Inspection Procedure 13. The Feeling of Impact or Vibration when Accelerating


COMMENT ON TROUBLE SYMPTOM



PROBABLE CAUSE



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Q. Diagnosis code set?
Inspection chart for diagnosis code (Refer to ).
Go to Step 2 .

STEP 2. M.U.T.-III data list

  • Refer to Data List Reference Table .

    1. Item 14: Throttle position sensor (sub)
    2. Item 77: Accelerator pedal position sensor (sub)
    3. Item 78: Accelerator pedal position sensor (main)
    4. Item 79: Throttle position sensor (main)

Q. Are the check results normal?
Go to Step 3 .
Perform the diagnosis code classified check procedure for the sensor that has shown an abnormal data value (Refer to Inspection Chart for Diagnosis Code ).

STEP 3. Check throttle body (throttle valve portion) for contamination.

Q. Is the check result normal?

Go to Step 4 .
Clean throttle body (throttle valve portion) (Refer to )

STEP 4. Check spark plug.

Q. Is the check result normal?

Go to Step 5 .
Replace spark plug.

STEP 5. Check ignition coil spark.

Q. Is the check result normal?
Replace engine-ECU <M/T> or engine-A/T-ECU <A/T>.
Check ignition circuit system (Refer to Inspection Procedure 26 ).