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
    EV Control ECU Vehicle Identification Number (VIN) registration DTC P0630-804 output -
    Code registration (Immobiliser system) Does not change to on (READY) See Service Bulletin for the registration method.
    Transmission control ECU assembly Code registration (Immobiliser system) Does not change to on (READY) See Service Bulletin for the registration method.

    • Lane departure warning camera (including installation/removal)

    • Windshield glass

    		 Adjust lane departure warning camera Lane departure alert system does not operate correctly -
    Driving support ECU Driving support ECU initialization DTC output -
    Millimeter wave radar sensor assembly Millimeter wave radar sensor assembly adjustment

    • Radar cruise control system does not operate correctly

    • Pre-crash safety system does not operate correctly

    		 -
    Brake booster with master cylinder assembly

    • Perform initialization and calibration of the linear solenoid valve

    • Perform yaw rate and acceleration sensor zero point calibration

    • DTCs are stored

    • ABS warning light illuminates

    • Brake warning light / yellow (minor malfunction) illuminates

    • Slip indicator light illuminates

    • VSC disabled or malfunctions

    		 -

    • Brake booster pump assembly

    • Brake master cylinder reservoir assembly

    • Brake pedal stroke sensor

    • Brake pedal

    1. Clear stored linear solenoid valve calibration data

    2. Perform initialization and calibration of the linear solenoid valve

    		 -
    Yaw rate and acceleration sensor (Airbag ECU assembly)

    1. Clear zero point calibration data

    2. Perform yaw rate and acceleration sensor zero point calibration

    		 -
    Steering column assembly (torque sensor and motor rotation angle built-in) Torque sensor 0 point correction and rotation angle sensor output correction

    • DTC output

    • Steering operation force differs between left and right sides

    		 -
    Power steering ECU assembly

    1. Assist map writing

    2. Torque sensor zero point correction and rotation angle sensor output correction

    • EPS control

    • EPS warning light illuminates

    		 -

    • Smart key ECU assembly (certification ECU)

    • Main body ECU (multiplex network body ECU

    • Immobiliser code ECU (ID code box)

    • Electrical key transmitter sub-assembly (electrical key)

    		 Code registration (Immobiliser system)

    • Wireless function

    • Smart function

    • Does not change to on (READY)

    		 See Service Bulletin for the registration method.

    • No. 1 blower damper servo sub-assembly

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

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

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

    • Air conditioner amplifier assembly

    		 Servo motor initialization DTC output -

    • Power window regulator motor assembly RH (Passenger seat)

    • Power window regulator motor assembly LH (Driver seat)

    • Power window regulator motor assembly RH (Rear right seat)

    • Power window regulator motor assembly LH (Rear left seat)

    • Front door window regulator sub-assembly (RH, LH)

    • Rear door window regulator sub-assembly (RH, LH)

    • Front door glass (RH, LH) or front door glass run (RH, LH)

    • Rear door glass (RH, LH) or rear door glass run (RH, LH)

    • Because of assembly adjustment, etc., causing sliding change, improper reversal has occurred.

    		 Power window system initialization

    • AUTO operation function

    • Jam protection function

    • Entanglement prevention function

    • Key-off (IG OFF) operation

    • Remote operation of each seat by driver switch

    • Window open alert function

    		 -
    Headlight light control ECU sub-assembly LH replacement

    • Headlight light control ECU sub-assembly LH vehicle information registration

    • Headlight light control ECU sub-assembly LH initialization

    		 Auto-leveling system does not operate properly -
    Rear height control sensor sub-assembly removal/installation and replacement Headlight light control ECU sub-assembly initialization
    Blind spot monitor sensor Blind spot monitor beam axis inspection DTC output -
    Alignment adjustment and suspension / underbody component installation/removal and replacement

    1. Clear zero point calibration data

    2. Perform yaw rate and acceleration sensor zero point calibration

    		 VSC malfunctioning -
    Adjust lane departure warning camera Lane departure alert system does not operate correctly -
    Procedure that changes vehicle height, such as replacing the suspension. Headlight light control ECU assembly LH (main) initialization Auto-leveling system does not operate properly -