Mitsubishi Eclipse. Manual - part 435

 

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Mitsubishi Eclipse. Manual - part 435

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-283

STEP 3. Check the sensor output voltage at ECM 
connector C-62 <M/T> or PCM connector C-59 <A/T> by 
backprobing.
(1) Do not disconnect the connector C-62 <M/T> or C-59 

<A/T>.

(2) Start the engine and run at idle.

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

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-284

(3) Measure the voltage between terminal No. 74 and ground 

by backprobing.

• Warming up the engine. When the engine is 2,500 r/min, 

the output voltage should repeat 0 volt and 0.6 to 1.0 
volt alternately.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage normal?

YES : Go to Step 4.
NO :  Go to Step 6.

AK000242

71 72

73 74

78

80 81

79

82 83 84 85 86 87 88 89

75 76

91 92 93

94 95

96

98

99

97

AK000242AE

<M/T>

C-62 HARNESS 
CONNECTOR: 
HARNESS SIDE

77

90

100

AKX01536

7172 73 74

75 76 77

78 79 80 81 82 83 84 85 86 87 88 89
90 91

92 93 94

95 96

97 98

C-59 HARNESS 
CONNECTOR: 
HARNESS SIDE

AI

<A/T>

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-285

STEP 4. Check connector B-28 at right bank heated 
oxygen sensor (rear) 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 : Go to Step 5.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 15.

AK300429

1

2

3

4

RIGHT BANK 
HEATED OXYGEN
SENSOR (REAR)

CONNECTOR: B-28

AB

B-28 (GR)

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-286

STEP 5. Using scan tool MB991958, check data list item 69: 
Heated Oxygen Sensor Bank 1, Sensor 2 (right rear).

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item 

69, Heated Oxygen Sensor Bank 1, Sensor 2 (right rear).

• Warming up the engine. When the engine is revved, the 

output voltage should repeat 0 volt and 0.6 to 1.0 volt 
alternately.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use Troubleshooting/ 
Inspection Service Points 

P.00-6

.

NO :  Replace the ECM or PCM. 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

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

 

 

 

 

 

 

 

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