Mitsubishi Outlander (2013+). Manual - part 298
TROUBLESHOOTING
MULTIPOINT FUEL INJECTION (MPI)
13A-73
STEP 3. Check harness between engine control
relay connector terminal and No. 1 injector
connector terminal power supply line.
• Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 4
NO :
Repair or replace the connector, or repair
the damaged harness wire.
STEP 4. Check harness between No. 1 injector
connector terminal and engine-ECU connector
terminal INJ1.
• Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 5
NO :
Repair or replace the connector, or repair
the damaged harness wire.
STEP 5. Check compression pressure of No. 1
cylinder.
• Check the compression pressure (Refer to
GROUP 11A
− On-vehicle Service − Compres-
sion Pressure Check .
Q: Is the check result normal?
YES :
Go to Step 6
NO :
Repair.
STEP 6. M.U.T.-III diagnosis code
• Reconfirmation of diagnosis code.
Q: Is the diagnosis code set?
YES :
Replace the engine-ECU.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunctions
).
Code No. P0302: No. 2 Cylinder Misfire Detected
OPERATION
• Check code No. P0264: No. 2 injector circuit low
input (Refer to
).
• Check code No. P0265: No. 2 injector circuit high
input (Refer to
).
FUNCTION
• If a misfire occurs while the engine is running, the
engine speed changes for an instant.
• The engine-ECU checks for such changes in
engine speed.
TROUBLE JUDGMENT
Check Conditions
• Engine speed is more than 440 r/min and is less
than 4,500 r/min.
• Engine coolant temperature is more than −10°C.
(However, 20
°C when the engine coolant temper-
ature at engine start is -10
°C or less).
• Barometric pressure is more than 76 kPa.
• Volumetric efficiency is more than 20 % and is
less than 60 %. <4B11>
• Volumetric efficiency is more than 30 % and is
less than 60 %. <4B12>
• Adaptive learning is complete for the vane which
generates a crankshaft position signal.
• While the engine is running, excluding gear shift-
ing, deceleration, sudden acceleration/decelera-
tion and A/C compressor switching.
• The throttle deviation is -0.06 V/10 ms to +0.06
V/10 ms.
Judgement Criterion (change in the angular
acceleration of the crankshaft is used for mis-
fire detection).
• Misfire has occurred more frequently than
allowed during the last 200 revolutions (when the
catalyst temperature is more than 1,000
°C).
or
• Misfire has occurred a predetermined value (2%)
or more in the first 1,000 revolutions from engine
start-up (corresponding to 1.5 times the limit of
emission standard).
or
• After the first 1,000 revolutions, the following cri-
terion is safisfied 4 times cumulatively.
• Misfire counts per 1,000 revolutions exceeds a
predetermined value (2%) (corresponding to 1.5
times the limit of emission standard).
FAIL-SAFE AND BACKUP FUNCTION
• The supply of fuel to the misfiring cylinder can
possibly be cut.
PROBABLE CAUSES
• Ignition system related part(s) failed
• Failed No. 2 injector
• Harness damage in No. 2 injector circuit
• Low compression pressure
• Failed engine-ECU