Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002BA0D
Model Year Start: 2023 Model: Corolla Hatchback Prod Date Range: [03/2023 -           ]
Title: M20A-FKS (ENGINE MECHANICAL): REAR CRANKSHAFT OIL SEAL: 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 and installed, or replaced during engine 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

*1: w/ Steering Lock Function

*2: w/o Smart Key System

*3: w/ Smart Key System

*4: If matchmarks were not placed when removing parts related to steering operation, perform end position initial setting.

*5: If transaxle compensation code read from ECM

*6: If transaxle compensation code not read from ECM

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

for K121

  • ECU configuration

-

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: ECU CONFIGURATION

Update ECU security key

Vehicle Control History (RoB) are stored

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

ECU communication ID registration (Immobiliser system)

Engine start function

2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

Replacement of ECM*3

Code registration (Smart Key System (for Gasoline Model, Start Function))

  • Wireless Door Lock Control System (for Gasoline Model with Smart Key System)
  • Smart Key System (for Gasoline Model, Entry Function)
  • Smart Key System (for Gasoline Model, Start Function)
  • Steering lock function*1

2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

Replacement of ECM*2

Code registration (Immobiliser system)

  • Engine start
  • Telematics System

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION

  • Replacement of engine assembly
  • Gas leak from exhaust system is repaired

Inspection After Repair

  • Poor idle, etc.
  • Engine start function, etc.

2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

Replacement of continuously variable transaxle assembly

for K120

  • Input transaxle compensation code into TCM
  • Perform reset memory
  • CVT oil pressure calibration
  • Perform road test to allow TCM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

Initialization: 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

Registration: 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: REGISTRATION

for K121

  • Input transaxle compensation code into ECM
  • Perform reset memory
  • CVT oil pressure calibration
  • Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

Initialization: 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

Registration: 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: REGISTRATION

Replacement of ECM

for K120

  • Perform reset memory
  • CVT oil pressure calibration
  • Perform road test to allow TCM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

Initialization: 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

Registration: 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: REGISTRATION

for K121

  • Transfer transaxle compensation code*5
  • Reset transaxle compensation code*6
  • CVT oil pressure calibration
  • Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

Initialization: 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

Registration: 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: REGISTRATION

Front wheel alignment adjustment

  • Perform "Reset Memory"
  • Perform "Calibration"
  • VSC is disabled or malfunctions
  • DTCs are output
  • Slip indicator light illuminates
  • ABS warning light illuminates

w/ Electric Parking Brake System: 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model with Electric Parking Brake System): UTILITY

w/o Electric Parking Brake System: 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model without Electric Parking Brake System TMC Made): UTILITY

CVT fluid

ATF thermal degradation estimate reset

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

for K120: 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

for K121: 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

  • Steering gear assembly*4
  • No. 2 steering intermediate shaft assembly*4

for TMC Made

  • End position initial setting

-

2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [09/2022 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): CALIBRATION

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.

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; ADVANCED DRIVER ASSISTANCE SYSTEM: FRONT CAMERA SYSTEM: INITIALIZATION

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.

2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: INITIALIZATION

PROCEDURE

1. REMOVE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY: REMOVAL

2. REMOVE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY

(a) Using height adjustment attachments and plate lift attachments, place the engine assembly on a flat level surface.

NOTICE:

  • Using height adjustment attachments and plate lift attachments, keep the engine assembly level.
  • To prevent the oil pan sub-assembly from deforming, do not place any attachments under the oil pan sub-assembly of the engine assembly.
  • Using an engine sling device and engine lift, secure the engine assembly before servicing.

(b) Using SST, hold the crankshaft pulley assembly.

SST: 09213-54015

SST: 09330-00021

(c) Remove the 8 bolts, rear drive plate spacer, drive plate and ring gear sub-assembly.

3. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

(a) Remove the No. 1 crankshaft position sensor plate.

4. REMOVE REAR ENGINE OIL SEAL

(a) Using a knife, cut off the lip of the rear engine oil seal.

*a

Protective Tape

*b

Cut Position

(b) Using a screwdriver, pry out the rear engine oil seal.

NOTICE:

Do not damage the surface of the rear engine oil seal press fit hole or the crankshaft.

HINT:

Tape the screwdriver tip before use.