Mitsubishi Eclipse. Manual - part 347

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-881

STEP 5. Check connector C-49 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 6.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then confirm that the 

malfunction symptom is eliminated.

AK300413

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14

4

19

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22

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17

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20

16

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21

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26

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25

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10

11

12

13

CONNECTOR: C-49 <M/T>

C-49 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300414

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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-882

STEP 6. Check for open circuit and short circuit to ground 
between ignition coil connector and ECM connector <M/T> 
or PCM connector <A/T>.

a. Check the harness wire between ignition coil connector 

B-16 (terminal No. 3) and ECM connector C-49 (terminal 
No. 10) <M/T> or PCM connector C-50 (terminal No. 11) 
<A/T> when checking ignition coil 1.

b. Check the harness wire between ignition coil connector 

B-21 (terminal No. 3) and ECM connector C-49 (terminal 
No. 23) <M/T> or PCM connector C-50 (terminal No. 12) 
<A/T> when checking ignition coil 2.

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then confirm that the malfunction 

symptom is eliminated.

NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

AK300742

1

2

3

CONNECTORS: B-16, B-21

AB

B-21 (GR)

B-16 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300413

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14

4

19

5

22

6

17

8

15

9

18

7

20

16

2

21

23

26

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25

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10

11

12

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CONNECTOR: C-49 <M/T>

C-49 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300414

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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-883

STEP 7. Check for harness damage between ignition coil 
connector and ECM connector <M/T> or PCM connector 
<A/T>.

a. Check the harness wire between ignition coil connector 

B-16 (terminal No. 3) and ECM connector C-49 (terminal 
No. 10) <M/T> or PCM connector C-50 (terminal No. 11) 
<A/T> when checking ignition coil 1.

b. Check the harness wire between ignition coil connector 

B-21 (terminal No. 3) and ECM connector C-49 (terminal 
No. 23) <M/T> or PCM connector C-50 (terminal No. 12) 
<A/T> when checking ignition coil 2.

Q: Is the harness wire in good condition?

YES : Go to Step 8.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

AK300742

1

2

3

CONNECTORS: B-16, B-21

AB

B-21 (GR)

B-16 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK300413

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14

4

19

5

22

6

17

8

15

9

18

7

20

16

2

21

23

26

24

25

3

10

11

12

13

CONNECTOR: C-49 <M/T>

C-49 (G)

AB

HARNESS CONNECTOR:
COMPONENT SIDE

AK300414

2

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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-884

STEP 8. Check for continuity at ignition coil harness side 
connector B-16, B-21.
(1) Disconnect the connectors B-16, B-21 and measure at the 

harness side.

(2) Check for continuity between terminal No. 2 and ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 9.
NO :  Repair harness wire between ignition coil connector 

B-16, B-21 (terminal No. 2) and ground because of 
open circuit or harness damage. Then confirm that 
the malfunction symptom is eliminated.

AK300742

1

2

3

CONNECTORS: B-16, B-21

AB

B-21 (GR)

B-16 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK101265

1

2

3

AJ

B-16, B-21 HARNESS 
CONNECTORS: 
COMPONENT SIDE

1

2

3