Posted in MMC L200

P1203 – Capacitor Insufficient Charging MMC L200 IV

 Posted by  Posted on September 29, 2020

FUNCTION

  • The engine-ECU monitors the charged state of the capacitor in the injector drive circuit.
  • The engine-ECU checks whether the injector driving voltage is too low due to insufficient charging of the capacitor.

    • TROUBLE JUDGEMENT

  • Ignition switch is in “ON” position
  • Except during the engine cranking period
  • Battery positive voltage is 8 V or more
  • A capacitor in low charge state (40 V or less) is detected in an engine-ECU internal circuit.

    • PROBABLE CAUSE

  • Failed engine-ECU

    • DIAGNOSIS PROCEDURE

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

  • After erasing the diagnosis code through M.U.T.-III, ignition switch is “ON” position and confirm whether the diagnosis code is stored.

    • Q. Is the diagnosis code stored?

    Author: admin