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

1

2

3

4

5

6

7

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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

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

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

8

9

10

11

12

13

14

15

16

17

18

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72

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48

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76

77

78

79

80

81

82

83

84

85

86

87

88

89

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

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

3

4

5

6

7

8

9

10

11

12

13

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15

16

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76

77

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79

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81

82

83

84

85

86

87

88

89

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

7

8

9

10

11

12

13

14

15

16

17

18

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79

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81

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84

85

86

87

88

89

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

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

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79

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81

82

83

84

85

86

87

88

89

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

7

8

9

10

11

12

13

14

15

16

17

18

19

20

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30

31

32

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37

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89

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

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