Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001HZEA |
Model Year Start: 2020 |
Model: Corolla Hatchback |
Prod Date Range: [03/2019 - 09/2022] |
Title: K120 / K121 (CVT): K120 TCM: REMOVAL; 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022] |
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during TCM removal/installation are shown below.
Necessary Procedure After Parts Removed/Installed/Replaced
Replacement Part or Procedure
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Necessary Procedure
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Effect/Inoperative when not Performed
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Link
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Disconnect cable from negative battery terminal
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Perform steering sensor zero point calibration
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Lane Control System (for Gasoline Model)
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Pre-collision System (for Gasoline Model)
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Lighting System (w/ AFS)(EXT)
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Initialize back door lock*2
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Power Door Lock Control System (for Hatchback, Gasoline Model)
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Replacement of TCM
(If transaxle compensation code read from TCM)
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Transfer transaxle compensation code
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Perform reset memory*1
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Deceleration sensor zero point calibration
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CVT oil pressure calibration
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Perform road test to allow TCM to learn
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Large shift shock
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Deterioration of fuel efficiency
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for Initialization
for Registration
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Replacement of TCM
(If transaxle compensation code not read from TCM)
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Reset transaxle compensation code
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Perform reset memory*1
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Deceleration sensor zero point calibration
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CVT oil pressure calibration
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Perform road test to allow TCM to learn
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NOTICE:
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 Navigation System and Audio and Visual System (for Gasoline Model))
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
Click here
3. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY
Click here
4. REMOVE REAR ENGINE UNDER COVER LH
Click here
5. REMOVE TCM
(a) Remove the bolt to disconnect the engine wire from the No. 2 transmission control ECU bracket.
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(b) Disengage the claw, rotate the lever and disconnect the TCM connector.
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Remove in this Direction
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(c) Remove the 2 bolts and TCM from the continuously variable transaxle assembly.
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6. REMOVE NO. 1 TRANSMISSION CONTROL ECU BRACKET
(a) Remove the 2 screws and No. 1 transmission control ECU bracket from the TCM.
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7. REMOVE NO. 2 TRANSMISSION CONTROL ECU BRACKET
(a) Remove the 2 screws and No. 2 transmission control ECU bracket from the TCM.
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