Mitsubishi Eclipse. Manual - part 624

 

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Mitsubishi Eclipse. Manual - part 624

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1039

STEP 10. Check the fuel pump operation.
(1) Disconnect fuel pump connector D-17.

(2) Use jumper wires to connect fuel pump connector terminal 

5 to the positive battery terminal and terminal No. 4 to the 
negative battery terminal.

• An operating sound of the fuel pump should be heard.

Q: Is the fuel pump operating properly?

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

malfunction symptom is eliminated.

STEP 11. Check the continuity at fuel pump harness side 
connector D-17.
(1) Disconnect the connector D-17 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 4 and 

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 12.
NO :  Repair harness wire damage between fuel pump 

connector D-17 (terminal No. 4) and ground because 
of open circuit or harness damage. Then confirm that 
the malfunction symptom is eliminated.

AK300446

1

2

3

4

5

D-17 (GR)

AB

CONNECTOR: D-17

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01439

FUEL PUMP SIDE
CONNECTOR

AB

1 2 3

4 5

AK300446

1

2

3

4

5

D-17 (GR)

AB

CONNECTOR: D-17

HARNESS CONNECTOR:
COMPONENT SIDE

AKX01440AC

1

2

3

4

5

D-17 HARNESS
SIDE CONNECTOR

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1040

STEP 12. Check for open circuit and short circuit to 
ground and harness damage between fuel pump relay 2 
connector C-105 (terminal No. 4) and fuel pump connector 
D-17 (terminal No. 5).

NOTE: Check harness after checking intermediate connectors 
C-101. If intermediate connectors are damaged, repair or 
replace them. After to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. Then check that the malfunction is elimi-

nated.
Q: Is the harness wire in good condition?

YES : Go to Step 13.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

AK300746

CONNECTOR: C-105

AB

C-105

AK300446

1

2

3

4

5

D-17 (GR)

AB

CONNECTOR: D-17

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L>

13B-1041

STEP 13. 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 14.
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-1042

STEP 14. Check the power supply voltage at ECM 
connector C-51 <M/T> or PCM connector C-52 <A/T>.
(1) Disconnect the connector C-51 <M/T> or C-52 <A/T> and 

measure at the harness side.

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

(3) Measure the voltage between terminal 21 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 : 
Replace the ECM or PCM. Then confirm that the 

malfunction symptom is eliminated.

NO :  Check harness connectors C-28 and C-108 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 fuel pump relay 2 connector C-105 (terminal 
No. 2) and ECM connector C-51 (terminal No. 21) 
<M/T> or PCM connector C-52 (terminal No. 21) 
<A/T> because of open circuit. 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

AK000448AD

  8 7

6 5

4 3

2

1
9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

30

31

32

33

34

35

29

C-51<M/T>, C-52<A/T>
HARNESS CONNECTOR: 
COMPONENT SIDE

 

 

 

 

 

 

 

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