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15-31490-00
1. ENGINE DATA LIST
Data Unit Value
Coolant temperature℃ 0.436V (130℃) ~4.896V (-40℃)
Intake air temperature
℃-40~130℃
(varies according to ambient air temperature or
engine mode)
Idle speed rpm700±50(P/N), 600±(D)
Engine load % 18~25%
Mass air flow kg/h 16~25kg/h
Throttle position angle°TA 0° (Full Open) ~ 78° (Close)
Engine torque Nm varies according to engine conditions
Injection time Ms -
Battery voltage V 13.5V~14.1V
Accelerator pedal position
1V 0.3~4.8 V
Accelerator pedal position
2V 0.3~2.4 V
Oxygen sensor mV 0~5 V
OCV (Oil Control Valve) % 0~100%
VIS solenoid valve 1=ON / 0=OFF -
A/C compressor switch
1=ON / 0=OFF-
Full load 1=ON / 0=OFF -
Knocking control 1=ON / 0=OFF -
Brake switch 1=ON / 0=OFF -
Cruise control 1=ON / 0=OFF -
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15-150000-00
(4) Features
Determines the ignition timing according to input signal
The ECU always analyzes the following elements when determining the ignition timing. 1.
Crankshaft position sensor
Camshaft position sensor
Coolant temperature sensor
Intake air temperature/air mass -
-
-
-
Warm-up of catalytic converter
The ignition timing is retarded for about 20 seconds to operate the catalytic converter according to the
operating temperature under the following conditions: 2.
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The idle speed is increased by the idle speed control to help warming up of the catalytic converter -
-
Idle speed control
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The ignition timing control can be performed faster than the control through the throttle valve.
Fuel cut-off in deceleration
The ignition timing is retarded temporarily to prevent abrupt increase of the torque when the
combustion is restarted.
Intake air temperature/coolant temperature
The ignition timing is retarded to prevent knocking if the intake air temperature or coolant temperature
is high. The ignition timing is retarded in the following cases. 3.
4.
5.
The intake air temperature is above 30°C.
The coolant temperature is above 105°C. -
-
The ignition timing retard for intake air temperature and for coolant temperature is added up for
correction.
ESP/ASR control mode
The ignition timing is retarded to reduce engine torque as fast as possible under the ESP/ASR
control mode.
Knocking control
If knocking occurs in the cylinder, the ignition angle of the corresponding cylinder is retarded. The
coolant temperature is 15˚C to 40˚C when starting. 6.
7.
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15-18
6) Cooling Fan Control
(1) Overview of Cooling Fan and A/C Compressor
The cooling system maintains the engine temperature at an efficient level during all engine operating
conditions. The water pump draws the coolant from the radiator. The coolant then circulates through
water jackets in the engine block, the intake manifold, and the cylinder head. When the coolant reaches
the operating temperature of the thermostat, the thermostat opens. The coolant then goes back to the
radiator where it cools. The heat from automatic transaxle is also cooled down through the radiator by
circulating the oil through the oil pump. There are two cooling fans (180W+120W) in G20DF engine. ECU
controls the electric cooling fans with three cooling fan relays to improve the engine torque and air
conditioning performance.
(2) Components
Refrigerant pressure
sensorCoolant temperature
sensorG20DF Engine
ECURelay box in engine
compartment
A/C compressorCooling fan moduleT-MAP sensor
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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
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14-50000-00
3. BASIC INSPECTION
1) Battery Terminal
Make sure the terminal connections are
securely tightened. If the terminals are
corroded, clean them or replace the battery. -
* Cleaning
Remove the corrosion or dirt with a wire brush
or sand paper, and then wash out with
lukewarm soapy water.
2) Measuring the Voltage Drop
Measuring at battery terminal ▶
Measure the voltage between battery
terminal (+. -) and wiring clamp. -
Specified valuebelow 0.3V
If the terminals are corroded, clean and
retightening them. If the specified tightening
torque cannot be kept, replace the clamp.
Terminal (+)
Terminal (-)
Terminal (+): 4 ~ 5 Nm
Terminal (-): 6 ± 1Nm
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06-278510-00
4WD LOCK switch
This switch is of push lock type, which
enables to increase/decrease the
torque to the rear wheels in AWD
mode.
Steering wheel heating switch
This switch is of push return type,
which is used to activate or deactivate
the steering wheel heating function.
ESP OFF switch
The ESP OFF switch is of push return
type, which is used to stop or resume
the ESP function.
4WD LOCK switch
This switch is of push lock type, which
enables to increase/decrease the
torque to the rear wheels in AWD
mode.
HLLD
(Headlamp Leveling Device)
The headlamp aiming can be adjusted
by using this dial-type switch.
Rear fog lamp switch
(EU ONLY)
This switch is of push return type,
which sends ON/OFF signal to the
BCM so that the BCM can switch on
the lamps by activating the rear fog
lamp relay.
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01-8
Fuse for vehicle with EPS
The vehicle with EPS has EPS fuse (80A)
mounted to the positive (+) terminal of the
battery not in the fuse box.
EPS unit
The ECU controls the electric power
steering system depending on the driving
conditions, based on the signals from the
torque and angle sensor.
HECU (Hydraulic & Electronic Control Unit)
HECU for ABS HECU for EPS
The HECU (Hydraulic & Electronic Control Unit) determines the slip conditions of vehicle wheels by
calculating each wheel's speed and the increment/decrement of speed based on the information
detected by the sensors, and controls the pumping and boosting/reducing/keeping pressure by
operating the valve and motor of HECU.
2. MOUNTING LOCATIONS (CHASSIS)
Moto
HU (Hydraulic Unit) ECU (Electronic
Control Unit) Moto
HU
(Hydraulic Unit) ECU (Electronic
Control Unit)
Motor
angle (8P)
Motor power (3P)Torque angle
sensor (8P) Battery (2P) Connector to
vehicle (8P)
Fuse for EPS
Steering wheel angle sensor (SWAS)
The steering wheel angle sensor is mounted between
the steering column and the steering column shaft. It is
commonly used by the ESP (Electronic Stability
Program) system. And it receives signals of the steering
wheel angle sensor from the ESP HECU (Hydraulic &
Electronic Control Unit).
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01-90000-00
G-sensor(4WD, ABS)
For the vehicle with the ABS, a speed difference
between the wheels is not noticeable as all the
wheels are slipping during abrupt braking.
Therefore, the vehicle needs the speed information
from other sensors other than the wheel speed
sensor. The longitudinal acceleration sensor (G-
sensor) is used for this case. It controls the ABS by
using the signals from the sensor during abrupt
braking and acceleration.
TCU unit
The transmission control unit (TCU) is installed under
the driver seat, and controls the transmission. The
TCU is operated by the ignition power supply and
receives and processes the following information from
the inner sensors through CAN buses.E-coupling unit
The E-coupling unit is a control unit which
determines the magnetic force by
considering CAN signals (wheel speed,
engine torque, pedal opening, ABS/ESP
CAN signals, etc.) from other ECUs.
TGS Lever assembly
The TGS communicates with TCU
(Transmission Control Unit), ECU,
ESP HECU and instrument cluster
to let the driver select the desired
transmission gear and to maintain
the desired driving condition. Also,
the tip switch is installed on the
lever knob and the steering wheel
so that the driver select the gear
manually when the shift lever is in
"M".Sensor cluster
The sensor cluster is linked to
the sensors on the unit board
and CAN interface. And they
are housed in one case and
mounted to the body.