Hyundai Santa Fe (2006 year). Manual — part 638
FLA -618
FUEL SYSTEM
SPECIFICATION
E7DC80BC
(REFERENCE ONLY)
Test Condition
HO2S Voltage(Sensor1)
HO2S Voltage(Sensor2)
HO2S Signal
at idle after warm-up
Signal is commonly switching
from rich to lean more than 3
times in 10 sec.
Signal is commonly above 0.6V.
HO2S signal at open circuit
(Pumping current OFF)
Approx. 0.45V
HO2S signal at open circuit
(Pumping current ON)
Approx. 3.5V
DTC TROUBLESHOOTING PROCEDURES
FLA -619
SCHEMATIC DIAGRAM
E84C21A1
HO2S [Bank 1/Sensor 1]
HO2S [Bank 2/Sensor 1]
PCM
C91-1,2
C30-B
PCM (C30-B)
HO2S [B1/S1] (C91-1)
1
2
1
21
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
11
31
12
32
13
33
14
34
15
35
16
36
17
37
18
38
19
39
20
40
41
61
42
62
43
63
44
64
45
65
46
66
47
67
48
68
49
69
50
70
51
71
52
72
53
73
54
74
55
75
56
76
57
77
58
78
59
79
60
80
Battery Voltage (B+)
Main Relay
3
4
PCM C30-B (30)
HO2S [B1/S1] Signal
Sensor ground
PCM C30-B (49)
Main Relay
3
4
1
2
49 - HO2S [B1/S1] Signal
30 - GND
70 - Heater [B1/S1] Control
HO2S [B2/S1] (C91-2)
Main Relay
3
4
1
2
51 - HO2S [B2/S1] Signal
28 - GND
67 - Heater [B2/S1] Control
HO2S [B1/S2] (C91-3)
Main Relay
3
4
1
2
50 - HO2S [B1/S2] Signal
31 - GND
74 - Heater [B1/S2] Control
HO2S [B2/S2] (C91-4)
Main Relay
3
4
1
2
52 - HO2S [B2/S2] Signal
29 - GND
73 - Heater [B2/S2] Control
1
2
3
4
PCM C30-B (28)
HO2S [B2/S1] Signal
Sensor ground
PCM C30-B (51)
Battery Voltage (B+)
Main Relay
PCM C30-B (67)
Heater
[B2/S1] Control
1
2
3
4
PCM C30-B (31)
HO2S [B1/S2] Signal
Sensor ground
PCM C30-B (50)
Battery Voltage (B+)
Main Relay
PCM C30-B (74)
Heater
[B1/S2] Control
1
2
3
4
PCM C30-B (29)
HO2S [B2/S2] Signal
Sensor ground
PCM C30-B (52)
Battery Voltage (B+)
Main Relay
PCM C30-B (73)
Heater
[B2/S2] Control
[CIRCUIT DIAGRAM]
[HARNESS CONNECTORS]
[CONNECTION INFORMATION]
Terminal
Connected to
Function
Terminal
Connected to
Function
Terminal
Connected to
Function
Terminal
Connected to
Function
HO2S [B1/S1]
HO2S [B2/S1]
HO2S [B1/S2]
HO2S [B2/S2]
PCM C30-B (70)
Heater
[B1/S1] Control
HO2S [Bank 1/Sensor 2]
HO2S [Bank 2/Sensor 2]
C91-3,4
2
1
4
3
1
2
3
4
SCMF16110L
FLA -620
FUEL SYSTEM
SIGNAL WAVEFORM AND DATA
EB33658C
Fig) Signal waveforms of front HO2S(the upper) and rear HO2S(the lower)
SCMF16223L
After warming-up, if accelerator pedal is released suddenly around 4000rpm, the HO2S signal reading will be lower than
200mV resulting from Fuel cut-off for the moment. Conversely, if suddenly accelerator pedal is depressed, HO2S signal
reading will be around 0.6V ~1.0V. At idle, Normally HO2S signal will switch from lean to rich with 3 Hz. And as racing,
Its frequency rises.
MONITOR DTC STATUS
E3C15C92
1.
Check DTC Status
1)
Connect scantool to Data Link Connector(DLC).
2)
IG "ON".
3)
Select "Diagnostic Trouble Codes(DTCs)" mode, and then Press F4(DTAL) to check DTC’s information from the
DTCs menu
4)
Read "DTC Status" parameter.
SCMF16159L
5)
Is parameter displayed "Present fault"?
DTC TROUBLESHOOTING PROCEDURES
FLA -621
YES
▶ Go to "Component Inspection" procedure.
NO
▶ Fault is intermittent caused by poor contact in the sensor’s and/or PCM’s connector or was repaired and PCM
memory was not cleared. Thoroughly check connectors for looseness, poor connection, ending, corrosion, con-
tamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair"
procedure.
COMPONENT INSPECTION
E2E4FDEE
1.
Check the condition of HO2S
1)
Check HO2S for poor connection or loose terminal.
2)
Check if HO2S is ensurely installed.
3)
Is the conditions of HO2S normal ?
YES
▶ Go to "Check the Signal waveform of HO2S" as follows.
NO
▶ Repair it and then go to "Verification of Vehicle Repair" procedure.
2.
Check the Signal waveform of HO2S
1)
IG "OFF" and connect HO2S connector.
2)
Engine start.
3)
After warming-up, monitor signal waveform of HO2S with scantool.?
Fig) Signal waveform of front(the upper) and rear(the lower) HO2S at idle
SCMF16225L
4)
Is the sensor switching properly?
YES
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