Mitsubishi L200. Manual - part 63

TROUBLESHOOTING

DIESEL FUEL

13A-48

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Item 8: Intake air temperature sensor No. 2

OK: At ambient temperature (atmospheric 
temperature) or equivalent.

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-136 intake air 
temperature sensor No. 2 connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

STEP 3. Check intake air temperature sensor No. 
2 itself.

• Check intake air temperature sensor No. 2 itself 

(Refer to 

P.13A-595

).

Q: Is the check result normal?

YES : 

Go to Step 4 .

NO : 

Replace the intake air temperature sensor 
No. 2.

STEP 4. Perform voltage measurement at A-136 
intake air temperature sensor No. 2 connector.

• Disconnect connector, and measure at harness 

side.

• Ignition switch: ON

• Voltage between terminal No. 1 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.

AK501317

1

2

AB

A-136 (B)

Harness side 
connector

Connector: A-136

AK501317

1

2

AB

A-136 (B)

Harness side 
connector

Connector: A-136

AKA00089

1

2

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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-49

STEP 6. Check harness between A-136 (terminal 
No. 1) intake air temperature sensor No. 2 
connector and C-105 (terminal No. 38) engine-
ECU connector.

• Check output line for short 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

• Item 8: Intake air temperature sensor No. 2

OK: At ambient temperature (atmospheric 
temperature) or equivalent.

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 ).

STEP 8. Perform resistance measurement at A-
136 intake air temperature sensor No. 2 
connector.

• Disconnect connector, and measure at harness 

side.

• Resistance between terminal No. 2 and earth.

OK: Continuity (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 11 .

NO : 

Go to Step 9 .

AK501317

1

2

AB

A-136 (B)

Harness side 
connector

Connector: A-136

AKA00089

1

2

3

4

5

6

7

8

9

10

11

12

13

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81

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84

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86

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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

AK501317

1

2

AB

A-136 (B)

Harness side 
connector

Connector: A-136

TROUBLESHOOTING

DIESEL FUEL

13A-50

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-136 (terminal 
No. 2) intake air temperature sensor No. 2 
connector and C-105 (terminal No. 32) engine-
ECU connector.

• Check earthing 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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16

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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

AK501317

1

2

AB

A-136 (B)

Harness side 
connector

Connector: A-136

AKA00089

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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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-51

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-136 (terminal 
No. 1) intake air temperature sensor No. 2 
connector and C-105 (terminal No. 38) 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

15

16

17

18

19

20

21

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75

76

77

78

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

AK501317

1

2

AB

A-136 (B)

Harness side 
connector

Connector: A-136

AKA00089

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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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