Mitsubishi Outlander (2003+). Manual - part 103

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-275

STEP 11. Check harness between A-02 (terminal 
No. 1) A/C pressure sensor connector and C-137 
(terminal No. 92) engine-ECU connector.

NOTE: Before checking harness, check intermediate 
connectors C-105 and C-116, and repair if neces-
sary.

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 A-02 A/C pressure 
sensor connector.

œ

Use special tool test harness (MB991348) to con-
nect connector, and measure at pick-up harness.

œ

Ignition switch: ON

œ

Voltage between terminal No. 3 and earth.

OK: 4.9 

-

 5.1 V

Q: Is the check result normal?

YES : 

Go to Step 14 .

NO : 

Go to Step 13 .

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

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

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-276

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

Q: Is the check result normal?

YES : 

Check intermediate connector A-14, and 

repair if necessary. If intermediate 
connector is normal, check and repair 
harness between A-02 (terminal No. 3) A/C 
pressure sensor connector and C-137 
(terminal No. 81) engine-ECU connector.

œ

Check power line for damage.

NO : 

Repair.

STEP 14. Measure voltage at A-02 A/C pressure 
sensor connector.

œ

Use special tool test harness (MB991348) to con-
nect connector, and measure at pick-up harness.

œ

Ignition switch: ON

œ

Voltage between terminal No. 1 and earth.

OK: 0.5 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

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MFI)

13A-277

STEP 15. Connector check: C-137 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Check intermediate connectors C-105 and 

C-116, and repair if necessary. If 
intermediate connectors are normal, check 
and repair harness between A-02 (terminal 
No. 1) A/C pressure sensor connector and 
C-137 (terminal No. 92) engine-ECU 
connector.

œ

Check earthing line for damage.

NO : 

Repair.

STEP 16. Measure voltage at A-02 A/C pressure 
sensor connector.

œ

Use special tool test harness (MB991348) to con-
nect connector, and measure at pick-up harness.

œ

Engine: Running at idle

œ

A/C switch: ON

œ

Voltage between terminal No. 2 and earth.

OK: 

1.8 

-

 2.0 V (A/C refrigerant pressure: 1 kPa)

3.23 

-

 3.57 V (A/C refrigerant pressure: 2 kPa)

Q: Is the check result normal?

YES : 

Go to Step 19 .

NO : 

Go to Step 17 .

STEP 17. Connector check: C-135 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 18 .

NO : 

Repair.

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

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

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-278

STEP 18. Check harness between A-02 (terminal 
No. 2) A/C pressure sensor connector and C-135 
(terminal No. 42) engine-A/T-ECU connector.

NOTE: Before checking harness, check intermediate 
connectors C-105 and C-116, and repair if neces-
sary.

œ

Check output line for short circuit and damage.

Q: Is the check result normal?

YES : 

Replace A/C pressure sensor.

NO : 

Repair.

STEP 19. Measure voltage at C-135 engine-ECU 
connector.

œ

Measure engine-ECU terminal voltage.

œ

Engine: Running at idle

œ

A/C switch: ON

œ

Voltage between terminal No. 42 and earth.

OK: 

1.8 

-

 2.0 V (A/C refrigerant pressure: 1 kPa)

3.23 

-

 3.57 V (A/C refrigerant pressure: 2 kPa)

Q: Is the check result normal?

YES : 

Go to Step 21 .

NO : 

Go to Step 20 .

AK300340

1

2

3

Harness side
connector

A-02 (B)

AB

Connector: A-02

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

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