Mitsubishi L200. Manual - part 143

 

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Mitsubishi L200. Manual - part 143

 

 

TROUBLESHOOTING

DIESEL FUEL

13A-368

STEP 4. 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 open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Repair the damaged harness wire.

STEP 5. Check harness between C-105 (terminal 
No. 25) engine-ECU connector and A-129 
(terminal No. 2) No. 4 injector connector.

• Check power supply line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the damaged harness wire.

STEP 6. Check harness between C-105 (terminal 
No. 2) engine-ECU connector and A-42 (terminal 
No. 1) No. 1 injector connector.

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

1

2

Connector: A-42

A-42 (GR)

Harness side 
connector

AB

1

2

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

1

2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

TROUBLESHOOTING

DIESEL FUEL

13A-369

• Check earthing line for open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

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 open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Repair the damaged harness wire.

STEP 8. 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 output.

Q: Is the diagnosis code set?

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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

1

2

Connector: A-42

A-42 (GR)

Harness side 
connector

AB

1

2

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

1

2

Connector: A-129

Harness side 
connector

AB

A-129 (GR)

TROUBLESHOOTING

DIESEL FUEL

13A-370

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 ).

Code No. P2146: Injector Common 1 (cylinder No. 1 and No. 4) Circuit Open <Except Euro5>

OPERATION

• Driving power is supplied from the engine-ECU 

(terminal No. 1) to the No. 1 injector terminal (ter-
minal No. 2) and No. 4 injector (terminal No. 2).

FUNCTION

• The engine-ECU monitors peak current from the 

No. 1 and No. 4 injector drive circuits.

TROUBLE JUDGMENT

Check Conditions

• Ignition switch is in "ON" position.

• Except during the engine cranking period

• Battery positive voltage is 8 V or more.

Judgment Criterion

• When the peak current is not detected in injector 

circuits No. 1 and No. 4

PROBABLE CAUSES

• Failed No. 1 injector

• Failed No. 4 injector

• Open/short circuit in No. 1 and No. 4 injector cir-

cuit or loose connector contact

• 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. Check Injector itself

• Check No. 1 injector and No. 4 injector itself 

(Refer to 

P.13A-595

).

Q: Is the check result normal?

AKA00190

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Connectors: A-42, A-129

A-42 (GR)

A-129 (GR)

Harness side 
connector

AB

TROUBLESHOOTING

DIESEL FUEL

13A-371

YES : 

Go to Step 3 .

NO : 

Replace the 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. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Repair or replace the connector.

STEP 4. 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 open/short circuit.

Q: Is the check result normal?

YES : 

Go to Step 5 .

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

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

1

2

Connector: A-42

A-42 (GR)

Harness side 
connector

AB

1

2

 

 

 

 

 

 

 

Content   ..  141  142  143  144   ..