Mitsubishi Montero (2004+). Manual — part 360

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-927

STEP 12. Check for open circuit and short circuit to
ground and harness damage between fuel pump relay 2
connector B-24X (terminal No. 3) and fuel pump connector
G-04 (terminal No. 5).

NOTE: Check harness after checking intermediate connectors
D-111, E-111, F-07. If intermediate connectors are damaged,
repair or replace them. After to GROUP 00E, Harness Connec-
tor Inspection

P.00E-2

. Then check that the malfunction is elim-

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

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

is eliminated.

STEP 13. Check connector D-132 at PCM 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.

AK201177

2 1

3

4

B-24X

AB

CONNECTOR: B-24X

HARNESS
CONNECTOR:
COMPONENT SIDE

AK201553

1

2

3

4

5

G-04(GR)

AB

CONNECTOR: G-04

HARNESS
CONNECTOR:
COMPONENT SIDE

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-928

STEP 14. Measure the power supply voltage at PCM
connector D-132.
(1) Disconnect the connector D-132 and measure at the

harness side.

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

(3) Measure the voltage between terminal No. 16 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 PCM. Then confirm that the malfunction

symptom is eliminated.

NO : Repair harness wire between fuel pump relay 1

connector B-19X (terminal No. 2) and PCM connector
D-132 (terminal No. 16) because of open circuit. Then
confirm that the malfunction symptom is eliminated.

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)

AK201386

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

D-132 HARNESS
CONNECTOR:
COMPONENT SIDE

AK201386AB

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-929

INSPECTION PROCEDURE 30: Ignition Switch-ST System and Transmission Range Switch System

BLA

CK-RED

WHITE

BLA

C

K-

YELLO

W

BLA

C

K-

YELLO

W

AK303222

5

LOCK

ACC

5

IGNITION
SWITCH-IG

R

IG2

IG1

ST

1

POWERTRAIN
CONTROL
MODULE (PCM)

3 4
8

7

6

1

5

9 10

2

C-04

MU802645

51

P

R

L

N

9

10

TRANSMISSION RANGE
SWITCH

3

4 5 6

1 2

D-204

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-114

Ignition Switch-ST and Transmission Range Switch Circuit

E-10

MU801361

1

31

35363738394041 42 43
444546474849

50 51

5253

545556

57 58

32

33 34

D-133

(MU803803)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-930

.

COMMENT

• If the selector lever is moved to "P" or "N" range

and the ignition switch is turned to "START" posi-
tion, battery positive voltage is supplied to PCM
(terminal No. 51) through the ignition switch and
transmission range switch. Because of this, the
PCM detects that the engine is cranking.

• The transmission range switch detects the trans-

mission range (P, N or other ranges) and con-
verts it to a voltage signal (high or low). Then the
transmission range switch sends that signal to
the PCM.

If the selector lever is moved to "P" or "N" range
with the ignition switch turned on (except
"START" position), continuity will exist between
the PCM and ground through the transmission
range switch and starter motor. The terminal volt-
age of the PCM will become low. If the selector
lever is moved to the other ranges, continuity will
be lost between the PCM and ground. The termi-
nal voltage of the PCM will become high.

.

TROUBLESHOOTING HINTS (The most likely
caused for this code to be set are: )

• Malfunction of the ignition switch.

• Malfunction of the transmission range switch.

• Improper connector contact, open circuit or

short-circuit in the harness wire.

• Malfunction of the PCM.

AK201288

TRANSMISSION
RANGE SWITCH

AB

C-04

CONNECTOR: C-04

AK201038

CONNECTOR: D-133

AC

PCM

D-133(GR)

AK201052

CONNECTOR: E-114

E-114

AC

AK201052

E-10

AD

CONNECTOR: E-10

AK201045

D-204

AB

CONNECTOR: D-204