2012 SSANGYONG NEW ACTYON SPORTS ECU

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2. CONFIGURATION
1) Circuit Diagram
The engine ECU detects the operating conditions of cruise control system, and monitors the
braking performance, vehicle speed, road conditions and ESP system operation. If the engine
ECU determines that there are not any problem to drive in cruise control mode, the vehicle can be
operated by cruise switch signals (decelerating, accelerating, cruising).

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ECUREKES keyDiagnostic connector
1. SYSTEM CONFIGURATION
1) Components and Locations
Immobilizer warning lamp in instrument panelImmobilizer unit

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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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4. START FUNCTION
1) Immobilizer Function
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.
For the vehicle with the immobilizer, there can be a problem in starting the vehicle or the
system error:Immobilizer & rechargeable
unit sends encrypted code
to transponder (2)
Sends an encrypted signal to
unit as a response (3) Randomly transmitted code is changed
to an encrypted signal in immobilizer &
rechargeable unit (4)
System compares signal from
transponder and encrypted signal in
immobilizer & rechargeable unit (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
other than Ssangyong products.
When the key is close to any electronic or electric devices such as lighting equipment,
security keys or security cards.
When the key is close to a magnetic or metal object or a battery. a.
b.
c.
d.
Immobilizer &
rechargeable unitTransponder

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Immobilizer 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 the "ON"
position, the ECU (engine control unit)
transmits the challenge message to the
immobilizer & rechargeable unit.
(This is to verify whether the key is valid. If the
verification fails, it transmits re-verification
signals 3 times for 2 seconds. If three re-
verifications fail, it stops verification and starts
re-verification after 10 seconds.) (1)
ECUOnly when the two signals are identical, it recognizes the
key as the authorized one and transmits the positive
message to the ECU. (6)
The ECU enable the engine to be started. (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, please attend on the site.
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. ·
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·ON: In communication
Blinks twice at one second intervals: Immobilizer
system fault
Blinks once at 2 second intervals: Immobilizer unit
not coded
The immobilizer indicator does not come
on if the communication time between
immobilizer key and ECU is too short.
Instrument
panel

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2) Rechargeable Key Function (Charging)
If the communication between ECU (engine control unit), immobilizer & rechargeable unit and
transponder is establisehd successfuly (engine started), the rechargeable Li-ion battery in the
transmitter is charged.
The charging is made by creating the mutual induced electromotive force in the antenna coil and
by supplying the charging current to the battery in the key. This charging is not resulted from the
direct contact but the induced electromotive force of the coil in the transmitter according to the
change of magnetic field. For details, see the below:
Primary magnetic
induction coil Secondary magnetic
induction coil
The single coil has both immobilizer
function and recharge function.
For the immobilizer function, if the
transponder confirms the key as the
startable key by communicating with the
ECU, it induces a magnetic induction in the
primary coil by passing through the current
with a certain frequency to the immobilizer
coil. The induced electromotive force
created in this way, is stored in the
chargeable battery through the commutator
and the circuit. Primary magnetic
induction coil
(for charging
battery)
Chargeable batteryImmobilizer &
rechargeable unit

04-20
3. WARNING LIGHTS AND INDICATORS
ESP OFF Indicator
This lamp comes on when pressing
the "ESP OFF" switch or the ESP
system is defective. When the ESP
system is activated, this lamp blinks
and a chime sounds.
Immobilizer Indicator
This indicator comes on when the
ignition key is communicating with
the engine control unit for approx.
0.5 seconds.
Glow Indicator
When the ignition key is turned ON,
this indicator lamp comes on and the
combustion chamber is warmed up.
In the vehicle equipped with direct
injection type engine, this indicator
may come on very shortly or may not
come on.
Fog Lamp / Headlamp
High Beam Indicator
This lamp comes on when
the fog lamp or high beam
headlamp operates to
indicate the operating
status.Engine Oil Pressure Warning Ligh
This lamp comes on if there is any
fault in the engine oil system and
goes off when a certain amount of
time has elapsed after turning ON
the ignition switch.
Door ajar warning
light
This light comes on
when a door or
tailgate is either
opened or not
closed completely.Brake warning light
This warning light comes on
and warning buzzer sounds
when the parking brake is
applied and/or the brake fluid
level is lower than specified
level.Seat belt warning lamp
The seat belt warning light comes on
and the seat belt warning chime
sounds for 6 seconds when the
ignition switch is turned to "ON"
position unless the driver's seat belt is
securely fastened. This reminding
operation stops when the driver
fastens the seat belt.
Engine Coolant Overheat
Warning Light
When the coolant temperature is
abnormally hot (over 120℃), this
warning light blinks and a
warning buzzer sounds at 1 Hz.
(check cooling system)

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1. GENERAL INFORMATION
Six forward speeds
One reverse gear
A toruqe converter with an integral converter
lock-up clutch
Electronic shift and pressure controls
A single planetary gear-set
A double planetary gear-set
Two hydraulically controlled brake bands
Three multi-plate clutches
All hydraulic functions are directed by
electronic solenoids to control -
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- Automatic transaxle (DSI M78) ▶
TCU ▶
TCU is located under the driver's seat and controls the operations of transmission.
TCU receives the ignition voltage and has three connectors (16-pin, 12-pin, 20-pin).
TCU receives input signals from certain transmission-related sensors, gear select lever and
inhibitor switch. TCU also uses these signals when determining transmission operating strategy.
TCU uses PCAN to communicate with other units. And, TCU communicates with engine ECU,
ESP unit, TCCU and instrument cluster through CAN lines to control the gear shifting and to
recognize the current gear position.
DSI M78 Automatic Transmission is based on the transmission in the vehicle with D20DT engine
for EURO III or EURO IV or EURO V.
Differences: changed some components (torque converter and torque converter housing, some
pinion gears, sun gear), increased torsional damping force.
TCU