HYBRID VEHICLE CONTROL ECU REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during hybrid vehicle control ECU removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedures Effect/Inoperative Function when Necessary Procedure not Performed Link
Disconnect cable from negative auxiliary battery terminal Memorize steering angle neutral point Lane departure alert system (w/ Steering Control)

Click here

Simple intelligent parking assist system*1
Toyota parking assist-sensor system*1
Pre-collision system
Initialize back door lock Power door lock control system

Click here

Replacement of hybrid vehicle control ECU Perform code registration (Immobiliser system)

  • Entry and start system

  • Wireless door lock control system

  • Hybrid control system cannot be started

 See Service Bulletin for the registration method.
*1: When performing learning using the GTS.
Click here Click here

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 notices before proceeding with work.

      Click here

    • Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.

  2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

    Click here

    Note

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

    Click here

  3. REMOVE ECU INTEGRATION BOX RH (for LHD)

    Click here

  4. REMOVE ECU INTEGRATION BOX LH (for RHD)

    Click here

  5. REMOVE HYBRID VEHICLE CONTROL ECU (for LHD)


    1. A001S0H

      Disengage the 2 claws and remove the hybrid vehicle control ECU from the ECU integration box RH.

      Note


      • If the ECU integration box RH is deformed or damaged, replace it.

      • Do not bend the 2 claws more than necessary.

  6. REMOVE HYBRID VEHICLE CONTROL ECU (for RHD)


    1. A001QFS

      Disengage the 2 claws and remove the hybrid vehicle control ECU from the ECU integration box LH.

      Note


      • If the ECU integration box LH is deformed or damaged, replace it.

      • Do not bend the 2 claws more than necessary.