Mitsubishi L200. Manual — part 88
TROUBLESHOOTING
DIESEL FUEL
13A-148
STEP 5. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair or replace the connector.
STEP 6. Check harness between A-44 (terminal
No. 1) rail pressure sensor connector and C-105
(terminal No. 70) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connector A-131, and repair if necessary.
• Check power supply line for 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
• Refer to Data List Reference Table
.
a. Item 63: Rail pressure sensor
Q: Is the check result normal?
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
AK501327
1
2
3
AB
A-44 (B)
Harness side
connector
Connector: A-44
AKA00089
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2
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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
TROUBLESHOOTING
DIESEL FUEL
13A-149
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,
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 ).
STEP 8. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Check intermediate connector A-131, and
repair if necessary. If intermediate
connector is normal, check and repair
harness between A-44 (terminal No. 1) rail
pressure sensor connector and C-105
(terminal No. 70) engine-ECU connector.
• Check power supply line for open
circuit and damage.
NO :
Repair or replace the connector.
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
AK501327
1
2
3
AB
A-44 (B)
Harness side
connector
Connector: A-44
TROUBLESHOOTING
DIESEL FUEL
13A-150
STEP 9. Perform resistance measurement at A-44
rail pressure 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 12 .
NO :
Go to Step 10 .
STEP 10. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair or replace the connector.
STEP 11. Check harness between A-44 (terminal
No. 3) rail pressure sensor connector and C-105
(terminal No. 88) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connector A-131, and repair if necessary.
• Check earthing line for damage.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
AK501327
1
2
3
AB
A-44 (B)
Harness side
connector
Connector: A-44
AKA00089
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2
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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
AKA00089
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2
3
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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
AK501327
1
2
3
AB
A-44 (B)
Harness side
connector
Connector: A-44
TROUBLESHOOTING
DIESEL FUEL
13A-151
STEP 12. Perform voltage measurement at A-44
rail pressure sensor connector.
• Use special tool test harness (MB991658) to con-
nect connector, and measure at pick-up harness.
• Engine: Idle (after warning up)
• Voltage between terminal No. 2 and earth.
OK: 1.15
− 1.75 V
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Go to Step 13 .
STEP 13. Connector check: C-105 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Repair or replace the connector.
STEP 14. Check harness between A-44 (terminal
No. 2) rail pressure sensor connector and C-105
(terminal No. 64) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connector A-131, and repair if necessary.
• Check output line for short circuit.
Q: Is the check result normal?
YES :
Replace the common rail assembly.
NO :
Repair the damaged harness wire.
AK501327
1
2
3
AB
A-44 (B)
Harness side
connector
Connector: A-44
AKA00089
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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
AKA00089
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2
3
4
5
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91
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95
96
C-105 (B)
C-105 (B)
<R.H. drive vehicles>
Harness side connector
<L.H. drive vehicles>
Connector: C-105
AB
AK501327
1
2
3
AB
A-44 (B)
Harness side
connector
Connector: A-44
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