Hyundai: Engine D4FA. Manual — part 103
DIESEL CONTROL SYSTEM
FLA -283
DTC DETECTING CONDITION
E7840B6E
Item
Detecting Condition
Possible Cause
DTC Strategy
• Signal monitoring
Enable Conditions
• During driving
ThresholdValue
• Vehicle speed calculated by ECM is above
240Kph for more than 0.5 sec.
• When vehicle speed below 13.8Km/h is detected
for more than 1.0 sec. at above 4000RPM and
above 38.5mcc of fuel injection quantity.
DiagnosticTime
• Refer to threshold Value
Fuel Cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
MIL
NO
• Clutch error monitoring
inhibited
• Cruise control deactivated
(for Cruise control option
applied vehicle)
• Idle correction deactivated
at low battery voltage
• Vehicle speed sensor circuit
• Vehicle speed sensor
component
SPECIFICATION
EF343697
Sensing Type
LOW Signal Voltage
HIGH Signal Voltage
Signal Duty
M/T : Hall sensor typeA/T
: driven by TCM
below 1.5V
above 3.5V
50±5%
FLA -284
FUEL SYSTEM
SCHEMATIC DIAGRAM
EFE1C228
1
1
2
2
3
3
G102 ground point
IG Power
Chassis Ground
VSS signal
I/P-E terminal 4
C101-2 terminal 75
IG Power (10A TCU FUSE)
C101-2 ECM
C101-2 ECM
C122 Vehicle Speed Sensor
49
EC103 terminal 75
VSS signal
[M/T]
[A/T]
75. VSS control
H
Cluster
BCM
Data Link Connector
A/C control module
Cluster
BCM
Data Link Connector
A/C control module
INPUT Speed sensor
E152 TCM
VSS 53
signal output
75.
VSS signal
OUTPUT Speed sensor
E152 TCM
4
5
24
23
21 22
20
19
62
61
60
59
58
81
80
79
78
77
76
5455
53
52
51
4950
48
47
56 57
1718
16
15
1314
12
11
10
9
8
7
6
43
42
40 41
39
38
36 37
35
34
32 33
31
30
29
28
27
26
25
46
45
44
7374
72
71
70
6869
67
66
75
65
64
63
1
2
3
3
2
1
C122 Vehicle Speed Sensor
C122 Vehicle Speed Sensor
E152 TCM
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
[CIRCUIT DIAGRAM]
[HARNESS CONNECTOR]
[CONNECTOR INFORMATION]
Terminal
Terminal
Connected to
Function
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
EGNG011S
DIESEL CONTROL SYSTEM
FLA -285
SIGNAL WAVEFORM AND DATA
EC8E8045
Fig.1) This is the signal waveform of vehicle speed sensor. Digital waveform, LOW 0.8V, HIGH : 10V with 50% duty is outputted.
ECM detects vehicle speed, sensing this ON-OFF period (Hz).
Fig.1
EGNG011T
MONITOR SCANTOOL DATA
E2170DF0
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 "VEHICLE SPEED SENSOR " parameter on the Scantool.
specification : current vehicle speed is displayed.
Fig.1) Check if current vehicle speed is same as vehicle speed displayed on the Scantool.
Fig.1
EGNG011U
TERMINAL AND CONNECTOR INSPECTION
E049174F
1.
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various prob-
lems and damge of component.
FLA -286
FUEL SYSTEM
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 for
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
▶ with M/T : Go to "Power Circuit Inspection".
▶ with A/T : Go to "Signal Circuit Inspection".
POWER CIRCUIT INSPECTION
ECFEEB93
1.
Check power circuit voltage
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Vehicle Speed Sensor connector.
3)
IG KEY "ON".
4)
Measure the voltage of VSS connector terminal 2.
Specification : 11.5V~13.0V
5)
Is the measured voltage within the specification?
YES
▶ Go to "Signal Circuit Inspection".
NO
▶ Repair In-pannel junction box 10A ECU fuse and related circuit, and related circuit and go to "Verification of
Vehicle Repair".
SIGNAL CIRCUIT INSPECTION
E87344B4
[ WITH M/T ]
1.
Check signal circuit voltage at sensor side
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect VSS connector.
3)
IG KEY "ON".
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