SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: WORK PROCEDURE; 2024 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2023

WORK PROCEDURE

PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED (for HV Model)

Replaced Part

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

*2: for Single Knob Type

*3: If matchmarks were not placed when removing parts related to steering operation, perform automatic rack centering.

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

*5: w/o Smart Key System

ECM

Vehicle Identification Number (VIN) registration

MIL comes on

ECU configuration

Update ECU security key

Vehicle Control History (RoB) are stored

Throttle body assembly
Engine assembly
Cylinder head sub-assembly
Camshaft (for intake or exhaust camshaft)
Camshaft timing gear assembly
Piston or piston ring
Mass air flow meter sub-assembly
Fuel injector assembly
Fuel pump
Air fuel ratio sensor
Engine coolant temperature sensor
Spark plug
Ignition coil assembly
EGR valve assembly
Air intake system parts
Exhaust system parts
Knock control sensor

Inspection After Repair

Poor idle, etc.
Engine start function, etc.

Radiator shutter assembly

Hybrid vehicle control ECU

ECU configuration

Update ECU security key

Vehicle Control History (RoB) are stored

Inverter with converter assembly

ECU configuration

Resolver learning

DTCs are stored
Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
Shock or vibration during acceleration

Hybrid vehicle transaxle assembly

Resolver learning
Initialize resolver

DTCs are stored
Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
Shock or vibration during acceleration

Rear traction motor with transaxle assembly

Resolver learning
Initialize resolver

DTCs are stored
Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
Shock or vibration during acceleration

HV battery

Battery status info update
Prediagnostic battery charge
Battery diagnosis

HV battery status information cannot be updated

Battery ECU assembly

Current sensor offset learning

DTCs are stored

HV battery junction block assembly

Current sensor offset learning

DTCs are stored

High voltage fuse accumulated load history reset

Tire pressure warning ECU and receiver
Tire pressure warning valve and transmitter

ID Registration
Initialization
Tire Position Identification

Tire Pressure Warning System

Electric brake booster (brake booster with master cylinder assembly)

Update ECU security key

Vehicle Control History (RoB) are stored

Bleed air*1
Perform "Reset Memory"
Perform "Calibration"

DTCs are stored
ABS warning light illuminates
Brake system warning light (yellow indicator) illuminates
Slip indicator light illuminates
Electronically controlled brake system disabled or malfunctions

Skid control ECU (brake actuator assembly)

Update ECU security key

Vehicle Control History (RoB) are stored

Bleed air*1
Perform "Reset Memory"
Perform "Calibration"

DTCs are stored
ABS warning light illuminates
Brake system warning light (yellow indicator) illuminates
Slip indicator light illuminates
Electronically controlled brake system disabled or malfunctions

Operate the electric parking brake switch

Electric Parking Brake System

Brake pedal stroke sensor assembly*1
Brake pedal*1

Perform "Reset Memory"
Perform "Calibration"

DTCs are stored
ABS warning light illuminates
Brake system warning light (yellow indicator) illuminates
Slip indicator light illuminates
Electronically controlled brake system disabled or malfunctions

Power steering ECU assembly

Update ECU security key

Vehicle Control History (RoB) are stored

ECU configuration

Vehicle Control History (RoB) are stored
EPS warning light illuminates

Perform power steering ECU initial setting (assist map writing)

Vehicle Control History (RoB) are stored
EPS warning light illuminates

End position initial setting

Electric power steering column sub-assembly

Perform power steering ECU initial setting (assist map writing)

Vehicle Control History (RoB) are stored
EPS warning light illuminates

End position initial setting

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

End position initial setting

Steering sensor

Update ECU security key

Vehicle Control History (RoB) are stored

DCM (telematics transceiver)

DCM activation

Safety Connect System (for HV Model)

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

Telematics System

Back-up battery

Perform the reset back-up battery condition

Safety Connect System (for HV Model)

Radio and display receiver assembly*2

Register Vehicle Information
Software update

Blind spot monitor sensor

Blind spot monitor beam axis adjustment

Blind Spot Monitor System (w/ Safe Exit Assist Function)

Main body ECU (multiplex network body ECU)

ECU configuration

Code registration

Wireless Door Lock Control System (for HV Model)
Smart Key System (for Entry Function, HV Model)
Smart Key System (for Start Function, HV Model)

Power distribution box assembly

ECU configuration

Central gateway ECU (network gateway ECU)

Update ECU security key

Vehicle Control History (RoB) are stored

Door control transmitter module set sub-assembly*5
Door control receiver*5

Code registration

Wireless door lock control system

Certification ECU (Smart key ECU assembly)
ID code box (immobiliser code ECU)
Electrical key transmitter sub-assembly
Hybrid vehicle control ECU assembly

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

Wireless Door Lock Control System (for HV Model)
Smart Key System (for Entry Function, HV Model)
Smart Key System (for Start Function, HV Model)

Combination meter assembly

Update ECU security key

Vehicle Control History (RoB) are stored

Front passenger seat*1

Zero point calibration (Occupant classification system)

Occupant Classification System
Passenger airbag ON/OFF indicator
Airbag System (Front passenger side)
Seat Belt Warning System (Front passenger)

Airbag sensor assembly

Write the VIN/Vehicle Identification Number

ECU configuration

Vehicle Control History (RoB) are stored

Update ECU security key

Vehicle Control History (RoB) are stored

Perform "Reset Memory"*1
Perform "Calibration"*1

DTCs are stored
ABS warning light illuminates
Brake system warning light (yellow indicator) illuminates
Slip indicator light illuminates
Electronically controlled brake system disabled or malfunctions

Switch the specification information

Zero point calibration (Occupant Classification System)

Occupant Classification System
Passenger airbag ON/OFF indicator
Airbag System (Front passenger side)
Seat Belt Warning System (Front passenger)

No. 1 air conditioning radiator damper servo sub-assembly
No. 1 blower damper servo sub-assembly

Servo motor initialization (Air conditioning system (for HV Model))

DTCs are stored

Windshield glass*1

Adjust forward recognition camera

Front Camera System
Automatic High Beam System

One Time Recognition:

Driving Adjustment:

Door window regulator assembly*1
Power window regulator motor sub-assembly
Door glass*1
Door glass run*1
Door glass weatherstrip inner*1

Initialize power window control system

Auto up and down function
Jam protection function
Remote control function
Key-linked function
Key-off operation function
Catch protection function
Window open warning function

Sliding roof ECU (sliding roof drive gear sub-assembly)*1
Sliding roof glass sub-assembly*1
Sliding roof drive cable sub-assembly*1
Sliding roof housing sub-assembly*1

Initialize sliding roof system

Auto operation function
Jam protection function
Key-linked function
Key-off operation function
Wireless transmitter-linked function
Sliding roof open warning function

Forward recognition camera

Update ECU security key

Vehicle Control History (RoB) are stored

Software version confirmation

Front Radar Sensor System
Automatic High Beam System

Adjust forward recognition camera

Front Camera System
Automatic High Beam System

One Time Recognition:

Driving Adjustment:

Camera Axis Adjustment Value Write:

Millimeter wave radar sensor assembly

Adjust millimeter wave radar sensor assembly

Front Radar Sensor System
Automatic High Beam System

Triangle Target:

Flat Surface Target:

Driving Adjustment:

PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED (for Gasoline Model)

Replaced Part

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1: Not necessary when TCM replaced with new one.

*2: w/o Smart Key System

*3: w/ Smart Key System

*4: w/o Smart Key System with Wireless Door Lock Control System

*5: w/o Smart Key System without Wireless Door Lock Control System

*6: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

*7: If matchmarks were not placed when removing parts related to steering operation, perform automatic rack centering.

*8: w/ Steering Lock Function

*9: for Single Knob Type

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

*11: If transaxle compensation code read from ECM

*12: If transaxle compensation code not read from ECM

for G16E-GTS

Vehicle Identification Number (VIN) registration

MIL comes on

ECU configuration

Update ECU security key

Vehicle Control History (RoB) are stored

Heavy Knock History

ECU communication ID registration (Immobiliser system)

Engine start function

for G16E-GTS

Throttle body with motor assembly
Engine assembly
Cylinder head sub-assembly
Camshaft (for intake or exhaust camshaft)
Camshaft timing gear assembly
Camshaft timing exhaust gear assembly
Piston or piston ring
Mass air flow meter sub-assembly
Port fuel injector assembly
Direct fuel injector assembly
Fuel pump (for low pressure side)
Fuel pump assembly (for high pressure side)
No. 2 fuel pressure sensor (for low pressure side)
Fuel pressure sensor (for high pressure side)
Air fuel ratio sensor (sensor 1)
Air fuel ratio sensor (sensor 2)
Engine coolant temperature sensor
Spark plug
Ignition coil assembly
Air intake system parts
Turbocharger sub-assembly
Exhaust system parts
Knock control sensor

Inspection after repair

Poor idle, etc.
Engine start function, etc.

for G16E-GTS

Piston ring

Clear Heavy Knock History

for M20A-FKS

Vehicle Identification Number (VIN) registration

MIL comes on

for K121

ECU configuration

Update ECU security key

Vehicle Control History (RoB) are stored

ECU communication ID registration (Immobiliser system)

Engine start function

for M20A-FKS

Throttle body with motor assembly
Cam timing control motor with EDU assembly
Camshaft timing gear assembly
Engine assembly
Cylinder head sub-assembly
Camshaft (for intake or exhaust camshaft)
Camshaft timing exhaust gear assembly
Piston or piston ring
Mass air flow meter sub-assembly
Port fuel injector assembly
Direct fuel injector assembly
Fuel pump (for low pressure side)
Fuel pump assembly (for high pressure side)
No. 2 fuel pressure sensor (for low pressure side)
Fuel pressure sensor (for high pressure side)
Air fuel ratio sensor (sensor 1)
Air fuel ratio sensor (sensor 2)
Engine coolant temperature sensor
Spark plug
Ignition coil assembly
EGR valve assembly
Air intake system parts
Exhaust system parts
Knock control sensor

Inspection after repair

Poor idle, etc.
Engine start function, etc.

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:

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:

Registration:

Transmission valve body assembly

for K120

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

Large shift shock
Deterioration of fuel efficiency

Initialization:

Registration:

for K121

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:

Oil pressure sensor

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:

Registration:

for K121

Perform reset memory
CVT oil pressure calibration
Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

Initialization:

Registration:

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:

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:

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:

Registration:

for K121

Transfer transaxle compensation code*11
Reset transaxle compensation code*12
CVT oil pressure calibration
Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

Initialization:

Registration:

CVT fluid

ATF thermal degradation estimate reset

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

for K120:

for K121:

4WD ECU assembly

1.ECU Data Save (ECU being replaced)

Active Torque Split AWD System

2.ECU Configuration (New ECU)

Vehicle Control History (RoB) are stored

3.ECU Data Write (When replacing 4WD ECU assembly) (New ECU)

Active Torque Split AWD System

4WD linear solenoid (electro magnetic control coupling sub-assembly)

ECU Data Write (When replacing 4WD linear solenoid (electro magnetic control coupling sub-assembly))

Active Torque Split AWD System

Tire pressure warning ECU and receiver
Tire pressure warning valve and transmitter

ID Registration
Initialization
Tire Position Identification

Tire Pressure Warning System

Tire

ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)

Active Torque Split AWD System

Skid control ECU (brake actuator assembly)

Update ECU security key

Vehicle Control History (RoB) are stored

Perform "Calibration"

VSC is disabled or malfunctions
DTCs are output
Slip indicator light illuminates
ABS warning light illuminates

w/ Electric Parking Brake System

w/o Electric Parking Brake System

Operate the electric parking brake switch

Electric Parking Brake System

Steering sensor

Update ECU security key

Vehicle Control History (RoB) are stored

Power steering ECU assembly

for Type A(w/ G16E-GTS) or Type B

Update ECU security key

Vehicle Control History (RoB) are stored

for Type A(w/ G16E-GTS) or Type B

ECU configuration

Vehicle Control History (RoB) are stored
EPS warning light illuminates

for Type A

Perform power steering ECU initial setting (torque sensor zero point calibration and assist map writing)

Vehicle Control History (RoB) are stored
EPS warning light illuminates

for Type B

Perform power steering ECU initial setting (assist map writing)

Vehicle Control History (RoB) are stored
EPS warning light illuminates

for Type B

End position initial setting

Electric power steering column sub-assembly

for Type A

Perform power steering ECU initial setting (torque sensor zero point calibration and assist map writing)

Vehicle Control History (RoB) are stored
EPS warning light illuminates

for Type B

Perform power steering ECU initial setting (assist map writing)

Vehicle Control History (RoB) are stored
EPS warning light illuminates

for Type B

End position initial setting

Steering gear assembly*10
No. 2 steering intermediate shaft assembly*10

for Type B

End position initial setting

DCM (telematics transceiver)

DCM activation

Safety Connect System

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

Telematics System

Back-up battery

Perform the reset back-up battery condition

Safety Connect System

Radio and display receiver assembly*9

Register Vehicle Information
Software update

Clearance warning ECU assembly

Update ECU security key

Vehicle Control History (RoB) are stored

Bumper type registration
Initialization of ultrasonic sensors

Intuitive Parking Assist System

Ultrasonic sensor

Initialization of ultrasonic sensors

Intuitive Parking Assist System

Blind spot monitor sensor

Blind spot monitor beam axis adjustment

Blind Spot Monitor System (w/ Safe Exit Assist Function)

Main body ECU (multiplex network body ECU)

ECU configuration

Code registration

Wireless Door Lock Control System
Smart Key System (for Gasoline Model, Entry Function)
Smart Key System (for Gasoline Model, Start Function)
Steering lock function*8

Power distribution box assembly

ECU configuration

Central gateway ECU (network gateway ECU)

Update ECU security key

Vehicle Control History (RoB) are stored

Certification ECU (smart key ECU assembly)*3
ID code box (immobiliser code ECU)*3
Steering lock ECU (steering lock actuator or upper bracket assembly)*3*8
Electrical key transmitter sub-assembly*3
ECM*3
Main body ECU (multiplex network body ECU)*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*8

Transponder key ECU assembly*2
ECM*2
Door control transmitter sub-assembly*2
DCM (telematics transceiver)*2

Code registration (Immobiliser system)

Engine start
Telematics System

Door control transmitter module set sub-assembly*2
Door control receiver*2

Code registration

Wireless door lock control system

Combination meter assembly

Update ECU security key

Vehicle Control History (RoB) are stored

Sliding roof ECU (sliding roof drive gear sub-assembly)*6
Sliding roof glass sub-assembly*6
Sliding roof drive cable sub-assembly*6
Sliding roof housing sub-assembly*6

Initialize sliding roof system

Auto operation function
Jam protection function
Key-off operation function
Key-linked function
Wireless transmitter-linked function
Sliding roof open warning function

Front passenger seat*6

Zero point calibration (Occupant classification system)

Occupant Classification System
Passenger airbag ON/OFF indicator
Airbag System (Front passenger side)

for TMC Made

for TMMMS Made

Airbag sensor assembly

Write the VIN/Vehicle Identification Number

ECU configuration

Vehicle Control History (RoB) are stored

Update ECU security key

Vehicle Control History (RoB) are stored

for G16E-GTS

ECU Data Initialization

Active Torque Split AWD System

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

w/o Electric Parking Brake System

Switch the specification information

Zero point calibration (Occupant classification system)

Occupant Classification System
Passenger airbag ON/OFF indicator
Airbag System (Front passenger side)

for TMC Made

for TMMMS Made

No. 1 air conditioning radiator damper servo sub-assembly
No. 1 blower damper servo sub-assembly

Servo motor initialization (Air Conditioning System)

DTCs are output

w/ Automatic Air Conditioning System

w/ Manual Air Conditioning System for Electrical Control Type

No. 5 air conditioning radiator damper servo sub-assembly

Servo motor initialization (Air Conditioning System)

DTCs are output

Windshield glass*6

Adjust forward recognition camera

for TMC Made

Front Camera System
Automatic High Beam System

One Time Recognition:

Driving Adjustment:

Door window regulator sub-assembly*6
Power window regulator motor sub-assembly
Door glass*6
Door glass run*6
Door glass weatherstrip inner*6

Initialize power window control system

Auto up and down function
Jam protection function
Remote control function
Key-linked function
Wireless transmitter-linked function
Key-off operation function
Catch protection function
Window open warning function

Forward recognition camera

Update ECU security key

Vehicle Control History (RoB) are stored

Adjust forward recognition camera

Front Camera System
Automatic High Beam System

One Time Recognition:

Driving Adjustment:

Camera Axis Adjustment Value Write:

Millimeter wave radar sensor assembly

Adjust millimeter wave radar sensor assembly

Front Radar Sensor System
Automatic High Beam System

Triangle Target:

Flat Surface Target:

Driving Adjustment: