Hyundai Santa Fe (2006 year). Manual — part 373
FL -102
FUEL SYSTEM
DTC P0069 BOOST PRESSURE SENSOR CIRCUIT MALFUNCTION
COMPONENT LOCATION
E1BE504F
VGT Control Solenoid Valve
BPS & IATS #2
SCMFL6500L
GENERAL DESCRIPTION
E18B084E
Boost Pressure Sensor(BPS) is installed in intake manifold and senses the pressure of air inside of intake manifold which
is compressed by turbo charager.Measuring mass air flow accurately with the information of intake mainfold pressure,
mass air flow and intake air temperature, ECM performs actuating correction of EGR and VGT.When excessive intake
manifold pressure is detected, engine power generation is limited to protect engine because too highly compressed pres-
sure due to turbo charger may harm engine.
DTC DESCRIPTION
E1A24E17
P0069 is set when the difference between Boost pressure and atmospheric pressure sensor is above 100hpa at below
100RPM(in other word, IG KEY ON condition) for more than 2 sec. This code is due to abnormal output characteristic of
BPS component.
DTC DETECTING CONDITION
EAA4EA2C
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• IG KEY "ON" (below 100RPM)
Threshold Value
• |Boost pressure - Atmospheric pressure|
is above 100hpa.
Diagnostic Time
• 2 sec.
Fuel cut
NO
EGR Off
YES
Fuel Limit
YES
Fail Safe
Check
Lamp
NO
• Boost pressure is fixed
at 1000 hpa.
• BPS circuit
• BPS component
DTC TROUBLESHOOTING PROCEDURES
FL -103
SPECIFICATION
E96F7817
Pressure [Kpa]
20
100
190
250
Output voltage [V]
0.4±0.077
1.878±0.063
3.541±0.063
4.650±0.077
SCHEMATIC DIAGRAM
E12D020E
BPS & IATS #2
C283
1
2
ECM C230-A (13)
BPS Signal
Reference Voltage (+5V)
ECM C230-A (40)
3
4
ECM C230-A (23)
IATS #2 Signal
Sensor ground
ECM C230-A (53)
ECM (C230-A)
BPS & IATS #2 (C283)
P
1
2
4
23 - GND
53 - IATS #2 Signal
13 - Reference Voltage (+5V)
40 - BPS Signal
[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
4
3
2
1
SCMFL6118L
FL -104
FUEL SYSTEM
SIGNAL WAVEFORM AND DATA
E98FDD7C
Fig.1
Fig1). This is the waveform of BPS as accelerating from idle state. Signal voltage rises as accelerating.
BPS signal
LFIG208A
MONITOR SCANTOOL DATA
E9EBA7FE
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 "BOOST PRESSURE SENSOR" parameter on the Scantool.
Specification : 1000hpa ± 100hpa(VGT actuator : approx. 76%) at idle
Fig.1
Fig.2
Fig1) Monitor "BOOST PRESSURE SENSOR" parameter on the Scantool at idle after warming engine up.
1000hpa
100hpa(approx. 1 atm) is correct value.
Fig.2) VGT actuator duty and boost pressure atacceleration is shown . If boost pressure rises and reaches certain value,
VGT actuator duty stops to drop and keeps steady. Releasing accelerator pedal at this moment,
VGT actuator duty drops to approx. 45%, then if RPM drops to idle range, duty returns to 76%.
SCMFL6205L
DTC TROUBLESHOOTING PROCEDURES
FL -105
TERMINAL AND CONNECTOR INSPECTION
EE7CA11A
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 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
▶
Go to "Component Inspection ".
COMPONENT INSPECTION
E42A32F0
1.
BPS visual inspection
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect BPS connector.
3)
Check if corrosion and damage in BPS terminal is detected.
4)
Check BPS mounting state, leakage at O’ring, clogged carbon at pressure detecting hall.
5)
Are the problems relevant to BPS found?
YES
▶
Replace BPS if necessary and go to "Verification of Vehicle Repair".
NO
▶
Go to "2. Check BPS output voltage at IG KEY ON" as follows.
2.
Check BPS output voltage at IG KEY ON
1)
IG KEY "OFF", ENGINE "OFF".
2)
Connect Scantool to Data Link Connector (DLC).
3)
IG KEY "ON"
4)
Monitor "ATMOSPHERIC PRESSURE" and "BOOST PRESSURE SENSOR" parameters on scantool.
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