Hyundai Santa Fe (2006 year). Manual — part 367
FL -78
FUEL SYSTEM
THROTTLE CONTROL ACTUATOR
INSPECTION
EE647E4E
FUNCTION AND OPERATION PRINCIPLE
The Throttle Control Actuator is mounted on throttle body
of diesel engine and controls throttle valve according to
PWM (Pulse With Modulation) signal from ECM.
It consists of;
-
a DC motor which actuates the throttle valve,
-
a 2-step gear (transmission ratio = 1:40) which is lo-
cated in between the DC motor and the throttle valve
and increases torque of the DC motor,
-
a position sensor which is a hall-effect sensor and
detects status of the throttle valve,
-
an electric control unit which is a micro-controller and
drives the DC motor by the PWM (Pulse With Modu-
lation) signal from the ECM,
-
and a reset spring which resets the de-energized
throttle valve to its open position.
Its function is described below:
1.
Anti-judder function: When engine is shut off, the
ECM can prevent intake air from entering to intake
manifold by fully closing the throttle valve for 1.5 sec-
onds (95% < Duty < 97%) to reduce engine vibration.
2.
Intake air control for EGR: When exhaust gas pres-
sure is equal to or lower than intake air pressure (for
example, when low engine speed), the exhaust gas
would not enter to the intake manifold. At this time,
the ECM partially closes the throttle valve (5% < Duty
< 94%) to reduce the intake air quantity. The intake
air pressure thus is lower than the exhaust gas pres-
sure.
3.
Exhaust gas temperature control for CPF regenera-
tion (Vehicle equipped with CPF System) : When the
Catalyzed Particulate Filter (CPF) is need to regener-
ate, the ECM partially closes the throttle valve (5% <
Duty < 94%) to reduce the intake air quantity. At this
time, the air-fuel ratio would become rich and the ex-
haust gas temperature would be high enough to burn
the soot inside the CPF.
Throttle Control Actuator
EFQG021A
SPECIFICATION
Duty (%)
Throttle Valve Position
5
Open
5 ~ 94
Normal operation (Partially open in
proportion to duty value)
94
Closed
94 ~ 95
Maintaining the last valid position
95 ~ 97
Fully closed
DIESEL CONTROL SYSTEM
FL -79
CIRCUIT DIAGRAM
THROTTLE CONTROL ACTUATOR
C276
1
2
ECM C230-K (90)
Feedback Signal
Actuator Control
ECM C230-K (77)
3
4
Chassis Ground
Battery Voltage
Ground
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
ECM (C230-K)
THROTTLE CONTROL
ACTUATOR(C276)
2
Chassis Ground
Main
Relay
Controller
4
1
3
M
90 - Actuator Control
77 - Feedback Signal
SCMFL6131L
SIGNAL WAVEFORM
Fig.1
Fig.2
Fig.1) Waveform of Throttle control actuator at wide open(at idle) : At IG KEY "ON", ENGINE "ON",
5% duty is outputted continuously.
Fig.2) Waveform of Throttle control actuator at closed position : At IG KEY "OFF",
93% duty is outputted for about 1 sec.
EFQG529A
FL -80
FUEL SYSTEM
VARIABLE SWIRL CONTROL
ACTUATOR
INSPECTION
EF65DC23
FUNCTION AND OPERATION PRINCIPLE
Variable Swirl Control Actuator consists of DC motor and
position sensor which detects the position of the swirl
valve.
At idle or below 3000rpm, the swirl valve is closed. This
swirl effect increases air flow rate.
Variable Swirl Control Actuater
SCMFL6104L
Low and Middle Load
High Load
Engine speed
Below 3000rpm
Above 3000rpm
Valve operation
CLOSE
OPEN
Description
illustration
KGNF302A
KGNF302B
Fail-safe
Fully opened
NOTE
To prevent the swirl valve and the shaft from being
stuck by foreign material and to learn max opening
and closing position of the valve, the ECM fully opens
and closes the valve twice when engine is being
stopped.
SPECIFICATION
Motor
Position Sensor
Items
Coil Resistance ( )
Coil Resistance ( )
3.44 ~ 5.16 [20
(68
)]
3.4 ~ 4.4 [20
(68
)]
Specification
Items
Specification
EFQG058A
DIESEL CONTROL SYSTEM
FL -81
CIRCUIT DIAGRAM
[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
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