K120 / K121 (CVT): REVOLUTION SENSOR (NSS SENSOR): REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM100000002B8O8
Model Year Start: 2023	Model: Corolla Hatchback	Prod Date Range: [03/2023 - ]
Title: K120 / K121 (CVT): REVOLUTION SENSOR (NSS SENSOR): REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 - ]

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 revolution sensor (NSS) removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replacement Part or Procedure	Necessary Procedure	Effect/Inoperative when not Performed	Link
*1: Not necessary when TCM replaced with new one.
for K120 Replacement of TCM (If transaxle compensation code read from TCM)	Update ECU security key	Vehicle Control History (RoB) are stored
	Transfer transaxle compensation code Perform reset memory*1 CVT oil pressure calibration Perform road test to allow TCM to learn	Large shift shock Deterioration of fuel efficiency	Initialization: Registration:
for K120 Replacement of TCM (If transaxle compensation code not read from TCM)	Update ECU security key	Vehicle Control History (RoB) are stored
	Reset transaxle compensation code Perform reset memory*1 CVT oil pressure calibration Perform road test to allow TCM to learn	Large shift shock Deterioration of fuel efficiency	Initialization: Registration:

HINT:

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

Learning completes when vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: for Hatchback
Power Door Lock Control System Back door opener*1	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

PROCEDURE

1. REMOVE TCM (for K120)

Click here

2. REMOVE TRANSMISSION REVOLUTION SENSOR (NSS)

(a) Disconnect the transmission revolution sensor (NSS) connector.

(b) Remove the bolt and transmission revolution sensor (NSS) from the transaxle case sub-assembly.