Inspection Procedure 10: Engine Does Not Revolve Up


COMMENT ON TROUBLE SYMPTOM



  • The failure could possibly be caused by the failed electronic-controlled throttle valve system, faulty fuel system, defective ignition system and so on.

PROBABLE CAUSES



  • Failed ignition system
  • Failed fuel system
  • Failed electronic-controlled throttle valve system
  • Timing chain not in place
  • Failed engine-ECU

DIAGNOSIS PROCEDURE

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. M.U.T.-III data list

  • Refer to Data List Reference Table .

  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)

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 timing marks of timing chain.

Q. Is the check result normal?

Go to Step 4 .
Align timing marks.

STEP 4. 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.

Q. Is the check result normal?
Go to Step 5 .
Check ignition circuit system (Refer to Inspection Procedure 23 ).

STEP 5. Fuel pressure measurement.

  • Fuel pressure measurement (Refer to ).

Q. Is the check result normal?
Replace the engine-ECU.
Repair.