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 not Performed Note
    ECM Perform Vehicle Identification Number (VIN) or frame number registration

    • MIL illuminates

    • DTC P0630 is output

    		 -

    • Pre-crash safety city sensor

    • Windshield glass

    1. Recognition camera/target position memory

    2. Beam axis learning

    • Lane departure alert system

    • Road sign assist system

    • Pre-crash safety system

    • Automatic high beam system

    		 -

    • 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" are met, TPWS indicator blinks for 1 minute, and then illuminates

    • Tire pressure warning function

    for Initialization

    for Registration
    Skid control ECU (Brake booster with master cylinder assembly)

    • Perform initialization and calibration of the linear solenoid valve

    • Perform yaw rate and acceleration sensor zero point calibration

    • ABS warning light illumination

    • Brake warning light/yellow (minor malfunction) illumination

    • Slip indicator light illumination

    • VSC disable or malfunctioning

    for Initialization

    for calibration

    • Brake pedal stroke sensor assembly

    • Brake pedal

    • Clear stored linear solenoid valve calibration data

    • Perform initialization and calibration of the linear solenoid valve

    		 -
    Yaw rate and acceleration sensor (Airbag sensor assembly)

    • Clear zero point calibration data

    • Perform yaw rate and acceleration sensor zero point calibration

    		 -
    Power steering ECU assembly

    • Torque sensor zero point calibration

    • Assist map writing

    • EPS warning light comes on

    • EPS control

    		 -
    Electric power steering column sub-assembly Torque sensor zero point calibration Steering effort is different between turning steering wheel to left and right

    • Spiral cable with sensor sub-assembly

    • Clearance warning ECU assembly

    		 Initialize simple intelligent parking assist system Simple intelligent parking assist system -
    Hybrid vehicle control ECU assembly ECU communication ID registration (Immobiliser system) Entry and start system See Service Bulletin for the registration method.

    • Certification ECU (smart key ECU assembly)

    • ID code box (immobiliser code ECU)

    • Transmission control ECU assembly

    • Electrical key transmitter sub-assembly

    		 Code registration (Immobiliser system)

    • Wireless door lock control system

    • Entry and start system

    • Push-button start

    • Air mix damper servo sub-assembly (for driver side)

    • Air mix damper servo sub-assembly (for front passenger side)

    • Mode damper servo sub-assembly

    • Recirculation damper servo sub-assembly

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

    • Roof sunshade ECU (sliding roof drive gear assembly)

    • Sliding roof housing sub-assembly

    		 Initialize roof sunshade system

    • Auto open and close Function

    • Jam protection function

    		 -

    • Front door window regulator assembly (for driver door)*2

    • Door window regulator sub-assembly*1

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up and down function

    • Jam protection function

    • Catch protection function

    • Remote control function*1

    • Key-off operation function

    		 -

    • headlight swivel ECU assembly

    • Rear height control sensor sub-assembly

    		 Perform headlight swivel ECU assembly initialization Automatic headlight beam level control system -

    • *1: for Models with Jam Protection Function on 4 Windows

    • *2: for Models with Jam Protection Function on Driver Door Window Only