Mitsubishi L200. Manual - part 77

TROUBLESHOOTING

DIESEL FUEL

13A-104

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-542

a. Item 8: EGR gas temperature sensor

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 : 

Go to Step 2 .

STEP 2. Connector check: A-157 EGR gas 
temperature sensor connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

STEP 3. Check EGR gas temperature sensor 
itself.

• Check EGR gas temperature sensor itself (Refer 

to GROUP 17 

− Emission Control − Exhaust Gas 

Recirculation (EGR) System 

− EGR Gas Temper-

ature Sensor Check ).

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Replace the EGR gas temperature sensor.

STEP 4. Perform voltage measurement at A-157 
EGR gas temperature sensor connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 2 and earth.

OK: 4.5 

− 4.9 V

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Go to Step 5 .

STEP 5. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6 .

NO : 

Repair or replace the connector.

AKB00263

1

2

AB

A-157 (B)

Harness side
connector

Connector: A-157

AKB00263

1

2

AB

A-157 (B)

Harness side
connector

Connector: A-157

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

TROUBLESHOOTING

DIESEL FUEL

13A-105

STEP 6. Check harness between A-157 (terminal 
No. 2) EGR gas temperature sensor connector 
and C-105 (terminal No. 36) engine-ECU 
connector.

• Check output line for open circuit.

Q: Is the check result normal? 

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

STEP 7. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-542

a. Item 8: EGR gas temperature sensor

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 : 

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 ).

STEP 8. Perform resistance measurement at A-
157 EGR gas temperature sensor connector.

• Disconnect connector, and measure at harness 

side.

• Resistance between terminal No. 1 and earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Go to Step 9 .

AKB00263

1

2

AB

A-157 (B)

Harness side
connector

Connector: A-157

AKA00089

1

2

3

4

5

6

7

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95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

AKB00263

1

2

AB

A-157 (B)

Harness side
connector

Connector: A-157

TROUBLESHOOTING

DIESEL FUEL

13A-106

STEP 9. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 10 .

NO : 

Repair or replace the connector.

STEP 10. Check harness between A-157 (terminal 
No. 1) EGR gas temperature sensor connector 
and C-105 (terminal No. 30) engine-ECU 
connector.

• Check earthing line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

AKA00089

1

2

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5

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95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

AKB00263

1

2

AB

A-157 (B)

Harness side
connector

Connector: A-157

AKA00089

1

2

3

4

5

6

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96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

TROUBLESHOOTING

DIESEL FUEL

13A-107

STEP 11. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 12 .

NO : 

Repair or replace the connector.

STEP 12. Check harness between A-157 (terminal 
No. 2) EGR gas temperature sensor connector 
and C-105 (terminal No. 36) engine-ECU 
connector.

• Check output line for damage.

Q: Is the check result normal? 

YES : 

Go to Step 7 .

NO : 

Repair the damaged harness wire.

AKA00089

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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79

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90

91

92

93

94

95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

AKB00263

1

2

AB

A-157 (B)

Harness side
connector

Connector: A-157

AKA00089

1

2

3

4

5

6

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90

91

92

93

94

95

96

C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB