Mitsubishi Montero (2004+). Manual — part 265

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-547

NOTE: Check harness after checking intermediate connector
B-44. If intermediate connector B-44 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

. Then go to Step 12.

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 9. Check harness connector D-132 at PCM for
damage.
Q: Is the harness 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 B-22X (terminal No. 1) and evaporative emission
purge solenoid connector B-06 (terminal No. 2).
Q: Is the harness wire in good condition?

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

AK200938

2

3

4

5

6

7

8

9

1

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR)

AK200951

2 1

3

4

B-22X

AB

CONNECTOR: B-22X

HARNESS
CONNECTOR:
COMPONENT SIDE

AK201272

1

2

AB

CONNECTOR: B-06

HARNESS
CONNECTOR:
COMPONENT SIDE

B-06(B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-548

STEP 11. Check for harness damage between evaporative
emission purge solenoid connector B-06 (terminal No. 1)
and PCM connector D-132 (terminal No. 23).

NOTE: Check harness after checking intermediate connector
B-44. If intermediate connector B-44 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

. Then go to Step 12.

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 : Retry the troubleshooting.
NO : The inspection is complete.

AK201272

1

2

AB

CONNECTOR: B-06

HARNESS
CONNECTOR:
COMPONENT SIDE

B-06(B)

AK200938

2

3

4

5

6

7

8

9

1

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-549

DTC P0446: Evaporative Emission Control System Vent Control Circuit

3 4

1 2

WHITE-

BLA

CK

WHITE-

BLA

CK

RED

AK201146

MFI RELAY

BATTERY

11

2

1

1

25

6

B-22X

D-116

E-111

D-112

E-113

F-10

1

4

3

2

POWERTRAIN
CONTROL
MODULE (PCM)

1 2

G-27

MU802779

EVAPORATIVE
EMISSION
VENTILATION
SOLENOID

Evaporative Emission Ventilation Solenoid Circuit

RED

RED

RED

RED

GREEN-

RED

2

5

6

1

3

E-111

7 8

5

3 4

35

34

10 11 12

2122 23 24

13 14 15

25 26 27

16

28

17

18 19 20

29

30 31

32 33

36 37

38

9

1 2

6

15 16

26 27 28 29

32 33 34

17 18 19 20 21 22 23 24 25

30 31

36 37

35

38

10

11 12 13

1 2 3

4 5 6 7 8 9

14

D-112

1

12

23 24 25 26

2

13

3

14

4

15

5

16

6

17

7

18

8

19

9

20 21 22

27 28 29 30 31 32 33

10 11

D-116

E-113

7

9

1

3

6

11

2

4

8

5

10

13

12

14

GREEN-

RED

GREEN-

RED

GREEN-

RED

5

3

6

1 2
4

F-10

1

2

3

5

6 7 8 9

4

20

21 22

232425

2627

10111213

14 15

16 1718

19

D-132

(MU803802)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-550

.

CIRCUIT OPERATION

• The evaporative emission ventilation solenoid

power is supplied from the MFI relay (terminal
No. 1).

• The PCM controls the evaporative emission ven-

tilation solenoid ground by turning the power tran-
sistor in the PCM ON and OFF.

.

TECHNICAL DESCRIPTION

• To judge if there is open circuit in the evaporative

emission ventilation solenoid drive circuit, PCM
measures the surge voltage of the evaporative
emission ventilation solenoid coil.

• The PCM drives the evaporative emission venti-

lation solenoid. After the solenoid is turned off,
the PCM will check if the solenoid coil produces a
surge voltage of 2 Volts or more.

.

AK201059

G-27(B)

AB

CONNECTOR: G-27

AK201038

CONNECTOR: D-132

AB

PCM

D-132(GR)

AK201039

MFI RELAY

B-22X

AB

CONNECTOR: B-22X

AK201063

CONNECTOR: D-116

D-116

AB

AK201060

E-111

AB

CONNECTOR: E-111

AK201061

CONNECTOR: D-112

D-112

AB

AK304350

F-10 (GR)

AC

CONNECTOR: F-10

AK201062

CONNECTOR: D-113

D-113

AB