Mitsubishi Montero (2004+). Manual - part 336

 

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Mitsubishi Montero (2004+). Manual - part 336

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-831

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Communication with Scan Tool Is Not Possible. (Comunication with All 
Systems Is Not Possible.)

AK201152

WHITE

BLA

CK

BLA

CK

RED

RED

10

38

1

5

16

1

10

9

2

11

3

12

4

13

5

14

6

15

7

16

8

D-118

4

10

29

38

11

14 15 16

2 3

12 13

26

5 6 7 8 9

27 28

32 33

17 18 19 20 21 22 23 24

34

35

30

36

25

31

37

1

D-28

13

3

5

7

12

9

1

6

8

11

10

2

4

D-210

(MU801860)

DATA LINK
CONNECTOR

4

JUNCTION
BLOCK

FUSIBLE
LINK (2)

1

D-211

Data Link Connector Circuit

10

20A

AK200976

DATA LINK
CONNECTOR

AB

D-118(B)

CONNECTOR: D-118

AK201041AB

CONNECTOR: D-211

D-211(B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-832

.

CIRCUIT OPERATION

• A battery positive voltage is applied on the data 

link connector power terminal (terminal No. 16). 
The ground terminals (terminal No. 4, No. 5) are 
grounded to the vehicle body.

.

COMMENT

• The cause is probably a defect in power supply 

system (including ground) for the on-board diag-
nostic test mode line.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this case:) 

• Malfunction of the data link connector.

• Damaged harness wire.

DIAGNOSIS

STEP 1. Measure the power supply voltage at data link 
connector D-118.
(1) Measure voltage between terminal No. 16 and ground.

• Voltage should be battery positive voltage.

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : 
Go to Step 2.
NO :  Check harness connectors D-210, D-211, D-28 at 

intermediate connector for damage, and repair or 
replace as required. Refer to GROUP 00E, Harness 
Connector Inspection 

P.00E-2

. If intermediate 

connector D-210, D-211, D-28 are in good condition, 
repair an open circuit between fusible link (2) and data 
link connector D-118 (terminal No. 16). Then confirm 
that the malfunction symptom is eliminated.

AK201041AC

CONNECTOR: D-210

D-210

AK304351

D-28

CONNECTOR: D-28

AE

AK201285

1 2 3 4 5 6

12

11

10

1516

14

13

9

7 8

AB

D-118(B)

CONNECTOR: D-118

HARNESS CONNECTOR: 
COMPONENT SIDE

AKX01430

1 2 3 4 5 6 7 8

16

15

14

13

12

11

10

9

D-118 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AN

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-833

STEP 2. Check the continuity at data link connector D-118.
(1) Check for the continuity between terminal No. 4, No. 5 and 

ground.

• Should be less than 2 ohms.

Q: Does continuity exist?

YES :  Replace the scan tool. Then confirm that the 

malfunction symptom is eliminated.

NO :  Repair an open circuit or harness damage between 

data link connector D-118 (terminal No. 4, No. 5) and 
ground. Then confirm that the malfunction symptom is 
eliminated.

AK201285

1 2 3 4 5 6

12

11

10

1516

14

13

9

7 8

AB

D-118(B)

CONNECTOR: D-118

HARNESS CONNECTOR: 
COMPONENT SIDE

AKX01431

1 2 3 4 5 6 7 8

16

15

14

13

12

11

10

9

D-118 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AL

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-834

INSPECTION PROCEDURE 2: Scan Tool Communication with PCM Is Not Possible.

RED

-

WHITE

RV METER

RED

-WHITE

RED

-

WHITE

GREEN-

ORANGE

AK201153

GREEN-

ORANGE

28

74

7

DATA LINK
CONNECTOR

30

32

31

5

15

5

8

10

13

11

14

16 17

1 2 3 4

18

9

12

19 20

6 7

15

D-08

(MU801585)

POWERTRAIN
CONTROL
MODULE (PCM)

WITH
RV METER

WITHOUT
RV METER

9

6

10

17

18

29

2

3 4

7 8

19 20

30 31

12

11

24

33 34 35

21

32

27

26

36 37

28

38

25

13

15

14

16

23

22

1

5

E-111

1

10

9

2

11

3

12

4

13

5

14

6

15

7

16

8

D-118

Data Link Connector Circuit

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-29

61
656667686970 717273
74757677787980 8182
8384

858687

8889

62

6364

D-134

(MU803804)

AK200976

DATA LINK
CONNECTOR

AB

D-118(B)

CONNECTOR: D-118

AK201038

CONNECTOR: D-134

AD

PCM

D-134(GR)

 

 

 

 

 

 

 

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