Mitsubishi Montero Sport (2004+). Manual - part 351

 

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Mitsubishi Montero Sport (2004+). Manual - part 351

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-817

STEP 5. Check harness connector C-60 at fuel pump relay 
for damage.
Q: Is the harness 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.

STEP 6. Check the fuel pump relay
(1) Remove the fuel pump relay.

(2) Check for continuity between the fuel pump relay terminal 

No. 2 and No. 4.

• There should be continuity (approximately 70 ohms)

(3) Use jumper wires to connect fuel pump relay terminal No. 4 

to the positive battery terminal and terminal No. 2 to the 
negative battery terminal.

(4) Check for continuity between the fuel pump relay terminal 

No. 1 and No. 3 while connecting and disconnecting the 
jumper wire at the   negative battery terminal.

• Should be less than 2 ohms. (Negative battery terminal 

connected)

• Should be open loop. (Negative battery terminal discon-

nected)

(5)  Install the fuel pump relay.
Q: Is the resistance normal?

YES : Go to Step 7.
NO :  Replace the fuel pump relay. Then confirm that the 

malfunction symptom is eliminated

AK200046

2 1

3

4

CONNECTOR: C-60

AB

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

C-60

AK200046

2 1

3

4

CONNECTOR: C-60

AB

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

C-60

AK200198

1

2

3

4

AC

FUEL PUMP RELAY
SIDE CONNECTOR

AK200199

1

2

3

4

FUEL PUMP RELAY
SIDE CONNECTOR

AC

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-818

STEP 7. Measure the power supply voltage at fuel pump 
relay connector C-60.
(1) Disconnect the connector C-60 and measure at the harness 

side.

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

(3) Measure the voltage between terminals No. 3, No. 4 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 : 
Go to Step 8.
NO :  Check harness connector D-08 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-08 is 

in good condition, repair harness wire between 
ignition switch connector D-15 (terminal No. 2) and 
fuel pump relay connector C-60 (terminals No. 3, No. 
4). Then confirm that the malfunction symptom is 
eliminated.

AK200046

2 1

3

4

CONNECTOR: C-60

AB

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

C-60

2 1

3

4

AK200197

C-60 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK200197AE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-819

STEP 8. Check for open circuit and short circuit to ground 
and harness damage between fuel pump relay connector 
C-60 (terminal No. 1) and fuel pump connector E-26 
(terminal No. 1).

NOTE: Check harness after checking intermediate connectors 
C-16 and E-44. If intermediate connectors C-16 and E-44 are 
damaged, repair or replace them. Refer to GROUP 00E, Har-
ness Connector Inspection 

P.00E-2

. Then check that the mal-

function is eliminated.
Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair it. Then confirm that the malfunction symptom 

is eliminated.

STEP 9. Check harness connector C-89 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 confirm that the 

malfunction symptom is eliminated.

AK200046

2 1

3

4

CONNECTOR: C-60

AB

HARNESS 
CONNECTOR:
COMPONENT 
SIDE

C-60

AK200045

2 1

CONNECTOR: E-26

AB

HARNESS CONNECTOR:
COMPONENT SIDE

E-26

AK103914

2

3

4

5

6

7

8

9

11

12

13

14

15

16

17

18

19

20

30

21

22

23

24

25

26

27

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-820

STEP 10. Measure the power supply voltage at PCM 
connector C-89.
(1) Disconnect the connector C-89 and measure at the harness 

side.

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

(3) Measure the voltage between terminal No. 21 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 

connector C-60 (terminal No. 2) and PCM connector 
C-89 (terminal No. 21). Then confirm that the 
malfunction symptom is eliminated.

AK103914

2

3

4

5

6

7

8

9

11

12

13

14

15

16

17

18

19

20

30

21

22

23

24

25

26

27

28

29

31

32

33

34

35

1

10

AB

CONNECTOR: C-89

C-89(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK000409

AK000409 AQ

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

C-89 HARNESS 
CONNECTOR: 
COMPONENT SIDE

 

 

 

 

 

 

 

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