Inspection Procedure 6: Starting impossible (Starter operative but No initial combustion)


COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Check battery voltage.

  • Measure battery voltage at cranking.
OK: 8 V or higher

Q. Is the check result normal?
Go to Step 2 .
Check battery (Refer to GROUP 54A - Battery - On-vehicle Service - Battery Test ).

STEP 2. M.U.T.-III diagnosis code

Q. Is the check result normal?
Inspection chart for diagnosis code (Refer to ).
Go to Step 3 .

STEP 3. M.U.T.-III actuator test

  • Item 09: Fuel pump
OK: Operating sound of fuel pump can be heard

Q. Is the check result normal?
Go to Step 4 .
Check fuel pump system (Refer to Inspection Procedure 21 ).

STEP 4. Check timing belt for breakage.

  • Engine: Cranking
OK: Camshaft rotates

Q. Is the check result normal?
Go to Step 5 .
Replace the timing belt.

STEP 5. Check throttle body (throttle valve portion) contamination.

Q. Is the check result normal?
Go to Step 6 .
Clean throttle body (throttle valve portion) (Refer to ).

STEP 6. M.U.T.-III data list

  • Refer to Data List Reference Table .

    1. Item 02: Crank angle sensor

Q. Is the check result normal?
Go to Step 7 .
Check crank angle sensor system (Refer to Code No. P0335 ).

STEP 7. Visual check of ignition spark.

  • Remove the spark plug and install to the ignition coil.
  • Connect the ignition coil connector.
  • Remove all injector connectors.
  • At the engine start, check each spark plug procedure a spark.

Q. Is the check result normal?
Go to Step 9 .
Go to Step 8 .

STEP 8. Check spark plug

  • Check spark plug itself (Refer to GROUP 16 - Ignition System - On-vehicle Service ).

Q. Is the check result normal?
Check ignition circuit system (Refer to Inspection Procedure 26 ).
Replace the spark plug.

STEP 9. Check injector for operating sound.

  • Check injector for operating sound at engine cranking (Refer to ).

Q. Is the check result normal?
Go to Step 10 .

    Check the injector system of the defective cylinder.
    (Refer to Code No. P0201: No. 1 Injector System ).
    (Refer to Code No. P0202: No. 2 Injector System ).
    (Refer to Code No. P0203: No. 3 Injector System ).
    (Refer to Code No. P0204: No. 4 Injector System ).
    (Refer to Code No. P0205: No. 5 Injector System ).
    (Refer to Code No. P0206: No. 6 Injector System ).

STEP 10. Fuel pressure measurement.

  • Fuel pressure measurement (Refer to ).

Q. Is the check result normal?
Go to Step 11 .
Repair.

STEP 11. Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.

  • After the engine-ECU <M/T> or engine-A/T-ECU <A/T> has been replaced, check for the trouble symptom again.

Q. Does trouble symptom persist?
Check for foreign matters (water, kerosene, etc.) in fuel and replace if necessary.
Check end.