Posted in MMC L200

P0303 – No. 3 Cylinder Injector Malfunction (No Injection) MMC L200 IV

 Posted by  Posted on September 28, 2020

FUNCTION

  • The Engine-ECU, by monitoring the variation in the engine revolution, detects the non-fuel injection state.

    • TROUBLE JUDGMENT

  • During the normal engine operation
  • Engine coolant temperature is 80°C or higher.
  • Crank angle sensor is normal.
  • The variation in the engine revolution is more than the specified value.

    • PROBABLE CAUSES

  • Failed No. 3 injector
  • No. 3 fuel injection pipe clogged
  • Failed Engine-ECU

    • DIAGNOSIS PROCEDURE

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

  • After erasing the diagnosis code through M.U.T.-III, operate the engine in the warm-up state and confirm and confirm whether the diagnosis code is set.

    • Q. Is the diagnosis code set?

    STEP 2. Check for No. 3 fuel injection pipe clogged

  • Remove the No. 3 fuel injection pipe.
  • Check whether No. 3 fuel injection pipe is clogged or not.

    • Q. Is it clogged?

    STEP 3. M.U.T.-III diagnosis code

  • After erasing the diagnosis code through M.U.T.-III, operate the engine in the warm-up state and confirm and confirm whether the diagnosis code is set.

    • Q. Is the diagnosis code set?

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