2012 SSANGYONG KORANDO Valve body

01-50000-00
Right side View ▶
Wide band oxygen sensor
Pre-CDPF pressure port
Rear exhaust gas temperature
sensor
CDPF assembly
E-VGT turbocharger Post-CDPF pressure port
Oil drain plug
Left side View ▶
Thermostat assembly
Knock sensor 1 connector
Variable swirl valve assemblyOil cooler assembly
E-EGR valve
Knock sensor 2 connector
E-EGR solenoid valve
EGR cooler
Electronic throttle body
T-MAP sensor
Oil level switch
Front exhaust gas temperature
sensor

02-110000-00
3. CHECK AND INSPECTION
1) Cylinder
(1) Compression pressure test
Specified value ▶
Compression ratio
16.5 : 1
Test conditionat normal operating temperature (80˚C)
Compression pressureStandard32 bar
Minimum18 bar
Differential limit between cylindersMaximum 3 bar
The compression pressure test is to check the conditions of internal components (piston, piston ring,
intake and exhaust vale, cylinder head gasket). This test provides current engine operating status.
Before cranking the engine, make sure that the test wiring, tools and persons are keeping away from
moving components of engine (e.g., belt and cooling fan).
Park the vehicle on the level ground and apply the parking brake.
Do not allow anybody to be in front of the vehicle. -
-
-
(2) Cylinder pressure leakage test
If the measured value of the compression pressure test is not within the specifications, perform the
cylinder pressure leakage test.Specified value ▶
Perform this test in the sequence of firing order.
Do not test the cylinder pressure leakage with wet type test procedure. (do not
inject the engine oil into the combustion chamber) -
-
Test condition: normal engine operating
temperature (80˚C)Specified value
Whole engine below 25%
at valve and cylinder head gasket below 10%
at piston ring below 20%

04-6
1. OVERVIEW
The intake system for D20DTF engine is equipped with an electric throttle body which includes a flap.
This flap is controlled by an electrical signal to cut off the intake air entering to the engine when the
ignition switch is turned off. To be sure to get the optimized swirl in intake manifold, the swirl valve and
dual type port have been adopted. And, the improved HFM sensor has been adopted to control the
intake air volume more precisely.
2. COMPONENTS
1719-02 Swirl control valve
Operates variably in accordance with the engine
load and rpm.
* For more information, refer to Chapter "Engine
Control".
1719-01 Intake manifold
Passage for intake air during the operation of
variable swirl valve
1719-16 Electric throttle body
* For more information, refer to Chapter "Engine
Control".
2330-01 Intercooler assembly

15-4
Rear exhaust gas temp.
sensor
Electronic throttle
bodyT-MAP sensor
(Temp.+Pres.)
Injector (C3I)
1. MAJOR COMPONENT
Oxygen sensorFront exhaust gas temp.
sensor
Camshaft position
sensor
Glow plug
Variable swirl valve
Knock sensor (2)Oil level sensor

15-24
HFM sensor
(intake air temp.)
Oxygen sensorD20DTF ECU
T-MAP sensor
(5) EGR control
a. Overview
The EGR (Electric-Exhaust Gas Recirculation) valve reduces the NOx emission level by recirculating
some of the exhaust gas to the intake system.
The major difference with the previous EURO 4 type, is that the DC motor with improved response rate
according to the EURO 5 regulation. The solenoid type actuator is used in the conventional model, but in
this new model, the DC motor type actuator with improved response rate is adopted. Also the hall senso
r
which provides a more stabilized signal than the potentiometer, and the EGR bypass flap which
improves engine warming up efficiency are also used. The HFM sensor and the position sensor are
used to feedback the amount of EGR for both EURO 4 and EURO 5.
b. Components
Electronic
throttle body
Coolant
temp.sensor
E-EGR valveCrankshaft posi.
sensor
Accelerator
pedalE-EGR cooler

15-26
d. Bypass control for EGR cooler
1. Cooler temperature
<007e008f008c00950047009b008f008c0047008a00960096009300880095009b0047009b008c00940097008c00990088009b009c0099008c00470090009a00470089008c00930096009e0047005e00570b4500530047009b008f008c0047008c009f008f00
88009c009a009b0047008e0088009a00470090009a00470089>ypassed the EGR cooler.
2. Exhaust gas temperature
<007e008f008c00950047009b008f008c0047008c009f008f0088009c009a009b0047008e0088009a0047009b008c00940097008c00990088009b009c0099008c00470090009a00470089008c00930096009e0047005a005700570b4500530047009b008f00
8c0047008c009f008f0088009c009a009b0047008e0088009a> is bypassed the EGR cooler.
Otherwise, PM could be increased due to too low exhaust gas temperature.
e. Control elements for EGR system
Accelerator pedal (engine load) - Indicates the driver's intention and engine load. If the load goes up,
the EGR ratio is decreased.
T-MAP (boost pressure map stored in ECU) - Compensates the difference in boost pressure by
adjusting EGR ratio.
Engine rpm - Used as the signal for determining EGR operating range.
Coolant temperature - When the coolant temperature is low, NOx is decreased but PM could be
increased. So, to reduce PM, decrease EGR ratio when the coolant temperature is low.
Intake air mass and temperature - HFM sensor measures the intake air mass to calculate the actual
EGR volume. If the air mass is larger than programmed value in map, EGR ratio will be higher.
EGR position sensor - Detects the actual opening angle of EGR valve and performs feedback
function according to PWM control by ECU.
Wide band oxygen sensor - Detects the oxygen volume in exhaust gas to check if the EGR ratio is
proper.
Electronic throttle body - Keeps EGR ratio to optimized level by controlling the throttle body in EGR
operating range (decreasing pressure in intake manifold). -
-
-
-
-
-
-
-

15-310000-00
HFM sensor
(air mass)
CDPF
(7) Wide band oxygen sensor
a. Overview
For diesel engine, combustion is not performed at the optimum (theoretically correct) air-fuel ratio and
the oxygen concentration is thin in most cases. So the wide-band oxygen sensor is used for this kind of
engine, and this sensor is a little different from the one that used for gasoline engine. The combustion in
diesel engine is controlled by fuel injection volume. Therefore, the wide band oxygen sensor should be
used in diesel engine. This sensor measures the air-fuel ratio in very wide range, and is also called full
range oxygen sensor.
The wide band oxygen sensor measures the oxygen density in exhaust gas and sends it to ECU to
control the EGR more precisely. -
b. Components
D20DTF
ECU
EGR valveElectronic
throttle bodyCoolant temp.
sensor
Oxygen
sensorInjector (C3I)

01-4
Engine mounting bracket
2. MAJOR COMPONENTS
Front View ▶
Cylinder head front cover
Timing gear case cover
EPS idler pulley
Alternator
Water pump pulley
A/C compressor
Crankshaft pulley
Oil pan assembly
Rear View ▶
Camshaft position sensor
Breather nipple
Purge control solenoid valveCoolant temperature sensor
Electronic throttle body
T-MAP sensor
MCC complete
VIS solenoid valve Cylinder head cover
Dual mass flywheel
Crankshaft position sensor
Hydraulic tensioner assembly