Mitsubishi Montero (2004+). Manual — part 294

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-663

STEP 8. Check harness connector D-133 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Repair harness wire between power steering

pressure switch connector B-29 (terminal No. 1) and
PCM connector D-133 (terminal No. 47) because of
open circuit. Then go to Step 14.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 14.

STEP 9. Check harness connector D-133 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 14.

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CONNECTOR: D-133

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-133(GR)

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CONNECTOR: D-133

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-133(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-664

STEP 10. Check for short circuit to ground between power
steering pressure switch connector B-29 (terminal No. 1)
and PCM connector D-133 (terminal No. 47).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.

STEP 11. Replace the power steering pressure switch.
(1) Replace the power steering pressure switch.
(2) Check the trouble symptoms.
(3) Read in the diagnostic trouble code (DTC).
Q: Is DTC P0551 set?

YES : Go to Step 12.
NO : Go to Step 14.

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CONNECTOR: B-29

B-29(B)

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-133

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-133(GR)

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CONNECTOR: B-29

B-29(B)

HARNESS
CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-665

STEP 12. Check harness connector D-133 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 13.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 14.

STEP 13. Check for harness damage between power
steering pressure switch connector B-29 (terminal No. 1)
and PCM connector D-133 (terminal No. 47).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.

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CONNECTOR: D-133

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-133(GR)

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CONNECTOR: B-29

B-29(B)

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-133

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-133(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-666

STEP 14. Using scan tool MB991958, check data list item
27: Power Steering Pressure Switch.

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item

27, Power Steering Pressure Switch.

• If the steering wheel is not turned while idling, "OFF" will

be displayed.

• If the steering wheel is turned while idling, "ON" will be

displayed.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?

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

DTC P0554: Power Steering Pressure Sensor Circuit Intermittent

AK302970

AB

MB991911

MB991824

MB991827

AK201149

YELL

O

W

POWERTRAIN
CONTROL
MODULE (PCM)

1

B-29

(MU801211)

POWER STEERING
PRESSURE SWITCH

47

1

Power Steering Pressure Switch Circuit

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444546474849

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5253

545556

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33 34

D-133

(MU803803)