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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 78 (Engine Control System (M20A-FKS) - Service Information (1 Of 2)) >> ECM >> Removal [06/2018 - 01/2019] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

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

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Battery terminal is disconnected/reconnected Perform steering sensor zero point calibration Lane Control System Refer to INITIALIZATION [06/2018 - 09/2022]
Pre-collision System
Lighting System (w/ AFS) (EXT)
Initialize back door lock Power Door Lock Control System Refer to INITIALIZATION [06/2018 - 09/2022]
Replacement of ECM Vehicle Identification Number (VIN) registration MIL comes on Refer to REGISTRATION [06/2018 - ]
ECU communication ID registration (Immobiliser system) Engine start function Refer to REGISTRATION [06/2018 - 01/2019]
Code registration (Smart Key System (for Start Function))
  • Wireless Door Lock Control System
  • Smart Key System (for Entry Function)
  • Smart Key System (for Start Function)
  • Steering lock function
  • Perform reset memory
  • CVT oil pressure calibration
  • Perform road test to allow TCM to learn
  • Large shift shock
  • Deterioration of fuel efficiency
Refer to INITIALIZATION [06/2018 - 09/2022] for Initialization
Refer to REGISTRATION [06/2018 - 09/2024] for Registration
NOTE:
  • After the engine switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Audio and Visual System)
  • After the engine switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Navigation System)
  • If the ECM has been struck or dropped, replace it.
  • Perform Vehicle Identification Number (VIN) registration when replacing the ECM.

    Refer to REGISTRATION [06/2018 - ]