Mitsubishi Montero (2004+). Manual - part 229

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-403

STEP 8. Check connector D-134 at PCM for damage.

Q: Is the connector in good condition?

YES : Go to Step 9.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

STEP 9. Check for short circuit to ground between fuel 
level sensor connector G-03 (terminal No. 3) and PCM 
connector D-134 (terminal No. 81).

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.

AK201166

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

AK200959

1

2

3

AB

CONNECTOR: G-03

G-03(B)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-404

STEP 10. Check connector D-134 at PCM for damage.

Q: Is the connector in good condition?

YES : Go to Step 11.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

STEP 11. Check for harness damage between fuel tank 
temperature sensor connector G-03 (terminal No. 3) and 

PCM connector D-134 (terminal No. 81).

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

AK200959

1

2

3

AB

CONNECTOR: G-03

G-03(B)

HARNESS 
CONNECTOR: 
COMPONENT SIDE

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-405

NOTE: Check harness after checking intermediate connector 
D-111, E-113 and F-07. If the intermediate connectors are dam-
aged, repair or replace it. Refer to GROUP 00E, Harness Con-
nector Inspection 

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 P0181 set?

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-406

DTC P0182: Fuel Tank Temperature Sensor Circuit Low Input

POWERTRAIN CONTROL
MODULE (PCM)

Fuel Tank Temperature  Sensor  Circuit

2

16

3

2

7

1

BLA

C

K

BLA

C

K

LIGHT 

GREEN-

RED

G-03

MU802337

1 2 3

AK201139

81

FUEL TANK TEMPERATURE SENSOR
(INTEGRATED IN FUEL LEVEL SENSOR)

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1

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6 7

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8 9

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11

2

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5

23

D-111

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7

6

5

1 2 3 4

F-07

MU802609

11

1

9 10

13

2

12

3 4

7

5

14

6

8

E-113

5 V

LIGHT 

GREEN-

RED

LIGHT 

GREEN-

RED

LIGHT GREEN-

RED

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656667686970 717273
74757677787980 8182
8384

858687

8889

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6364

D-134

(MU803804)