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Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Automatic Transaxle System (K120) - Service Information (2 Of 2)) >> TCM >> Removal [11/2022 - 11/2023] >> Caution / Notice / Hint

Caution / Notice / Hint

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

COMPONENTS (REMOVAL) 

Fig 1: TCM Removal Components [11/2022 - 11/2023] (1 Of 2)
GTY1035444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1 PRECAUTION - See step  1 - -
2 DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL - - - -
3 NO. 1 ENGINE UNDER COVER ASSEMBLY 51410 - - -
4 REAR ENGINE UNDER COVER LH 51444A - - -
Fig 2: TCM Removal Components [11/2022 - 11/2023] (2 Of 2)
GTY1035065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5 ENGINE WIRE 82121 - - -
6 TCM 89535B See step  6 - -
7 NO. 1 TRANSMISSION CONTROL ECU BRACKET 89539M - - -
8 NO. 2 TRANSMISSION CONTROL ECU BRACKET 89539N - - -


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

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replacement Part or Procedure Necessary Procedures Effect/Inoperative Function When Necessary Procedures are not Performed Link
TCM If possible, read the transaxle compensation code from the previous ECM:
  1. Reset memory
  2. Transfer transaxle compensation code
  3. CVT oil pressure calibration
Deterioration of fuel efficiency for Initialization:
Refer to INITIALIZATION [11/2022 - 11/2023]
for Registration:
Refer to REGISTRATION [09/2021 - 11/2023]
If impossible, read the transaxle compensation code from the previous ECM:
  1. Reset memory
  2. Reset transaxle compensation code
  3. CVT oil pressure calibration
Update ECU security key Vehicle control history (RoB) are stored Refer to UPDATE ECU SECURITY KEY [11/2022 - ]

HINT: 

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.