Mitsubishi Outlander (2003+). Manual — part 41

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-27

STEP 7. Check harness between B-08 (terminal
No. 1) air flow sensor connector and C-137
(terminal No. 81) engine-ECU connector.

œ

Check power supply line for short circuit.

Q: Is the check result normal?

YES :

Go to Step 8 .

NO :

Repair.

STEP 8. MUT-II data list

œ

Refer to Data list reference table

3

13A

 .

a. Item No. 25: Barometric pressure sensor

Q: Is the check result normal?

YES :

Intermittent malfunction (Refer to GROUP

00

-

How to Use

Troubleshooting/Inspection Service Points

3

00

).

NO :

Replace engine-ECU.

STEP 9. Measure voltage at B-08 air flow sensor
connector.

œ

Disconnect connector, and measure at harness
side.

œ

Voltage between terminal No. 5 and earth.

OK: 2

W

or less

Q: Is the check result normal?

YES :

Go to Step 12 .

NO :

Go to Step 10 .

STEP 10. Connector check: C-135 engine-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 11 .

NO :

Repair.

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

AK300254

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

AB

CONNECTOR: C-137

C-137

Harness side connector

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

AK300256

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

AB

CONNECTOR: C-135

C-135

Harness side connector

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-28

STEP 11. Check harness between B-08 (terminal
No. 5) air flow sensor connector and C-135
(terminal No. 40) engine-ECU connector.

NOTE: Before checking harness, check intermediate
connector C-16, and repair if necessary.

œ

Check earthing line for open circuit or damage.

Q: Is the check result normal?

YES :

Go to Step 8 .

NO :

Repair.

STEP 12. Measure voltage at B-08 air flow sensor
connector.

œ

Use special tool test harness (MB991709) to con-
nect only terminal No. 1, No. 2 and No. 5, and
then measure at pick-up harness.

œ

Ignition switch: ON

œ

Voltage between terminal No. 1 and earth.

OK: 4.9

-

5.1 V

Q: Is the check result normal?

YES :

Go to Step 14 .

NO :

Go to Step 13 .

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

AK300256

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

AB

CONNECTOR: C-135

C-135

Harness side connector

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-29

STEP 13. Connector check: C-137 engine-ECU
connector

Q: Is the check result normal?

YES :

Check and repair harness between B-08

(terminal No. 1) air flow sensor connector
and C-137 (terminal No. 81) engine-ECU
connector.

œ

Check power supply line for damage.

NO :

Repair.

STEP 14. Measure voltage at B-08 air flow sensor
connector.

œ

Use special tool test harness (MB991709) to con-
nect only terminal No. 1, No. 2 and No. 5, and
then measure at pick-up harness.

œ

Ignition switch: ON

œ

Voltage between terminal No. 5 and earth.

OK: 0.5 V or less

Q: Is the check result normal?

YES :

Go to Step 16 .

NO :

Go to Step 15 .

AK300254

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

AB

CONNECTOR: C-137

C-137

Harness side connector

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-30

STEP 15. Connector check: C-135 engine-ECU
connector

Q: Is the check result normal?

YES :

Check intermediate connector C-16, and

repair if necessary. If intermediate
connector is normal, check and repair
harness between B-08 (terminal No. 5) air
flow sensor connector and C-135 (terminal
No. 40) engine-ECU connector.

œ

Check earthing line for damage.

NO :

Repair.

STEP 16. Measure voltage at B-08 air flow sensor
connector.

œ

Use special tool test harness (MB991709) to con-
nect only terminal No. 1, No. 2 and No. 5, and
then measure at pick-up harness.

œ

Ignition switch: ON

œ

Voltage between terminal No. 2 and earth.

OK:

Altitude 0m: 3.8

-

4.2 V

Altitude 600m: 3.5

-

3.9 V

Altitude 1,200m: 3.3

-

3.7 V

Altitude 1,800m: 3.0

-

3.4 V

Q: Is the check result normal?

YES :

Go to Step 19 .

NO :

Go to Step 17 .

STEP 17. Connector check: C-137 engine-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 18 .

NO :

Repair.

AK300256

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

AB

CONNECTOR: C-135

C-135

Harness side connector

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

AK300253

3

4

5

1

2

6

7

AB

Harness side connector

B-08 (B)

Connector: B-08

AK300254

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

AB

CONNECTOR: C-137

C-137

Harness side connector