Mitsubishi Outlander GS45X. Manual - part 801

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-137

STEP 3. Check for harness damage between the mass 
airflow sensor connector A-07 and the ECM connector 
B-11.
(1) Disconnect the mass airflow sensor connector A-07 and the 

ECM connector B-11.

(2) Measure the resistance between the mass airflow sensor 

connector A-07 and the ECM connector B-11.

a. Connector A-07 (terminal No. 3) and Connector B-11 

(terminal No. 87).

b. Connector A-07 (terminal No. 4) and Connector B-11 

(terminal No. 88).

• Should be less than 2 ohms.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 4.
NO :  Repair it. Then go to Step 6.

STEP 4. Check for harness the MFI relay connector A-33X 
(terminal No. 2) and the mass airflow sensor connector 
A-07 (terminal No. 2).
(1) Disconnect the MFI relay connector A-33X and the mass 

airflow sensor connector A-07.

(2) Measure the resistance between the MFI relay connector 

A-33X (terminal No. 2) and the mass airflow sensor A-07 
(terminal No. 2).

• Should be less than 2 ohms.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 5.
NO :  Repair it. Then go to Step 6.

AK700192

82 81 80 79 78 77 76 75 74 73 72 71

94 93 92 91 90 89 88 87 86 85 84 83

99 98 97 96 95

100

101

102

103

104

105

106

112

113

114

109 108

107

110

111

115

116

117

118

2

1

3

4

A-07 harness connector:
component side 

B-11 harness connector:
component side 

AB

AK700193

2

1

3

4

3

1

2

4

A-33X harness 
connector:
component side 

AB

A-07 harness connector:
component side 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-138

STEP 5. Replace the mass airflow sensor.
(1) Replace the mass airflow 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 P0101 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 6.

NO :  The inspection is complete.

STEP 6. 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 P0101 set?

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-139

DTC P0102: Mass Airflow Circuit Low Input

AK700133

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

1

3

2

4

3 4

2

1

AB

MASS AIRFLOW SENSOR CIRCUIT

87

88

MASS AIRFLOW SENSOR

3

2

HEAT
SENSITIZING
RESISTANCE

BLUE

A-07

(MU805110)

BLA

CK-WHITE

4

20A

WHITE

WHITE

WHITE

A-33X

4

3

1

2

22

B-11

36

FUSIBLE LINK

OFF

ON

RELAY BOX
(ENGINE COMPARTMENT)

TO ECM

ENGINE
CONTROL
MODULE

MFI
RELAY

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-140

.

CIRCUIT OPERATION

• The mass airflow sensor power is supplied from 

the MFI relay (terminal No. 2), and the ground is 
provided on the ECM (terminal No. 88).

• A voltage that is according to the mass airflow 

rate is sent to the ECM (terminal No. 87) from the 
mass airflow sensor output terminal (terminal No. 
3).

.

TECHNICAL DESCRIPTION

• While the engine is running, the mass airflow 

sensor outputs voltage which corresponds to the 
mass airflow rate.

• The ECM checks whether the voltage output by 

the mass airflow sensor while the engine is run-
ning is within a specified range.

.

DESCRIPTIONS OF MONITOR METHODS

Mass airflow 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)

• Not applicable

.

AK700399AB

MFI relay

A-33X

Connector: A-33X

AK700406

AB

Mass airflow
sensor

A-07 (GR)

Connector: A-07

AK700402AB

ECM

B-11 (GR)

Connector: B-11