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

Refer to the TOYOTA Repair Manual for each inspection procedure.


  1. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

    Replacement Part Necessary Procedure Effect/Inoperative Function when Necessary Procedures are not Performed See page

    • Throttle body with motor assembly

    • Cleaning the deposits from the throttle body with motor assembly

    • Engine assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake camshaft)

    • Camshaft timing gear assembly

    • Piston or piston ring

    • Mass air flow meter

    • Fuel injector assembly

    • Fuel pump with filter assembly

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • No. 1 ignition coil (No. 1 to No. 4 cylinder)

    • EGR valve assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock sensor

    		 Inspection after repair Poor idle, engine starting, etc -
    Brake booster with master cylinder assembly

    • Initialization and calibration of the linear solenoid valve

    • Yaw rate and acceleration sensor zero point calibration

    • ABS warning light illumination

    • Brake warning light/yellow (minor malfunction) illumination

    • Brake warning light/red (minor malfunction) illumination

    • Slip indicator light illumination

    • VSC disable or malfunctioning

    		 -

    • Brake pedal stroke sensor assembly

    • Brake pedal

    • Clearing stored linear solenoid valve calibration data

    • Initialization and calibration of the linear solenoid valve

    		 -
    Yaw rate and acceleration sensor (airbag sensor assembly)

    • Clearing zero point calibration data

    • 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

    		 -
    Power steering ECU assembly

    • Torque sensor zero point calibration

    • Assist map writing

    • P/S 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

      w/ Power Switch:

    • Certification ECU (smart key ECU assembly)

    • Steering lock ECU (steering lock actuator assembly)

    • ID code box (immobiliser code ECU)

    • Hybrid vehicle control ECU

    • Electrical key transmitter sub-assembly

    • Code registration (Engine immobiliser system)

    • Code registration (Wireless door lock control system)

    • Wireless door lock control system

    • Entry and start system

    • Hybrid control system start

    • Steering lock system

    • Push-button start system

    		 Refer to the Service Bulletin for the registration procedure.

      w/o Power Switch:

    • Transponder key ECU assembly

    • Hybrid vehicle control ECU

    • Key

    		 Code registration (Engine immobiliser system) Hybrid control system start Refer to the Service Bulletin for the registration procedure.

      w/o Power Switch:

    • Door control transmitter

    • Door control receiver

    		 Code registration (Wireless door lock control system) Wireless door lock control system -

    • Door window regulator assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up/down function

    • Jam protection function

    • Operation function after ignition switch is turned off

    		 -
    Pre-crash safety city sensor

    • Recognition camera/ target position memory

    • Beam axis learning

    • Lane departure alert system

    • Pre-crash safety system

    • Road Sign Assist System

    		 -