Inspection Procedure 13: Knocking


COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



DIAGNOSIS PROCEDURE

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

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

STEP 2. Visual check of ignition spark.

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

Q. Is the check result normal?

    Check detonation sensor system.
    (Refer to Code No.P0327: Right Bank Detonation Sensor Circuit Low Input ).
    (Refer to Code No.P0328: Right Bank Detonation Sensor Circuit High Input ).
    (Refer to Code No.P0332: Left Bank Detonation Sensor Circuit Low Input ).
    (Refer to Code No.P0333: Left Bank Detonation Sensor Circuit High Input ).
Check Inspection Procedure - ignition circuit system (Refer to ).