Hyundai: Engine D4FA. Manual — part 78
DIESEL CONTROL SYSTEM
FLA -183
DTC P0182 FUEL TEMPERATURE SENSOR A CIRCUIT LOW INPUT
COMPONENT LOCATION
EEDAE31D
FTS
EGNG006H
GENERAL DESCRIPTION
E710D5AF
Fuel Temperature Sensor is NTC thermistor installed in fuel supplying line. It senses the temperature of fuel supplied
to high pressure pump.Fuel temperature is limited (engine power is limited) to keep fuel temperature from reaching at
120℃.This limit is to protect fuel line such as high pressure pump and injectors from damages due to rapid deterioration
by vapor-lock phenomenon which can occur at high temperature or destruction of oil membrane.
DTC DESCRIPTION
E490E388
P0183 is set when the voltage below 53mV(0.053V) - minimum voltage of FTS output - is detected for more than 2.0 sec..
This code is due to short to ground in FTS signal circuit.
DTC DETECTING CONDITION
EC3013F3
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage Monitoring
Enable Conditions
• IG KEY "ON"
ThresholdValue
• When output signal is below the minimum
value.(below 53mV)
DiagnosticTime
• 2.0sec.
Fuel Cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
MIL
NO
• FTS circuit
• FTS component
FLA -184
FUEL SYSTEM
SPECIFICATION
EE9A5359
Temperature
-30℃
-20℃
-10℃
0℃
20℃
Resistance
22.22~31.78㏀
13.24~18.10㏀
8.16~10.74㏀
5.18~6.60㏀
2.27~2.73㏀
Temperature
40℃
50℃
60℃
70℃
Resistance
1.059~1.281㏀
0.748~0.904㏀
0.538~0.650㏀
0.392~0.476㏀
SCHEMATIC DIAGRAM
EDECB04E
C138 Fuel temperature sensor
1
1
2
2
C101-2 terminal 10
Ground
Signal
C101-2 terminal 11
10. Ground
11. Signal
C101-2 ECM
C138 Fuel temperature sensor
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
[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
EGNG006I
SIGNAL WAVEFORM AND DATA
E7970DC0
Fig.1
Fig.1) FTS output signal at 50
.The higher temperature rises, the lower signal voltage becomes.
EGNG006J
DIESEL CONTROL SYSTEM
FLA -185
MONITOR SCANTOOL DATA
E41BFF19
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 "FUEL TEMPERATURE" parameter on the scantool.
Specification :Fuel temperature is displayed
Fig.1
Fig.1) Check if too high or low temperature is displayed.(too high or low temperature is abnormal value.)
EGNG006K
TERMINAL AND CONNECTOR INSPECTION
EA1C5C1A
1.
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various prob-
lems and damge of component.
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 or
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
▶ Go to "Signal Circuit Inspection ".
FLA -186
FUEL SYSTEM
SIGNAL CIRCUIT INSPECTION
E668148B
1.
Check signal circuit voltage
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect FTS connector.
3)
IG KEY "ON".
4)
Measure the voltage of terminal 2 of FTS connector.
Specification : 4.8V~5.1V
5)
Is the measured voltage within the specification?
YES
▶ Go to "Component Inspection".
NO
▶ Go to "2.Check short to ground in signal circuit" as follows.
2.
Check short to ground in signal circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect FTS connector and ECM connector.
3)
Check continuity between FTS connector terminal 2 and chassis ground.
Specification : Discontinuity ( Infinite Ω )
4)
Is the measured resistance within the specification?
YES
▶ Go to "Component Inspection".
NO
▶ Repair short to ground in signal circuit and go to "Verification of Vehicle Repair".
COMPONENT INSPECTION
EFD4A86B
1.
IG KEY "OFF", ENGINE "OFF".
2.
Disconnect FTS connector.
3.
Measure resistance of FTS component terminal 1 and 2, referring to resistance characteristic table of specification
of General information.
Specification : Refer to Specification of General Information.
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