Mitsubishi L200. Manual - part 161

TROUBLESHOOTING

DIESEL FUEL

13A-440

Inspection Procedure 3: The Engine Warning Lamp Remains Illuminating and Never Goes Out or Is 
Blinking.

AKB00284

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7.5A

C-207

C-209

C-112

B-W

B-W

Engine
warning
lamp

Combination meter

4

6

12

15

J/B

C-112

C-111

MU801586

36

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Grey
R: Red  P: Pink  V: Violet  PU: Purple  SI: Silver

L-B

2

R

IG2

ST

LOCK

ACC

IG1

Ignition switch

C-307

R-W

R-W

Engine-ECU

C-53*¹ or
C-35*²

C-105

C-111

63

46

23

J/C (5)

C-132

Engine Warning Lamp (check engine lamp) Circuit

NOTE

*1: L.H. drive vehicles
*2: R.H. drive vehicles

AB

TROUBLESHOOTING

DIESEL FUEL

13A-441

OPERATION

• Engine-ECU has detected failed sensor or failed 

actuator. Or failure is possibly caused by short 
circuit or other faults.

PROBABLE CAUSES

• Damaged connector (Engine-ECU connector, 

combination meter connector)

• Damaged harness (Short circuit between engine-

ECU and combination meter)

• Failed combination meter

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the illuminating condition of the 
engine warning lamp.

Q: Is the engine warning lamp blinking?

YES : 

Carry out the small injection quantity 

learning procedure (Refer to GROUP 00 

− 

Precautions Before Service 

− Small 

Injection Quantity Learning Procedure ).

NO : 

Go to Step 2 .

STEP 2. 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 3 .

STEP 3. Connector check: C-105 engine-ECU 
connector and C-111 combination meter 
connector

Q: Are the check results normal?

YES : 

Go to Step 4 .

NO : 

Repair or replace.

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

AK700806

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Harness side connector 

C-111

C-111

Connector: C-111

<R.H. drive vehicles>

<L.H. drive vehicles>

AB

TROUBLESHOOTING

DIESEL FUEL

13A-442

STEP 4. Check combination meter.

• Ignition switch: ON

• Disconnect C-111 combination meter connector

Q: Does the engine warning lamp go out?

YES : 

Go to Step 5 .

NO : 

Check combination meter (Refer to GROUP 
54A 

− Combination Meter − Check Chart for 

Trouble Symptoms ).

AK700806

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Harness side connector 

C-111

C-111

Connector: C-111

<R.H. drive vehicles>

<L.H. drive vehicles>

AB

TROUBLESHOOTING

DIESEL FUEL

13A-443

STEP 5. Perform resistance measurement for 
short circuit at C-105 engine-ECU connector. 

• Disconnect connector, and measure at harness 

side.

• Disconnect C-111 combination meter connector.

• Voltage between terminal No. 46 and earth.

OK: 1 k

Ω or more

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair the harness wire.

STEP 6. 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 7 .

NO : 

Register the injector ID.

STEP 7. 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 : 

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 procedure is complete.

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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

AK700806

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Harness side connector 

C-111

C-111

Connector: C-111

<R.H. drive vehicles>

<L.H. drive vehicles>

AB