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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 178 (Automatic Transaxle System (K120 / K121) - Service Information (1 Of 5)) >> Continuously Variable Transaxle Assembly >> Removal [01/2019 - 03/2019] >> 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 continuously variable transaxle assembly removal/installation are shown below.

NECESSARY PROCEDURE 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 (for Gasoline Model) Refer to INITIALIZATION [06/2018 - 09/2022]
Pre-collision System (for Gasoline Model)
Lighting System (w/ AFS) (EXT)
Initialize back door lock*3 Power Door Lock Control System (for Hatchback, Gasoline Model) 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 [01/2019 - 09/2019]
  • Replacement of engine assembly
  • Gas leak from exhaust system is repaired
Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.
Refer to INITIALIZATION [06/2018 - 09/2019]
Replacement of continuously variable transaxle assembly
  • Input transaxle compensation code into TCM
  • Perform reset memory
  • Deceleration sensor zero point calibration
  • 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
Replacement of TCM
(If transaxle compensation code read from TCM)
  • Transfer transaxle compensation code
  • Perform reset memory*1
  • Deceleration sensor zero point calibration
  • CVT oil pressure calibration
  • Perform road test to allow TCM to learn
Replacement of TCM
(If transaxle compensation code not read from TCM)
  • Reset transaxle compensation code
  • Perform reset memory*1
  • Deceleration sensor zero point calibration
  • CVT oil pressure calibration
  • Perform road test to allow TCM to learn
Replacement of ECM
  • Perform reset memory
  • CVT oil pressure calibration
  • Perform road test to allow TCM to learn
Replacement of ECM*5 Code registration (Smart Key System (for Gasoline Model, Start Function))
  • Wireless Door Lock Control System (for Gasoline Model with Smart Key System)
  • Smart Key System (for Gasoline Model, Entry Function)
  • Smart Key System (for Gasoline Model, Start Function)
  • Steering lock function
Refer to REGISTRATION [01/2019 - 09/2019]
Replacement of ECM*4 Code registration (Immobiliser system) Engine start Refer to REGISTRATION [01/2019 - 09/2019]
Suspension, tires, etc.*2 Perform headlight ECU sub-assembly LH initialization Lighting system (w/ AFS) (EXT) Refer to INITIALIZATION [06/2018 - 06/2021]
Front wheel alignment adjustment
  1. Clear zero point calibration data.
  2. Perform yaw rate and acceleration sensor zero point calibration.
  • DTCs are stored
  • ABS warning light illuminates
  • Brake warning light / yellow (minor malfunction) illuminates
  • Slip indicator light illuminates
  • VSC disabled or malfunctions
Refer to UTILITY [06/2018 - 09/2022]
CVT fluid ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly Refer to INITIALIZATION [06/2018 - 09/2022]

*1: Not necessary when TCM replaced with new one.

*2: If the vehicle height has changed due to suspension or tire replacement.

*3: for Hatchback

*4: w/o Smart Key System

*5: w/ Smart Key System

WARNING:
  • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
    GTY563662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • Because the continuously variable transaxle assembly is extremely heavy, make sure to follow the work procedures described in the repair information.
    GTY559497Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Heavy object exceeding the capacity of the transmission jack
  • If work is not performed according to the procedures described in the repair information, there is a danger that the transmission jack could drop and components could fall down.
NOTE:
  • After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) battery terminal. (for Audio and Visual System (for Gasoline Model))
  • 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)