LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> Supra Base, 2.0L Eng VIN 2 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (B46) - Service Information >> ECM >> Installation [07/2020 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation [07/2020 - ]: Procedure

  1. INSTALL ECM 
    1. Feed in and install ECM (2).

      HINT: 

      The locks (1) must engage audibly.

      GTY946427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect all connectors (1) and lock.

      HINT: 

      All connectors must engage audibly.

      GTY946423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the engine room ECU cover (2).

      HINT: 

      The snap-lock couplings (1) must engage audibly.

      GTY945959Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 

    Refer to INSTALLATION [07/2020 - ]

  3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 40

  4. ENCODE/PROGRAM CONTROL UNIT(S) 
    NOTE:
    • Use the most recent software version to prevent faults during programming/encoding.
    • The battery voltage must not drop below 13.0 V during programming.
    • Use only recommended chargers for a low-voltage vehicle electrical system.
    • Do not exceed the maximum charging voltage of 14.8 V when charging the battery.
    • When there is communication abnormality in the middle of work, control unit might be damaged.
    • It may be necessary to perform the Action Plan several times.
    1. Connect the battery charger to the vehicle.
    2. Connect the diagnosis system with the vehicle.
    3. Determine the action plan.

      Service plan / Programming plan / Action plan / Calculate action plan

    4. Accept and fully process the measures plan.

      Service plan / Programming plan / Action plan / Perform action plan

    5. Wait until programming/encoding has been completed.
      NOTE:

      When there is communication abnormality in the middle of work, control unit might be damaged.

    6. Carry out vehicle test.

      Vehicle management / Troubleshooting / Fault memory / Calculate test plan

    7. Delete the fault memory.

      Vehicle management / Troubleshooting / Fault memory / Delete fault memory

    8. Disconnect the diagnosis system from the vehicle.
    9. Disconnect the battery charger from the vehicle.
  5. PERFORM INITIALIZATION 
    1. Connect the diagnosis system to the vehicle and enter the following menus:

      Vehicle management / Service functions / Drive / Engine electronics / Reset adaptations / ABL Reset adaptation values

scientia non olet · About LEMON Manuals