Hyundai: Engine D4FA. Manual - part 83

DIESEL CONTROL SYSTEM

FLA -203

5)

Are the problems relevant to RPS found?

YES

▶ Replace RPS if necessary and go to "Verification of Vehicle Repair".

NO

▶ Go to "RPS waveform Inspection".

2.

RPS Waveform Inspection

1)

IG KEY "OFF", ENGINE "OFF".

2)

Connect RPS connector.

3)

Connect an Oscilloscope to RPS connector terminal 2.

4)

After turning engine "ON", Check waveform at idle and during acceleration.

Specification : Refer to "Signal Waveform ＆ Data" of "General Information".

5)

Does RPS waveform look similar to standard "Signal Waveform & Data"?

YES

▶ Go to "Verification of Vehicle Repair".

NO

▶ Replace RPS and go to "Verification of Vehicle Repair".

VERIFICATION OF VEHICLE REPAIR

EB9C8E01

Refer to DTC P0192.

FLA -204

FUEL SYSTEM

DTC P0201 CYLINDER 1-INJECTOR CIRCUIT/OPEN
DTC P0202 CYLINDER 2-INJECTOR CIRCUIT/OPEN
DTC P0203 CYLINDER 3-INJECTOR CIRCUIT/OPEN
DTC P0204 CYLINDER 4-INJECTOR CIRCUIT/OPEN

COMPONENT LOCATION

E8EF3F9E

EGNG008C

GENERAL DESCRIPTION

EE11035A

Injectors spray fuel in the highly compressed combustion chamber, and power generates through combustion process.Fuel
pressure is raised to 1600bar in common rail diesel engine for the purpose of making fuel into minute particles. And fuel
devided into minute particles leads smoke reduction, high power generation, and improved fuel efficiency. To control
pressure of 1600bar with solenoid, oil pressure surbo is applied. And injector solenoids is actuated by solenoid oper-
ating voltage raised to 80V with the method of current control. Niddle valve inside of injector is located between A and
B chamber. If applied pressure to B chamber is relived by injector solenoid, niddle valve is raised by the pressure of A
chamber then, fuel is injected. If same pressure is applied to A and B chamber, niddle valve closes by the elasticity then,
fuel injection stops.As electronically controlled injector is applied instead of mechanical injector, pilot and post injection,
injeciton duration and quantity control are achieved. And engine performance is improved by these control.

 

ChamberB

ChamberA

niddle

spring

solenoid

B chamber press. 

Released

(injection performed)

B chamber press. 

loaded

(injection disabled)

returning fuel

EGNG008D

DIESEL CONTROL SYSTEM

FLA -205

DTC DESCRIPTION

EF12DD9C

P0201 is set when no current is detected in injector power and control circuit at injector #1 operating condition. This code
is due to open in injector circuit or open in injector component coil.

DTC DETECTING CONDITION

E6B8289E

Item

Detecting Condition

Possible Cause

DTC Strategy

• Current monitoring

Enable Conditions

• IG KEY "ON"

ThresholdValue

• Open in injector circuit

DiagnosticTime

• Immediately

Fuel Cut

NO

EGR Off

NO

Fuel Limit

YES

Fail Safe

MIL

YES

• Open in injector circuit
• Injector component

SPECIFICATION

ED33C1AC

Injector Component

Resistance

Injector Operating Voltage

Injector Operating

Current

Injector Control Type

0.255Ω ±0.04 (20℃).

80V

Peak current : 18±1A

Hold in current : 12±1A

Recharging current : 7A

Current control

FLA -206

FUEL SYSTEM

SCHEMATIC DIAGRAM

EB6BF894

1

1

1

1

1

2

2

2

2

2

C101-1 terminal 16

Injector #1 Low side 

Injector #1 High side

C101-1 terminal 47

16. Injector #1 Low side

33. Injector #4 High side

47. Injector #1 High side

31. Injector #2 High side

46. Injector #3 High side

17. Injector #4 Low side

1. Injector #3 Low side

2. Injector #2 Low side

C101-1 ECM

C113-4 Injector #4

[C113-1 Injector #1]

1

2

C101-1 terminal 2

Injector #2 Low side

Injector #2 High side

C101-1 terminal 31

[C113-2 Injector #2]

1

2

C101-1 terminal 1

Injector #3 Low side

Injector #3 High side

C101-1 terminal 46

[C113-3 Injector #3]

1

2

C101-1 terminal 17

Injector #4 Low side

Injector #4 High side

C101-1 terminal 33

[C113-4 Injector #4]

C113-3 Injector #3

C113-2 njector #2

C113-1 Injector #1

1

2

C113-1 

Injector 

#1

1

2

C113-2 

Injector 

#2

1

2

C113-3 

Injector 

#3

1

2

C113-4 

Injector 

#4

C101-2 ECM

C101-1 ECM

1

30 29

31

32

38

39

36

37

35

33

34

40

42 41

46 45 44 43

48 47

50 49

2

3

4

6

5

8

7

12 11 10 9

13

14

15

18 17

19

16

22

25

27 26

23

20

21

24

28

51

75 74
53 52

73

79 78 77 76

80

81

83 82

84

86 85

87

89 88

90

92 91

93

94

57

69 68

70

71

64

54

55

56

61

58

59

60

63 62

65

66

67

72

[CIRCUIT DIAGRAM]

[HARNESS CONNECTOR]

[CONNECTOR INFORMATION]

Terminal

Terminal

Connected to

Connected to

Function

Terminal

Terminal

Connected to

Connected to

Function

Terminal

Terminal

Connected to

Connected to

Function

Terminal

Terminal

Connected to

Connected to

Function

1

2

4

3

6

5

8 7

12

13

16

17

18

23 22

20

21

19

27 26 25 24

28

29

30

14

9

10

11

15

33 32 31

34

37

41

42

40 39 38

35

36

43

44

47 46

49 48

50

53

56

58 57

54

51

52

55

59

60
45

EGNG008E