Mitsubishi Eclipse. Manual - part 337

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-841

STEP 3. Measure the power supply voltage at MFI relay 
harness side connector A-18X.
(1) Disconnect the connector A-18X and measure at the 

harness side.

(2) Measure the voltage between terminal No. 1, No. 2 and 

ground.

• Voltage should be battery positive voltage.

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Go to Step 4.
NO :  Check harness connector C-07 at intermediate 

connector for damage, and repair or replace as 
required. Refer to, GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. If intermediate connector is in 

good condition, repair harness wire between relay 
box (9) and MFI relay connector A-18X (terminal No. 
1, No. 2) because of open circuit. Then confirm that 
the malfunction symptom is eliminated.

AK300454

2

1

3

4

CONNECTOR: A-18X

AB

A-18X

HARNESS CONNECTOR:
COMPONENT SIDE

2

1

3

4

AK203258

B-18X HARNESS 
CONNECTOR: 
COMPONENT SIDE

AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-842

STEP 4. Check connector C-60 at ECM <M/T> or connector 
C-57 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Go to Step 5.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300735

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-57 <A/T>

C-57 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-843

STEP 5. Measure the ignition switch-IG signal voltage at 
ECM harness side connector C-60 <M/T> or PCM harness 
side connector C-57 <A/T>.
(1) Disconnect the connector C-60 <M/T> or C-57 <A/T> and 

measure at the harness side.

(2) Turn the ignition switch to the "ON" position.

AK300415

82

78

8180

89

90

91

92

79

87

71

74 73 72

76 75

77

85

88

83

84

86

CONNECTOR: C-60 <M/T>

AB

C-60 (G)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300735

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-57 <A/T>

C-57 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-844

(3) Measure the voltage between terminal No. 82 <M/T> or No. 

98 <A/T> and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Go to Step 6.
NO :  Check harness connector C-07, C-89, C-111 and 

C-112 at intermediate connector for damage, and 
repair or replace as required. Refer to, GROUP 00E, 
Harness Connector Inspection 

P.00E-2

. If 

intermediate connectors are in good condition, repair 
harness wire between ignition switch connector C-87 
(terminal No. 2) and ECM connector C-60 (terminal 
No. 82) <M/T> or PCM connector C-57 (terminal No. 
98) <A/T> because of open circuit. Then confirm that 
the malfunction symptom is eliminated.

AK000402 AI

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

<M/T>

C-60 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AKX01435

77 76
89 88
98

75
87

97

86
96

85
95

84

82

83
94 93

81
92

80

74 73 72 71

79 78
91 90

AN

<A/T>

C-57  HARNESS 
CONNECTOR: 
COMPONENT SIDE