Mitsubishi Eclipse. Manual — part 254

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-509

STEP 4. Measure the power supply voltage at evaporative
emission ventilation solenoid harness side connector
D-10.
(1) Disconnect the connector D-10 and measure at the harness

side.

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

(3) Measure the voltage between terminal No. 2 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 : Go to Step 5.

STEP 5. Check connector A-18X at MFI relay for damage.
Q: Is the connector in good condition?

YES : Check connectors D-16, C-90 and C-28 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 MFI relay connector A-18X (terminal No. 4)
and evaporative emission ventilation solenoid
connector D-10 (terminal No. 2) because of open
circuit or short circuit to ground. 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.

AK300452

1

2

CONNECTOR: D-10

AB

D-10 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01502 BD

D-10 HARNESS
CONNECTOR:
COMPONENT SIDE

2

1

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-510

STEP 6. Measure the power supply voltage at ECM
connector C-56 <M/T> or PCM connector C-50 <A/T> by
backprobing.
(1) Do not disconnect the connector C-56 <M/T> or C-50

<A/T>.

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

AK300416

58

60

61

53 52 51

55 54

56

59

62

57

CONNECTOR: C-56 <M/T>

C-56 (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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-511

(3) Measure the voltage between terminal No. 55 <M/T> or No.

35 <A/T> and ground by backprobing.

• Voltage should be battery positive voltage.

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

YES : Go to Step 9.
NO : Go to Step 7.

AK000302

<M/T>

C-56 HARNESS
CONNECTOR:
HARNESS SIDE

5152 53 54 55 56

57 58 59 60 6162

AI

AK000303

1

2

3 4

5 6

7 8

9 10 111213 1415 16 17 18 19 20 21 22 23

24 25

26 27 28 29

30 313233

34 35

AK

C-50 HARNESS
CONNECTOR:
HARNESS SIDE

<A/T>

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-512

STEP 7. Check connector C-56 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 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 12.

AK300416

58

60

61

53 52 51

55 54

56

59

62

57

CONNECTOR: C-56 <M/T>

C-56 (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