WHEN REMOVING,INSTALLING,REPAIRING OR REPLACING PARTS PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

Refer to the TOYOTA Repair Manual for each work procedure.


  1. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

    Replacement Part Necessary Procedure Effect/Inoperative Function when Necessary Procedures are not Performed Note
    ECM Perform Vehicle Identification Number (VIN) or frame number registration DTC is stored -
    ECU communication ID registration (Immobiliser System) Engine start function See Service Bulletin for the registration method.

      for 2AR-FE

    • Throttle body with motor assembly

    • Cleaning deposits from the 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

    • Fuel injector assembly

    • Fuel pump

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -

      for 2GR-FKS

    • Throttle body with motor assembly

    • Cleaning the deposits from the 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

    • Fuel injector assembly (for port injection)

    • Fuel injector assembly (for direct injection)

    • Fuel pump (for low pressure side)

    • Fuel pump assembly (for high pressure side)

    • Fuel pressure sensor (for low pressure side)

    • Fuel pressure sensor (for high pressure side)

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Intake system parts

    • Exhaust system parts

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -
    Engine stop and start ECU

    1. Upload the number of starter operations

    2. Reset air conditioning information

    3. Learning air conditioning information

    4. Clear the zero point calibration data

    5. Perform zero point calibration of the deceleration sensor

    6. Perform external backup boost converter assembly (eco run vehicle converter) existence learning

    		 Stop and Start System -
    Air conditioning amplifier assembly

    1. Reset air conditioning information

    2. Learning air conditioning information

    Starter assembly

    Note

    When the starter assembly is replaced, "ST NO. 1 relay" and "ST NO. 2 relay" must be also replaced.

    		 Clear number of starter operations
    Airbag sensor assembly

    1. Clear the zero point calibration data

    2. Perform zero point calibration of the deceleration sensor

    • Continuously variable transaxle assembly

    • CVT fluid

    		 Air bleed oil pump assembly with motor assembly
    Battery Switch battery type
    Engine stop and start ECU

    1. Upload the number of starter operations

    2. Reset air conditioning information

    3. Learning air conditioning information

    4. Clear the zero point calibration data

    5. Perform zero point calibration of the deceleration sensor

    6. Perform external backup boost converter assembly (eco run vehicle converter) existence learning

    		 Stop and Start System -
    Air conditioning amplifier assembly

    1. Reset air conditioning information

    2. Learning air conditioning information

    Starter assembly

    Note

    When the starter assembly is replaced, "ST NO. 1 relay" and "ST NO. 2 relay" must be also replaced.

    		 Clear number of starter operations
    Airbag ECU assembly

    1. Clear the zero point calibration data

    2. Perform zero point calibration of the deceleration sensor

    • Automatic transaxle assembly

    • Automatic transaxle fluid

    		 Check oil pump with solenoid assembly
    Battery Switch battery type
    Automatic transaxle assembly

    1. Reset memory

    2. Input transaxle compensation code into ECM

    3. Perform road test to allow ECM to learn

    • Large shift shock

    • Deterioration of fuel efficiency

    		 -

    • Transmission valve body assembly

    • Solenoid (SL1, SL2, SL3, SL4, SL5 and/or SL6) valve

    1. Reset memory

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn

    ECM

    (If possible, read the transaxle compensation code from the previous ECM)

    1. Reset memory*1

    2. Transfer transaxle compensation code

    3. Perform road test to allow ECM to learn

    ECM

    (If impossible, read the transaxle compensation code from the previous ECM)

    1. Reset memory*1

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn
    Automatic transaxle fluid ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
    ECM

    Perform the following procedures in the order shown:


    1. Reset memory

    2. Perform zero point calibration of the deceleration sensor

    3. CVT oil pressure calibration

    • DTCs are stored

    • Neutral control is prohibited

    • Deterioration of fuel efficiency

    		 -

    • Continuously variable transaxle assembly

    • Oil pressure sensor

    Perform the following procedures in the order shown:


    1. Reset memory

    2. Perform zero point calibration of the deceleration sensor

    3. CVT oil pressure calibration
    Airbag ECU assembly (Yaw rate and acceleration sensor)

    Perform the following procedures in the order shown:


    1. Reset memory

    2. Perform zero point calibration of the deceleration sensor

    3. CVT oil pressure calibration
    CVT fluid ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly

    • Tire pressure warning ECU and receiver

    • 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

    		 -
    Parking brake ECU assembly Operate the electric parking brake switch (combination switch assembly) Parking brake indicator light (red) blinks when the engine switch is first turned on (IG) -
    Skid control ECU (brake actuator assembly) Perform yaw rate and acceleration sensor zero point calibration and store system information

    • VSC disabled or malfunctions

    • DTCs are stored

    • Slip indicator light illuminates

    • ABS warning light illuminates

    		 -
    Yaw rate and acceleration sensor (airbag ECU assembly)

    Perform the following procedures in the order shown:


    1. Clear zero point calibration data and store system information

    2. Perform yaw rate and acceleration sensor zero point calibration and store system information
    Power steering ECU assembly

    • Perform torque sensor zero point calibration

    • Assist map writing

    • DTCs are stored

    • Steering effort different between turning steering wheel left and right

    • EPS warning light illuminates

    		 -
    Electric power steering column sub-assembly Perform torque sensor zero point calibration
    Telematics transceiver*3 Register vehicle information Emergency call service -
    Mobilephone battery*3 Reset mobilephone battery condition
    Navigation receiver assembly*2

    • Vehicle contract setting

    • Download necessary data

    • G-BOOK service

    • Some G-BOOK service content will be unavailable

    		 -
    Blind spot monitor sensor Blind spot monitor beam axis adjustment Blind Spot Monitor System -
    Spiral cable with sensor sub-assembly Steering angle neutral point (Initialize panoramic view monitor system) Panoramic View Monitor System -
    Parking assist ECU

    • Parking assist ECU initialization

    • Adjust steering angle
    Rear television camera assembly Rear television camera view adjustment
    Front television camera assembly Front television camera view adjustment

    • Side television camera assembly LH

    • Outer rear view mirror assembly LH

    • Side television camera assembly RH

    • Outer rear view mirror assembly RH

    		 Side television camera view adjustment

    • Front television camera assembly or radiator grille assembly

    • Rear television camera assembly

    • Side television camera assembly LH or outer rear view mirror assembly LH

    • Side television camera assembly RH or outer rear view mirror assembly RH

    		 Television camera view adjustment

    • 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

    • ECM

    • Main body ECU (multiplex network body ECU)

    		 Perform code registration (Immobiliser system)

    • Wireless Door Lock Control System

    • Smart Entry and Start System

    • Engine start function

    • Steering Lock System

    		 See Service Bulletin for the registration method.
    Position control ECU assembly Register the seat position Rear power seat function (Rear Power Seat Control System (w/ Memory)) -

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

    • No. 2 air conditioning radiator damper servo sub-assembly

    • No. 2 rear cooling unit damper servo sub-assembly (Rear air mix)

    • No. 2 rear cooling unit damper servo sub-assembly (Rear mode)

    • No. 1 blower damper servo sub-assembly

    • Air conditioning amplifier assembly

    		 Initialize servo motor (Air conditioning system) DTCs are stored -

    • Door window regulator assembly

    • Power window regulator motor assembly

    • Door glass

    • Door glass run

    		 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

    		 -

    • Sliding roof ECU (sliding roof drive gear assembly)

    • Rear slide roof glass sub-assembly

    • Sliding roof drive cable RH

    • Sliding roof drive cable LH

    		 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

    		 -
    Slide door motor unit Reset slide door close position Power Slide Door System -
    Back door motor unit Reset back door close position Power Back Door System -
    Headlight ECU sub-assembly LH

    • Synchronize vehicle information

    • Initialize headlight leveling ECU assembly

    		 Headlight leveling function -
    Rear height control sensor sub-assembly Initialize headlight ECU sub-assembly LH

    • *1: When the ECM is replaced with a new one, reset memory is unnecessary.

    • *2: w/ G-BOOK

    • *3: w/ Telematics Transceiver except G-BOOK