Mitsubishi L200. Manual — part 172
TROUBLESHOOTING
DIESEL FUEL
13A-484
STEP 10. Connector check: C-111 combination
meter connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair or replace the connector.
STEP 11. Check harness between A-122 (terminal
No. 3) alternator connector and C-111 (terminal
No. 52) combination meter connector.
NOTE: Before checking harness, check intermediate
connectors A-27, C-14 <R.H. drive vehicles> and C-
54 <L.H. drive vehicles>, and repair if necessary.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Check the alternator.
NO :
Repair the damaged harness wire.
AK700806
62
64
61 60 59 58
63
57
53
54
55
52 51
56
Harness side connector
C-111
C-111
Connector: C-111
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
AKB00292
M
2
1
3
4
AB
A-122 (GR)
Harness side
connector
Connector: A-122
AK700806
62
64
61 60 59 58
63
57
53
54
55
52 51
56
Harness side connector
C-111
C-111
Connector: C-111
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
TROUBLESHOOTING
DIESEL FUEL
13A-485
STEP 12. Perform voltage measurement at C-103
engine-ECU connector.
• Measure engine-ECU terminal voltage.
• Engine: Idling after warm-up
• Transmission: Neutral <M/T> or P range <A/T>
• Voltage between terminal No. 121 and earth.
OK: The voltage increases when the head-
lamp switch and the rear window defogger
switch are turned ON from OFF.
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 ).
Inspection Procedure 14: Battery Rundown <Except Euro5>
PROBABLE CAUSES
• Failed battery
• Failed alternator
• Damaged harness (Circuit related to charging
system has an open circuit or is earthed)
• Damaged connector (Circuit related to charging
system)
DIAGNOSIS PROCEDURE
STEP 1. Check battery.
• Check battery (Refer to GROUP 54A − Battery −
On-vehicle Service
− Battery Test ).
Q: Is the check result normal?
YES :
Check charging system (Refer to GROUP
16
− Charging System − On-vehicle Service
− Output Current Test ).
NO :
Replace the battery.
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
TROUBLESHOOTING
DIESEL FUEL
13A-486
Inspection Procedure 15: Overheating
PROBABLE CAUSES
• Failed cooling fan system
• Insufficient or deteriorated engine coolant
• Failed thermostat
• Failed water pump
• Failed radiator core
DIAGNOSIS PROCEDURE
STEP 1. Check cooling system.
• Check cooling fan system (Refer to GROUP 55A
− Troubleshooting − Symptom Procedures
<manual A/C>, Refer to GROUP 55B
− Trouble-
shooting
− Symptom Procedures <automatic A/
C>).
Q: Is the check result normal?
YES :
Check cooling system.
NO :
Repair or replace the failed item.
TROUBLESHOOTING
DIESEL FUEL
13A-487
Inspection Procedure 16: Engine-ECU Power Supply System
OPERATION
• When the ignition switch ON signal is input to the
engine-ECU, the engine-ECU places the engine
control relay in the ON position. Accordingly, the
battery voltage is supplied to the engine-ECU,
sensor and actuator.
PROBABLE CAUSES
• Failed battery
• Failed ignition switch
AKB00288
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
1 2 3
4 5 6
A-20X
C-103
IG2
ST
R
LOCK
ACC
IG1
10
20A
9
7.5A
Fusible link
Ignition switch
2
14
J/B
104
C-208
C-207
4
Engine
control
relay
4
1
3
2
118
102
101
117
145
116
C-103
B
B
B
Power
source
8
C-103
3
A-115
Relay
box
W-R
W-B
B-W
L-B
Y-G
R
W-B
R
R
Power Supply and Ignition Switch-IG Circuit
Engine-ECU
C-307
OFF
ON
23
C-53*¹
or
C-35*²
W-B
W
AB
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
NOTE
*1: L.H. drive vehicles
*2: R.H. drive vehicles
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