Mitsubishi Outlander GS45X. Manual - part 807

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-161

STEP 5. Check for open circuit and short circuit to ground 
between manifold absolute pressure sensor connector 
B-105 and ECM connector B-10.
(1) Disconnect the manifold absolute pressure sensor 

connector B-105 between the ECM connector B-10.

(2) Measure the resistance between the manifold absolute 

pressure sensor connector B-105 (terminal No. 2) and the 
ECM connector B-10 (terminal No. 45).

• Should be less than 2 ohms.

(3) Check for the continuity between the manifold absolute 

pressure sensor B-105 (terminal No. 2) and ground.

• Not continuity.

Q: Is the harness in good condition?

YES : Go to Step 6.
NO :  Repair it. Then go to Step 7.

STEP 6. Replace the manifold absolute pressure sensor.
(1) Replace the manifold absolute pressure sensor.
(2) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Pattern 7 

P.13B-11

.

(3) Check the diagnostic trouble code (DTC).
Q: Is DTC P0107 set?

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

register the ID code. Refer to GROUP 42B, Diagnosis 
− ID Codes 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 7.

NO :  The inspection is complete.

AK900592

16 15 14 13 12 11 10 9 8 7 6 5 4 3

2

1

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

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

3 2 1

AB

B-105 harness
connector:
component side 

B-10 harness
connector:
component side 

AK900593

3 2 1

AB

B-105 harness
connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-162

STEP 7. 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.13B-11

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0107 set?

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

DTC P0108: Manifold Absolute Pressure Circuit High Input

AK900131

1

2

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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

1 2 3

AD

ENGINE
CONTROL
MODULE

5 V

MANIFOLD ABSOLUTE 
PRESSURE SENSOR

BLUE

YELLO

W

-BLA

CK

GRA

Y

-BLUE

1

2

3

MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT

44

46

45

B-10

B-105

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-163

.

CIRCUIT OPERATION

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

lute pressure sensor power terminal (terminal No. 
3) from ECM (terminal No. 44). The ground termi-
nal (terminal No. 2) is grounded with ECM (termi-
nal 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

.

AK900132

AD

B-105 (B)

Connector: B-105

Manifold absolute
pressure sensor

AK700401AB

ECM

B-10 (GR)

Connector: B-10

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-164

DTC SET CONDITIONS Range/Performance problem - low input

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.

Judgement Criterion

• Manifold absolute pressure is 117 kPa (34.6 

in.Hg) or higher for 2 seconds.

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function 

− OBD-II Drive Cycle − 

Pattern 22 

P.13B-11

.

.

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

• Manifold absolute pressure sensor failed.

• Connector damage

• Harness 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

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