ECM REMOVAL

PROCEDURE


  1. PRECAUTION

    Note


    • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notice before proceeding with work Click here.

    • Perform the Vehicle Identification Number (VIN) registration when replacing the ECM Click here.

    HV battery learning values are stored in the power management control ECU and ECM to illuminate the hybrid battery indicator light in the combination meter assembly. When either of these ECUs is replaced, the new ECU receives the HV battery learning value data from the other ECU and updates the information.

    Note


    • Do not replace the power management control ECU and ECM at the same time as it clears the HV battery learning values. However, if it is necessary to replace both ECUs at the same time, replace them by following the procedure below.

    • Do not replace the power management control ECU or ECM with used ones from other vehicles.


    1. Procedure when replacing both power management control ECU and ECM:


      1. Disconnect the cable from the negative (-) auxiliary battery terminal.

      2. Replace either of the ECUs.

      3. Connect the cable to the negative (-) auxiliary battery terminal.

      4. Turn the power switch on (READY) and wait for 5 minutes or more.

      5. Turn the power switch off and disconnect the cable from the negative (-) auxiliary battery terminal.

      6. Replace the other ECU.

      7. Connect the cable to the negative (-) auxiliary battery terminal.

      8. Check that the power switch can be turned on (READY).

        Tech Tips

        If the power management control ECU and ECM are replaced at the same time without following the above procedure, replace either of the ECUs with its original one and then replace it again by following the above procedure. If the correct procedure is not followed, perform the procedure again from the beginning.

  2. REMOVE DECK BOARD ASSEMBLY

    Click here

  3. REMOVE NO. 1 DECK BOARD

    Click here

  4. REMOVE NO. 2 DECK BOARD

    Click here

  5. REMOVE REAR DECK FLOOR BOX

    Click here

  6. REMOVE DECK FLOOR BOX RH

    Click here

  7. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

    Note

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

  8. REMOVE INVERTER WITH CONVERTER ASSEMBLY

    Click here

  9. SEPARATE INVERTER RESERVE TANK ASSEMBLY


    1. A0059OR

      Remove the 2 bolts and separate the inverter reserve tank assembly.

  10. REMOVE ECM


    1. Remove the No. 1 relay block cover.

    2. A005CII

      Disconnect the 3 wire connectors.

    3. A005D3K

      Disengage the 2 claws, push up the engine room wire harness and separate it from the engine room relay block.

    4. A005D5S

      Disengage the 2 claws and push up the side cover to remove it.

    5. A005BHX

      Loosen the bolt and separate the No. 2 engine room wire.

    6. Disconnect the 2 ECM connectors.


      1. A005C49

        Disconnect the 2 wire harness clamps.

      2. Push the locks on the 2 levers, then raise the levers, and disconnect the 2 ECM connectors.

        Note

        After disconnecting the connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the connectors.

    7. A005ADN

      Separate the 2 wire harness clamps.

    8. A005B53

      Remove the 2 bolts and ECM.