Mitsubishi Eclipse. Manual - part 338

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-845

STEP 6. Measure the backup power supply voltage at ECM 
harness side connector C-60 <M/T> or PCM harness side 
connector C-54 <A/T>.
(1) Disconnect the connector C-60 <M/T> or C-54 <A/T> and 

measure at the harness 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

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-846

(2) Measure the voltage between terminal No. 80 <M/T> or No. 

66 <A/T> and ground.

• Voltage should be battery positive voltage.

Q: Is the voltage normal?

YES : Go to Step 7.
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 connectors are in 

good condition, repair harness wire between relay 
box (9) and ECM connector C-60 (terminal No. 80) 
<M/T> or PCM connector C-54 (terminal No. 66) 
<A/T> because of open circuit. Then confirm that the 
malfunction symptom is eliminated.

AK000403 AK

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

AKX01436

46 45 44
57 56 55
66 65 64

54 53 52 51 50 49 48 47

43 42 41

63 62 61 60

59 58

C-54 HARNESS 
CONNECTOR: 
COMPONENT SIDE

<A/T>

AY

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-847

STEP 7. Check the continuity at ECM harness side 
connector C-49 <M/T> or PCM harness side connector 
C-54 <A/T>.
(1) Disconnect the connector C-49 <M/T> or C-54 <A/T> and 

measure at the harness side.

AK300413

1

14

4

19

5

22

6

17

8

15

9

18

7

20

16

2

21

23

26

24

25

3

10

11

12

13

CONNECTOR: C-49 <M/T>

C-49 (G)

AB

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-848

(2) Check for the continuity between terminal (No. 13, No. 26) 

<M/T> or (No. 42, No. 48) <A/T> and ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 8.
NO :  Repair harness wire between ECM connector C-49 

(terminal No. 13, No. 26) <M/T> or PCM connector 
C-54 (terminal No. 42, No. 48) <A/T> and ground 
because of open circuit. Then confirm that the 
malfunction symptom is eliminated.

AK000404AJ

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

<M/T>

C-49 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AKX01437

<A/T>

C-54 HARNESS 
CONNECTOR: 
COMPONENT SIDE

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

AR