SsangYong Korando III (2010 year). Manual - part 333

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ENGINE CONTROL 

SYSTEM

Engine ECU (D20DTF)

1. OVERVIEW

The components in the fuel system supply fuel and generate high pressure to inject fuel to each injector. 

They are controlled by the engine ECU. 

The common rail fuel injection system consists of fuel tank, fuel line, low pressure line which supplies low 

pressure fuel to the low pressure pump (includes high pressure pump), high pressure line which 

connected to the injector and the engine control unit (ECU) which calculates the accelerator pedal 

position and controls the overall performance of vehicle based on the input signals from various sensors.

HP fuel pump

Common rail and 

Injector

Fuel filter

(Priming pump)

Fuel supply tube

Fuel return tube

Fuel tank

Fuel neck

Fuel sender (main)

Fuel sender (sub)

Low pressure line

High pressure line

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Fuel rail assembly

Relieves the pulsation.
Measures the fuel pressure.
Distributes the fuel to injectors.

Camshaft position sensor

Determines the injection order.

Injector (C3I)

Pre-injection, main injection, after-injection by 
signals from ECU

Fuel tank

Fuel metering by dual sender. Supply the fuel in 
main fuel tank and sub fuel tank through fuel 
inlet tube

2. SYSTEM LAYOUT AND OPERATION

1) Layout

Fuel supply line

Fuel return line

For sensor and actuator control logic, 

refer to Chapter "ENGINE CONTROL".

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0000-00

Crankshaft position sensor

Measuring engine rpm

T-MAP sensor

Measuring booster pressure 
and temperature

HFM

Measuring intake air mass and 
temperature

Engine ECU (D20DTF)

Engine control by various 
signals

High pressure pump

Generates the high pressurized fuel 
and supply it.

Plunger type HP pump (1,800 

bar)

Vane type transfer pump (6bar)

Accelerator pedal 

position sensor

Detects driver's intention for 
speed up/down

Fuel filter assembly

Supply clean fuel/fuel 
heating/water separation by 
priming pump