Mitsubishi L200. Manual — part 113
TROUBLESHOOTING
DIESEL FUEL
13A-248
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III data list
• Refer to Data List Reference Table
.
a. Item 16: EGR valve position sensor
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
NO :
Go to Step 2 .
STEP 2. Connector check: A-45 EGR valve
assembly connector
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair or replace the connector.
STEP 3. Perform resistance measurement at A-45
EGR valve assembly connector.
• Disconnect connector, and measure at harness
side.
• Resistance between terminal No. 2 and earth.
OK: Continuity (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Go to Step 4 .
STEP 4. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair or replace the connector.
AK501331
1
2
3
4
5
6
AB
Harness side
connector
A-45 (GR)
Connector: A-45
AK501331
1
2
3
4
5
6
AB
Harness side
connector
A-45 (GR)
Connector: A-45
AKA00089
1
2
3
4
5
6
7
8
9
10
11
12
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72
43
44
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48
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81
82
83
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85
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90
91
92
93
94
95
96
C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
TROUBLESHOOTING
DIESEL FUEL
13A-249
STEP 5. Check harness between A-45 (terminal
No. 2) EGR valve assembly connector and C-105
(terminal No. 81) engine-ECU connector.
• Check earthing line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair the damaged harness wire.
STEP 6. M.U.T.-III data list
• Refer to Data List Reference Table
.
a. Item 16: EGR valve position sensor
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
NO :
Replace the engine-ECU. When the engine-
ECU is replaced, write the chassis number
(Refer to GROUP 00
− Precautions Before
Service
− How to Perform Chassis Number
Writing ). After replacing the engine-ECU,
register the injector identification code and
learn fuel injection (Refer to GROUP 00
−
Precautions Before Service
− What The
Common Rail Engine Learns ). After
registering the injector identification code,
carry out the forcible DPF regeneration.
(Refer to GROUP 17
− Emission Control −
Diesel Particulate Filter (DPF) System
−
Forcible DPF Regeneration ).
STEP 7. M.U.T.-III data list
• Refer to Data List Reference Table
.
a. Item 16: EGR valve position sensor
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
NO :
Replace the EGR valve assembly.
AK501331
1
2
3
4
5
6
AB
Harness side
connector
A-45 (GR)
Connector: A-45
AKA00089
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
43
44
45
46
47
48
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
TROUBLESHOOTING
DIESEL FUEL
13A-250
Code No. P0502: Vehicle Speed Sensor Low Input <2WD-M/T and 4WD vehicles>
AKA00104
1
2
3
1
2
3
4
101 102
103104 105 106107 108109 110 111112 113 114115
118119 120 121122 123124 125126127 128 129130
131132 133 134135 136137 138139140 141142 143
146147 148 149150 151152 153154155 156 157158
117
145
116
144
10
23
20A
B-01
(MU802723)
Vehicle speed sensor
141
B
W-L
W-L
W-L
W-L
R
R
R
Engine-ECU
A-20X
10
2
A-28
1
3
2
C-29
Vehicle Speed Sensor Circuit
C-103
Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Grey
R: Red P: Pink V: Violet
PU: Purple SI: Silver
22
11
21
4
J/C (2)
C-127
C-30
5 V
Engine
control
relay
4
1
3
2
3
A-115
Relay
box
W-R
Fusible link
To engine-ECU
W-B
W-B
OFF
ON
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
W-B
C-53*¹
or
C-35*²
AB
TROUBLESHOOTING
DIESEL FUEL
13A-251
OPERATION
• A power voltage of 5 V is applied to the vehicle
speed sensor (terminal No. 3) from the engine-
ECU (terminal No. 114).
FUNCTION
• The vehicle speed sensor converts the vehicle
speed to the voltage, and then input it into the
engine-ECU
TROUBLE JUDGMENT
Check Conditions
• Engine is running
• Engine coolant temperature is 80°C or higher
• The last fuel injection rate exceeds the specified
value.
• Engine speed is 2,900 r/min or more.
Judgment Criterion
• Vehicle speed is 5 km/h or lower for 2 seconds.
PROBABLE CAUSES
• Failed vehicle speed sensor
• Open/short circuit or harness damage in vehicle
speed sensor circuit or loose connector contact
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check the speed meter
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Check the speed meter (Refer to GROUP
54A
−Combination Meter − On-vehicle
Service
− Speedometer Check ).
STEP 2. M.U.T.-III data list
• Refer to Data list reference table
a. Item 4: Vehicle speed sensor
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
NO :
Go to Step 3 .
STEP 3. Connector check: C-103 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair or replace the connector.
AKA00090
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
146
147
148
149
150
151
152
153
154
155
156
157
158
117
145
116
144
C-103 (B)
C-103 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-103
AB
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