INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION; 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [04/2020

INITIALIZATION

PROCEDURES NECESSARY WHEN CABLE IS DISCONNECTED/RECONNECTED TO NEGATIVE (-) AUXILIARY BATTERY TERMINAL (for HV Model)

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

Perform steering sensor zero point calibration

Lane Control System (for HV Model)

Pre-collision System (for HV Model)

NOTICE:

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))

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1: for Hatchback

Perform steering sensor zero point calibration

Lane Control System (for Gasoline Model)

Pre-collision System (for Gasoline Model)

Lighting System (w/ AFS)(EXT)

Initialize back door lock*1

Power Door Lock Control System (for Hatchback, Gasoline Model)

PROCEDURES NECESSARY WHEN CABLE IS DISCONNECTED/RECONNECTED TO NEGATIVE (-) AUXILIARY BATTERY TERMINAL (for Gasoline Model)

NOTICE:

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

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: for Cold Area Spec.

*2: One Time Recognition

*3: Sequential Recognition

ECM

Vehicle Identification Number (VIN) or frame number registration

MIL comes on

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.

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

for 2ZR-FXE (for Nickel Metal Hydride Battery)

for 2ZR-FXE (for Lithium-ion Battery)

Hybrid vehicle transaxle assembly

Resolver learning
Initialize resolver

for Nickel Metal Hydride Batter

HV battery

Battery status info update

HV battery status information cannot be updated

for 2ZR-FXE

for Lithium-ion Battery

HV battery
No. 1 HV supply stack sub-assembly
No. 2 HV supply stack sub-assembly

Prediagnostic battery charge
Battery diagnosis
Battery status info update

HV battery status information cannot be updated

for Lithium-ion Battery

Battery ECU assembly
HV battery junction block assembly

Current sensor offset learning

DTCs are stored

Hybrid battery terminal block

Perform high voltage fuse accumulated load history reset

DTCs are stored

for 2ZR-FXE (for Nickel Metal Hydride Battery)

for 2ZR-FXE (for Lithium-ion Battery)

Millimeter wave radar sensor assembly

Adjust millimeter wave radar sensor assembly

Dynamic Radar Cruise Control System (for HV Model)
Lane Control System (for HV Model)
Road Sign Assist System (for HV Model)
Front Radar Sensor System (for HV Model)
Pre-collision System (for HV Model)
Lighting System (EXT) (for HV Model)

Forward recognition camera
Windshield glass

Adjust forward recognition camera

Dynamic Radar Cruise Control System (for HV Model)
Front Camera System (for HV Model)
Lane Control System (for HV Model)
Road Sign Assist System (for HV Model)
Pre-collision System (for HV Model)
Lighting System (EXT) (for HV Model)

Tire pressure warning ECU and receiver (Electrical key and tire pressure monitoring system receiver assembly)
Tire pressure warning valve and transmitter

Register Transmitter ID
Initialize tire pressure warning system

When DTC detection conditions of "transmitter ID not received" DTC are met, TPWS indicator blinks for 1 minute, and then illuminates
Tire pressure warning function

for Registration

for Initialization

Skid control ECU (Brake booster with master cylinder assembly)
Brake actuator assembly

Bleed air
Clear the data stored during previous linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization
Perform linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization

DTCs are stored
ABS warning light illuminates
Brake warning light / yellow (minor malfunction) illuminates
Slip indicator light illuminates
VSC disabled or malfunctions

for Initialization

for Calibration

Brake pedal stroke sensor assembly
Brake pedal

Clear the data stored during previous linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization
Perform linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization

Skid control ECU (Brake booster with master cylinder assembly)
Yaw rate and acceleration sensor (Airbag sensor assembly)

Clear zero point calibration data
Perform yaw rate and acceleration sensor zero point calibration

Parking Brake ECU (Brake actuator assembly)

Operate the electric parking brake switch (electric parking brake switch assembly)

Parking brake indicator light (red) blinks when the power switch is first turned on (IG)

Power steering ECU with motor assembly
Electric power steering column sub- assembly

Perform torque sensor zero point calibration and assist map writing

DTCs are output
Steering effort different between turning steering wheel left and right
EPS warning light illuminates

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)

Blind spot monitor sensor

Blind spot monitor beam axis adjustment

Blind Spot Monitor System (for HV Model)

Inner rear view mirror assembly

Re-registration of codes in the garage door opener system

Register transmitter code
Rolling code systems

Garage Door Opener System

Certification ECU (Smart key ECU assembly)
ID code box (immobiliser code ECU)
Steering lock ECU (Steering lock actuator or upper bracket assembly)
Electrical key transmitter sub-assembly
Hybrid vehicle control ECU assembly
Main body ECU (Multiplex network body ECU)

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)
Steering lock function

Occupant detection ECU
Front passenger seat

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. 2 air conditioning radiator damper servo sub-assembly
No. 3 air conditioning radiator damper servo sub-assembly*1
No. 1 blower damper servo sub-assembly
Air conditioning amplifier assembly

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

DTCs are stored

Door window regulator assembly
Power window regulator motor sub-assembly
Door glass
Door glass run
Door belt moulding
Door glass weatherstrip inner

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

Swing grille actuator assembly
Radiator shutter sub-assembly

Change grille shutter control mode and/or perform initialization

Grille Shutter System

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: If the vehicle height has changed due to suspension or tire replacement.

*3: One Time Recognition

*4: Sequential Recognition

*5: w/o Smart Key System

*6: w/ Smart Key System

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

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

ECM

Vehicle Identification Number (VIN) registration

MIL comes on

for M20A-FKS

for 2ZR-FAE

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.

for 2ZR-FAE

Throttle body assembly
Engine assembly
Continuously variable valve lift controller assembly
Cylinder head sub-assembly
Camshaft housing sub-assembly
Camshaft timing gear assembly
Camshaft timing exhaust gear assembly
Piston or piston ring
Mass air flow meter sub-assembly
Fuel injector assembly
Fuel pump
Air fuel ratio sensor
Heated oxygen sensor
Engine coolant temperature sensor
Spark plug
Ignition coil assembly
Air intake system parts
Exhaust system parts
Knock control sensor

Inspection after repair

Poor idle, etc.
Engine start function, etc.

Millimeter wave radar sensor assembly

Adjust millimeter wave radar sensor assembly

Dynamic Radar Cruise Control System (for M20A-FKS)
Dynamic Radar Cruise Control System (for 2ZR-FAE)
Lane Control System (for Gasoline Model)
Road Sign Assist System (for Gasoline Model)
Front Radar Sensor System (for Gasoline Model)
Pre-collision System (for Gasoline Model)
Lighting System (EXT)

Forward recognition camera
Windshield glass

Adjust forward recognition camera

Dynamic Radar Cruise Control System (for M20A-FKS)
Dynamic Radar Cruise Control System (for 2ZR-FAE)
Front Camera System (for Gasoline Model)
Lane Control System (for Gasoline Model)
Road Sign Assist System (for Gasoline Model)
Pre-collision System (for Gasoline Model)
Lighting System (EXT)

Continuously variable transaxle assembly
ECM
Oil pressure sensor
Airbag sensor assembly (Yaw rate and acceleration sensor)

Reset memory
Deceleration sensor zero point calibration
CVT oil pressure calibration

Large shift shock
Deterioration of fuel efficiency

for K313

Continuously variable transaxle assembly

Input transaxle compensation code into TCM
Perform reset memory
Deceleration sensor zero point calibration
CVT oil pressure calibration
Perform road test to allow TCM to learn

Large shift shock
Deterioration of fuel efficiency

for K120 Initialization

for K120 Registration

Transmission valve body assembly

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

Oil pressure sensor
Airbag sensor assembly (Yaw rate and acceleration sensor)

Perform reset memory
Deceleration sensor zero point calibration
CVT oil pressure calibration
Perform road test to allow TCM to learn

TCM

(If transaxle compensation code read from TCM)

Transfer transaxle compensation code
Perform reset memory*1
Deceleration sensor zero point calibration
CVT oil pressure calibration
Perform road test to allow TCM to learn

TCM

(If transaxle compensation code not read from TCM)

Reset transaxle compensation code
Perform reset memory*1
Deceleration sensor zero point calibration
CVT oil pressure calibration
Perform road test to allow TCM to learn

ECM

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

CVT fluid

ATF thermal degradation estimate reset

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

for K313

for K120

Tire pressure warning ECU and receiver (electrical key and tire pressure monitoring system receiver assembly*6, door control and tire pressure monitoring system receiver assembly*7, tire pressure monitor receiver assembly*8)
Tire pressure warning valve and transmitter

Register transmitter ID
Initialize tire pressure warning system

When DTC detection conditions of "transmitter ID not received" DTC are met, TPWS indicator blinks for 1 minute, and then illuminates
Tire pressure warning function

for Registration

for Initialization

Skid control ECU (brake actuator assembly)

Perform acceleration sensor zero point calibration and store system information memorization

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

Yaw rate and acceleration sensor (airbag sensor assembly)

Perform "Reset Memory"
Perform acceleration sensor zero point calibration and store system information memorization

Skid control ECU (brake actuator assembly)

Operate the electric parking brake switch (electric parking brake switch assembly)

Parking brake indicator light (red) blinks when the engine switch is first turned on (IG)

Power steering ECU with motor assembly
Electric power steering column sub-assembly

Perform torque sensor zero point calibration and assist map writing

DTCs are output
Steering effort different between turning steering wheel left and right
EPS warning light illuminates

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

Blind spot monitor sensor

Blind spot monitor beam axis adjustment

Blind Spot Monitor System

Inner rear view mirror assembly

Re-registration of codes in the garage door opener system

Register transmitter code
Rolling code systems

Garage door opener system

Certification ECU (smart key ECU assembly)*6
ID code box (immobiliser code ECU)*6
Steering lock ECU (steering lock actuator or upper bracket assembly)*6
Electrical key transmitter sub-assembly*6
ECM*6
Main body ECU (multiplex network body ECU)*6

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

Transponder key ECU assembly*5
ECM*5
Door control transmitter sub-assembly*5
DCM (telematics transceiver)*5

Code registration (Immobiliser system)

Engine start
Telematics System

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

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

Occupant detection ECU
Front passenger seat

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
Air conditioning amplifier assembly

Servo motor initialization (Air Conditioning System (for Gasoline Model with Automatic Air Conditioning System))

DTCs are output

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

Servo motor initialization (Air Conditioning System (for Gasoline Model with Manual Air Conditioning System))

DTCs are output

Door window regulator sub-assembly
Power window regulator motor sub-assembly
Door glass
Door glass run
Door belt moulding
Door glass weatherstrip inner

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

Headlight ECU sub-assembly LH

Synchronize the vehicle information
Perform headlight ECU sub-assembly LH initialization

Lighting system (w/ AFS) (EXT)

Rear height control sensor sub-assembly LH
Suspension, tires, etc.*2

Perform headlight ECU sub-assembly LH initialization