Mitsubishi L200. Manual — part 115
TROUBLESHOOTING
DIESEL FUEL
13A-256
STEP 6. Check harness between A-152 (terminal
No. 2) battery current sensor connector and C-
105 (terminal No. 39) engine-ECU connector.
• Check output line for open/short circuit.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
STEP 7. M.U.T.-III data list
• Item No. 402: Battery temperature sensor
OK: At ambient temperature (atmospheric
temperature) of battery temperature sensor,
or equivalent
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 8. Perform resistance measurement at A-
152 battery current sensor connector.
• Disconnect connector and measure at harness
side.
• Resistance between terminal No. 3 and earth.
OK: Continuity (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Go to Step 9 .
AKB00274
1
3
2
4
A-152 (GR)
Harness side
connector
Connector: A-152
AB
AKA00089
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C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
AKB00274
1
3
2
4
A-152 (GR)
Harness side
connector
Connector: A-152
AB
TROUBLESHOOTING
DIESEL FUEL
13A-257
STEP 9. Connector check: C-103 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Repair or replace the connector.
STEP 10. Check harness between A-152 (terminal
No. 3) battery current sensor connector and C-
103 (terminal No. 155) engine-ECU connector.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
AKA00090
101
102
103
104
105
106
107
108
109
110
111
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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
AKB00274
1
3
2
4
A-152 (GR)
Harness side
connector
Connector: A-152
AB
AKA00090
101
102
103
104
105
106
107
108
109
110
111
112
113
114
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118
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120
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146
147
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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-258
STEP 11. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Repair or replace the connector.
STEP 12. Check harness between A-152 (terminal
No. 2) battery current sensor connector and C-
105 (terminal No. 39) engine-ECU connector.
• Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
AKA00089
1
2
3
4
5
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96
C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
AKB00274
1
3
2
4
A-152 (GR)
Harness side
connector
Connector: A-152
AB
AKA00089
1
2
3
4
5
6
7
8
9
10
11
12
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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-259
Code No. P0545: No.1 Exhaust Gas Temperature Sensor Circuit Low Input <Euro5>
OPERATION
• A power voltage of 5 V is applied to the No.1
exhaust gas temperature sensor output terminal
(terminal No. 1) from the engine-ECU (terminal
No. 58).
• The power voltage is earthed to the engine-ECU
(terminal No. 82) from the No.1 exhaust gas tem-
perature sensor (terminal No. 2).
FUNCTION
• The No.1 exhaust gas temperature sensor con-
verts the exhaust gas temperature into a voltage
and inputs the voltage signal to the engine-ECU.
• Engine-ECU uses this voltage output for DPF
regeneration control.
• The No.1 exhaust gas temperature sensor is a
kind of resistor, which has characteristics to
reduce its resistance as the exhaust gas temper-
ature rises. Therefore, the sensor output voltage
varies with the exhaust gas temperature, and
becomes lower as the exhaust gas temperature
rises.
TROUBLE JUDGMENT
Check Conditions
• Battery positive voltage is 8 − 16 V
• 2 seconds later after the ignition switch has been
in "ON" position or the engine has started up.
Judgment Criterion
• The No.1 exhaust gas temperature sensor output
voltage is 0.255 V or less.
PROBABLE CAUSES
• Failed No.1 exhaust gas temperature sensor
• Short circuit in No.1 exhaust gas temperature
sensor circuit or connector damage
AKB00275
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25 26
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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
1 2
AB
O-G
BR-L
Engine-ECU
No. 1 exhaust gas
temperature sensor
A-149
MU802601
No. 1 Exhaust Gas Temperature Sensor Circuit
2
82
1
58
5 V
C-105
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
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