Mitsubishi Outlander GS45X. Manual — part 799
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-129
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (M.U.T.-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958, read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the diagnostic trouble code other than P0069 set?
YES : Refer to Diagnostic Trouble Code Chart
.
NO : Go to Step 2.
AK700568AB
MB991824
MB991827
MB991910
Data link
connector
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-130
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 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 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) <3.0L ENGINE>
13B-131
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) <3.0L ENGINE>
13B-132
DTC P0101: Mass Airflow Circuit Range/Performance Problem
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
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