Mitsubishi L200. Manual - part 132

TROUBLESHOOTING

DIESEL FUEL

13A-324

STEP 8. Connector check: C-103 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 9 .

NO : 

Repair or replace the connector.

STEP 9. Check harness between A-152 (terminal 
No. 3) battery current sensor connector and C-
103 (terminal No. 155) engine-ECU connector.

• Check earthing line for open circuit and damage.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the damaged harness wire.

AKA00090

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C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AKB00274

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3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00090

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C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

TROUBLESHOOTING

DIESEL FUEL

13A-325

STEP 10. Connector check: C-103 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-152 (terminal 
No. 1) battery current sensor connector and C-
103 (terminal No. 148) engine-ECU connector.

• Check power supply line for damage.

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Repair the damaged harness wire.

AKA00090

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C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00090

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C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

TROUBLESHOOTING

DIESEL FUEL

13A-326

STEP 12. Check harness between A-152 (terminal 
No. 4) battery current sensor connector and C-
103 (terminal No. 138) engine-ECU connector.

• Check output line for open/short circuit and dam-

age.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the damaged harness wire.

Code No. P1625: Injection Quantity Compensation Value Error

FUNCTION

• Correction data of the injector built in the engine 

is written to the engine-ECU.

• The engine-ECU checks whether the correction 

data thus written is valid.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

Judgment Criterion

• An error is detected during three-side majority 

decision check or upper/lower limit check of an 
injector correction value.

AKB00274

1

3

2

4

A-152 (GR)

Harness side
connector

Connector: A-152

AB

AKA00090

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C-103 (B)

C-103 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-103

AB

TROUBLESHOOTING

DIESEL FUEL

13A-327

PROBABLE CAUSE

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Injector identification code data check

• Check whether injector identification code data is 

correctly written to the engine-ECU in M.U.T.-III.

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 : 

Go to Step 2 .

STEP 2. Rewrite the injector identification code 
data again.

• Rewrite the injector identification code data 

(Refer to GROUP 00

− Precautions Before Serv-

ice 

− Injector Identification Code Registration 

Procedure ).

• After rewriting the injector identification code data 

again, recheck for abnormal 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 : 

The check is end.

Code No. P1626: Injection Quantity Compensation Value Not Coding

FUNCTION

• The engine-ECU checks whether injector correc-

tion data is written to the engine-ECU.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

Judgment Criterion

• No record of writing injector correction data

PROBABLE CAUSE

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Write the injector identification code 
data.

• Write the injector identification code data (Refer 

to GROUP 00 

− Precautions Before Service − 

Injector Identification Code Registration Proce-
dure ).

• After writing the injector identification code data, 

recheck for abnormal 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 : 

The check is end.