Hyundai Santa Fe (2006 year). Manual - part 463

FL -462

FUEL SYSTEM

DTC DETECTING CONDITION

E5E34C80

Item

Detecting Condition

Possible Cause

DTC Strategy

• Voltage monitoring

Enable Conditions

• Engine running

Threshold Value

• (Case 1) VSCA real value is higher than VSCA

target value by more than 5%.

• (Case 2) VSCA real value is lower than VSCA

target value by more than 7%.

• (Case 3) Variable swirl valve operating motor is

mechanically stuck during operation

• (Case 4) Variable swirl valve operating motor is

mechanically stuck during learning ’closing’ process.

Diagnostic Time

• (Case 1,2,3) 1 sec.
• (Case 4) 3 sec.

Fuel cut

NO

EGR Off

(Case1,2)

:

NO

(Case3,4)

:

YES

Fuel Limit

NO

Fail Safe

Check

Lamp

NO

• Swirl valve opened at

variable swirl control
actuator failure

• Variable swirl valve

shaft stuck

• Variable swirl valve link

device problem

• Variable swirl valve position

sensor component

SPECIFICATION

E5DFC840

Variable swirl control actuator characteristic curve

Degree

[ ]

Duty [%]

LFIG510A

DTC TROUBLESHOOTING PROCEDURES

FL -463

SCHEMATIC DIAGRAM

E89AC280

[CIRCUIT DIAGRAM]

[HARNESS CONNECTORS]

[CONNECTION INFORMATION]

VARIABLE SWIRL CONTROL ACTUATOR

C269

Terminal

Connected to

Function

VARIABLE SWIRL
CONTROL ACTUATOR (C269)

3

2

ECM C230-A (30)

Reference Voltage (+5V)

Motor [-] Control

1

ECM C230-A (60)

Motor [+] Control

ECM C230-A (26)

ECM (C230-A)

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

5

Sensor Ground

ECM C230-A (6)

4

ECM C230-A (56)

Position Signal

1

2

3

4

5

5

4

3

  

SENSOR

MOTOR

26 - Reference Voltage (+5V)

56 - Position Sensor Signal

6 - GND

1

2

30 - Motor [-] Control

60 - Motor [+] Control

M

SCMFL6132L

FL -464

FUEL SYSTEM

SIGNAL WAVEFORM AND DATA

EE057353

Fig.1

Fig.2

Fig.1) Waveform when variable swirl valve closed at idle. Terminal 1 is (+) and 2 is (-).
Fig. 2)  Waveform when variable swirl valve opened at above 3000RPM. Terminal 1 is (-) and 2 is (+).
Fig. 3) Waveform of variable swirl control actuator motor position sensor at the point of turning engine OFF. 
           4.3V at swirl valve closed and 0.3V at swirl valve opened. Swirl valve is opened and closed twice at engine "OFF".
           (Measured at terminal 4)

Fig.3

Swirl valve fully closed

Swirl valve fully opened

SCMFL6421L

COMPONENT INSPECTION

E52F7BF8

1.

Check variable swirl control actuator link device operation

1)

IG KEY "OFF", ENGINE "OFF"

2)

Wait for approx. 16 sec. and check that Main relay turns "OFF".

3)

Disconnect variable swirl control actuator connector.

4)

Pressing variable swirl control actuator link with hands, check if shaft stuck, tightness or problem of link device
is detected.

Specification : variable swirl control actuator link device should move smoothly.

5)

Does variable swirl control actuator move slowly?

DTC TROUBLESHOOTING PROCEDURES

FL -465

YES

▶

Go to "2. Check motor coil resistance".

NO

▶

Replace stuck or too tight parts of component(intake manifold assy’ or swirl actuator) and go to "Verification

of Vehicle Repair".

2.

Check motor coil resistance

1)

IG KEY "OFF", ENGINE "OFF"

2)

Disconnect variable swirl control actuator.

3)

Measure the resistance between variable swirl control actuator component terminal 1 and 2.

Specification : 15.0 ± 3

Ω

(20

℃

)

5

4

3

2

1

3. VSCA position Sensor power 
4. VSCA position Sensor signal
5. VSCA position Sensor ground

SCMFL6394L

4)

Is the measured resistance within the specification?

YES

▶

Go to "3. Check variable swirl control actuator position sensor resistance".

NO

▶

Replace variable swirl control actuator and go to "Verification of Vehicle Repair".

3.

Check variable swirl control actuator position sensor resistance

1)

IG KEY "OFF", ENGINE "OFF"

2)

Disconnect variable swirl control actuator.

3)

Measure the resistance of variable swirl control actuator component terminal 3,4,5 referring "Terminal resistance
table" as follows.