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
(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
(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
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