Hyundai: Engine D4FA. Manual — part 156
DIESEL CONTROL SYSTEM
FLA -495
3)
Check continuity between Lambda sensor connector terminal 6 and ECM connector terminal 65.
Specification : Continuity (below 1.0Ω )
4)
Is the measured resistance within the specification?
YES
▶ Repair short to ground in Lambda sensor pump circuit and go to "Verification of Vehicle Repair".
NO
▶ Repair open in Lambda sensor pump circuit and go to "Verification of Vehicle Repair".
GROUND CIRCUIT INSPECTION
EFBBCBA8
1.
Check voltage in sensor ground circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Lambda sensor connector.
3)
IG KEY "ON".
4)
Measure the voltage of OLambda sensor connector terminal 3.
Specification : 2.3V~2.7V
5)
Is the measured voltage within the specification?
YES
▶ Go to"Component Inspection".
NO
▶ No voltage detected in Lambda sensor ground circuit : Go to "2. Check open in sensor ground circuit" as
follows.
▶ High voltage detected in Lambda sensor ground circuit : Repair short to battery in Lambda sensor ground
circuit and go to "Verification of Vehicle Repair".
2.
Check open in sensor ground circuit
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Lambda sensor connector and ECM connector.
3)
Check continuity between Lambda sensor connector terminal 3 and ECM connector terminal 86.
Specification : Continuity (below 1.0Ω )
4)
Is the measured resistance within the specification?
YES
▶ Repair short to ground in Lambda sensor ground circuit and go to "Verification of Vehicle Repair".
FLA -496
FUEL SYSTEM
NO
▶ Repair open in Lambda sensor ground circuit and go to "Verification of Vehicle Repair".
COMPONENT INSPECTION
EEBA7EE5
1.
Lambda sensor Visual Inspection
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect Lambda sensor connector.
3)
Perform visual inspection for each checking point as follows.
a.
Check corrosion inside of Lambda sensor terminal.
b.
Check damaged coverring and open in component wiring.
c.
Check connecting torque(poor connection) of Lambda sensor component.
d.
Disconnect Lambda sensor and check deformation, clogging, melting of Lambda detecting prove.
Specification : Everyting OK
4)
Is any problem of Lambda sensor detected?
YES
▶ Replace Lambda sensor and go to "Verification of Vehicle Repair".
NO
▶ Refer to "NOTE" as follows.
NOTE
In diesel engine, ultra lean combustion generates at normal operating condition. Therefore, Lambda sensor sig-
nal change in accordance with engine acceleration and various loading condition rarely happens, unlikely to linear
Lambda sensor of gasoline engine. Moreover, pumping current is not measurable with normal measuring device(am-
pere meter) because maximum value is 3mA. If DTC code is recorded continuously eventhough circuit inspection is
correctly performed and no problem at visual inspection of component is detected, replace Lambda sensor.
VERIFICATION OF VEHICLE REPAIR
E8EDD0DF
Refer to DTC P2238.
DIESEL CONTROL SYSTEM
FLA -497
DTC P2264 DETECTION OF WATER IN FUEL
COMPONENT LOCATION
E739C25B
EGNG006M
GENERAL DESCRIPTION
ED50F276
Diesel fuel filter can seperate water from fuel. If water more than specified amount is detected by "water sensor" installed
at the bottom of fuel filter, "Fuel warning lamp" on cluster turns ON.Especially for high pressure pump or injectors of
common rail diesel engine is fatal. because water causes poor lubrication and corrosion in such accurate devices, fur-
thermore, it leads engine hesitation. In order to prevent this harsh condition to engine, "Water warning lamp" turns ON to
let driver relief the gathered water from the filter and engine power generation is limited.
NOTE
If sensing prove of water sensor contacts with water, impressed voltage on prove is grounded to chassis ground, then
12V is outputted from signal line. With this method, ECM recognizes the amount of water.
water sensing prove
EGNG006N
DTC DESCRIPTION
E0FC45BF
P2246 is set when water sensor operates for more than 4 sec. Water warning lamp turns on and engine power generation
is limited in this condition. When this code is set, water in the filter should be removed to prevent engine from water
contained fuel. If same code is set even after removing water, check short to battery in water in fuel sensor signal circuit
or component failure.
FLA -498
FUEL SYSTEM
DTC DETECTING CONDITION
E62F0E1D
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage Monitoring
Enable Conditions
• IG KEY "ON"
ThresholdValue
• Signal voltage detected at Water sensor
DiagnosticTime
• 4.0sec.
Fuel Cut
NO
EGR Off
NO
Fuel Limit
YES
Fail Safe
MIL
NO
• Water stored inside of
fuel filter
( remove water inside of filter)
• Water sensor circuit(short
to battery)
• Water sensor component
SCHEMATIC DIAGRAM
E8726ABD
1
2
3
C142 J/C terminal 3
Water sensor signal
IG power
Water lamp signal
C101-2 terminal 40
G102 ground point
Cluster
C101-2 ECM
C136 Water sensor
40. Water sensor
signal
C136 Water 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
3
ON/START power(10A ECU FUSE)
3
1
2
[CIRCUIT DIAGRAM]
[HARNESS CONNECTOR]
[CONNECTOR INFORMATION]
Terminal
Terminal
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
EGNG006O
TERMINAL AND CONNECTOR INSPECTION
EE7A97AB
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.
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