Mitsubishi L200. Manual — part 152
TROUBLESHOOTING
DIESEL FUEL
13A-404
STEP 4. Check harness between C-105 (terminal
No. 50) engine-ECU connector and A-130
(terminal No. 1) No. 3 injector connector.
• Check earthing line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair the damaged harness wire.
STEP 5. Check harness between C-105 (terminal
No. 73) engine-ECU connector and A-41 (terminal
No. 2) No. 2 injector connector
• Check power supply line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair the damaged harness wire.
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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
AKA00188
1
2
Connector: A-130
A-130 (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
AKA00187
1
2
Connector: A-41
A-41 (GR)
Harness side
connector
AB
TROUBLESHOOTING
DIESEL FUEL
13A-405
STEP 6. Check harness between C-105 (terminal
No. 49) engine-ECU connector and A-130
(terminal No. 2) No. 3 injector connector.
• 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. Check Injector itself
• Check No. 2 injector and No. 3 injector itself
Q: Is the check result normal?
YES :
Go to Step 8 .
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 8. M.U.T.-III diagnosis code.
• After erasing the diagnosis code through M.U.T.-
III, start the engine and confirm whether the diag-
nosis code is set.
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,
carry 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 ).
Code No. P2228: Barometric Pressure Sensor Circuit Low Input
FUNCTION
• The barometric pressure sensor converts the bar-
ometric pressure into a voltage signal and inputs
the signal to the engine-ECU.
• In response to the signal, the engine-ECU cor-
rects the fuel injection amount, etc.
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 barometric pressure sensor output voltage is
1.60 V or less for 0.5 second.
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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
AKA00188
1
2
Connector: A-130
A-130 (GR)
Harness side
connector
AB
TROUBLESHOOTING
DIESEL FUEL
13A-406
PROBABLE CAUSE
• Failed barometric pressure sensor
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III data list
• Refer to Data List Reference Table
.
a. Item 5: Barometric pressure 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,
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 ).
Code No. P2229: Barometric Pressure Sensor Circuit High Input
FUNCTION
• The barometric pressure sensor converts the bar-
ometric pressure into a voltage signal and inputs
the signal to the engine-ECU.
• In response to the signal, the engine-ECU cor-
rects the fuel injection amount, etc.
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 barometric pressure sensor output voltage is
4.80 V or less for 0.5 second.
PROBABLE CAUSE
• Failed barometric pressure sensor
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III data list
• Refer to Data List Reference Table
.
a. Item 5: Barometric pressure 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,
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 ).
TROUBLESHOOTING
DIESEL FUEL
13A-407
Code No. P2413: EGR System Performance
OPERATION
• System power is supplied from the engine-ECU
(terminal No. 115) to the EGR valve (terminal No.
6).
• The engine-ECU (terminal No. 130) turns on the
power transistor to flow current to the EGR valve
(terminal No. 4).
FUNCTION
• The engine-ECU performs duty control over the
EGR valve (DC motor).
• The engine-ECU performs feedback control over
the EGR valve based on the signals from the
EGR position sensor.
TROUBLE JUDGMENT
Check Condition
• Ignition switch is in "ON" position
Judgment Criterion
• The EGR valve in sticking state (a high duty state
continues for the predetermined time or more) is
repeatedly detected.
PROBABLE CAUSES
• Failed EGR valve
• Open/short circuit or harness damage in EGR
valve circuit or loose connector contact
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III diagnosis code
Q: Is any other diagnosis code than P2413 output?
YES :
Inspection chart for diagnosis codes (Refer
to
NO :
Go to Step 2 .
STEP 2. Check EGR valve itself
• Check EGR valve itself [Refer to GROUP 17 −
Emission Control System
− Exhaust Gas Recir-
culation (EGR) System
− EGR valve check ].
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Replace the EGR valve assembly.
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.
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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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