Mitsubishi Outlander GS45X. Manual — part 599
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-219
DESCRIPTIONS OF MONITOR METHODS
• If the air-fuel ratio detection signal has an abnor-
mality although the linear air-fuel ratio sensor is
sufficiently ready to operate, the DTC is stored as
a malfunction.
.
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)
• Linear air-fuel ratio sensor heater monitor
• Misfire monitor
• Fuel system monitor
Sensor (The sensor below is determined to be
normal)
• Mass airflow sensor
• Engine coolant temperature sensor
• Intake air temperature sensor
• Barometric pressure sensor
• Throttle position sensor
• Accelerator pedal position sensor
.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-220
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• Battery positive voltage is between 10 and 16.5
volts.
• More than 220 seconds have passed since the
engine starting sequence was completed.
Judgement Criteria
• The negative circuit voltage subtracted from the
pumping circuit voltage is be lower than
−2.1
volts or higher than 2.3 volts for 12 seconds.
• The pumping current is be lower than 0 milli
ampere or higher than 0 milli ampere for 12 sec-
onds.
.
OBD-II DRIVE CYCLE PATTERN
• Refer to Diagnostic Function − OBD-II Drive
Cycle
− Pattern 22
.
.
End
No
No
No
Malfunction
(Positive circuit continuity)
Malfunction
(Circuit over voltage)
Good
Voltage diff*
> 2.3 V or < -2.1 V
*: Pumping circuit voltage
- Negative circuit voltage
AK900360
No
Start
Yes
Yes
Yes
Pumping current
= 0 mA
No
Yes
Yes
Continuous failure
for 2secs?
Continuous failure
for 12secs?
Monitoring
conditions
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-221
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)
• Linear air-fuel ratio sensor failed.
• 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
STEP 1. Check harness connector C-142 at linear air-fuel
ratio sensor and harness connector B-10 at ECM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 2.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then go to Step 4.
STEP 2. Test the OBD-II drive cycle.
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 and delete the
DTC.
(3) Carry out the test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Pattern 22
(4) Check the diagnostic trouble code (DTC).
Q: Is DTC P0130 set?
YES : Then go to Step 3.
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
.
AK700568AB
MB991824
MB991827
MB991910
Data link
connector
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-222
STEP 3. Replace the linear air-fuel ratio sensor.
(1) Replace the linear air-fuel ratio sensor.
(2) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Pattern 22
(3) Check the diagnostic trouble code (DTC).
Q: Is DTC P0130 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 : The inspection is complete.
STEP 4. 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 22
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0130 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
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