ignition SSANGYONG KORANDO 2012 Service Manual

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.

04-218712-03
(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). -
-

04-238712-03
(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. *-

04-26
7) START Switch Control
Status Turning on conditions
OFF IGN OFF, IGN ON & engine ON
Green Engine can be started by START switch operation/Engine is cranking (IGN OFF &
brake switch ON, ACC ON & brake switch ON, IGN ON & brake switch ON, etc.)
Yellow ACC ON
Red IGN ON & engine OFF or error
Ignition status indicator on START switch ▶
(1) START switch indicator
START switch indicator output ▶
* When an error occurs, the indicator is illuminated for 0.5 sec. and goes off for 0.5 sec., and
then flashes for 10 sec.
* When all the doors are closed with B+, the LED does not flash.
Start switch indicator control ▶
Door coupled function -
1. When the driver's door is opened, the switch indicator comes on (the indicator remains on
while the door is open).
2. The indicator goes off immediately when the interior lamps are turned off.
3. The indicator goes off after the driver's door is closed and 10 sec. ON timer is activated.
4. The indicator is reset when the driver's door is opened.
Tail lamp coupled function -
Ignition
statusPower OFF
ACC ON IGN ON
(STOP)IGN ON
START ErrorRemark
Door
CloseDoor
Open
Indica-
tion
Indicator
statusOFF OFF Orange Red OFF Green Red
OFF OFF ON ON OFF ON Flashing
Illumina-
tionOFF TIME
Controlled by SKMLED
Engine START/STOP

04-298712-03
(4) Smart key battery discharge warning (3) Smart key verification fail warning
When the verification is requested for ignition status change or engine starting and no verified smart key
is in the vehicle, the SKM sends the [smart key verification status] signal, which indicates that the
verification has failed, for up to 10 sec. until the verification fail conditions are deactivated.
Verification fail detection and transmission conditions ▶
When the ignition status is changed after a smart key is verified by the START switch ON input, the
SKM sends the verification status for 10 sec. -Normally, the smart key verification warning is one of the smart key fail conditions. -
Ignition status change
(OFF ->ACC) / (OFF ->IGN)/(ACC ->IGN) / (IGN -> engine ON) *
If above conditions are met again, the SKM re-verifies a smart key and sends the verification status for
another 10 sec.
When the ignition status is changed by the transponder verification while the smart key status is sent
through the BCAN, the SKM sends the smart key verification signal and also sends the transponder
verification signal for 10 sec. -
-
If low smart key battery is detected during the verification process for ignition status change or engine
start, the SKM sends the signal for [smart key battery low voltage warning] to the BCM and instrument
cluster through the BCAN for up to 10 sec. until the warning condition is deactivated.
Smart key battery discharge confirmation and deactivation ▶
If the smart key battery low voltage is confirmed, the SKM sends the smart key battery low voltage
warning signal.
If the smart key battery is in normal condition, the SKM sends the smart key battery low voltage
warning deactivation signal.
The smart key is the last used key. -
-
*
(5) Transponder verification fail warning
If a verified smart key is not found by the key verification process, the SKM sends the information that
indicates the key is not verified to the instrument cluster through the BCAN for up to 10 sec. until the
verification fail condition is deactivated.
The SKM sends the transponder verification warning when the verification has failed with the smart key
inserted into the immobilizer holder. -
Transponder verification fail detection and transmission conditions ▶
When the ignition status is changed after the transponder is verified by the START switch ON input,
the SKM sends the transponder verification status for 10 sec. -

04-30
Ignition status change
(OFF ->ACC) / (OFF ->IGN)/(ACC ->IGN) / (IGN -> engine ON) *
If above conditions are met again, the SKM re-verifies the transponder and sends the verification
status for another 10 sec.
When the ignition status is changed by a smart key verification while the transponder verification is
processed, the SKM sends the signal for [transponder verification fail], and sends the smart key
verification status for 10 sec. -
-
(6) Transmission position warning
When the gear selector lever is in a position other than P or N with IGN ON and engine started, the
SKM sends the [gear position warning] signal to the instrument cluster through the BCAN for up to 10
sec. until the operating conditions are deactivated.
Transmission position warning deactivation ▶
When re-attempting to start with IGN1 ON and transmission in P or N -
(7) SKM error alert
The SKM sends the SKM error alert signal to the instrument cluster through the BCAN for up to 10 sec.
when an in ignition status related error or passive entry system error occurs.
SKM error transmission conditions ▶
When any of the following errors is detected and a DTC is set, the SKM sends the error alert signal for
10 sec.
B+ (power) low voltage
B+ (logic) low voltage
ACC ON fail
ACC OFF fail
IGN1 ON fail
IGN1 OFF fail
IGN2 ON fail
IGN2 OFF fail
Short circuit in START switch 1.
2.
3.
4.
5.
6.
7.
8.
9.
The SKM sends the corresponding signal only once for 10 sec. when any of the above errors is detected
with IGN OFF/ON. It sends the signal again when a new error occurs.

04-318712-03
(8) Brake not working alert
The SKM sends the brake not working alert signal for 10 sec. every time the ignition status is changed
after the 1st cycle (OFF-ACC-IGN-ACC-OFF) while the brake is not operated.
when the brake pedal is depressed, the system is reset and alert deactivation signal is sent.
when the 10 min. timer is terminated -
-
(9) Clutch not working alert
The SKM sends the clutch not working alert signal for 10 sec. every time the ignition status is changed
after the 1st cycle (OFF-ACC-IGN-ACC-OFF)
while the clutch is not operated.
when the clutch pedal is depressed, the system is reset and alert deactivation signal is sent.
when the 10 min. timer is terminated -
-
(10) Smart key slot detection alert
The SKM sends the smart key slot detection alert signal for 10 sec. when a smart key inserted into
the slot is detected with IGN OFF and the driver's door open. -
(11) SKM alert priority
1 Smart key out alert EXTERIOR
1
2 Smart key reminder alert EXTERIOR
3 Smart key verification fail alert INTERIOR
2 4 Transponder verification failure alarm INTERIOR
5 Smart key battery low voltage alert INTERIOR
6 Transmission position alert INTERIOR
7 SKM error alert INTERIOR
8 Brake alert INTERIOR
9 Clutch alert INTERIOR
10 Smart key slot reminder alert INTERIOR1
Warning cancellation requirements ▶
Warning cancellation requirements ▶
Warning transmission conditions ▶
Warning cancellation requirements ▶
when the smart key is removed, the alert deactivation signal is sent.
when the 10 min. timer is terminated -
-

05-4
2. MAJOR CHANGES
SVC class
Previous Current
Rearranged pre-warning indicator which comes on and goes off when turning ignition on.
1) Steering wheel heating indicator added
2) Pre-warning indicator rearranged
3) Winter mode indicator added(DSL only)
STD class
Previous Current
Winter mode indicator added (one green LED)
SVC class
Previous Current
One indicator added since steering wheel heating function is equipped.

05-118010-01
Indicator
(green)
Headlamp high beam indicator ▶
Front fog lamp indicator ▶
Side light indicator ▶
Indicator
(blue)
Indicator
(green)
Indicator
(amber)
Glow indicator(DSL only) ▶
Indicator
(red)
Fuel filter indicator(DSL only) ▶This indicator comes on when the tail lamp is switched on.
This indicator comes on when the ignition switch is turned to the "ON"
position and will go off when the glow plugs are sufficiently heated.
This indicator comes on when the water level in the fuel filter exceeds a
certain level. This lamp comes on when the headlamp high beam is operated.
This indicator comes on when the fog lamp switch is operated after the tail
lamps comes on.
3) Details of Warning Lamps and Indicators