Hyundai Santa Fe (2006 year). Manual - part 376

FL -114

FUEL SYSTEM

SPECIFICATION

E418C5A6

rail pressure regulator valve resistance

Operating frequancy

3.42 ~ 3.78

Ω

(20

℃

)

1000Hz(1KHz)

SCHEMATIC DIAGRAM

E3F48E07

RAIL PRESSURE REGULATOR VALVE

C277

1

2

ECM C230-A (34)

Battery Voltage (B+)

Valve Control

ECM C230-A (4)

[CIRCUIT DIAGRAM]

[HARNESS CONNECTORS]

[CONNECTION INFORMATION]

Terminal

Connected to

Function

ECM

C230-A

C230-K

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

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

2

1

34 - Valve Control

4 - Power Supply

ECM (C230-A)

RAIL PRESSURE 
REGULATOR VALVE(C277)

2

1

SCMFL6129L

DTC TROUBLESHOOTING PROCEDURES

FL -115

SIGNAL WAVEFORM AND DATA

E3734DDA

Fig.1

Fig.2

Fig.1) Waveform of rail pressure regulator valve at idle. It shows approx. 17% duty( (-) duty ).
Fig.2) Waveform of rail pressure regulator valve as accelerating. Approx. 50% duty is outputted as engine load increases.
         ( When rail pressure increases as accelerating, rail pressure regulator valve duty(current) rises.)          

LFIG377A

MONITOR SCANTOOL DATA

E1D0E757

1.

Connect Scantool to Data Link Connector (DLC).

2.

Warm engine up to normal operating temperature.

3.

Turn "OFF" electrical devices and A/C.

4.

Monitor "FUEL PRESSURE MEASURED", "INJ. PUMP REGULATOR","RAIL PRESS. REGULATOR1" parameter on
the Scantool.

SPECIFICATION :

Idle(without load)

Accelerating(stall test)

Diagnosis

FUEL PRESSURE

MEASURED

27 ± 5 Mpa

above 75 Mpa

press. increases

INJ. PUMP REGULATOR

34 ± 3%

38 ± 3%

duty increases

RAIL PRESS.

REGULATOR1

16 ± 3%

45 ± 3%

duty increases

FL -116

FUEL SYSTEM

Fig.1

Fig.2

Fig.2) Fuel pressure and Fuel pressure regulator valve data at idle.
Fig.3) Fuel pressure and Rail pressure regulator valve data at idle.
Fig.4) Fuel pressure and Fuel pressure regulator valve data at acceleration.
Fig.5) Fuel pressure and Rail pressure regulator valve data at acceleration.

Fig.3

Fig.4

LFIG375A

NOTE

The waveform of fuel pressure regulator valve installed at high pressure pump(fuel detecting MPROP) shows 34 ±
3% duty at idle, duty rises to approx. 38% at acceleration to raise rail pressure.

The waveform of rail pressure regulator valve installed at common rail shows 16 ± 3% duty at idle, duty rises to
approx. 45% at acceleration to raise rail pressure.

TERMINAL AND CONNECTOR INSPECTION

E9CA1686

1.

Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various prob-
lems and damge of component.

2.

Perform checking procedure as follows.

1)

Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.

2)

Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking
device and

DTC TROUBLESHOOTING PROCEDURES

FL -117

NOTE

Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for
checking connecting condition. ( after checking, reconnect the pin at correct position. )

3.

Is the problem found?

YES

▶

Repair the trouble causing part and go to "Verification of Vehicle Repair".

NO

▶

Go to "Power Circuit Inspection".

POWER CIRCUIT INSPECTION

E872E161

1.

Check power circuit voltage

1)

IG KEY "OFF", ENGINE "OFF"

2)

Disconnect RPRV connector.

3)

IG KEY "ON"

4)

Measure the voltage of RPRV connector terminal 1.

specification : 11.5V~13.0V

5)

Is the measured voltage within the specification?

YES

▶

Go to "Control Circuit Inspection".

NO

▶

Repair open between rail pressure regulator valve connector terminal 1 and ECM connector(C230-A) terminal

4

CONTROL CIRCUIT INSPECTION

E6847DBA

1.

Check monitoring voltage in control circuit

1)

IG KEY "OFF", ENGINE "OFF"

2)

Disconnect RPRV connector.

3)

IG KEY "ON"

4)

Measure the voltage of RPRV connector terminal 2.

specification : 3.2V~3.7V

5)

Is the measured voltage within the specification?