Mitsubishi L200. Manual - part 146

TROUBLESHOOTING

DIESEL FUEL

13A-380

STEP 7. Check harness between C-105 (terminal 
No. 27) engine-ECU connector and A-129 
(terminal No. 1) No. 4 injector connector.

• Check earthing line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the damaged harness wire.

STEP 8. Check harness between C-105 (terminal 
No. 1) engine-ECU connector and A-42 (terminal 
No. 2) No. 1 injector connector. 

• Check power supply line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

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

AKA00189

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2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

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

AKA00186

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2

Connector: A-42

A-42 (GR)

Harness side 
connector

AB

1

2

TROUBLESHOOTING

DIESEL FUEL

13A-381

STEP 9. Check harness between C-105 (terminal 
No. 25) 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 10.

NO : 

Repair the damaged harness wire.

STEP 10. Check harness between C-105 (terminal 
No. 25) 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 11.

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

AKA00187

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2

Connector: A-41

A-41 (GR)

Harness side 
connector

AB

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

AKA00188

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2

Connector: A-130

A-130 (GR)

Harness side 
connector

AB

TROUBLESHOOTING

DIESEL FUEL

13A-382

STEP 11. Check harness between C-105 (terminal 
No. 1) engine-ECU connector and A-129 (terminal 
No. 2) No. 4 injector connector. 

• Check power supply line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the damaged harness wire.

STEP 12. 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 ).

NO : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

Code No. P2148: Injector Common 1 (Cylinder No. 1 and No. 4) Circuit Battery Short <Euro5>

OPERATION

• Refer to Code No. P0201: No. 1 Injector Circuit 

Malfunction 

P.13A-158

.

• Refer to Code No. P0204: No. 4 Injector Circuit 

Malfunction 

P.13A-173

. <Euro5>

FUNCTION

• The engine-ECU monitors voltage application to 

the injector during no injector energization to 
detect errors in the No. 1 and No. 4 injector drive 
circuit.

TROUBLE JUDGMENT

Check Condition

• Ignition switch is in "ON" position.

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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

AKA00189

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2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

TROUBLESHOOTING

DIESEL FUEL

13A-383

Judgment Criterion

• Short-circuit to the battery is detected in the injec-

tor drive circuit.

PROBABLE CAUSES

• Short circuit in injector circuit or loose connector 

contact

• Failed No. 1 injector

• Failed No. 4 injector

• Failed engine-ECU

DIAGNOSIS PROCEDURE

WARNING

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 volt-
age.

STEP 1. Connector check: A-42 No. 1 injector 
connector and A-129 No. 4 injector connector.

Q: Are the check results normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace the connector.

STEP 2. Connector check: C-105 engine-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

AKA00190

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Connectors: A-42, A-129

A-42 (GR)

A-129 (GR)

Harness side 
connector

AB

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