Mitsubishi Outlander GS45X. Manual — part 581

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-147

STEP 12. Using scan tool MB991958, check data list item 8:
Manifold Absolute Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the data reading mode for item

8, Manifold Absolute Pressure Sensor.

• When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).

• When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).

• When altitude is 1,200 m (3,937 feet), 88 kPa (26.0

in.Hg).

• When altitude is 1,800 m (5,906 feet), 81 kPa (23.9

in.Hg).

(3) Start the engine.

• When the engine is idling, 16 − 36 kPa (4.7 − 10.6

in.Hg).

• When the engine is suddenly revved, manifold absolute

pressure varies.

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

YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

− How to

Cope with Intermittent Malfunctions

P.00-15

.

NO : 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 go to Step 13.

STEP 13. 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 − Pattern 7

P.13A-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0106 set?

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-148

DTC P0107: Manifold Absolute Pressure Circuit Low Input

.

AK704098

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 36 37 38 39 40 41 42 43 44 45 46 47 48

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

3

2

1

AB

MANIFOLD ABSOLUTE
PRESSURE SENSOR

BLUE

3

1

2

MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT

B-10

B-105

(MU802723)

44

45

46

ENGINE
CONTROL
MODULE

YELLO

W

-BLA

CK

GRA

Y

-BLUE

AK704090AB

Connector: B-10

B-10 (GR)

AK704099 AB

Intake manifold

Connector: B-105

B-105 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

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CIRCUIT OPERATION

• A 5-volt voltage is supplied to the manifold abso-

lute pressure sensor power terminal (terminal No.
3) from the ECM (terminal No. 44). The ground
terminal (terminal No. 2) is grounded with ECM
(terminal No. 46).

• A voltage that is proportional to the intake mani-

fold pressure is sent to the ECM (terminal No. 45)
from the manifold absolute pressure sensor out-
put terminal (terminal No. 1).

.

TECHNICAL DESCRIPTION

• The manifold absolute pressure sensor outputs a

voltage which corresponds to the intake manifold
pressure.

• The ECM checks whether this voltage is within a

specified range.

.

DESCRIPTIONS OF MONITOR METHODS

Manifold absolute pressure sensor output voltage is

out of specified range.

.

MONITOR EXECUTION

Continuous

.

MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Engine coolant temperature sensor

• Throttle position sensor

• Mass airflow sensor

• Intake air temperature sensor

• Barometric pressure sensor

.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-150

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

• 8 minutes or more have passed since the engine

starting sequence was completed, when the
engine coolant temperature at engine start is 0

°C

(32

°F) or lower.

• Volumetric efficiency is higher than 20 percent.

Judgement Criterion

• Manifold absolute pressure sensor output voltage

has continued to be 0.2 volt [corresponding to a
manifold absolute pressure of 5 kPa (1.5 in.Hg)]
or lower for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERN

• Refer to Diagnostic Function − OBD-II Drive

Cycle

− Pattern 7

P.13A-11

.

.

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

• Manifold absolute pressure sensor failed.

• Open or shorted manifold absolute pressure sen-

sor circuit, 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

• MB992110: Power Plant ECU Check Harness

Yes

Yes

Yes

Yes

No

No

No

No

Monitoring

conditions

Pressure

< 5kPa (1.5in.Hg)

Pressure

> 117kPa (34.6in.Hg)

Continuous

failure for 2secs

Malfunction

End

Good

Start

AK604313