Mitsubishi Eclipse. Manual - part 420

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-223

STEP 6. Check connector B-27 at right bank heated 
oxygen sensor (front) and connector C-62 at ECM <M/T> or 
connector C-59 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Repair harness wire between right bank heated 

oxygen sensor (front) connector B-27 (terminal No. 4) 
and ECM connector C-62 (terminal No. 72) <M/T> or 
PCM connector C-59 (terminal No. 72) <A/T> 
because of open circuit or harness damage. Then go 
to Step 15.

NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 15.

AK300409

1

2

3

4

RIGHT BANK 
HEATED OXYGEN
SENSOR (FRONT)

AB

B-27 (B)

CONNECTOR: B-27

HARNESS CONNECTOR:
COMPONENT SIDE

AK300460

98

78

71

88

89

76

77

72
79
91

73
80

74

75

81
92

82

83

93

84

85

94

86

87

95

96

90

97

CONNECTOR: C-59 <A/T>

C-59 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-224

STEP 7. Check connector B-27 at right bank heated 
oxygen sensor (front) for damage.
Q: Is the connector in good condition?

YES : Go to Step 8.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 15.

AK300445

80

87

81

94

85

82

84

93

86

98

99

74

92

73

83

88

91

95

97 96

100

89

78

71

90

76

77

75

72
79

CONNECTOR: C-62 <M/T>

C-62 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300409

1

2

3

4

RIGHT BANK 
HEATED OXYGEN
SENSOR (FRONT)

AB

B-27 (B)

CONNECTOR: B-27

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-225

STEP 8. Check the continuity at right bank heated oxygen 
sensor (front) harness side connector B-27.
(1) Disconnect the connector B-27 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 2 and 

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 11.
NO :  Go to Step 9.

AK300409

1

2

3

4

RIGHT BANK 
HEATED OXYGEN
SENSOR (FRONT)

AB

B-27 (B)

CONNECTOR: B-27

HARNESS CONNECTOR:
COMPONENT SIDE

AK000239BG

B-27 HARNESS 
CONNECTOR: 
COMPONENT SIDE

2 1

4 3

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-226

STEP 9. Check connector C-58 at ECM <M/T> or connector 
C-55 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Go to Step 10.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 15.

AK300462

42

43

48

49

50

51

52

53

54

55

56

57

46 45 44

58

59

60

61

62

63

64

65

66

47

41

CONNECTOR: C-55 <A/T>

C-55 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300748

65

43
50

42
49

41
48
60

61

64

46

47

58

59

67

68

45

56
66

52 51

44

53

62

54

63

57

55

CONNECTOR: C-58 <M/T>

AB

C-58 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE