Mitsubishi Outlander (2013+). Manual - part 299
TROUBLESHOOTING
MULTIPOINT FUEL INJECTION (MPI)
13A-77
STEP 5. Check compression pressure of No. 4
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. P0327: Detonation Sensor Circuit Low Input
OPERATION
• A power voltage of 5 V is applied to the detona-
tion sensor terminal from the engine-ECU con-
nector terminal K/S.
• The power voltage is earthed to the engine-ECU
connector terminal K/SE from the detonation sen-
sor connector terminal.
FUNCTION
• The detonation sensor detects the vibration of the
cylinder block caused by detonation waves, and
inputs a signal to the engine-ECU.
• In response to the signal, the engine-ECU pro-
vides controls to retard the ignition timing when
the detonation occurs.
TROUBLE JUDGMENT
Check Condition
• More than 2 seconds have passed since the
engine starting sequence was completed.
Judgement Criterion
• Detonation sensor output voltage is less than 0.5
V for 2 seconds.
FAIL-SAFE AND BACKUP FUNCTION
• Fix the ignition timing with an allowance against
detonation.
PROBABLE CAUSES
• Failed detonation sensor
• Open/short circuit or harness damage in detona-
tion sensor circuit or loose connector contact
• Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check harness between detonation
sensor connector terminal and engine-ECU
connector terminal K/SE.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Repair or replace the connector, or repair
the damaged harness wire.
STEP 2. Check harness between detonation
sensor terminal and engine-ECU connector
terminal K/S.
• Check power line for open/short circuit and dam-
age.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair or replace the connector, or repair
the damaged harness wire.
STEP 3. M.U.T.-III diagnosis code
• Reconfirmation of diagnosis code.
Q: Is diagnosis code set?
YES :
Go to Step 4.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunctions
).
STEP 4. Replace the detonation sensor
• After replacing the detonation sensor, reconfirm
whether the diagnosis code is set.
Q: Is the diagnosis code set?
YES :
Replace the engine-ECU.
NO :
Check end.