Mitsubishi L200. Manual — part 142
TROUBLESHOOTING
DIESEL FUEL
13A-364
STEP 9. Connector check: C-103 engine-ECU
connector
Q: Is the check result normal?
YES :
Check and repair harness between C-115
(terminal No. 4) accelerator pedal position
sensor connector and C-103 (terminal No.
134) engine-ECU connector.
• Check power supply line for damage.
NO :
Repair or replace the connector.
STEP 10. Perform voltage measurement at C-103
engine-ECU connector.
• Measure engine-ECU terminal voltage.
• Ignition switch: ON
• Voltage between terminal No. 150 and earth.
OK: 0.7
− 1.3 V
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Go to Step 11 .
AKA00090
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144
C-103 (B)
C-103 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-103
AB
AK700804
1
6 5 4 3 2
C-115 (B)
C-115 (B)
Connector: C-115
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
Harness side connector
AKA00090
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102
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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-365
STEP 11. Check harness between C-115 (terminal
No. 3) accelerator pedal position sensor
connector and C-103 (terminal No. 150) engine-
ECU connector.
• Check output line for damage.
Q: Is the check result normal?
YES :
Replace the accelerator pedal position
sensor.
NO :
Repair the damaged harness wire.
STEP 12. Perform voltage measurement at C-103
engine-ECU connector.
• Measure engine-ECU terminal voltage.
• Ignition switch: ON
• Voltage between terminal No. 135 and earth.
OK: 0.2
− 0.8 V
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Go to Step 13 .
AK700804
1
6 5 4 3 2
C-115 (B)
C-115 (B)
Connector: C-115
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
Harness side connector
AKA00090
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102
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152
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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
AKA00090
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102
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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-366
STEP 13. Check harness between C-115 (terminal
No. 6) accelerator pedal position sensor
connector and C-103 (terminal No. 135) engine-
ECU connector.
• Check output line for damage.
Q: Is the check result normal?
YES :
Replace the accelerator pedal position
sensor.
NO :
Repair the damaged harness wire.
STEP 14. Connector check: C-103 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Repair or replace the connector.
STEP 15. M.U.T.-III diagnosis code
• Reconfirmation of diagnosis code.
Q: Is the diagnosis code set?
YES :
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,
the vehicle equipped with the DPF carries
out the forcible DPF regeneration. (Refer to
GROUP 17
− Emission Control − Diesel
Particulate Filter (DPF) System
− Forcible
DPF Regeneration ).
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use Troubleshooting/
Inspection Service Points
− How to Cope
with Intermittent Malfunctions ).
AK700804
1
6 5 4 3 2
C-115 (B)
C-115 (B)
Connector: C-115
<R.H. drive vehicles>
<L.H. drive vehicles>
AB
Harness side connector
AKA00090
101
102
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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
AKA00090
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102
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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-367
Code No. P2146: Injector Common 1 (cylinder No. 1 and No. 4) Circuit Open <Euro5>
OPERATION
• Refer to Code No. P0201: No. 1 Injector Circuit
Malfunction
• Refer to Code No. P0204: No. 4 Injector Circuit
Malfunction
FUNCTION
• The engine-ECU monitors peak current from the
No. 1 and No. 4 injector drive circuits.
TROUBLE JUDGMENT
Check Conditions
• Ignition switch is in "ON" position.
• Except during the engine cranking period
• Battery positive voltage is 8 V or more.
Judgment Criterion
• When the peak current is not detected in injector
circuits No. 1 and No. 4
PROBABLE CAUSES
• Failed No. 1 injector
• Failed No. 4 injector
• Open/short circuit in No. 1 and No. 4 injector cir-
cuit or loose connector contact
• Failed engine-ECU
DIAGNOSIS PROCEDURE
WARNING
A high-tension voltage is flowing between
the engine-ECU and the injectors while the
engine is running. Handle them carefully to
avoid receiving electric shocks from the volt-
age.
STEP 1. Connector check: A-42 No. 1 injector
connector and A-129 No. 4 injector connector
Q: Are the check results normal?
YES :
Go to Step 2 .
NO :
Repair or replace the connector.
STEP 2. Check Injector itself
• Check No. 1 injector and No. 4 injector itself
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Replace the injector. After replacing the
Injector, register the injector identification
code and learn fuel injection (Refer to
GROUP 00
− Precautions Before Service −
What The Common Rail Engine Learns ).
STEP 3. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair or replace the connector.
AKA00190
1
2
Connectors: A-42, A-129
A-42 (GR)
A-129 (GR)
Harness side
connector
AB
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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
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