[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
13 -FUEL > 13A-DIRECT INJECTION AND MULTIPOINT FUEL INJECTION (DI AND MPI) > TROUBLESHOOTING > SYMPTOM PROCEDURES > THE FEELING OF IMPACT OR VIBRATION WHEN ACCELERATING.
Inspection Procedure 9: The Feeling of Impact or Vibration when Accelerating
 
 
 
 
COMMENTS ON TROUBLE SYMPTOM
  • The failure could possibly be caused by the ignition leak occurring in association with the increase in the voltage required by the spark plug during the acceleration, failed electronic-controlled throttle valve system and so on.
 
 
PROBABLE CAUSES
  • Failed electronic-controlled throttle valve system
  • Contamination around the throttle valve
  • Failed supercharging pressure control system
  • Failed variable valve timing control system
  • Failed ignition system
  • Failed CVT <CVT>
  • Failed engine-ECU
 
 
DIAGNOSIS PROCEDURE
note<CVT>
To protect the CVT, the CVT-ECU outputs, into the engine-ECU, the request signal to reduce the engine torque according to the operation condition. Based on the signal, the engine-ECU closes the throttle valve, retards the ignition or carries out fuel cut. At that time, the engine output seems to temporarily reduce, but there is no malfunction.
STEP 1. M.U.T.-IIISE diagnosis code
Is the diagnosis code set?
Inspection chart for diagnosis code (Refer to ).
NO : Go to Step 3 <M/T>.
NO : Go to Step 2 <CVT>.
 
STEP 2. M.U.T.-IIISE other system diagnosis code
noteWhen the CVT has a malfunction, the CVT-ECU might output the request signal of reducing the engine torque in order to protect the CVT.
  • Confirm whether the diagnosis code is set in the CVT-ECU.
Is the diagnosis code set?
Perform troubleshooting of CVT System (Refer to GROUP 23A - Troubleshooting - Diagnosis Code Chart ).
Go to Step 3.
 
STEP 3. M.U.T.-IIISE data list
  • Data list reference table (Refer to ).
    1. Item 11: Accelerator pedal position sensor (main)
    2. Item 12: Accelerator pedal position sensor (sub)
    3. Item 13: Throttle position sensor (main)
    4. Item 15: Throttle position sensor (sub)
    5. Item 36: Inlet V.V.T. phase angle
    6. Item 39: Exhaust V.V.T. phase angle
    7. Item 46: Waste gate duty (Motor type)
    8. Item 127: Waste gate position sensor
Are the check results normal?
Go to Step 4.
Perform the diagnosis code classified check procedure for the sensor that has shown an abnormal data value. Inspection chart for diagnosis code (Refer to ).
 
STEP 4. Check throttle body (throttle valve portion) contamination.
Is the check result normal?
Go to Step 5.
Throttle body (throttle valve area) cleaning (Refer to ).
 
STEP 5. Visual check of ignition spark.
  • Remove the spark plug and install it to the ignition coil.
  • Connect the ignition coil connector.
  • Disconnect all injector connectors.
  • At the engine start, check each spark plug produces a spark.
Is the check result normal?
Go to Step 6.
Check Inspection Procedure - ignition circuit system (Refer to ).
 
STEP 6. Check supercharging pressure.
  • Supercharging pressure check (Refer to GROUP 15 - On-vehicle Service - Supercharging Pressure Check ).
Is the check result normal?
Go to Step 7.
Repair.
 
STEP 7. Check the trouble symptom.
Does the trouble symptom persist?
Replace the engine-ECU.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).