Hyundai Santa Fe (2006 year). Manual — part 432
FL -338
FUEL SYSTEM
COMPONENT INSPECTION
ED9E4369
1.
Check injector component resistance
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect injector connector.
3)
Measure the resistance between injector component terminal 1 and 2.
Specification : 0.33
Ω
(20
℃
)
1
2
EGNG008I
4)
Is the measured resistance(of injector solenoid) within the specification?
YES
▶
Go to "Verification of Vehicle Repair".
NO
▶
Replace injector and go to "Verification of Vehicle Repair".
NOTE
Replacing injectors, peculiar IQA code of each injector should be inputted to ECM
Perform this process using "INJECTOR CORRECTION" function on scantool, Refer to P1670, P1671 for more de-
tailed information.
VERIFICATION OF VEHICLE REPAIR
E62E741F
After a repair, it is essential to verify that the fault is corrected.
1.
After connecting Scantool select "DIAGNOSTIC TROUBLE CODES(DTCs)" mode.
2.
Clear recorded DTC using Scantool.
3.
Drive the vehicle within DTC "Enable conditions" in "General information".
4.
After selecting "DIAGNOSTIC TROUBLE CODES(DTCs)" mode and check if DTC is recorded again.
5.
Are any DTCs recorded ?
YES
▶
Go to the DTC guide of recorded NO. in Scantool.
DTC TROUBLESHOOTING PROCEDURES
FL -339
NO
▶
System operates within specification.
FL -340
FUEL SYSTEM
DTC P0642 SENSOR REFERENCE VOLTAGE "A" CIRCUIT LOW
GENERAL DESCRIPTION
EC7DA3AD
ECM is activated by power supply. Signals from several sensors, such as CKPS and APS, is inputted to ECM. Comparing
inputted siganals with control LOGIC saved at micro controller and EEPROM, ECM controlls engine as actuating injectors,
solenoids and relays. To guarantee accurate control, ECM performs SELF TEST, DIAGNOSIS of several sensors and
actuators. And if serious trouble which affects vehicle performance occurrs, ECM sets DTCs.At certain cases, ECM shuts
down whole systems in order to prevent dangerous situation due to incorrect control.
DTC DESCRIPTION
E391557F
P0642 is set when the voltage below 4.7V - minimum voltage of sensor power supply 1 generates from ECM - is detected
for more than 0.1 sec.. This code is due to the short to ground in sensor power circuit or the voltage problem inside of
ECM.
DTC DETECTING CONDITION
EA9F074F
Item
Detecting Condition
Possible Cause
DTC Strategy
• Voltage monitoring
Enable Conditions
• IG KEY "ON"
Threshold Value
• when the voltage is below the minimum voltage
of sensor power supply. ( below 4.7V )
Diagnostic Time
• 0.1 sec.
Fuel cut
NO
EGR Off
NO
Fuel Limit
YES
Fail Safe
Check
Lamp
NO
• MAFS power supply circuit
• APS 1 power supply circuit
• ECM component
SPECIFICATION
E3B931C6
Sensor power 1
Sensor power 2
Sensor power 3
MAFS, APS 1
4830mV~5158mV
RPS, APS 2,BPS
4830mV~5158mV
A/C pressure transducer,VSA
position Sensor
4830mV~5158mV
DTC TROUBLESHOOTING PROCEDURES
FL -341
SCHEMATIC DIAGRAM
E82B0251
APS
C256
1
2
ECM C230-K (9)
APS 1 Signal
3
4
ECM C230-K (45)
APS 2 Reference Voltage (+5V)
APS 2 Ground
5
ECM C230-K (30)
APS 1 Ground
6
ECM C230-K (8)
APS 1 Reference Voltage (+5V)
ECM C230-K (31)
ECM (C230-K)
[CIRCUIT DIAGRAM]
[HARNESS CONNECTORS]
[CONNECTION INFORMATION]
Terminal
Connected to
Function
APS 2 Signal
ECM C230-K (46)
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
1
2
3
4
5
6
5
2
4
APS (C256)
APS 1
APS 2
45 - Reference Voltage (+5V)
9 - APS 1 Signal
30 - GND
6
3
1
46 - Reference Voltage (+5V)
31 - APS 2 Signal
8 - GND
SCMFL6123L
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