Mitsubishi Outlander GS45X. Manual — part 748

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-815

.

CIRCUIT OPERATION

• Battery voltage is applied to the oil pressure

switch (terminal No. 1) from the engine-ECU (ter-
minal No. 36).

.

COMMENT

• Detect the engine oil pressure conditions and

enter the result into the ECM. After starting the
engine if the oil pressure rises to higher than the
given pressure, the engine oil pressure switch
turns OFF. Under this condition the ECM sends
the command of turning off the oil warning lamp
to the combination meter via CAN.

.

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

• Engine oil pressure switch failed.

• Open or shorted engine oil pressure switch cir-

cuit, harness damage, or connector damage.

• ECM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

STEP 1. Check harness connector B-16 at engine oil
pressure switch for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 2.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 5 .

AK704328

AB

Connector: B-16, B-24

B-24 (B)

B-16

AK704090AB

Connector: B-10

B-10 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-816

STEP 2. Measure the power supply voltage at engine oil
pressure switch connector B-16.
(1) Disconnect the connector B-16 measure at the harness

side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 1 and ground.

• The voltage should equal 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 5.
NO : Go to Step 3.

STEP 3. Check harness connector B-10 ECM connector for
damage.
Q: Is the connector in good condition?

YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then confirm that the

malfunction symptom is eliminated.

STEP 4. Check for open circuit and short circuit to ground
between ECM connector B-10 (terminal No. 36) and engine
oil pressure switch connector B-16 (terminal No. 1)
NOTE: Check harness after checking intermediate connector
B-24. If intermediate connector is damaged, repair or replace it.
After to GROUP 00E, Harness Connector Inspection

P.00E-2

.

Then check that the malfunction is eliminated.
Q: Is the harness wire in good condition?

YES : Replace the ECM. When the ECM is replaced,

register the ID code. Refer to GROUP 42B, Diagnosis
− ID Code Registration Judgment Table <Vehicles

with KOS>

P.42B-15

or GROUP 42C, Diagnosis

− ID

Codes Registration Judgment Table <Vehicles with
WCM>

P.42C-10

. Then confirm that the malfunction

symptom is eliminated.

NO : Repair it. Then confirm that the malfunction symptom

is eliminated.

STEP 5. Check harness connector B-10 ECM connector for
damage.
Q: Is the 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.

1

AK700522AB

B-16 harness
connector:
component side

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-817

STEP 6. Check for harness damage between ECM
connector B-10 (terminal No. 36) and engine oil pressure
switch connector B-16 (terminal No. 1)
NOTE: Check harness after checking intermediate connector
B-24. If intermediate connector is damaged, repair or replace it.
After to GROUP 00E, Harness Connector Inspection

P.00E-2

.

Then check that the malfunction is eliminated.
Q: Is the harness wire in good condition?

YES : Replace the engine oil pressure switch. Then confirm

that the malfunction symptom is eliminated.

NO : Repair it. Then confirm that the malfunction symptom

is eliminated.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-818

DATA LIST REFERENCE TABLE

M1131152005194

CAUTION

• When shifting the selector lever to D range, the brakes should be applied so that the vehicle does

not move forward.

• Driving tests always need two persons: one driver and one observer.

NOTE: *

1

: In a new vehicle [driven approximately 500 km (311 mile) or less], the mass airflow sensor output

value is sometimes 10% higher than the standard value.
NOTE: *

2

: The injector drive time represents the time when the cranking speed is at 250 r/min or below when

the power supply voltage is 11 volts.
NOTE: *

3

: In a new vehicle [driven approximately 500 km (311 mile) or less], the injector drive time is some-

times 10% longer than the standard time.
NOTE: *

4

: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF"

position but this is no problem for checks.
NOTE: *

5

: Data items are displayed on M.U.T.-III display, but the in-line 4 engine is not applicable and its data

is displayed as "N/A".
NOTE: *

6

: Data items are displayed on the scan tool display, but the electric power steering is not mounted.

The data are displayed as "0 A".

M.U.T.-III
SCAN TOOL
DISPLAY

ITEM
NO.

INSPECTION ITEM INSPECTION REQUIREMENT

NORMAL
CONDITION

INSPECTION
PROCEDURE
NO.

REFERENCE
PAGE

A/C
compress
or relay

93

A/C
compressor
clutch relay

• Engine: warming up, idling

• A/C switch: "OFF"

OFF

Procedure
No. 26

P.13A-812

• Engine:

warming up,
idling

• A/C switch:

"ON"

A/C
compressor
clutch is not
operating

OFF

A/C
compressor
clutch is
operating

ON

A/C SW

76

A/C switch

• Engine: warming up, idling

• A/C switch: "OFF"

OFF

Procedure
No. 26

P.13A-812

• Engine:

warming up,
idling

• A/C switch:

"ON"

A/C
compressor
clutch is not
operating

OFF

A/C
compressor
clutch is
operating

ON

Absolute
load value

72

Absolute load
value

Engine: warming
up

Engine is
idling

10

− 20 %

−

−

2,500 r/min

10

− 20 %

Revving
engine

Load value
increases
according to
amount of
revving.