Mitsubishi Eclipse. Manual - part 237

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-441

STEP 9. Check for short circuit to ground between 
camshaft position sensor connector B-09 (terminal No. 2) 
and ECM connector C-60 (terminal No. 88) <M/T> or PCM 
connector C-54 (terminal No. 56) <A/T>.
Q: Is the harness wire in good condition?

YES : Replace the ECM or PCM. Then go to Step 19.
NO :  Repair it. Then go to Step 19.

AK300411

1

2

3

B-09 (B)

AB

CONNECTOR: B-09

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

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-442

STEP 10. Measure the power supply voltage at camshaft 
position sensor connector B-09.
(1) Disconnect the connector B-09 and measure at the harness 

side.

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

(3) Measure the voltage between terminal No. 3 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 12.
NO :  Go to Step 11.

STEP 11. Check connector A-18X at MFI relay for damage.
Q: Is the connector in good condition?

YES : Repair harness wire between MFI relay connector 

A-18X (terminal No. 4) and camshaft position sensor 
connector B-09 (terminal No. 3) because of open 
circuit or short circuit to ground. Then go to Step 19.

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

Connector Inspection 

P.00E-2

. Then go to Step 19.

AK300411

1

2

3

B-09 (B)

AB

CONNECTOR: B-09

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01422

B-09 HARNESS 
CONNECTOR: 
COMPONENT SIDE

3 2 1

AQ

AK300454

2

1

3

4

CONNECTOR: A-18X

AB

A-18X

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-443

STEP 12. Check the continuity at camshaft position sensor 
connector B-09.
(1) Disconnect the connector B-09 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 1 and 

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 15.
NO :  Go to Step 13.

AK300411

1

2

3

B-09 (B)

AB

CONNECTOR: B-09

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01423

B-09 HARNESS 
CONNECTOR: 
COMPONENT SIDE

3 2 1

AL

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-444

STEP 13. Check connector C-53 at ECM <M/T> or 
connector C-50 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Go to Step 14.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 19.

AK300417

34 33 32

36 35

37

42

45

31

39

38

46

40

41

43

44

CONNECTOR: C-53 <M/T>

C-53 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300414

2

3

4

5

6

7

8

9

11

12

13

14

15

16

17

18

19

20

30

21

22

23

24

25

26

27

28

29

31

32

33

34

35

1

10

C-50 (GR)

CONNECTOR: C-50 <A/T>

AB

HARNESS CONNECTOR:
COMPONENT SIDE