Mitsubishi L200. Manual - part 183

TROUBLESHOOTING

DIESEL FUEL

13A-528

DIAGNOSIS PROCEDURE

STEP 1. Connector check: C-10 joint connector.

Q: Is the check result normal?

YES : 

Go to Step 2 .

NO : 

Repair or replace the connector.

STEP 2. Perform voltage measurement at C-10 
joint connector.

• Disconnect connector, and measure at the har-

ness side.

• Ignition switch: ON

• Voltage between terminal No. 3 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5 .

NO : 

Go to Step 3 .

AKB00330

5 4 3

2 1

12

7 6

8

9

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11

AB

AB

Harness side connector

Connector: C-10
<L. H. drive vehicles>

<R. H. drive vehicles>

C-10 (GR)

C-10 (GR)

AKB00330

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2 1

12

7 6

8

9

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11

AB

AB

Harness side connector

Connector: C-10
<L. H. drive vehicles>

<R. H. drive vehicles>

C-10 (GR)

C-10 (GR)

TROUBLESHOOTING

DIESEL FUEL

13A-529

STEP 3. Connector check: C-103 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-10 (terminal 
No. 3) joint connector and C-103 (terminal No. 
125) engine-ECU connector.

NOTE: Before checking harness, check intermediate 
connector C-52 <L. H. drive vehicles>,  C-34 <R. H. 
drive vehicles>, and repair if necessary.

• Check output line for open/short circuit.

Q: Is the check result normal?

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

AKB00330

5 4 3

2 1

12

7 6

8

9

10

11

AB

AB

Harness side connector

Connector: C-10
<L. H. drive vehicles>

<R. H. drive vehicles>

C-10 (GR)

C-10 (GR)

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-530

YES : 

Replace the engine-ECU.

NO : 

Repair the damaged harness wire.

STEP 5. Connector check: C-103 engine-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair or replace the connector.

STEP 6. Check harness between C-10 (terminal 
No. 3) joint connector and C-103 (terminal No. 
125) engine-ECU connector.

NOTE: Before checking harness, check intermediate 
connector C-52 <L. H. drive vehicles>,  C-34 <R. H. 
drive vehicles>, and repair if necessary.

• Check output line for damage.

Q: Is the check result normal?

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

AKB00330

5 4 3

2 1

12

7 6

8

9

10

11

AB

AB

Harness side connector

Connector: C-10
<L. H. drive vehicles>

<R. H. drive vehicles>

C-10 (GR)

C-10 (GR)

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-531

YES : 

Go to Step 7.

NO : 

Repair the damaged harness wire.

STEP 7. Perform voltage measurement at C-103 
engine-ECU connector.

• Measure engine-ECU terminal voltage.

• Engine: Idling

• Voltage between terminal No. 125 and earth.

OK:

System voltage (when A/C is ON)
1 V or less (when A/C is OFF)

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

NO : 

Check A/C system (Refer to GROUP 55A 

− 

Troubleshooting 

− Check Chart for Trouble 

Symptoms  <Manual A/C>, GROUP 55B 

− 

Troubleshooting 

− Check Chart for Trouble 

Symptoms  <Automatic A/C>).

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