SsangYong Rodius (2013 year). Service manual - part 59

04-4

2. INSPECTION

1) Troubleshooting

When Abnormal Noises are Heard from the Engine Room

▶

For the vehicle equipped with DI engine, if a learning noise occurs in each range or other noises 

occur, the major cause of it is a faulty turbocharger assembly. But an interference issue, poor 

tightness or loose in the intake and exhaust system also can cause those noises. This is mainly 

because the operator didn't follow the instruction exactly when reconnecting the intake hoses and 

pipes which were disconnected to check the system or replace the air cleaner. If the intake system 

is free of any faults, check the EGR and PCV oil separator connected to the intake system.

The figure may be different from the actual engine. Therefore, read thoroughly below before 

replacing the parts.

2) Abnormal Noise Caused by Poor Tightness of Intake System

When the DI engine is running, the air entered into the engine flows in the sequence as shown above. 

If high intake pressure is applied to the loose or damaged part, a whistling noise may occur, the intake 

air volume is measured incorrectly or the engine power is derated.

04-5

1719-00

3) Troubleshooting Sequence

The basic checks for intake system are as follows:

Basic Checks for Intake System

▶

Make sure to replace or clean the air cleaner 

element periodically. Otherwise, engine will be 

derated or work abnormally because of low 

intake air volume.

Unlike the fuel system, which is a closed

circuit, the intake system is an open circuit

system. Therefore any malfunction may occur 

due to dust and dirt.

Most of the connections consist of hoses so the 

system cannot withstand high temperature and 

pressure. Also it can be deformed or loosened 

easily because it is a clamp mounting system. 

Thus, when checking the engine, basic 

inspections, such as tightened status check and 

visual inspection for hose, etc., should be carried 

out in advance.

Other Checks for Intake System

▶

If the intake system is free of any faults, 

check for EGR and PCV oil separator.

04-6

1. OVERVIEW

The intake system for D20DTR engine is equipped with a 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. Because of this, the shape of the intake manifold has been changed and improved 

HFM sensor is newly adopted to control the intake air volume more precisely.

2. COMPONENT

2330-01

Intercooler assembly

2313-15

HFM sensor

HFM sensor, version 7

*For more information, refer to Chapter "Engine 

Control".

2313-01

Air cleaner assembly

04-7

1719-00

1719-01

Intake manifold

Passage for variable swirl valve and for intake 

air

1719-16

Electric throttle body

* For more information, refer to Chapter "Engine 

Control".

1719-02

Swirl control valve

Operating variably in accordance with the 

engine load and rpm.* For more information, 

refer to Chapter "Engine Control".