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 MIL comes on / -

    for 8AR-FTS (w/ canister pump module)

    for 8AR-FTS (w/o canister pump module)
    Heavy Knock History -
    ECU communication ID registration (Immobiliser system) Engine start function See the Service Bulletin for the registration method.

      for 8AR-FTS (w/ Canister Pump Module)

    • Piston ring

    		 Clear Heavy Knock History - for 8AR-FTS (w/ canister pump module)

      for 8AR-FTS (w/ Canister Pump Module)

    • 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

    • Port fuel injector assembly

    • Direct fuel injector assembly

    • 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

    • Heated oxygen 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 8AR-FTS (w/o Canister Pump Module)

    • Piston ring

    		 Clear Heavy Knock History - for 8AR-FTS (w/o canister pump module)

      for 8AR-FTS (w/o Canister Pump Module)

    • 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

    • Port fuel injector assembly

    • Direct fuel injector assembly

    • 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

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • 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

    • Pre-crash safety system

    		 -
    Lane departure warning camera Adjust lane departure warning camera Lane departure alert system -
    Engine stop and start ECU

    1. Upload the number of starter operations

    2. Reset air conditioning information

    3. Learning of air conditioning information

    4. Clear the zero point calibration data

    5. Perform zero point calibration of the deceleration sensor

    6. Check electromagnetic oil pump

    		 Stop and start system -

    Starter assembly

    Note

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

    		 Clear the number of starter operations
    Vehicle with a non-specified battery Perform battery type switching
    Electromagnetic oil pump Check electromagnetic oil pump
    Air conditioning amplifier assembly

    1. Reset air conditioning information

    2. Learning of air conditioning information
    Automatic transmission assembly

    1. Set transmission compensation code (step 1)*1

    2. Perform road test to allow TCM to learn

    • Large shift shock

    • Deterioration of fuel efficiency

    for AA81E (2GR-FSE) Initialization

    for AA81E (2GR-FSE) Registration

    • Valve body assembly

    • Shift solenoid valve SL1, 2, 3, 4 and 5

    		 Perform road test to allow TCM to learn

    TCM

    (If possible, read the transmission compensation code from the previous TCM)

    1. Transfer transmission compensation code (step 2)*2

    2. Perform road test to allow TCM to learn

    TCM

    (If impossible, read the transmission compensation code from the previous TCM)

    1. Set transmission compensation code (step 1)*3

    2. Perform road test to allow TCM to learn

    • Engine assembly

    • ECM

    1. Reset memory

    2. Perform road test to allow TCM to learn
    Automatic transmission assembly

    1. Set transmission compensation code (step 1)*1

    2. Perform road test to allow ECM to learn

    • Large shift shock

    • Deterioration of fuel efficiency

    for AA81E (8AR-FTS) Initialization

    for AA81E (8AR-FTS) Registration

    • Transmission valve body assembly

    • Shift solenoid valve SL1, 2, 3, 4 and 5

    		 Perform road test to allow ECM to learn

    ECM

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

    1. Transfer transmission compensation code (step 2)*8

    2. Perform road test to allow ECM to learn

    ECM

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

    1. Set transmission compensation code (step 1)*3

    2. Perform road test to allow ECM to learn
    Engine assembly

    1. Reset memory

    2. Perform road test to allow ECM to learn
    Absorber control ECU Perform registration of vehicle identification information

    • Interrupts damping force control after moving to the 9th step.

    • DTCs are output

    		 -

    • Tire pressure warning ECU and receiver

    • Tire pressure warning valve and transmitter

    • Transmitter ID registration

    • Initialization

    • 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 Initialization

    for Registration
    Skid control ECU (brake actuator assembly) Yaw rate and acceleration sensor zero point calibration and store system information.

    • VSC disabled or malfunctioning

    • DTCs are output

    • Slip indicator light illuminated

    • ABS warning light illuminated

    		 -
    Yaw rate and acceleration sensor

    1. Clearing zero point calibration data and system information.

    2. Yaw rate and acceleration sensor zero point calibration and store system information.
    Clearing zero point calibration data and system information. Stop and start system -

    • Power steering ECU assembly

    • Power steering link assembly

    		 Perform rotation angle sensor initialization and torque sensor zero point calibration

    • DTCs are output

    • Steering effort different between turning steering wheel left and right

    		 -
    Power steering ECU assembly Assist map writing

    • DTCs are output

    • EPS warning light illuminated

    • VGRS ECU (front steering control ECU)

    • Steering actuator assembly

    • Parts between the steering wheel and tires have been removed/installed, replaced or adjusted

    		 Perform actuator angle neutral point calibration and initialization

    • Variable gear ratio steering system

    • Steering wheel off-center

    • DTCs are output

    for Initialization

    for Calibration

    • Radio receiver assembly*6

    • Telematics transceiver*4

    		 Vehicle contract setting

    • G-BOOK service

    • Emergency call service

    *4

    *5
    Radio receiver assembly*6 Download necessary data Some G-BOOK service content will be unavailable.

    *4

    *5
    Radio receiver assembly Parking assist monitor system initialization Parking assist monitor system (w/ Parallel Parking Assist Function) w/ Parallel Parking Assist Function
    Spiral cable with sensor sub-assembly

    • Steering angle neutral point (Initialize parking assist monitor system)

    • Steering angle setting

    • Suspension, tires, etc.

    • Rear television camera assembly

    		 Rear television camera assembly optical axis (Back camera position setting)
    Spiral cable with sensor sub-assembly

    • Steering angle neutral point (Initialize parking assist monitor system)

    • Steering angle setting

    		 Parking assist monitor system (w/o Parallel Parking Assist Function) w/o Parallel Parking Assist Function
    Suspension, tires, etc. Rear television camera assembly optical axis (Back camera position setting)
    Rear television camera assembly

    • Parking assist monitor system initialization

    • Rear television camera assembly optical axis (Back camera position setting)
    Blind spot monitor sensor Blind spot monitor beam axis inspection DTCs are output -

    • Inner rear view mirror assembly

    • Garage door opener transmitter

    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 assembly)

    • ECM

    • Main body ECU (multiplex network body ECU)

    • Electrical key transmitter sub-assembly

    • Telematics transceiver*4

    		 Code registration (Immobiliser system)

    • Wireless door lock control system

    • Entry and start system

    • Engine start

    • Steering lock system

    		 See Service Bulletin for the registration method.
    Telephone Transceiver Assembly Set the contract mode Blocking system -

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

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

    • No. 2 air conditioning radiator damper servo sub-assembly (front passenger side)

    • No. 3 air conditioning radiator damper servo sub-assembly

    • No. 4 air conditioning radiator damper servo sub-assembly

    • No. 5 air conditioning radiator damper servo sub-assembly

    • No. 6 air conditioning radiator damper servo sub-assembly*9

    • No. 1 blower damper servo sub-assembly

    		 Initialization servo motor (Air conditioning system) DTCs are output -

    • 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*7

    • Key-off operation function

    • Window open warning function

    		 -

    • Sliding roof ECU (sliding roof drive gear sub-assembly)

    • Sliding roof glass sub-assembly

    • Sliding roof drive cable sub-assembly

    		 Initialize sliding roof system

    • Auto operation function

    • Jam protection function

    • Key-off operation function

    • Key-linked function

    • Wireless transmitter-linked function*7

    • Sliding roof open warning function

    		 -
    Headlight leveling ECU assembly

    • Synchronize the vehicle information

    • Perform headlight leveling ECU assembly initialization

    		 Headlight leveling function -
    Rear height control sensor sub-assembly Perform headlight leveling ECU assembly initialization Headlight leveling function

    • *1: New automatic transmission's compensation code.

    • *2: Read the compensation code from the previous TCM, then transfer it to the new TCM.

    • *3: Set the transmission compensation code of the current automatic transmission.

    • *4: w/ Telematics transceiver

    • *5: w/o Telematics transceiver

    • *6: w/ G-BOOK System

    • *7: w/ Canister pump module

    • *8: Read the compensation code from the previous ECM, then transfer it to the new ECM.

    • *9: w/ Stop and Start System