Hyundai: Engine D4FA. Manual — part 130
DIESEL CONTROL SYSTEM
FLA -391
VERIFICATION OF VEHICLE REPAIR
E8A43040
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.
NO
▶ System operates within specification.
FLA -392
FUEL SYSTEM
DTC P0830 CLUTCH PEDAL SWITCH "A" CIRCUIT
GENERAL DESCRIPTION
E4EF4AAC
Clutch switch is connected to clutch pedal and transmits clutch operating state to ECM.When clutch pedal is depressed
during driving, engine load changes from loaded to none loaded condition. However, ECM regards vehicle to be loaded
becuase VSS signal is still inputted to it. therefore, ECM controls none loaded engine with the condition suitable for loaded
engine.Accordingly, optimum fuel injection control is not performed then, RPM becomes unstable and smoke is produced.
Clutch operation is detected through clutch switch signal. This signal enables ECM to cope with instant change of load
condition. Besides, clutch switch signal is used to detect engaged gear with vehicle speed and engine speed.
DTC DESCRIPTION
E66D9532
P0830 is set when no clutch switch signal change is detected 1). within 2 sec. after shifting gear during driving. 2). while
gear shifts 4 times at above 10Km/h and 1000rpm. This code is due to 1) clutch switch component failure or 2) open or
short in circuit 3) improper height of clutch pedal.
※ECM recognize ingaged gear with rpm and vehicle speed sensor signal.
DTC DETECTING CONDITION
E144A414
Item
Detecting Condition
Possible Cause
DTC Strategy
• Signal monitoring
Enable Conditions
• Engine run
ThresholdValue
• No clutch switch signal change is detected within
2 sec. after shifting gear during driving
• No clutch switch signal change is detected until gear
shifted 4 times at above 10Km/h and 1000rpm
DiagnosticTime
• immediately
Fuel Cut
NO
EGR Off
NO
Fuel Limit
NO
Fail Safe
MIL
NO
• Clutch S/W circuit
• Clutch S/W component
• Clutch S/W pedal hight
SPECIFICATION
E48888BA
Condition
Clutch Pedal Depressed
Clutch Pedal Released
Switch Operation
Switch ON
Switch OFF
DIESEL CONTROL SYSTEM
FLA -393
SCHEMATIC DIAGRAM
EEF9790E
1
2
G13 ground point
Chassis ground
Clutch S/W signal
C101-2 terminal 79
E12 Clutch S/W
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
E12 Clutch S/W
79. Clutch S/W signal
C101-2 ECM
1
2
1
2
[CIRCUIT DIAGRAM]
[HARNESS CONNECTOR]
[CONNECTOR INFORMATION]
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
EGNG004C
SIGNAL WAVEFORM AND DATA
E6693B91
Clutch pedal ON
Clutch pedal OFF
Fig.1
Fig.1) The waveform of clutch switch when clutch pedal is depressed. The output voltage of clutch pedal is 0V when clutch pedal
is depressed and 12V when released.
EGNG004D
MONITOR SCANTOOL DATA
EDD53229
1.
Connect scantool to Data Link Cable. (DLC)
2.
Warm engine up to normal operating temperature.
3.
Turn "OFF" electrical devices and A/C.
4.
Select "CLUTCH SWITCH" parameter on the Scantool.
FLA -394
FUEL SYSTEM
Specification : When clutch switch released : CLUTCH SWITCH : OFF
When clutch switch depressed : CLUTCH SWITCH : ON
Fig.1
Fig. 1) Check if "CLUTCH SWITCH" parameter changes correctly from "ON" to "OFF" and vice versa as activating clutch pedal.
EGNG004E
TERMINAL AND CONNECTOR INSPECTION
E84FF789
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 or
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 "Signal Circuit Inspection".
SIGNAL CIRCUIT INSPECTION
EAD89C37
1.
Check clutch switch pull-up voltage
1)
IG KEY "OFF", ENGINE "OFF".
2)
Disconnect clutch switch connector.
3)
IG KEY "ON".
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