Caution / Notice / Hint

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, and 2020 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

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

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane Control System (for HV Model)	Refer to INITIALIZATION [01/2019 - 09/2022]
Auxiliary battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Pre-collision System (for HV Model)	Refer to INITIALIZATION [01/2019 - 09/2022]
Replacement of ECM	Vehicle Identification Number (VIN) or frame number registration	MIL comes on	Refer to REGISTRATION [01/2019 - ]
Replacement of inverter with converter assembly	Resolver learning	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration	Refer to UTILITY [01/2019 - 09/2022] for Nickel Metal Hydride Battery Refer to UTILITY [04/2020 - 09/2022] for Lithium-ion Battery
Replacement of hybrid vehicle transaxle assembly	Resolver learning Initialize resolver
Replacement of throttle body assembly Replacement of engine assembly Gas leak from exhaust system is repaired	Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [01/2019 - 09/2022]
Front wheel alignment adjustment	Clear zero point calibration data 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 CALIBRATION [01/2019 - 09/2022]

WARNING:

This vehicle has contains high voltage circuits standardized with orange colored wiring and connectors, so follow the instructions in appropriate service information to perform the procedures correctly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

for NICKEL METAL HYDRIDE BATTERY:

Refer to PRECAUTION [01/2019 - 09/2022]

for LITHIUM-ION BATTERY:

Refer to PRECAUTION [04/2020 - 09/2022]

If the correct procedures are not followed according to the instructions in appropriate service information , there is a danger of electric shock from the high voltage circuits.

Be sure to wear insulating gloves when working on high voltage wiring or components.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If work is performed without wearing insulating gloves, there is a danger of electric shock.

To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the repair information, or the engine lifter may suddenly drop or the engine assembly with transaxle may fall off the engine lifter.

*a	An Object Exceeding Weight Limit of Engine Lifter

NOTE:

After the power switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the power switch off, make sure to wait at least 85 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal. (for Audio and Visual System (for HV Model))