Mitsubishi Galant 9G. Manual — part 742
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-410
STEP 4. Using scan tool MB991958, check data list item 13:
Intake Air Temperature Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the data reading mode for item
13, Intake Air Temperature Sensor.
• The intake air temperature and temperature shown with
the scan tool should approximately match.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 5.
NO : Refer to DTC P0111
− Intake Air Temperature Circuit
Range/Performance Problem
, DTC P0112
− Intake Air Temperature Circuit Low Input
, DTC P0113
− Intake Air Temperature
.
STEP 5. Using scan tool MB991958, check data list item 21:
Engine Coolant Temperature Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the data reading mode for item
21, Engine Coolant Temperature Sensor.
• The engine coolant temperature and temperature
shown with the scan tool should approximately match.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 6.
NO : Refer to DTC P0116
− Engine Coolant Temperature
Circuit Range/Performance Problem
, DTC
P0117
− Engine Coolant Temperature Circuit Low
, DTC P0118
− Engine Coolant
Temperature Circuit High Input
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-411
STEP 6. Using scan tool MB991958, check data list item 25:
Barometric Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the data reading mode for item
25, Barometric 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) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : Go to Step 7.
NO : Refer to, DTC P2228
− Barometric Pressure Circuit
Low Input
, DTC P2229
− Barometric
Pressure Circuit High Input
STEP 7. Using scan tool MB991958, check data list item 95:
Manifold Absolute Pressure Sensor.
(1) Turn the ignition switch the "ON" position.
(2) Set scan tool MB991958 to the data reading mode for item
95, 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 8.
NO : Refer to DTC P0106
− Manifold Absolute Pressure
Circuit Range/Performance Problem
, DTC
P0107
− Manifold Absolute Pressure Circuit Low
, DTC P0108
− Manifold Absolute
Pressure Circuit High Input
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-412
STEP 8. Check harness connector B-01, B-27 at injector for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 15.
STEP 9. Check the cylinder 1, 4 injector.
(1) Disconnect the cylinder 1, 4 injector connector B-01, B-27.
(2) Measure the resistance between each injector side
connector terminal No. 1 and No. 2.
Standard value: 10.5
− 13.5 ohms [at 20°C (68°F)]
Q: Is the measured resistance between 10.5 and 13.5 ohms
[at 20
°C (68°F)]?
YES : Go to Step 10.
NO : Replace the injector. Then go to Step 15.
M
1
2
AK303822
B-01 (GR)
B-27 (GR)
CONNECTORS: B-01, B-27
AB
HARNESS CONNECTOR:
COMPONENT SIDE
M
1
2
AK303822
B-01 (GR)
B-27 (GR)
CONNECTORS: B-01, B-27
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-413
STEP 10. Check harness connector B-23 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 15.
127 126 125 124 123 122 121
133 132 131 130 129 128
140 139 138 137 136 135 134
146 145 144 143 142 141
153 152 151 150 149 148 147
AK303058
HARNESS CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-23
B-23
PCM
AB
AIR CLEANER
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