Hyundai: Engine D4FA. Manual - part 106

DIESEL CONTROL SYSTEM

FLA -295

SPECIFICATION :

Brake Pedal Released

Brake Pedal Depressed

Switch 1

Switch 2

Switch 1

Switch 2

Discontinuity

Continuity

Continuity

Discontinuity

1

2

3

4

1

2

3

4

EGNG004B

5.

Does brake switch operate correctly?

YES

▶ Go to "Verification of Vehicle Repair".

NO

▶ Unless any problem is detected after checking height of brake pedal, replace brake switch component and go to
"Verification of Vehicle Repair".

VERIFICATION OF VEHICLE REPAIR

EF1AB3C2

After a repair, it is essential to verify that the fault is corrected.

1.

After connecting Scantool select "DIAGNOSTIC TROUBLE CODES(DTCs)" mode.

2.

Clear recorded DTC using Scantool.

3.

Drive the vehicle within DTC "Enable conditions" in "General information".

4.

After selecting "DIAGNOSTIC TROUBLE CODES(DTCs)" mode and check if DTC is recorded again.

5.

Are any DTCs recorded ?

YES

▶ Go to the DTC guide of recorded NO. in Scantool.

NO

▶ System operates within specification.

FLA -296

FUEL SYSTEM

DTC P0532 A/C REFRIGERANT PRESSURE SENSOR "A" CIRCUIT LOW
INPUT

COMPONENT LOCATION

EBC60CBF

A/C Pressure sensor

EGNG014T

GENERAL DESCRIPTION

E45AB0FB

A/C pressure transducer consists of piezoelectric element and it detects aircon refrigerant pressure. Piezoeletric type is
more advantageous to obtain linear data of pressure than existing switch type. Thus, optimum control of aircon compres-
sor and fan is realized and improved fuel efficiency follows with it.

DTC DESCRIPTION

EB007F4D

P0532 is set when the voltage below 0.3V - minimum voltage of A/C pressure transducer signal - is detected for more
than 0.6 sec.. This code is due to open in power circuit or short to ground in signal circuit of A/C pressure transducer.

DTC DETECTING CONDITION

EB7F93DB

Item

Detecting Condition

Possible Cause

DTC Strategy

• Voltage monitoring

Enable Conditions

• Engine run

ThresholdValue

• When output voltage is below the minimum

value (below 300mV)

DiagnosticTime

• 600ms

Fuel Cut

NO

EGR Off

NO

Fuel Limit

NO

Fail Safe

MIL

NO

• A/C pressure transducer

circuit

• A/C pressure transducer

component

DIESEL CONTROL SYSTEM

FLA -297

SPECIFICATION

E3F71BFD

abnormal low
pressure range

normal
pressure range

abnormal high
pressure range

Sensor output characteristic

Max voltage

Min voltage

0.0 Kg/

32.0 Kg/

EGNG001Q

SCHEMATIC DIAGRAM

E00BBD4F

1

3

2

2

3

1

C101-2 terminal 12

Sensor signal

Sensor ground

Sensor power

C101-2 terminal 13

C101-2 terminal 22

13. Sensor signal

22. Sensor power

12. Sensor ground

C101-2 ECM

E08 A/C pressure transducer

P

E08 A/C pressure transducer

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

1

2

3

[CIRCUIT DIAGRAM]

[HARNESS CONNECTOR]

[CONNECTOR INFORMATION]

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

EGNG001R

FLA -298

FUEL SYSTEM

SIGNAL WAVEFORM AND DATA

E21FF245

A/C "ON"

A/C "OFF"

Fig.1) Waveform of A/C pressure transducer in accordance with aircon operation.(aircon compressor operation)

Fig.1

EGNG001S

NOTE

Output signal(voltage) changes in accordance with the amount of refrigerant and the change of weather. Check if
normal pressure change occurs in accordance with aircon compressor operation at normal pressure range shown in
"Specification".

MONITOR SCANTOOL DATA

E52EBD84

1.

Connect scantool to Data Link Cable (DLC).

2.

Warm engine up to normal operating temperature.

3.

Turn "OFF" electrical devices and A/C.

4.

Monitor "A/C PRESSURE SENSOR" parameter on the scantool.

Specification : A/C "OFF" : 1200mV~1500mV
A/C " ON" : 1500mV~ 2400mV