2012 SSANGYONG KORANDO engine

04-6
2. INPUT/OUTPUT DIAGRAM
Major functions ▶
Passive LOCK/UNLOCK by outside door handle switch
Passive UNLOCK by tailgate open switch
Passive START by START switch
Engine ECU and High speed CAN communication
BCM, Instrument cluster and Low speed CAN communication
RF communication for REKES operation
Smart key system warning function
Smart key registration (up to 3 keys) 1.2.
3.4.
5.6.
7.8.

04-78712-03
1) Coding
(1) Coding process
Coding for each unit ▶
(2) Operation with/without smart key/EMS registration
Passive
LOCK/UNLOCKIgnition status
changeSTARTING THE
ENGINE
New - O 10 times
Smart key registration O O -
EMS REGISTRATION - - -
Smart key & EMS
registrationOOO
3. OPERATIONS

04-8
(3) Coding after replacing components
When replacing smart key and SKM: Register smart key and EMS
When replacing EMS: Register EMS -
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(4) VIRGIN power control
If the SKM is not coded at all, the power control is performed as follows:
Virgin control by TM & EMS ▶
If there is no variant code value from the EMS and no value is stored in the inactive memory area
after the ignition status is changed to IGN ON, the START signal is not sent.Power control ▶
The coding is available only when the ignition status is IGN1 ON.
Engine start ▶
If the SKM is in Virgin condition, the engine cranking can be performed up to 10 times.
No variant code in memory: IGN ON -> Check variant code -> Operate START switch -> Check
ignition status -> Request START
Variant code stored in memory: Normal operation -
-

04-198712-03
4) Smart Key Verification Time Control
(1) Pre-verification timer
When the operation signal from the START switch is received, the START & power control functions can
be performed without smart key verification.
(2) Immobilizer verification timer
The immobilizer verification status indicates that it is possible to respond to the request message sent
from the EMS to deactivate the immobilizer. The SKM verified a smart key and the engine can be
started.
The 30-second immobilizer verification time is started when:
the ignition status is changed to IGN by the START switch while the pre-verification timer is activated.
the ignition status is changed to IGN by the smart key verification while the pre-verification timer is
stopped; the SKM verified a smart key by the brake switch signal while the immobilizer verification
timer is stopped or the ignition status is IGN ON.
the SKM verified a smart key successfully if the immobilizer verification timer is stopped with IGN
ON/immobilizer verification /brake switch ON. -
-
-
Condition SKM operation
- when door closed signal is input with - B+ or ACC ON
- when brake is applied with - B+ or ACC ON
- when START switch is operated with - B+
- when smart key is inserted into slot & brake switch is
operated or START switch is operated with - B+Once the vehicle interior verification
is completed, 30 sec. pre-verification
timer is started
when the ignition is turned OFF with IGN ON and engine
running 30 sec. pre-verification timer is
started without re-verification
Timer deactivation conditions: after 30 sec. has passed, IGN ON, Outside door handle switch ON,
entering theft deterrent mode when door condition is changed
IGN1 OFF
30 sec. has passed after immobilizer verification
Any door is opened and then closed when all doors are closed & smart key out
When the engine starts to run, the immobilizer verification status is determined, and the immobilizer will
not be deactivated until the ignition status is changed to IGN/ACC/OFF.
The immobilizer is not deactivated when the key out warning condition is met while the engine is
running. (when the RND is received by the EMS reset while the engine is running)
When attempting to start the engine without immobilizer verification, the system performs smart key
verification procedures, and sends the engine start request to EMS only when the verification result is
normal. -
-
-
*
*
*Entry conditions ▶
Deactivation condition ▶

04-20
5) Start & Power Mode Control
The smart key system performs the smart key verification inside the vehicle to operate the
'Passive/Emergency start' and 'Power mode control'. It performs the following functions according to the
verification result.
Power mode control: Ignition status change
Immobilizer communication with EMS
Start request transmission to EMS -
-
-
(1) Hardware interface
Replace the input shaft speed sensor with EMM or A/T and perform the TCU initialization and
coding work. ▶
Start button
- The SKM receives the signals from the START button and changes the ignition status or
stars/stops the engine.
Immobilizer holder antenna
- The SKM communicates with immobilizer antenna to verify the smart keys. 1.
2.
Output ▶
ACC relay
- The SKM operates the ACC relay.
IGN1 relay
- The SKM operates the IGN1 relay.
IGN2 relay
- The SKM operates the IGN2 relay.
START ready display
- The SKM operates the START ready display.
ACC status display
- The SKM operates the ACC status display.
ON status display
- The SKM operates the ON status display.
LF antenna
- The SKM controls the LF antenna outputs. 1.
2.
3.
4.
5.
6.
7.

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(2) Ignition status change
The ignition status is changed to OFF, ACC ON, IGN ON and engine cranking by one START/STOP
button.
The SKM cuts the power for IGN2 and ACC relays while the engine is cranking as cutting the electric
load is necessary.
The SKM monitors the brake pedal status through the hardware signals.
The ignition status change is available when the engine START/STOP button is pressed.
The SKM uses the EMS (engine condition) and ABS/ESP (FR vehicle speed) signals sent through the
P-CAN bus (High Speed CAN).
When the smart key battery is discharged and the driver inserts the smart key into the immobilizer slot
in emergency mode, the smart key verification is performed if the brake or START switch is pressed
before the ignition status is changed (ACC ON, IGN ON).
Ignition status change during driving 1.
2.
3.
4.
5.
6.
7.
When the engine START/STOP switch is pressed for 3 sec. or more at more than 3 km/h, the
ignition status is changed from IGN to ACC.
If the engine START/STOP switch is pressed again, the ignition status is changed from ACC to
IGN.
The 4 vehicle speeds are abnormal (CAN signal timeout, abnormal signal):
If the engine START/STOP switch is pressed for 3 sec., the ignition status is changed from IGN
to ACC. If the switch is pressed again, the ignition status is changed from ACC to OFF (DTC
set). -
-
The SKM changes the ignition status as follows: 8.

04-22
When the ignition status is changed, the SKM communicates according to the body network
conditions as follows: 9.
OFF → ACC: Keep communicating for 5 sec.
OFF → IGN: Keep communicating
ACC → IGN: Keep communicating
IGN → Cranking: Keep communicating
Cranking→ IGN: Keep communicating
IGN → ACC: Keep communicating for 5 sec.
ACC → OFF: Keep communicating for 5 sec.
IGN → OFF: Keep communicating for 5 sec. -
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-
-
-
-
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(3) Engine start
When the START button is pressed with the brake pedal applied and gear selector lever in P or N
position, the SKM performs the immobilizer verification and sends the engine START request signal
to the EMS if a normal coded smart key is found.
When the .engine start request signal from the START switch is received, the SKM sends the start
request signal through the PCAN and the smart key location signal through the BCAN to crank the
engine.
The SKM cuts the power for IGN2 and ACC relays while the engine is cranking as cutting the electric
load is necessary.
The SKM receives the engine start status signal from the EMS through the PCAN.
The SKM turns on the ACC/IGN2 relays after the engine cranking and sends the signal for [IGN after
starting] through BCAN.
When the START button is pressed and engine cranking request1 signal is sent, the EMS cranks the
engine after checking the engine warming up. If the engine cranking request2 signal is sent, the EMS
cranks the engine without checking the engine warming up. 1.
2.
3.
4.
5.
6.
Engine cranking request1:
When the START switch is pressed briefly under a normal condition
Engine cranking request2:
When the START switch is pressed once again while the engine cranking request1 signal is sent,
OR When the START switch is pressed for 3 sec. or more -
-
Starting engine while driving 7.
The engine start request signal is sent when the START switch is pressed, provided that the
vehicle speed is less than 10 Km/h or no vehicle speed signal is input, the gear selector lever is in
N position and the brake switch is ON with IGN ON (30 sec. verification is not required).
The engine start request signal is sent regardless of the brake signal when the START switch is
pressed, provided that the vehicle speed is 10 Km/h or more and the gear selector lever is in N
position with IGN ON (30 sec. verification is not required). -
-

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(4) Engine stop
When the START button is pressed at the vehicle speed of 3 km/h or less, the SKM turns off the IGN
relay to stop the engine.
When the vehicle speed is 3 km/h or more or no speed signal is input, the SKM performs the
following functions: 1.
2.
When the START switch is pressed for 3 sec. or more at more than 3 km/h, the ignition status is
changed from IGN to ACC.
If the switch is pressed again, the ignition status is changed from ACC to IGN.
When the START switch is pressed for 3 sec. or more with no vehicle speed signal (CAN signal
timeout, abnormal signal), the ignition status is changed from IGN to ACC. If the switch is pressed
again, the ignition status is changed from ACC to OFF. -
-
When the START button is pressed and held with IGN ON, the ignition status is changed to OFF.
When the START button is pressed briefly, the ignition status is changed to ACC ON. 3.
(5) ACC ON/Power OFF
The SKM changes the ignition status to OFF from ACC ON when:
the engine START/STOP button is pressed with the brake pedal released after the ignition status is
changed from IGN ON to ACC ON.
the REKES LOCK or passive LOCK is operated with ACC ON.
the BCM sends the driver's door open signal.
12 minutes have passed with ACC ON. 1.
2.
3.
4.Except brake switch signal input
For the vehicles with A/T, when the START switch is pressed for 10 sec. or more, the ignition
status is changed to IGN ON and the engine start request signal is sent regardless of the brake
signal, provided that the initial ignition status is ACC ON and the gear selector lever is in P or N
position. *-