Posted in MMC L200

P0604 – Random Access Memory (RAM) Malfunction MMC L200 IV

 Posted by  Posted on September 28, 2020

FUNCTION

  • The engine-ECU writes information to RAM or reads information from RAM.
  • The engine-ECU performs an initial check to detect errors in RAM.

    • TROUBLE JUDGEMENT

  • Ignition switch is in “ON” position.
  • A destroyed RAM is detected by engine-ECU initial check.

    • 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