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 Vehicle Identification Number (VIN) registration MIL comes on / MIL does not come on -
    ECU communication ID registration (Immobiliser system) Engine start function See the Service Bulletin for the registration method.

    • Throttle body with motor assembly

    • Cleaning the deposits from the throttle body with motor assembly

    • Camshaft timing control motor

    • Removal and installation of a camshaft timing control motor

    • Camshaft timing gear assembly

    • Removal and installation of a 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

    • Fuel injector assembly (for port injection)

    • Fuel injector assembly (for direct injection)

    • Fuel pump (for low pressure side)

    • Fuel pump (for high pressure side)

    • Air fuel ratio sensor

    • Heated oxygen sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Adjust valve clearance

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

    		 Inspection after repair Poor idle, engine start, 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 -
    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

    		 -

    • 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

    1. Reset memory

    2. Perform road test to allow TCM to learn
    ECM Reset memory
    Torque vectoring differential ECU assembly All Learning Torque vectoring differential system -
    Torque vectoring differential motor sub-assembly Motor Exchange Learning
    Torque vectoring differential carrier assembly ASSY Exchange Larning

    • 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

    		 -
    Skid control ECU (brake actuator assembly) Perform yaw rate and acceleration sensor and roll rate and vertical acceleration sensor zero point calibration and store system information

    • VSC disabled or malfunctioning

    • DTCs are output

    • Slip indicator light illuminated

    • ABS warning light illuminated

    • Theft deterrent system (Tilt sensor)

    		 -

    • Yaw rate and acceleration sensor

    • Roll rate and vertical acceleration sensor

    1. Clear zero point calibration data and system information.

    2. Perform yaw rate and acceleration sensor and roll rate and vertical acceleration sensor zero point calibration and store system information

    • 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
    Spiral cable with sensor sub-assembly

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

    • Steering angle setting

    		 Parking assist monitor system -
    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 adjustment 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 -

    • Radio receiver assembly*4

    • Telematics transceiver*4

    		 Vehicle contract setting

    • G-BOOK service

    • Emergency call service

    		 -
    Radio receiver assembly*4 Download necessary data Some G-BOOK service content will be unavailable. -

    • 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

    • Smart Access system with push-button start

    • Engine start

    • Steering lock system

    • Telematics 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. 1 blower damper servo sub-assembly

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

    • Door window regulator sub-assembly

    • Power window regulator motor assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up and down function

    • Jam protection function

    • Catch protection function

    • Remote control function

    • Key-linked function

    • Wireless transmitter-linked function

    • Key-off operation function

    • Window open warning function

    • Door-linked window control

    		 -

    • 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

    • Sliding roof open warning function

    		 -
    Headlight light control ECU sub-assembly LH

    1. Synchronize the vehicle information

    2. Perform headlight light control ECU sub-assembly LH initialization

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

    • Active rear wing assembly

    • Spoiler control ECU assembly

    		 Initialization Active rear wing system -

    • *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/ G-BOOK