Mitsubishi Outlander GS45X. Manual — part 585
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-163
.
Check Conditions
• Engine coolant temperature is higher than 76°C
(169
°F).
• Repeat 2 or more times: drive
*1
, stop
*2
.
Drive
*1
: vehicle speed higher than 50 km/h (31
mph) lasting a total of more than 60 seconds.
Stop
*2
: vehicle speed lower than 1.5 km/h (1.0
mph) lasting more than 30 seconds.
Judgement Criterion
• Changes in the intake air temperature is lower
than 1
°C (1.8°F).
.
OBD-II DRIVE CYCLE PATTERN
• Refer to Diagnostic Function − OBD-II Drive
Cycle
− Pattern 8
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
• Intake air temperature sensor failed.
• Intake air temperature sensor circuit harness
damage, or connector damage.
• ECM failed.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-164
STEP 1. Using scan tool MB991958, check data list item 5:
Intake Air Temperature Sensor.
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) Remove the mass airflow sensor from the air intake hose.
(3) Turn the ignition switch to the "ON" position.
(4) Set scan tool MB991958 to the data reading mode for item
5, Intake Air Temperature Sensor.
(5) Heating the sensor using a hair drier.
• The indicated temperature increases.
NOTE: Do not allow it to increase over 80
°
C (176
°
F).
(6) Turn the ignition switch to the "LOCK" (OFF) position.
(7) Attach the mass airflow sensor.
Q: Is the sensor operating properly?
YES : 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
.
NO : Go to Step 2.
AK700568AB
MB991824
MB991827
MB991910
Data link
connector
AK302200 AC
Intake air
temperature
sensor
Mass airflow
sensor
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-165
STEP 2. Check the intake air temperature sensor.
(1) Disconnect the intake air temperature sensor connector
A-07.
(2) Measure the resistance between intake air temperature
sensor side connector terminal No. 1 and No. 4.
(3) Measure resistance while heating the sensor using a hair
drier.
Standard value:
13
− 17 kΩ [at −20°C (−4°F)]
5.4
− 6.7 kΩ [at 0°C (32°F)]
2.3
− 3.0 kΩ [at 20°C (68°F)]
1.0
− 1.5 kΩ [at 40°C (104°F)]
0.56
− 0.76 kΩ [at 60°C (140°F)]
0.31
− 0.45 kΩ [at 80°C (176°F)]
Q: Is the measured resistance at the standard value?
YES : Go to Step 3.
NO : Replace the mass airflow sensor. Then go to Step 9.
STEP 3. Check harness connector A-07 at the intake air
temperature sensor for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then go to Step 9.
STEP 4. Check the continuity at intake air temperature
sensor harness side connector A-07.
(1) Disconnect the connector A-07 and measure at the harness
side.
(2) Check for the continuity between terminal No. 4 and
ground.
• Continuity (2 ohms or less)
Q: Does continuity exist?
YES : Go to Step 7.
NO : Go to Step 5.
1
2
3 4
AK604486AB
Intake air temperature
sensor connector
AK604487AB
Intake air
temperature
sensor
2
1
3
4
AK203028
A-07 harness
connector:
component side
AH
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-166
STEP 5. Check harness connector B-11 at ECM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then go to Step 9.
STEP 6. Check for harness damage between intake air
temperature sensor connector A-07 (terminal No. 4) and
ECM connector B-11 (terminal No. 88).
Q: Is the harness wire in good condition?
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 9.
NO : Repair it. Then go to Step 9.
STEP 7. Check harness connector B-11 at ECM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then go to Step 9.
STEP 8. Check for harness damage between intake air
temperature sensor connector A-07 (terminal No. 1) and
ECM connector B-11 (terminal No. 89).
Q: Is the harness wire in good condition?
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 9.
NO : Repair it. Then go to Step 9.
STEP 9. 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 8
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0111 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
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