Mitsubishi L200. Manual - part 160

TROUBLESHOOTING

DIESEL FUEL

13A-436

STEP 4. Check for open circuit between 
diagnosis connector C-22 and earth.

• Disconnect connector.

• Check open circuit between terminal No. 4 and 

earth also between terminal No. 5 and earth.

Q: Is the check result normal?

YES : 

Refer to M.U.T.-III User’ s Manual 

− 

Troubleshooting Procedures.

NO : 

Repair harness between diagnosis 
connector and body earth.

AK700805

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12

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10

1516

14

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9

7 8

C-22 (B)

Connector: C-22

<R.H. drive vehicles>

C-22 (B)

AB

Harness side connector

<L.H. drive vehicles>

TROUBLESHOOTING

DIESEL FUEL

13A-437

Inspection Procedure 2: The Engine Warning Lamp Does Not Illuminate Right after the Ignition Switch 
Is Turned the "ON" Position

AKB00284

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58

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59

51

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4 5 6

15

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-438

OPERATION

• Engine-ECU turn on engine warning lamp for 5 

seconds to check for burnt-out bulb immediately 
after ignition switch is turned to ON.

PROBABLE CAUSES

• Damaged connector (Engine-ECU connector, 

combination meter connector)

• Damaged harness (Open circuit between engine-

ECU and combination meter)

• Failed combination meter

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check indicator illumination.

Q: Does an indicator other than the engine warning 

lamp illuminate?
YES : 

Go to Step 2 .

NO : 

Inspect combination meter and related 
circuits (Refer to GROUP 54A 

− 

Combination Meter 

− Check Chart for 

Trouble Symptoms ).

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

62

64

61 60 59 58

63

57

53

54

55

52 51

56

Harness side connector 

C-111

C-111

Connector: C-111

<R.H. drive vehicles>

<L.H. drive vehicles>

AB

TROUBLESHOOTING

DIESEL FUEL

13A-439

STEP 4. Perform resistance measurement for 
open circuit at between C-105 engine-ECU 
connector and C-111 combination meter 
connector.

• Disconnect C-105 engine-ECU connector and C-

111 combination meter connector, and measure 
resistance at the wiring harness.

• Resistance between C-105 engine-ECU connec-

tor terminal No. 46 and C-111 combination con-
nector terminal No. 63.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Check the intermediate connector C-53 <L. 
H. drive vehicles>, C-35 <R. H. drive 
vehicles>, and repair if necessary. If 
intermediate connector is normal, repair the 
harness wire.

STEP 5. Check the trouble 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 : 

Intermittent malfunction (Refer to GROUP 
00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunction ).

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

62

64

61 60 59 58

63

57

53

54

55

52 51

56

Harness side connector 

C-111

C-111

Connector: C-111

<R.H. drive vehicles>

<L.H. drive vehicles>

AB