Mitsubishi L200. Manual - part 168

 

  Index      Mitsubishi     Mitsubishi L200 - service repair manual 2012 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  166  167  168  169   ..

 

 

Mitsubishi L200. Manual - part 168

 

 

TROUBLESHOOTING

DIESEL FUEL

13A-468

STEP 3. M.U.T.-III data list.

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 5: Barometric pressure sensor
b. Item 6: Manifold absolute pressure sensor

c. Item 7: Engine coolant temperature sensor

d. Item 8: EGR gas temperature sensor 

<Euro5>

e. Item 8: Intake air temperature sensor No. 2 

<Except Euro5>

f. Item 9: Accelerator pedal position sensor 

(main)

g. Item 10: Accelerator pedal position sensor 

(sub)

h. Item 13: Accelerator pedal position sensor 

(main) learned closed position

i. Item 16: EGR valve position sensor
j. Item 17: EGR valve target position

k. Item 21: Fuel temperature sensor

l. Item 43: Intake air temperature sensor No. 1

m. Item 45: Throttle position sensor

n. Item 46: Throttle position sensor learned 

closed position

Q: Are the check results normal?

YES : 

Go to Step 4 .

NO : 

Perform the diagnosis code classified check 
procedure for the sensor that has shown an 
abnormal data value (Refer to Inspection 
Chart for Diagnosis Code 

P.13A-21

).

STEP 4. Check injector identification code.

• Check injector identification code (Refer to 

GROUP 00 

− Precautions Before Service − Injec-

tor Identification code Registration Procedure ).

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Register the injector ID.

STEP 5. Supply pump correction learning.

• Carry out the supply pump correction learning 

(Refer to GROUP 00 

− Precautions Before Serv-

ice 

− Supply Pump Correction Learning ).

Q: Does trouble symptom persist?

YES : 

Go to Step 6 .

NO : 

The procedure is complete.

STEP 6. Small injection quantity learning.

• Carry out the small injection quantity learning 

procedure (Refer to GROUP 00 

− Precautions 

Before Service 

− Small Injection Quantity Learn-

ing Procedure ).

Q: Does trouble symptom persist?

YES : 

Go to Step 7 .

NO : 

The procedure is complete.

STEP 7. Check air cleaner.

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Replace air cleaner.

STEP 8. Confirm the using fuel.

Q: Is the specified fuel being used?

YES : 

Go to Step 9 .

NO : 

Replace fuel.

STEP 9. Check fuel supply line.

• Check for fuel leakage and clogging.

• Check fuel filter for clogging.

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace the failed item.

STEP 10. Priming (air bleeding)

• Bleed air.

Q: Does trouble symptom persist?

YES : 

Go to Step 11 .

NO : 

The procedure is complete.

STEP 11. M.U.T.-III actuator test.

• Refer to Actuator Test Reference Table 

P.13A-

574

.

a. Item 19: Suction control valve

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Replace the suction control valve. After 
replacing the suction control valve, learn the 
supply pump (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ).

STEP 12. Check suction control valve itself.

• Check suction control value itself (Refer to 

P.13A-596

).

Q: Is the check result normal?

TROUBLESHOOTING

DIESEL FUEL

13A-469

YES : 

Go to Step 13 .

NO : 

Replace the suction control valve. After 
replacing the suction control valve, learn the 
supply pump (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ).

STEP 13. M.U.T.-III data list.

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 63: Rail pressure sensor
b. Item 64: Rail pressure target

Q: Are the check results normal?

YES : 

Go to Step 15 .

NO : 

Go to Step 14 .

STEP 14. Replace the rail pressure sensor.

• Replace the common-rail assembly.

Q: Does trouble symptom persist?

YES : 

Go to Step 20 .

NO : 

The procedure is complete.

STEP 15. Check the waveforms of crank angle 
sensor and camshaft position sensor.

• Check the output waveforms on an oscilloscope 

(Refer to 

P.13A-586

).

Q: Is the check result normal?

YES : 

Go to Step 16 .

NO : 

Proceed to the inspection procedure by 
diagnosis code for the abnormal waveform 
(Refer to Inspection Chart for Diagnosis 
Code 

P.13A-21

).

STEP 16. Check compression pressure.

• Check compression pressure (Refer to GROUP 

11A 

− On-vehicle Service − Compression Pres-

sure Check ).

Q: Is the check result normal?

YES : 

Go to Step 17 .

NO : 

Check and repair the engine itself.

STEP 17. Check valve clearance.

• Check valve clearance (Refer to GROUP 11A − 

On-vehicle Service 

− Valve Clearance Check and 

Adjustment ).

Q: Is the check result normal?

YES : 

Go to Step 18 .

NO : 

Adjust the valve clearance.

STEP 18. M.U.T.-III actuator test.

• Refer to Actuator Test Reference Table 

P.13A-

574

.

a. Item 15: Injector No. 1
b. Item 16: Injector No. 2

c. Item 17: Injector No. 3

d. Item 18: Injector No. 4

Q: Are the check results normal?

YES : 

Go to Step 19 .

NO : 

Replace the injector at the failed cylinder. 
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 19. Check injector itself.

• Check injector itself (Refer to 

P.13A-595

).

Q: Is the check result normal?

YES : 

Go to Step 20 .

NO : 

Replace the injector at the failed cylinder. 
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 20. Check the trouble symptoms.

Q: Does trouble symptom persist?

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 Malfunction ).

TROUBLESHOOTING

DIESEL FUEL

13A-470

Inspection Procedure 9: Poor Acceleration

PROBABLE CAUSES

• Failed boost pressure control system

• Failed turbocharger

• Improper fuel used

• Fuel contaminated with foreign matter

• Injector leaking or clogged

• Failed injector

• Fuel injection learning failure

• Fuel filter clogged

• Fuel line leaking or clogged

• Failed fuel pressure limiter valve

• Failed rail pressure sensor

• Failed supply pump (suction control valve)

• Failed supply pump correction learning

• Failed EGR system operation

• Failed valve clearance adjustment

• Failed engine-ECU

• Compression pressure low

• Air cleaner clogged

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.

Q: Is the diagnosis code set?

YES : 

Inspection chart for diagnosis code (Refer 

to 

P.13A-21

).

NO : 

Go to Step 2 .

STEP 2. Check idling condition.

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Proceed to troubleshooting for improper 
idling (Refer to Inspection Procedure 7 

P.13A-466

).

STEP 3. Check injector identification code.

• Check injector identification code (Refer to 

GROUP 00 

− Precautions Before Service − Injec-

tor Identification code Registration Procedure ).

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Register the injector ID.

STEP 4. M.U.T.-III data list.

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 5: Barometric pressure sensor
b. Item 6: Manifold absolute pressure sensor

c. Item 7: Engine coolant temperature sensor

d. Item 8: EGR gas temperature sensor 

<Euro5>

e. Item 8: Intake air temperature sensor No. 2 

<Except Euro5>

f. Item 9: Accelerator pedal position sensor 

(main)

g. Item 10: Accelerator pedal position sensor 

(sub)

h. Item 13: Accelerator pedal position sensor 

(main) learned closed position

i. Item 16: EGR valve position sensor
j. Item 17: EGR valve target position

k. Item 21: Fuel temperature sensor

l. Item 43: Intake air temperature sensor No. 1

m. Item 45: Throttle position sensor

n. Item 46: Throttle position sensor learned 

closed position

Q: Are the check results normal?

YES : 

Go to Step 5 .

NO : 

Perform the diagnosis code classified check 
procedure for the sensor that has shown an 
abnormal data value (Refer to Inspection 
Chart for Diagnosis Code 

P.13A-21

).

STEP 5. Supply pump correction learning.

• Carry out the supply pump correction learning 

(Refer to GROUP 00 

− Precautions Before Serv-

ice 

− Supply Pump Correction Learning ).

Q: Does trouble symptom persist?

YES : 

Go to Step 6 .

NO : 

The procedure is complete.

STEP 6. Small injection quantity learning.

• Carry out the small injection quantity learning 

procedure (Refer to GROUP 00 

− Precautions 

Before Service 

− Small Injection Quantity Learn-

ing Procedure ).

Q: Does trouble symptom persist?

YES : 

Go to Step 7 .

NO : 

The procedure is complete.

STEP 7. Check air cleaner.

Q: Is the check result normal?

TROUBLESHOOTING

DIESEL FUEL

13A-471

YES : 

Go to Step 8 .

NO : 

Replace air cleaner.

STEP 8. Confirm the using fuel.

Q: Is the specified fuel being used?

YES : 

Go to Step 9 .

NO : 

Replace fuel.

STEP 9. Checking the turbocharging pressure.

• Check the turbocharging pressure (Refer to 

GROUP 15 

− On-vehicle Service − Turbocharger 

Supercharging Pressure Check ).

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace the failed item.

STEP 10. Check fuel supply line.

• Check for fuel leakage and clogging.

• Check fuel filter for clogging.

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Repair or replace the failed item.

STEP 11. Priming (air bleeding)

• Bleed air.

Q: Does trouble symptom persist?

YES : 

Go to Step 12 .

NO : 

The procedure is complete.

STEP 12. M.U.T.-III actuator test.

• Refer to Actuator Test Reference Table 

P.13A-

574

.

a. Item 19: Suction control valve

Q: Is the check result normal?

YES : 

Go to Step 13 .

NO : 

Replace the suction control valve. After 
replacing the suction control valve, learn the 
supply pump (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ).

STEP 13. Check suction control valve itself.

• Check suction control value itself (Refer to 

P.13A-596

).

Q: Is the check result normal?

YES : 

Go to Step 14 .

NO : 

Replace the suction control valve. After 
replacing the suction control valve, learn the 
supply pump (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ).

STEP 14. M.U.T.-III data list.

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 63: Rail pressure sensor
b. Item 64: Rail pressure target

Q: Are the check results normal?

YES : 

Go to Step 16 .

NO : 

Go to Step 15 .

STEP 15. Replace the rail pressure sensor.

• Replace the common-rail assembly.

Q: Does trouble symptom persist?

YES : 

Go to Step 20 .

NO : 

The procedure is complete.

STEP 16. Check the waveforms of crank angle 
sensor and camshaft position sensor.

• Check the output waveforms on an oscilloscope 

(Refer to 

P.13A-586

).

Q: Is the check result normal?

YES : 

Go to Step 17 .

NO : 

Proceed to the inspection procedure by 
diagnosis code for the abnormal waveform 
(Refer to Inspection Chart for Diagnosis 
Code 

P.13A-21

).

STEP 17. M.U.T.-III actuator test.

• Refer to Actuator Test Reference Table 

P.13A-

574

.

a. Item 15: Injector No. 1
b. Item 16: Injector No. 2

c. Item 17: Injector No. 3

d. Item 18: Injector No. 4

Q: Are the check results normal?

YES : 

Go to Step 18 .

NO : 

Replace the injector at the failed cylinder. 
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 ).

 

 

 

 

 

 

 

Content   ..  166  167  168  169   ..