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
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