Mitsubishi Outlander GS45X. Manual — part 574
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-119
STEP 2. 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 : Go to Step 3.
NO : Refer to, DTC P0106
− Manifold Absolute Pressure
Circuit Range/Performance Problem
, DTC
P0107
− Manifold Absolute Pressure Circuit Low
Input
− Manifold Absolute
Pressure Circuit High Input
STEP 3. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Start the engine.
(4) Turn the ignition switch to "LOCK" (OFF) position and then
wait 2 seconds.
(5) Turn the ignition switch to the "ON" position.
(6) Set scan tool MB991958, read the DTC.
(7) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0069 set?
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 go to Step 4.
NO : 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
.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-120
STEP 4. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Start the engine.
(4) Turn the ignition switch to "LOCK" (OFF) position and then
wait 2 seconds.
(5) Turn the ignition switch to the "ON" position.
(6) Set scan tool MB991958, read the DTC.
(7) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0069 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-121
DTC P0101: Mass Airflow Circuit Range/Performance Problem
AK604114
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
AC
MASS AIRFLOW SENSOR CIRCUIT
MASS AIRFLOW SENSOR
87
88
3
2
HEAT
SENSITIZING
RESISTANCE
BLUE
A-07
(MU805110)
4
20A
WHITE
WHITE
WHITE
A-33X
4
3
1
2
22
B-11
36
FUSIBLE LINK
OFF
ON
RELAY BOX
(ENGINE COMPARTMENT)
ENGINE
CONTROL
MODULE
TO ECM
MFI
RELAY
BLA
CK-WHITE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-122
.
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 electric current which corre-
sponds to the mass airflow rate.
• The ECM converts the electric current into the
voltage and checks whether the voltage is within
a specified range while the engine is running.
.
DESCRIPTIONS OF MONITOR METHODS
Compare load value with mass airflow sensor output
voltage.
.
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)
• Throttle position sensor
.
AK704096
AB
Air cleaner
assembly
Mass airflow sensor
Connector: A-07
A-07 (GR)
AK704088
MFI relay
AB
Connector: A-33X
A-33X
AK704097AB
Connector: B-11
B-11 (GR)
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