Hyundai Santa Fe (2006 year). Manual — part 366
FL -74
FUEL SYSTEM
RAIL PRESSURE REGULATOR
VALVE
INSPECTION
EE7E3738
FUNCTION AND OPERATION PRINCIPLE
The Fuel Pressure Regulator Valve and the Rail Pressure
Regulator Valve are installed on high pressure pump and
common rail respectively. These valves control fuel inlet
(feed) from fuel tank via fuel filter and outlet (return) to fuel
tank of high pressure fuel circuit.
This system is called "Dual Fuel Pressure Control System"
and can precisely and quickly control the fuel pressure in
accordance with various engine conditions by controlling
the fuel inlet and outlet simultaneously.
Fuel Pressure
Regulator Valve
Rail Pressure Regulator Valve
EFQG114A
SPECIFICATION
Items
Specification
Coil Resistance (
Ω
)
3.42 ~ 3.78
Ω
[20
℃
(68
℉
)]
DIESEL CONTROL SYSTEM
FL -75
CIRCUIT DIAGRAM
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
SIGNAL WAVEFORM
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.)
EFQG377A
COMPONENT INSPECTION
1.
Turn ignition switch OFF.
2.
Disconnect the rail pressure regulator valve connec-
tor.
3.
Measure resistance between terminal 1 and 2 of the
valve.
Specification: Refer to "SPECIFICATION".
FL -76
FUEL SYSTEM
ELECTRIC EGR CONTROL VALVE
INSPECTION
E0CD3D42
FUNCTION AND OPERATION PRINCIPLE
The Exhaust Gas Recirculation (EGR) system is used
to add the exhaust gas to intake air in order to reduce
an excess of air and the temperature in the combustion
chamber. The Electric EGR control valve is controlled by
ECM
’
s duty control signal depending on engine load
and the need of intake air and is operated by solenoid
valve not vacuum valve.
EEGR
SCMFL6006D
SPECIFICATION
Items
Specification
Coil Resistance (
Ω
)
7.3 ~ 8.3
Ω
[20
℃
(68
℉
)]
CIRCUIT DIAGRAM
EEGR
C231
2
1
ECM C230-A (59)
Battery Voltage (B+)
EEGR Control
Main Relay
[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
1
2
59 - EEGR Control
ECM (C230-A)
EEGR(C231)
1
2
Main Relay
SCMFL6130L
DIESEL CONTROL SYSTEM
FL -77
SIGNAL WAVEFORM
Fig.1
Fig.2
Fig.1) Approx. 10% duty( (-)duty ) signal waveform of EEGR actuator (with EEGR valve closed)
Fig.2) Approx. 40% duty( (-)duty ) signal waveform of EEGR actuator(with EEGR valve opened)
EFQG414A
COMPONENT INSPECTION
1.
Turn ignition switch OFF.
2.
Disconnect the electric EGR control valve connector.
3.
Measure resistance between terminal 1 and 2 of the
valve.
Specification: Refer to "SPECIFICATION".
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