Mitsubishi Montero Sport (2004+). Manual - part 279

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-529

STEP 7. Check connector C-89 at PCM 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.

STEP 8. Check for open circuit and short circuit to ground 
between evaporative emission purge solenoid connector 
A-10 (terminal No. 2) and PCM connector C-89 (terminal 
No. 34).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 12.
NO :  Repair it. Then go to Step 12.

AK103914

2

3

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12

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30

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34

35

1

10

AB

CONNECTOR: C-89

C-89(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK200027

2 1

AB

CONNECTOR: A-10

A-10(B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK103914

2

3

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30

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35

1

10

AB

CONNECTOR: C-89

C-89(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-530

STEP 9. Check connector C-89 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 10.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

STEP 10. Check for harness damage between MFI relay 
connector C-59 (terminal No. 1) and evaporative emission 
purge solenoid connector A-10 (terminal No. 1).

NOTE: Check harness after checking intermediate connector 
C-14. If intermediate connectors is damaged, repair or replace 
them. Refer to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Then go to Step 12.

Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO :  Repair it. Then go to Step 12.

AK103914

2

3

4

5

6

7

8

9

11

12

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14

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30

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32

33

34

35

1

10

AB

CONNECTOR: C-89

C-89(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK200023

2 1

3

4

CONNECTOR: C-59

AB

C-59

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

AK200027

2 1

AB

CONNECTOR: A-10

A-10(B)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-531

STEP 11. Check for harness damage between evaporative 
emission purge solenoid connector A-10 (terminal No. 2) 
and PCM connector C-89 (terminal No. 34).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 12.
NO :  Repair it. Then go to Step 12.

STEP 12. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Procedure 6 − 

Other Monitor 

P.13A-4

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0443 set?

YES : Repeat the troubleshooting.
NO :  The procedure is complete.

AK200027

2 1

AB

CONNECTOR: A-10

A-10(B)

HARNESS CONNECTOR:
COMPONENT SIDE

AK103914

2

3

4

5

6

7

8

9

11

12

13

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19

20

30

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26

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28

29

31

32

33

34

35

1

10

AB

CONNECTOR: C-89

C-89(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-532

DTC P0446: Evaporative Emission Control System Vent Control Circuit

9

RED

AK200192

Evaporative Emission Ventilation Solenoid Circuit

WHITE-

BLA

CK

WHITE-

BLA

CK

WHITE-

BLA

CK

RED-

BLA

CK

RED-

BLA

CK

RED-

BLA

CK

RED

RED

RED

FUSIBLE LINK (12)

20

12

1

2

3

4

MFI
RELAY

35

EVAPORATIVE EMISSION
VENTILATION SOLENOID

POWERTRAIN CONTROL
MODULE (PCM)

2

1

10

12

3

C-59

1

10

2 3 4 5 6 7 8 9

11

12 13 14 15 16 17 18 19 20 21 22

23 24 25 26 27 28 29 30 31 32 33

C-14

10

2

3 4

5 6

7 8

9

11 12 13 14 15 16 17 18 19 20

30

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24

25

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31 32 33

34 35

1

C-89
(MU803784)

1

10

15

2

11

3

12

4

13 14

5

16

6

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7

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8

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9

20

E-45

6

10

2

7

8

3 4 5

9

11 12 13

1

C-79
MU801553

1 2

E-63
MU802779

JOINT
CONNECTOR (5)

1

2

3

4