Page 405 of 1336

Coolant temp.
sensor
Refrigerant pres.
sensor
A/C compressor
ECU
D20DTFDSI 6 A/T
(ATF temp.)
Cooling fan module
HFM sensor
(Intake air
temperature)
Engine room
relay box
(8) Cooling fan control
a. 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 (200W+150W) in D20DTF engine. ECU controls the electric cooling fans
with three cooling fan relays to improve the engine torque and air conditioning performance.
For details about A/C compressor and refrigerant pressure sensor, refer to Chapter "Air Conditioning
System" in "Body" section.
b. Components
Page 410 of 1336
0000-00
d. Control conditions
Operation Operating condition PTC Heater
HI
(PTC2)
PTC HI ON
LO
(PTC1)
PTC LO ON
Stop- A/C blower switch OFF
- Defective ambient air temperature sensor
(including open or short circuit)
- Engine cranking
- Low battery voltage (below 11V)
- During pre-glow process (glow indicator ON)
Operation diagram for PTC heater LO (step 2)
Page 427 of 1336

4) Basic Inspection
(1) Horn operation
Listen for the horn sound when pressing the horn pad on the steering wheel. -
(2) Brake operation
Check if there is any abnormal noise, unusually long braking distance, or uneven braking force. If the
brake warning lamp does not go out even after starting the engien or are flashing during driving,
have the brake system checked immediately.
Check the brake pipes and hoses for connection, oil leak, crack or interference after changing the
position of tires. When replacing the tires, check the brake disc for surface condition and wear.
Check the parking brake cable and brake operation. Shorten the checking interval if the parking
brake is used frequently. -
-
-
(3) Exhaust system
Be aware to any changes in sound or smell from the exhaust system. These may be caused by leak or
overheat. Have the exhaust system checked and repaired immediately.
Inspect the exhaust system including catalytic converter. Inspect all the components and body frame
near the exhaust system. -
-
(4) Tires
Unusual vibration of the steering wheel and seats or pulling to one side on the straight and level roads
may indicates the uneven tire inflation pressure or poor wheel balance. -
(5) Steering and suspension system
Inspect the front and rear suspension and the steering system for damage, looseness or missing
parts, signs of wear or lack of lubrication. Inspect the power steering line and the hoses for
connection, leak, crack and chafing. Inspect the drive axle boot and seals for damage, tear or leak.
Replace or repair the system if necessary. -
(6) Engine oil
Check the oil level when the engine is still warm and add the specified engine oil if necessary. -
(7) Coolant
Check the coolant level in the coolant reservoir, coolant conditions (contamination, foreign material),
and hoses for damage and leak. Replace or add the Ssangyong genuine coolant, if needed. -
(8) Engine drive belt
Check all drive belts on the engine for wear, crack and looseness. Retighten or replace the belt, if
needed. -
Page 431 of 1336
Description Selection Coding
MIL MIL - not illuminate Select : MIL - illuminate
MIL - illuminate
Engine fan Relay Select : Relay
PWM
Air-Conditionation Not equipped Select the appropriate system
Equipped
OBD Information No MIL OBD - I Select the appropriate system
MIL treatment OBD - I
MIL treatment OBD - II
MIL treatment E - OBD
MIL treatment KOBD
Engine E20 Select : E20
E23
E28
E32
E36
Body Sedan Select : Sedan
Limousine
4. CODING
1) Variant Coding
Description Selection Coding
Unleaded/leaded Unleaded Select the appropriate system
Leaded
Cruise control No system Select the appropriate system
Cruise control
ACC
Undefined
Vehicle speed Max 180kph Selec : 190kph
190kph
200kph
210kph
Tire size 215/65R 16 Select the appropriate system
225/60R 17
225/55R 18
undefined
Page 442 of 1336
1337-04
With HPS (Hydraulic Power Steering) With ESP (Electric Power Steering)
Length of belt : 1913mm Length of belt : 1740mm
1. Crankshaft pulley
2. Air conditioner compressor
3. Water pump
4. Alternator
5. Tension pulley
6. Power steering pump pulley
7. Idler pulley
1) Drive Belt
Overview
There are two types of belt system; EPS (Electric Power Steering) and HPS (Hydraulic Power Steering).
In the vehicle with ESP, instead of power steering pulley, the idle pulley is installed on the engine.
The belt system is a single belt drive system which uses single V-belt with 6 grooves. This design
provides the long life span and minimizes the belt slip and noise.
Components
With idle pulley instead of power
steering pump pulley With power steering pump pulley
Page 472 of 1336
1740-01
1. SPECIFICATION
Unit Description Specification
Air cleaner elementFilter type Dry, filter element
Filtering area
Service intervalClean every 7,500 km
Change every 15,000 km
Air cleaner assemblyWeight 1.45 kg
Operating temperature
Capacity 7L
Shorten the service interval under severe conditions such as driving on a dusty road or offroad. *
Page 493 of 1336

1745-01
1. OVERVIEW
This system purifies the exhaust gas generated by the combustion in the engine to reduce the pollutants
and noise during that arise during combustion.
Harmful materials produced in the combustion process is treated and reduced in the exhaust system.
Harmful materials discharged from the crankcase and fuel tank is drawn into the intake system again to
reduce discharge amount of harmful materials.
Emission aftertreatment system
Catalytic Converter & O2 Sensor
The catalytic converter is a monolith type purification system composed of cordierite which purifies
exhaust gas through the small holes of active monolith catalyst from the exhaust manifold. As exhaus
t
gas passes through the small holes in the layer in the middle, its CO and HC are reduced by
oxidization reaction and its NOx is reduced by reduction reaction to Pt, Ph and Pd. The oxygen
sensor sends signals for feedback and determination of catalyst condition. For detailed description,
see the corresponding section. -
The fuel evaporative gas is a gas evaporated to the atmosphere in the section between the fuel tank and
fuel line, and its main component is hydrocarbon (HC). The fuel evaporative gas is temporarily stored in
the canister, and it is drawn to the engine through the throttle body when the purge control solenoid valve
is open according to the engine operating condition.
Gas in the combustion chamber is sealed by the piston. However, gas is leaked through the gap
between the cylinder and piston and drawn into the crankcase during the compression and explosion
strokes. This gas is blow-by gas and its main components are hydrocarbon and carbon monoxide. If this
gas is drawn into the crankcase, the system can be corroded and oil can be deteriorated. Also, if this
gas is discharged into the air, it can pollute the environment. To prevent these, the blow-by gas
reduction system (also called as crankcase ventilation system) draws the blow-by gas from the
crankcase to the combustion chamber for combustion.
Purge Canister Control
Blow-by gas control system (crankcase ventilation system)
Page 557 of 1336
1490-00
1. ENGINE DATA LIST
Data Unit Value
Coolant temperature
Intake air temperature(varies according to ambient air temperature or
engine mode)
Idle speed rpm
Engine load % 18~25%
Mass air flow kg/h 16~25kg/h
Throttle position angle
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 -