Mitsubishi L200. Manual - part 130

TROUBLESHOOTING

DIESEL FUEL

13A-316

STEP 9. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace the connector.

STEP 10. Check harness between A-158 (terminal 
No. 1) No. 3 exhaust gas temperature sensor 
(DPF temperature) connector and C-105 (terminal 
No. 84) engine-ECU connector.

NOTE: Before checking harness, check intermediate 
connector A-28, and repair if necessary.

• Check earthing line for open circuit and damage.

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

AKB00278

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2

A-158 (B)

Connector: A-158

AB

Harness side
connector

No. 3 exhaust gas
temperature sensor
(DPF temperature)

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

TROUBLESHOOTING

DIESEL FUEL

13A-317

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

STEP 11. Connector check: C-105 engine-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Repair or replace the connector.

STEP 12. Check harness between A-158 (terminal 
No. 2) No. 3 exhaust gas temperature sensor 
(DPF temperature) connector and C-105 (terminal 
No. 60) engine-ECU connector.

NOTE: Before checking harness, check intermediate 
connector A-28, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

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

AKB00278

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2

A-158 (B)

Connector: A-158

AB

Harness side
connector

No. 3 exhaust gas
temperature sensor
(DPF temperature)

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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-318

Code No. P1497: DPF System Malfunction <Euro5>

FUNCTION

• The engine-ECU monitors the input signals from 

sensors to check if the DPF regeneration is exe-
cuted normally.

TROUBLE JUDGMENT

Check Condition

• On DPF regeneration

Judgement Criterion

• The DPF regeneration status continues for 30 

minutes or more.

Check Condition

• Ignition switch is in "ON" position

Judgement Criterion

• The regeneration with short interval continues for 

specified times.

PROBABLE CAUSES

• Failed No. 2 exhaust gas temperature sensor 

(catalyst temperature)

• Failed No. 3 exhaust gas temperature sensor 

(DPF temperature)

• Failed exhaust differential pressure sensor

• Failed exhaust differential pressure sensor ambi-

ent air temperature sensor

• Catalytic converter inactive

• The engine oil-containing ash is loaded to the 

DPF inside.

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list.

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 118: No. 2 exhaust gas temperature sen-

sor (catalyst temperature)

b. Item 119: No. 3 exhaust gas temperature sen-

sor (DPF temperature)

c. Item 120: Exhaust differential pressure sensor

Q: Are the check results normal?

YES : 

Go to Step 2 .

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 2. M.U.T.-III data list.

• Item 208: Short interval DPF regeneration count

OK: 10 or more

Q: Is the short interval DPF regeneration counting 10 

or more?
YES : 

Go to Step 4 .

NO : 

Go to Step 3 .

STEP 3. Forcible DPF regeneration execution

• Initialise the DPF-related parts, and then delete 

the diagnosis code (Refer to GROUP 00 

− Pre-

cautions before Service 

− Initialisation Procedure 

for Learning Value in Diesel Particulate Filter 
(DPF) System ).

a. Item 42: DPF system malfunction service

• Carry out the forcible DPF regeneration (Refer to 

GROUP 17 

− Emission Control − Diesel Particu-

late Filter (DPF) System 

− Forcible DPF Regen-

eration ).

Q: Is the diagnosis code P0420 or P1497 set?

YES : 

 Replace the catalytic converter. When the 

catalytic converter is replaced, initialise the 
learning value (Refer to GROUP 00 

− 

Precautions before Service 

− Initialisation 

Procedure for Learning Value in Diesel 
Particulate Filter (DPF) System ). On 
completion, carry out the forcible DPF 
regeneration (Refer to GROUP 17 

− 

Emission Control 

− Diesel Particulate Filter 

(DPF) System 

− Forcible DPF Regeneration 

).

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, 
carry out the forcible DPF regeneration. 
(Refer to GROUP 17 

− Emission Control − 

Diesel Particulate Filter (DPF) System 

− 

Forcible DPF Regeneration ).

TROUBLESHOOTING

DIESEL FUEL

13A-319

STEP 4. Forcible DPF regeneration execution

• Initialise the DPF-related parts, and then delete 

the diagnosis code (Refer to GROUP 00 

− Pre-

cautions before Service 

− Initialisation Procedure 

for Learning Value in Diesel Particulate Filter 
(DPF) System ).

a. Item 42: DPF system malfunction service

• Carry out the forcible DPF regeneration 2 times 

(Refer to GROUP 17 

− Emission Control − Diesel 

Particulate Filter (DPF) System 

− Forcible DPF 

Regeneration ).

NOTE: Carry out the DPF regeneration 2 times 

because the assumption of the accumulated 
amount of the DPF is not stable.

• M.U.T.-III data list

a. Item 156: Soot loading by differential pressure

OK: 3 g/L or less

Q: Is the check result normal?

YES : 

Proceed to troubleshooting for black smoke 

(Refer to Inspection Procedure 13 

P.13A-

479

).

NO : 

Replace the DPF. When the DPF is 
replaced, initialise the learning value (Refer 
to GROUP 00 

− Precautions Before Service 

− Initialisation Procedure For Learning 
Value in Diesel Particulate Filter (DPF) 
System ).

Code No. P1498: Excessive PM Accumulated in DPF <Euro5>

FUNCTION

• The engine-ECU monitors the input signals from 

sensors to estimate the PM amount loaded to the 
DPF inside.

• If the PM is loaded more than the specified 

amount, the DPF regeneration is automatically 
executed under certain conditions in order to 
eliminate the PM.

• If the PM is excessively loaded, the engine-ECU 

does not execute the automatic DPF regenera-
tion. It makes the engine warning lamp illuminate 
and the DPF lamp blink.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

Judgement Criterion

• Driving distance exceeds the specified value after 

the last DPF regeneration.

PROBABLE CAUSE

• The PM is abnormally loaded to the DPF inside.

DIAGNOSIS PROCEDURE

STEP 1. Forcible DPF regeneration execution

• Carry out the forcible DPF regeneration (Refer to 

GROUP 17 

− Emission Control − Diesel Particu-

late Filter (DPF) System 

− Forcible DPF Regen-

eration ).

Q: Is the diagnosis code output?

YES : 

Inspection chart for diagnosis code (Refer 

to 

P.13A-21

).

NO : 

Check end.

Code No. P1499: Abnormally high DPF temperature <Euro5>

FUNCTION

• The DPF may be have melting damage if the 

temperature exceeds the specified value.

• The engine-ECU monitors the signals from No. 3 

exhaust gas temperature sensor (DPF tempera-
ture) to check if the DPF is under the specified 
temperature.

TROUBLE JUDGMENT

Check Condition

• On DPF regeneration