Inspection Procedure 9: Engine Does Not Revolve Up


COMMENTS 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 in out of place
  • Failed engine-ECU

DIAGNOSIS PROCEDURE

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

Q. Is diagnosis code set?
Inspection chart for diagnosis code (Refer to ).
NO : Go to Step 2 .

STEP 2. M.U.T.-III 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)

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. Inspection chart for diagnosis code (Refer to ).

STEP 3. Check timing mark on the timing chain.

Q. Is the check result normal?
Go to Step 4 .
Align the 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 Inspection Procedure - ignition circuit system (Refer to ).

STEP 5. Fuel pressure measurement.

  • Fuel pressure test (Refer to ).

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