The SKM compares this code with the encrypted code randomly transmitted by the internal logic.
(System compares the signal from transponder and encrypted signal from the immobilizer control
unit)
Only when the two signals are identical, it recognizes the key as the verified one and transmits the
positive message to the ECU.
The ECU enables the engine to be started. 1.
2.
3.
4.
5.
6.

8010-01
1. SPECIFICATION
Pin No. Specification
Rated voltage DC 12.0 V
Operating voltage DC 9 V ~ 16 V
CAN operating
voltage DC 7 V ~ 18 V
Inspection voltage DC 13.5 V
Operating
temperature
Storage temperature
Dark currentIGN OFF: 1 mA, 12 Vturned off and stabilized data get
IGN ON: Max. 2 A, 12 V

Status Standard type Supervision type
TPMS/global
warning lamp
added
TPMS/Global warning lamp added TPMS/Global warning lamp added
Warning
message added
to LCD display
related to
TPMS
If the driver press the TRIP switch to
change to the tire pressure display mode,
the tire pressure is displayed in following
order: front wheels and rear wheels. If
without other messages.If the driver press the TRIP switch to
change to the tire pressure display mode,
the tire pressure is displayed. If the tire
is displayed. If the tire pressure is
abnormal, the tire in question blinks then
comes on depending on how the
abnormality is severe on the display
screen.
2. MAJOR CHANGES
1) TPMS/Global Warning Lamp Added
TPMS warning lamp
Comes on when there is a
malfunction in TPMS.Global warning
Comes on when the tire
pressure is not normal.

8010-01
2) TPMS Mode
(1) Supervision type LCD instrument cluster display
It monitors the tire and warns the driver if there is any abnormality.
The driver can see the current tire pressure by pressing the TRIP switch. -
-
Status Message Operating condition
Impossible to
determine tire
pressure
possible to determine tire pressure correctly
* At initial start, the tire pressure can be displayed
after 10 minutes of driving at speed of 20 km/h or
higher
Correct tire pressure The specified tire pressure is based on a cold tire
with the vehicle unloaded (no occupant); 32 psi at
Lower than minimum
tire pressureCorresponding status lamp comes on if tire
pressure is 24 psi or less
Excessive tire
pressureCorresponding status lamp blinks with shading
reverse at interval of 0.4 seconds if tire pressure is
50 psi or higher
Low tire pressure Corresponding status lamp comes on if tire
pressure is 24 psi or less
Sudden tire pressure
lossCorresponding status lamp blinks with shading
reverse at interval of 0.4 seconds if tire pressure
changes more than 3 psi per 1 minute at speed of 0
km/h or above.
Imbalance between
left and right tire
pressureCorresponding status lamps blink alternately at
interval of 1.0 second if tire pressure differs by more
than 4 psi in the left and right tires while driving for
more than 10 minutes

(2) Standard type LCD instrument cluster display
-
3) GSI(Gear Shift Indication)
Status Standard type Supervision type
Display gear
stage for
manual
transmission
Informs appropriate shift time for manual transmission
: This means that you should shift up to 3rd gear.
(2nd gear or lower currently)
: This means that you should shift down to 3rd gear.
(4th gear or higher currently)
The system operates normally when the indicator lamp looks not being gone out
completely.

8010-01
Status Supervision type
LCD display
The ESCL (Electric Steering Column Lock) is a device to lock the steering handle
using an electric signal, not a mechanical type and shows the messages above if the
relevant systems are faulty.
4) ESCL
5) LCD display
Status Old New
LCD display
Bar graph border maintained when adjusting illumination brightness
Average fuel economy and instant fuel economy displayed simultaneously
-
Auto cruise indicator and supervision cluster DOT LCD graphic added for gasoline
engine ? newly adopted ?
-
DOT LCD winter mode deleted

6) TPMS/Global Warning Lamp Added
Status Standard type Supervision type
ECO indicator
Warming up
indicator
Diesel Gasoline
Diesel Gasoline