Mitsubishi Eclipse. Manual - part 596

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-927

STEP 4. Using scan tool MB991958, check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following items in the actuator test. Refer to 

Actuator Test Reference Table 

P.13B-1078

.

a. Item 07: Fuel pump.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?

YES : Go to Step 5.
NO :  Repair or replace. Then confirm that the malfunction 

symptom is eliminated.

STEP 5. Check the ignition system.
(1) Connect the tachometer to engine speed detection 

connector A-12X (terminal No. 1).

(2) Crank the engine.

• A tachometer moves.

(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does a tachometer move?

YES : Go to Step 6.
NO :  Refer to INSPECTION PROCEDURE 33 

− Ignition 

Circuit System 

P.13B-1053

.

STEP 6. Check the ignition timing.
(1) Check the ignition timing at cranking.

Standard value: 5

°BTDC ± 3°

Q: Is the ignition timing normal?

YES : Go to Step 7.
NO :  Check that the crankshaft position sensor and timing 

belt cover are in the correct position. Then confirm 
that the malfunction symptom is eliminated.

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

AK300747

1

CONNECTOR: A-12X

AB

A-12X

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-928

STEP 7. Check the left bank injector.
(1) Disconnect the left bank injector connector B-02, B-06, 

B-25.

(2) Measure the resistance between each injector side 

connector terminal 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 8.
NO :  Replace the faulty injector. Then confirm that the 

malfunction symptom is eliminated.

STEP 8. 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 11.
NO :  Go to Step 9.

AK300753

1

2

CONNECTORS: B-02, B-06, B-25

AB

B-02 (GR)

B-06 (GR) B-25 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000559

2

1

INJECTOR SIDE
CONNECTOR

AB

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-929

STEP 9. 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 8.

(3) Measure the resistance between injector side connector 

terminal 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 10.
NO :  Replace the injector. Then confirm that the 

malfunction symptom is eliminated.

STEP 10. 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 8.

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

YES : Go to Step 12.
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

AK000559

2

1

INJECTOR SIDE
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

AK300751

1

2

3

4

CONNECTOR: B-48

AB

B-48 (B)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-930

STEP 12. 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 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 C-51 at ECM <M/T> or 
connector C-52 <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 confirm that the 

malfunction symptom is eliminated.

AK300753

1

2

CONNECTORS: B-02, B-06, B-25

AB

B-02 (GR)

B-06 (GR) B-25 (GR)

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

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