K120 / K121 (CVT): TRANSMISSION WIRE: REMOVAL; 2025 MY Corolla Corolla Hatchback [09/2024 - ]

Last Modified: 12-11-2024	6.11:8.1.0	Doc ID: RM100000002Q0YU
Model Year Start: 2025	Model: Corolla Hatchback	Prod Date Range: [09/2024 - ]
Title: K120 / K121 (CVT): TRANSMISSION WIRE: REMOVAL; 2025 MY Corolla Corolla Hatchback [09/2024 - ]

REMOVAL

CAUTION / NOTICE / HINT

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

Necessary Procedure After Parts Removed/Installed/Replaced

Replacement Part or Procedure

Necessary Procedure

Effect/Inoperative when not Performed

Link

Replacement of CVT fluid

ATF thermal degradation estimate reset

The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly

Replacement of transmission valve body assembly

Reset transaxle compensation code
Perform reset memory
CVT oil pressure calibration
Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

Initialization:

Registration:

PROCEDURE

1. REMOVE TRANSMISSION VALVE BODY ASSEMBLY

Click here

2. REMOVE TRANSMISSION WIRE

(a) Disengage the claw, rotate the lever and disconnect the transmission wire connector.

Remove in this Direction

(b) Disconnect the transmission revolution sensor (NC1) connector.

(c) Remove the bolt and transmission wire from the transaxle case sub-assembly.

(d) Remove the O-ring from the temperature sensor.