SsangYong: Engine Euro 4. Service manual - part 15

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

11

1881

FUEL SUPPLY SYSTEM

D27DTP/D27DT (EU4)  SM - 2006.08

D27DTP/D27DT (EU4)

ENGINE

FUEL

I

N

T

AKE

EXHAUST

PRE-HEA

TING

LUB

COOLING

SWITCHABLE

ECU

DIAGNOSIS

3-2. If you enter the invalid C2I or C3I value of the rel-

evant injector, the message as shown in figure ap-
pears with alarm sound.

3-1. If you press [ENTER] on C3I (C2I) display, the recoding menu of C3I or C2I appears.

C3I is coded by using alphabet letters up to Z. If you want to change a number in the coding letters, press the
number keypad of SCAN-100. If you press PgUp or PgDn key, you can enter alphabet letters again.

3-3. If you enter the valid C2I or C3I value of the relevant

injector, the message as shown in figure appears
with alarm sound.

• If you want to return to previous screen, press

 key.  You  can see the previous C2I or C3I value.

NOTE

• If you return to previous screen, press  

 key.

Then, the new C2I or C3I values are displayed.

NOTE

• The alphanumeric letters are from A ~ Z followed by 0 ~ 9.

NOTE

• When coding C2I or C3I, if you select the engine

out of the models, the injector coding items per-
taining to the engine appear.

NOTICE

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

12

1881

FUEL SUPPLY SYSTEM

D27DTP/D27DT (EU4)  SM - 2006.08

D27DTP/D27DT (EU4)

1. COMPONENTS AND OVERVIEW

The diameter of fuel supply pipe between HP pump and the common rail and the diameter of fuel pipe between the
common rail and the injector have been increased to provide the increased volume of fuel injection for the higher
output of D27DTP (POWER UP) engine.

Also, the orifice has been added to prevent the fuel pulsation in the common rail and the HP pump fuel supply line.

To control the amount of injected fuel to each cylinder precisely and evenly, it is important to prevent the fuel
pulsation occurred during the fuel supply and fuel cut.

The followings are the fuel pipes for the D27DT engine and D27DTP (POWER UP) engine:

COMMON RAIL & FUEL SUPPLY PIPE

Fuel pipe (Common rail 

→

→

→

→

→ Injector)

Fuel high pressure pipe (HP pump 

→

→

→

→

→ Common rail)

Common rail

D27DTP (POWER UP) Engine

D27DT Engine

Fuel supply pipe (Common rail 

→

→

→

→

→ Injector)

Fuel high pressure pipe (HP pump 

→

→

→

→

→ Common rail)

Common rail

Pulsation orifice

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

13

1881

FUEL SUPPLY SYSTEM

D27DTP/D27DT (EU4)  SM - 2006.08

D27DTP/D27DT (EU4)

ENGINE

FUEL

I

N

T

AKE

EXHAUST

PRE-HEA

TING

LUB

COOLING

SWITCHABLE

ECU

DIAGNOSIS

2. NEW DTCS FOR IMV (HPP: HIGH PRESSURE PUMP) CONTROL

P1260

VGT Turbo-
Charger
Actuator Circuit
Short

- Abnormal rail pressure, IMV CURRENT TRIM TOO

HIGH, DRIFT

- Check the IMV wiring harnesses.

- Check the ECU wiring harnesses.

• Check ECU’s pin A76 for open and short.

- Check the Rail pressure sensor.

• Supply voltage: 5 ± 0.1V

• Output voltage at 1600 bar: 4.055 ± 0.125V

• Output voltage at atmospheric pressure: 0.5 ±

0.04V

- Check low-pressure fuel system.

• Check fuel in fuel reservoir and air penetration.

• Check fuel filter’s specification.

- Check high-pressure fuel system.

• Check fuel rail and high-pressure pipe for leaks.

- Check IMV’s resistance (5.44 

Ω).

• If the resistance is out of specification, replace

the high-pressure pump and IMV.

Engine

Malfunction

Indicator

light

DTC

Trouble

Limp

Home

Mode

Delayed

Engine

Stop

Torque

Reduction

(max.

20%)

Help

Torque

Reduction

(max.

50%)

Immedi-

ately

Engine

Stop

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

14

1881

FUEL SUPPLY SYSTEM

D27DTP/D27DT (EU4)  SM - 2006.08

D27DTP/D27DT (EU4)

3. REMOVAL AND INSTALLATION OF COMMON RAIL AND FUEL SUP-

PLY PIPE

Ú

Ú

Ú

Ú

Ú Preceding Work: Remove the engine cover.

1. Unscrew the mounting nuts and disconnect the fuel

supply pipes.

2. Disconnect the fuel pressure sensor connector and

remove the clamps.

Tightening torque

40 ± 1.0 Nm

3. Remove the high pressure fuel pipe and unscrew the common rail mounting bolts (3EA - hexagon: 6 mm) and

remove the common rail.

• When installing, replace the fuel supply pipes with

new ones.

• Plug the fuel hole to the common rail with a pro-

tective cap.

NOTICE

High pressure

fuel pipe

Common rail

• Plug the fuel hole to the common rail with a

PROTECTIVEcap.

NOTICE

Pulsation orifice