Mitsubishi Eclipse. Manual - part 598

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-935

STEP 9. Check the right bank injector resistance at injector 
intermediate connector B-48.
(1) Disconnect the injector intermediate connector B-48.

(2) Measure the resistance between each male connector side 

terminal.

a. Measure the resistance between terminal 1 and 2 when 

measuring No. 1 cylinder injector.

b. Measure the resistance between terminal 1 and 3 when 

measuring No. 3 cylinder injector.

c. Measure the resistance between terminal 1 and 4 when 

measuring No. 5 cylinder injector.

• Resistance should be between 13 and 16 ohms [at 20°C 

(68

°F)].

Q: Is the measured resistance between 13 and 16 ohms?

YES : Go to Step 12.
NO :  Go to Step 10.

STEP 10. Check the right bank injector.
(1) Remove the intake manifold.
(2) Disconnect the right bank injector connector, which 

deviates from the standard value at Step 9.

(3) Measure the resistance between injector side connector 

terminals No. 1 and No. 2.

Standard value: 13 

− 16 ohms [at 20°C (68°F)]

Q: Is the measured resistance between 13 and 16 ohms?

YES : Go to Step 11.
NO :  Replace the injector. Then confirm that the 

malfunction symptom is eliminated.

AK300751

1

2

3

4

CONNECTOR: B-48

AB

B-48 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000447

1 2

3 4

INJECTOR
INTERMEDIATE
CONNECTOR

AB

AK300752

1

2

CONNECTORS: B-01, B-05, B-26

AB

B-05 (GR) B-26 (GR)

B-01 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000559

2

1

INJECTOR SIDE
CONNECTOR

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-936

STEP 11. Check connector B-01 or B-05 or B-26 at right 
bank injector for damage.
(1) Check the injector connector, which deviates from the 

standard value at Step 9.

Q: Is the connector in good condition?

YES : Repair harness wire between injector intermediate 

connector and right bank injector connector because 
of harness damage. Then confirm that the 
malfunction symptom is eliminated.

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

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 12. Check connector B-48 at injector intermediate 
connector for damage.
Q: Is the connector in good condition?

YES : Go to Step 13.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

STEP 13. Check connector B-02, B-06, B-25 at left bank 
injector 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 confirm that the 

malfunction symptom is eliminated.

AK300752

1

2

CONNECTORS: B-01, B-05, B-26

AB

B-05 (GR) B-26 (GR)

B-01 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300751

1

2

3

4

CONNECTOR: B-48

AB

B-48 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300753

1

2

CONNECTORS: B-02, B-06, B-25

AB

B-02 (GR)

B-06 (GR) B-25 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-937

STEP 14. Check connector C-51 at ECM <M/T> or 
connector C-52 at PCM <A/T> for damage.
Q: Is the connector in good condition?

YES : Go to Step 15.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK300458

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

CONNECTOR: C-52 <A/T>

C-52 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300443

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

CONNECTOR: C-51 <M/T>

C-51 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-938

STEP 15. Check for harness damage between injector 
connector and ECM connectort <M/T> or PCM connector 
<A/T>.

a. Check the harness wire between injector connector 

B-01 (terminal No. 2) and ECM connector C-51 (termi-
nal No. 1) <M/T> or PCM connector C-52 (terminal No. 
1) <A/T> when checking No. 1 cylinder injector.

b. Check the harness wire between injector connector 

B-02 (terminal No. 2) and ECM connector C-51 (termi-
nal No. 9) <M/T> or PCM connector C-52 (terminal No. 
9) <A/T> when checking No. 2 cylinder injector.

c. Check the harness wire between injector connector 

B-05 (terminal No. 2) and ECM connector C-51 (termi-
nal No. 24) <M/T> or PCM connector C-52 (terminal No. 
24) <A/T> when checking No. 3 cylinder injector.

d. Check the harness wire between injector connector 

B-06 (terminal No. 2) and ECM connector C-51 (termi-
nal No. 2) <M/T> or PCM connector C-52 (terminal No. 
2) <A/T> when checking No. 4 cylinder injector.

e. Check the harness wire between injector connector 

B-26 (terminal No. 2) and ECM connector C-51 (termi-
nal No. 10) <M/T> or PCM connector C-52 (terminal No. 
10) <A/T> when checking No. 5 cylinder injector.

f. Check the harness wire between injector connector 

B-25 (terminal No. 2) and ECM connector C-51 (termi-
nal No. 25) <M/T> or PCM connector C-52 (terminal No. 
25) <A/T> when checking No. 6 cylinder injector.

Q: Is the harness wire in good condition?

YES : Check the following items, and repair or replace the 

defective items.

a. Check the ignition coil, spark plugs, spark plug 

cables.

b. Check if the injectors are clogged.

c. Check compression pressure.

d. Check fuel lines for clogging.
e. Check if the foreign materials (water, 

kerosene, etc.) got into fuel.

Then confirm that the malfunction symptom is 

eliminated.

NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

AK300754

1

2

CONNECTORS: B-01, B-02, B-05, B-06, 
                            B-25, B-26

AB

B-01 (GR)

B-05 (GR)

B-26 (GR)

B-02 (GR)

B-06 (GR)

B-25 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300458

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

CONNECTOR: C-52 <A/T>

C-52 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300443

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

CONNECTOR: C-51 <M/T>

C-51 (GR)

AB

HARNESS CONNECTOR:
COMPONENT SIDE