Mitsubishi L200. Manual - part 95

 

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Mitsubishi L200. Manual - part 95

 

 

TROUBLESHOOTING

DIESEL FUEL

13A-176

DIAGNOSIS PROCEDURE

CAUTION

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 voltage.

STEP 1. Connector check: A-129 No. 4 injector 
connector

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace the connector.

STEP 2. Check No. 4 injector itself.

• Check No. 4 injector itself (Refer to 

P.13A-595

).

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Replace the No. 4 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. Check harness between No. 4 injector 
connector and engine-ECU connector.

Check harness between A-129 (terminal No. 1) No. 4 
injector connector and C-105 (terminal No. 27) 
engine-ECU connector.

• Check earthing line for open/short circuit and 

damage.

Q: Are the check results normal?

YES : 

Go to Step 4 .

NO : 

Repair the damaged harness wire.

AKA00189

1

2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

AKA00189

1

2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

AKA00089

1

2

3

4

5

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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-177

STEP 4. Check harness between A-129 (terminal 
No. 2) No. 4 injector connector and C-105 
(terminal No. 1) engine-ECU connector.

• Check power supply line for open/short circuit 

and damage.

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair or replace the connector.

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. 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 ).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

Code No. P0219: Engine Overspeed Condition

OPERATION

• Refer to Code No. P0335: Crank Angle Sensor 

System 

P.13A-184

.

AKA00189

1

2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

AKA00089

1

2

3

4

5

6

7

8

9

10

11

12

13

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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

AKA00089

1

2

3

4

5

6

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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-178

FUNCTION

• The engine-ECU monitors the engine speeds 

based on the signals from the crank angle sen-
sor.

• The engine-ECU checks whether the engine 

speeds are too high.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in ON position

Judgment Criterion

• Engine speed is 5,500 r/min or more

PROBABLE CAUSE

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Q: Is any other diagnosis code than P0219 output?

YES : 

Inspection chart for diagnosis codes (Refer 

to 

P.13A-21

).

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. P0234: Turbocharger Overboost Condition <Except Euro5>

FUNCTION

• The engine-ECU checks whether the boost pres-

sure is not higher than the specified value.

TROUBLE JUDGMENT

Check Condition

• Engine is running

Judgement Criterion

• The boost pressure exceeds the abnormality 

determination value for 3 seconds.

PROBABLE CAUSES

• Failed the waste gate actuator

• Failed the engine-ECU

DIAGNOSIS

STEP 1. Check waste gate actuator itself.

• Check waste gate actuator itself (Refer to 

GROUP 15 

− On-vehicle Service − Waste Gate 

Actuator Check ).

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Replace the waste gate actuator.

STEP 2. 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, 
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 ).

TROUBLESHOOTING

DIESEL FUEL

13A-179

Code No. P0299: Turbocharger Under Boost Condition

FUNCTION

• The engine-ECU checks whether the boost pres-

sure is not lower than the specified value.

TROUBLE JUDGMENT

Check Condition

• Engine is running

Judgment Criterion

• The opening degree of accelerator pedal is 23% 

for 3 seconds and the boost pressure is not lower 
than the specified value.

PROBABLE CAUSES

• Intercooler air hose disconnected or damaged

• Vacuum hose of manifold absolute pressure sen-

sor disconnected or damaged

• Failed manifold absolute pressure sensor

• Failed engine-ECU

DIAGNOSIS

STEP 1. Check on intercooler air hose.

• Check whether the intercooler air hose is discon-

nected or damaged.

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair.

STEP 2. Check on vacuum hose of manifold 
absolute pressure sensor.

• Check whether the vacuum hose of manifold 

absolute pressure sensor is disconnected or 
damaged.

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair.

STEP 3. Check turbocharger supercharging 
pressure..

• Check turbocharger supercharging pressure 

(Refer to GROUP 15 

− On-vehicle − Turbo-

charger Supercharging Pressure Check ).

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Repair.

STEP 4. M.U.T.-III diagnosis code

• Reconfirmation of diagnosis code.

Q: Is the check result normal?

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 ).

Code No. P0301: No. 1 Cylinder Injector Malfunction (No Injection)

FUNCTION

• The Engine-ECU, by monitoring the variation in 

the engine revolution, detects the non-fuel injec-
tion state.

TROUBLE JUDGMENT

Check Conditions

• During the normal engine operation

• Engine coolant temperature is 80°C or higher.

• Crank angle sensor is normal.

Judgment Criterion

• The variation in the engine revolution is more 

than the specified value.

PROBABLE CAUSES

• Failed No. 1 injector

• No. 1 fuel injection pipe clogged

• Failed Engine-ECU

 

 

 

 

 

 

 

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