Hyundai: Engine D4FA. Manual - part 103

DIESEL CONTROL SYSTEM

FLA -283

DTC DETECTING CONDITION

E7840B6E

Item

Detecting Condition

Possible Cause

DTC Strategy

• Signal monitoring

Enable Conditions

• During driving

ThresholdValue

• Vehicle speed calculated by ECM is above

240Kph for more than 0.5 sec.

• When vehicle speed below 13.8Km/h is detected

for more than 1.0 sec. at above 4000RPM and
above 38.5mcc of fuel injection quantity.

DiagnosticTime

• Refer to threshold Value

Fuel Cut

NO

EGR Off

NO

Fuel Limit

NO

Fail Safe

MIL

NO

• Clutch error monitoring

inhibited

• Cruise control deactivated

(for Cruise control option
applied vehicle)

• Idle correction deactivated

at low battery voltage

• Vehicle speed sensor circuit
• Vehicle speed sensor

component

SPECIFICATION

EF343697

Sensing Type

LOW Signal Voltage

HIGH Signal Voltage

Signal Duty

M/T : Hall sensor typeA/T

: driven by TCM

below 1.5V

above 3.5V

50±5%

FLA -284

FUEL SYSTEM

SCHEMATIC DIAGRAM

EFE1C228

1

1

2

2

3

3

G102 ground point

IG Power

Chassis Ground

VSS signal

I/P-E terminal 4

C101-2 terminal 75

IG Power (10A TCU FUSE)

C101-2 ECM

C101-2 ECM

C122 Vehicle Speed Sensor

49

EC103 terminal 75

VSS signal

[M/T]

[A/T]

75. VSS control

H

Cluster
BCM
Data Link Connector
A/C control module

Cluster
BCM
Data Link Connector
A/C control module

INPUT Speed sensor

E152 TCM

VSS 53

signal output     

75.

VSS signal

OUTPUT Speed sensor

E152 TCM

4

5

24

23

21 22

20

19

62

61

60

59

58

81

80

79

78

77

76

5455

53

52

51

4950

48

47

56 57

1718

16

15

1314

12

11

10

9

8

7

6

43

42

40 41

39

38

36 37

35

34

32 33

31

30

29

28

27

26

25

46

45

44

7374

72

71

70

6869

67

66

75

65

64

63

1

2

3

3

2

1

C122 Vehicle Speed Sensor

C122 Vehicle Speed Sensor

E152 TCM

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

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

EGNG011S

DIESEL CONTROL SYSTEM

FLA -285

SIGNAL WAVEFORM AND DATA

EC8E8045

Fig.1) This is the signal waveform of vehicle speed sensor. Digital waveform,  LOW 0.8V,  HIGH : 10V with 50% duty is outputted.  
          ECM detects vehicle speed, sensing  this  ON-OFF period (Hz).

Fig.1

EGNG011T

MONITOR SCANTOOL DATA

E2170DF0

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 "VEHICLE SPEED SENSOR " parameter on the Scantool.

specification : current vehicle speed is displayed.

Fig.1) Check if current vehicle speed is same as vehicle speed displayed on the Scantool.

Fig.1

EGNG011U

TERMINAL AND CONNECTOR INSPECTION

E049174F

1.

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

FLA -286

FUEL SYSTEM

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 connecting condition between terminal and wiring.

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

▶ with M/T : Go to "Power Circuit Inspection".
▶ with A/T : Go to "Signal Circuit Inspection".

POWER CIRCUIT INSPECTION

ECFEEB93

1.

Check power circuit voltage

1)

IG KEY "OFF", ENGINE "OFF".

2)

Disconnect Vehicle Speed Sensor connector.

3)

IG KEY "ON".

4)

Measure the voltage of VSS connector terminal 2.

Specification : 11.5V~13.0V

5)

Is the measured voltage within the specification?

YES

▶ Go to "Signal Circuit Inspection".

NO

▶ Repair In-pannel junction box 10A ECU fuse and related circuit, and related circuit and go to "Verification of
Vehicle Repair".

SIGNAL CIRCUIT INSPECTION

E87344B4

[ WITH M/T ]

1.

Check signal circuit voltage at sensor side

1)

IG KEY "OFF", ENGINE "OFF".

2)

Disconnect VSS connector.

3)

IG KEY "ON".