Mitsubishi Eclipse. Manual - part 150

 

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Mitsubishi Eclipse. Manual - part 150

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-93

STEP 2. Measure the sensor output voltage at manifold 
absolute pressure sensor connector B-04 by backprobing.
(1) Do not disconnect the connector B-04.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 1 and ground by 

backprobing.

• When altitude is 0 m (0 foot), voltage should be 3.8 and 

4.2 volts.

• When altitude is 600 m (1,969 feet), voltage should be 

3.5 and 3.9 volts.

• When altitude is 1,200 m (3,937 feet), voltage should be 

3.3 and 3.7 volts.

• When altitude is 1,800 m (5,906 feet), voltage should be 

3.0 and 3.4 volts.

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

YES : Go to Step 3.
NO :  Go to Step 5.

AK300107

1

2

3

AB

CONNECTOR: B-04

B-04 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

3

2

1

AK203034

B-04 HARNESS 
CONNECTOR: 
HARNESS SIDE

AE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-94

STEP 3. Check connector B-04 at the manifold absolute 
pressure sensor and 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 4.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

AK300107

1

2

3

AB

CONNECTOR: B-04

B-04 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

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-95

STEP 4. Using scan tool MB991958, check data list item 95: 
Manifold Absolute Pressure Sensor.

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) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the data reading mode for item 

95, Manifold Absolute Pressure Sensor.

• When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).

• When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).

• When altitude is 1,200 m (3,937 feet), 88 kPa (26.0 

in.Hg).

• When altitude is 1,800 m (5,906 feet), 81 kPa (23.9 

in.Hg).

(4) Start the engine.

• When the engine is idling, 16 − 36 kPa (4.7 − 10.6 

in.Hg).

• When the engine is suddenly revved, manifold absolute 

pressure increases.

(5) 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 12.

STEP 5. Measure the sensor supply voltage at manifold 
absolute pressure sensor connector B-04 by backprobing.
(1) Do not disconnect the connector B-04.
(2) Turn the ignition switch to the "ON" position.

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

backprobing.

• Voltage should be between 4.8 and 5.2 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.8 and 5.2 volts?

YES : Go to Step 7.
NO :  Go to Step 6.

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

AK300107

1

2

3

AB

CONNECTOR: B-04

B-04 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

3

2

1

AK203036

B-04 HARNESS 
CONNECTOR: 
HARNESS SIDE

AE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-96

STEP 6. Check connector C-60 at ECM <M/T> or connector 
C-54 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Replace the ECM or PCM. Then go to Step 12.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

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

AK300412

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

C-54 (GR)

CONNECTOR: C-54 <A/T>

AB

HARNESS CONNECTOR:
COMPONENT SIDE

 

 

 

 

 

 

 

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