Inspection Procedure 12: White Smoke



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

Q. Is the diagnosis code set?

Inspection chart for diagnosis code (Refer to ).
Go to Step 2.

STEP 2. Check idling condition.

Q. Is the check result normal?

Go to Step 3.
Proceed to troubleshooting for improper idling (Refer to ).

STEP 3. M.U.T.-III data list.

  • Refer to Data List Reference Table .

  1. Item 5: Barometric pressure sensor
  2. Item 6: Manifold absolute pressure sensor
  3. Item 7: Engine coolant temperature sensor
  4. Item 8: EGR gas temperature sensor
  5. Item 9: Accelerator pedal position sensor (main)
  6. Item 10: Accelerator pedal position sensor (sub)
  7. Item 16: EGR valve position sensor
  8. Item 21: Fuel temperature sensor
  9. Item 43: Intake air temperature sensor
  10. Item 45: Throttle position sensor

Q. 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 (Refer to Inspection Chart for Diagnosis Code ).

STEP 4. Check compression pressure.

  • Check compression pressure (Refer to GROUP 11E - On-vehicle Service - Compression Pressure Check ).

Q. Is the check result normal?

Go to Step 5.

STEP 5. Check the trouble symptoms.

Q. 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 ).