2012 SSANGYONG KORANDO fuel system

15-91490-00
3. ECU CONTROL
1) Functions
ECU receives and analyzes signals from various sensors and then modifies those signals into
permissible voltage levels and analyzes to control respective actuators.
ECU microprocessor calculates injection period and injection timing proper for engine piston speed and
crankshaft angle based on input data and stored specific map to control the engine power and emission
gas.
Output signal of the ECU microprocessor activates the injector solenoid valve to control the fuel injection
period and injection timing; so controls various actuators in response to engine changes.
Auxiliary function of ECU has adopted to reduce emission gas, improve fuel economy and enhance
safety, comforts and conveniences. For example, there are autocruise and immobilizer and adopted
CAN communication to exchange data among electrical systems (automatic T/M and brake system) in
the vehicle fluently. And the diagnostic tool can be used to diagnose vehicle status and defectives.
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47009b009600470052005f005c00b6006a004700880095008b> protected from factors like oil,
water and electromagnetism and there should be no mechanical shocks.
2) Control Functions
Controls by operating stages:
To make optimum combustion under every operating stage, ECU should calculate proper injection
volume in each stage by considering various factors.
Starting injection volume control:
During initial starting, injecting fuel volume will be calculated by function of temperature and engine
cranking speed. Starting injection continues from when the ignition switch is turned to ignition
position to till the engine reaches to allowable minimum speed.
Driving mode control:
If the vehicle runs normally, fuel injection volume will be calculated by accelerator pedal travel and
engine rpm and the drive map will be used to match the drivers inputs with optimum engine power. -
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01-6
2. SPECIFICATION
DescriptionDiesel 2.0 Engine
(D20DTF(Low CO2))
General Overall length (mm) 4,410 (4,500: with trailer hitch)
Overall width (mm) 1,830
Overall height (mm) 1,675
Gross vehicle
weight (kg)M/T 4WD : 2,065(2,110)
2WD : 1,905(1,920)
Curb vehicle
weight (kg)M/T 4WD : 1,740(1,785)
2WD : 1,580(1,595)
Fuel Diesel
Fuel tank capacity (ℓ)57
Engine Engine D20DTF
Number of cylinders/ Compression ratio 4 / 16.5:1
Total displacement (cc) 1,998
Camshaft arrangement DOHC
Max. power M/T 149 ps / 4,000 rpm
Max. torque 360 Nm / 1,500~2,800 RPM
Idle speed750 ± 20 rpm
Cooling system Water-cooled / forced circulation
Coolant capacity (ℓ)8.5
Lubrication type Gear pump, forced circulation
Max. oil capacity (ℓ)6.0
Turbocharger and cooling type Turbocharger, water-cooled

14-170000-00
2. OPERATING PROCESS
System diagram ▶
Operation ▶
EEM monitors the electric loads and battery conditions and controls the voltage to improve the fuel
economy and battery charging efficiency.
EBS on “-“ terminal of battery sends the battery information (voltage, current, tem
perature and
SOC) to engine ECU with LIN communication.
Engine ECU outputs the information from EBS and regulating control signal (PWM) according to the
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9600990055>
Engine ECU controls the magnetic resistance between stator coil and rotor coil by controlling the
current in rotor coil according to PWM duty value.
The alternating voltage induced to stator coil is converted to direct voltage by rectifier. And, EBS
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9b008c009900950088009b009600990055> -
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05-6
SVC class
Previous Current
Changed from figure type to bar graph type.
6) Average fuel economy reset and calibrated automatically when
refilling
7) Instant fuel consumption display changed
8) Pre-warning indicator for engine overheat removed
Both SVC and STD class
Previous Current
Reset by user Reset by user and automatic reset when refilling
9) TDMS logic changed
SVC class
Current
TDMS (Tier Direction Management System) is not displayed when EPS warning lamp comes on.
SVC class STD class
Pre-warning indicator for engine overheat is removed.
EPS warning lampTDMS displayLCD not displayed
EPS warning lamp
comes onLCD screen is not
displayed.

05-12
Low fuel level warning lamp ▶
Warning lamp
(amber)
Engine overheat warning lamp ▶
Warning lamp
(red)
Door ajar ▶
Warning lamp
(red)
Seat belt reminder ▶
Warning lamp
(red)
Air bag ▶
Warning lamp
(red)
This lamp comes on if the fuel level is approx. 10 ℓ or below.
However, the fuel level may change slight depending on vehicle
condition, inclination of the road, etc. Also, it blinks if there is a short or
open circuit between the fuel level sensor and cluster.
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8f0090009a0047009300880094009700470089009300900095>ks at an
interval of 1 second, a message is displayed, the warning sounds once
through the speaker and the buzzer sounds at an interval of 0.5 seconds.
This lamp comes on when any door is open or not closed completely.
(both STD and SVC class)
This lamp comes on when the ignition switch is pressed ON.
It keeps coming on if the driver's seat belt is not fastened.
This lamp comes on when the ignition switch is pressed to the ON mode.
Then, it goes off if the system is normal.
If this lamp stays on while driving, it means that the air bag system is faulty.

05-48
Pin No.Message
Operating condition
Domestic Export
Cruise control This message comes on when the ECO cruise mode
is deactivated.
EMSThis message comes on when the engine is faulty.
LampThis message comes on when the tail lamps are ON
with the ignition in the "OFF" or "ACC" position.
SUNROOF
SYSTEMFor the vehicle with SKM, this message comes on
when the sunroof is open with the ignition in the "OFF"
or "ACC" position. For the vehicle without SKM, this
comes on when the sunroof is open with the ignition in
the "OFF" position and the key removed.
Low fuel level This message comes on when the remaining fuel is
insufficient.
ESP checkThis message comes on when the ESP system is
faulty.
ABS check This message comes on when the ABS system is
faulty.
Engine oil level
checkThis message comes on when the engine oil level is
low. Pin No. Message Operating condition

02-93680-01
2. FEATURES
1) Advantages
Early Downshift with Hard Braking and Skip Shifts ▶
When heavy braking is detected, the transaxle downshifts early and skips gears to provide increased
engine braking to provide gear selection for tip-in.
Gear Hold going Uphill/Downhill ▶
If the accelerator pedal is released when traveling uphill, upshifts are prevented to reduce busyness on
grades. If the accelerator pedal is released when traveling downhill, upshifts are prevented to enhance
engine braking.
Drive and Reverse Engagement ▶
A soft engagement feature avoids harsh take up of drive when selecting Drive or Reverse. This is
achieved by limiting engine speed and engine torque which results in a rapid, but progressive
engagement of either Drive or Reverse when moving from the Park or Neutral positions. Drive and
Reverse engagements from either Park or Neutral are performed in less than 2.2 seconds. There is no
drive engagement prevention strategy implemented on the transaxle system as there is sufficient engine
strategy to protect the system. However, reverse engagement is prevented until engine speed is less
than 1,400 rpm and the accelerator pedal position is less than 12% and vehicle speed is less than 10
km/h.
Converter Clutch Lock-Up In All Gears ▶
The transaxle features converter clutch lock-up in all gears. This feature provides improved fuel economy
and vehicle performance. It also improves transaxle cooling efficiency when towing heavy loads at low
speeds, e.g. in city driving or hill terrain.
Embedded Memory Module (EMM) ▶
The embedded memory module (EMM) is
matched to the transaxle’s valve bodies during
transaxle assembly to ensure refined shift quality.
The EMM is used to store data such as valve body
calibration data and valve body serial number.
Upon installation, the TCU will download the data
from the EMM and utilize this data in the operation
of the transaxle.

02-10
2) Transaxle Cooling
The transaxle cooling system ensures rapid warm-up and constant operating temperature resulting in
reduced fuel consumption and refined shift quality.
It also includes a cooler by-pass within the hydraulic system to allow sufficient lubrication to the transaxle
drivetrain in the event of a blockage in the transaxle cooler.
3) Shift Strategy
Gear Change ▶
Transaxle gear change is controlled by the
TCU. The TCU receives inputs from various
engine and vehicle sensors to select shift
schedules and to control the shift feel and
torque converter clutch (TCC) operation at each
gear change.
Coast down ▶
Coast down down shifts occur at 0% pedal
when the vehicle is coasting down to a stop.
Torque Demand ▶
Torque demand down shifts occur
(automatically) when the driver demand for
torque is greater than the engine can provide at
that gear ratio. If applied, the transaxle will
disengage the TCC to provide added
acceleration.