Toyota Yaris: Power Steering System / Precaution

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Steering / Power Assist Systems / Power Steering System / Precaution

PRECAUTION

HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM

(a) This vehicle is equipped with a Supplemental Restraint System (SRS). Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing. This may cause a serious accident.

Before servicing (including inspection, replacement, removal and installation of parts), be sure to read the precautionary notices for the Supplemental Restraint System.

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PRECAUTIONS FOR REMOVAL, INSTALLATION AND REPLACEMENT OF ELECTRONIC POWER STEERING COMPONENTS

(a) Be sure to align the front wheels straight ahead when removing and installing the steering gear assembly.

(b) When disconnecting the steering intermediate shaft assembly, be sure to place matchmarks before starting the operation.

(c) If the power steering ECU assembly or electric power steering column sub-assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

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HANDLING PRECAUTION

(a) When handling electronic parts:

(1) Do not subject any parts such as ECUs and relays to any impact. Replace them with new ones if dropped or subjected to a strong impact.

(2) Do not expose any electronic parts to high temperatures or humidity.

(3) In order to prevent deformation or malfunctions due to static electricity, do not touch the connector terminals.

(b) When handling the power steering ECU assembly:

(1) When replacing the power steering ECU assembly, make sure to replace each power steering ECU assembly with a new one.

NOTICE:

  • Do not use a power steering ECU assembly intended from another vehicle (demo models, etc.).
  • When the power steering ECU assembly has been replaced, perform ECU security key registration.

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(2) When the power steering ECU assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

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(c) When handling the electric power steering column sub-assembly:

(1) Do not subject the electric power steering column sub-assembly (especially the motor and torque sensor) to any impact. Replace the electric power steering column sub-assembly with a new one if subjected to a strong impact.

(2) Do not pull the wire harness when moving the electric power steering column sub-assembly.

(3) When the electric power steering column sub-assembly has been replaced, perform Power Steering ECU Initial Setting (assist map writing).

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(d) When disconnecting and reconnecting the connectors:

(1) Before disconnecting connectors related to the power steering system, turn the ignition switch to ON, center the steering wheel, turn the ignition switch off, and then disconnect the connectors.

(2) Before reconnecting connectors related to the power steering system, ensure that the ignition switch is off. Then center the steering wheel and turn the ignition switch to ON.

NOTICE:

Do not turn the ignition switch to ON when the steering wheel is not centered.

(3) If the above steps are not performed, the steering center point (zero point) may be offset causing a difference in steering effort when turning left and right. If there is a difference in steering effort when turning left and right, perform Power Steering ECU Initial Setting (assist map writing).

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PRECAUTIONS FOR CAN COMMUNICATION

(a) CAN communication lines are used to receive information from the skid control ECU (Brake actuator assembly) and ECM and to transmit warnings to the combination meter assembly. When problems are detected in the CAN communication lines, CAN communication DTCs are stored

(b) If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first.

(c) The wiring used for each communication line is a twisted pair of wires that have an equal length. Do not temporarily repair a CAN communication line with a bypass wire or equivalent.

    Power Steering System

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    Parts Location

    PARTS LOCATION ILLUSTRATION *A w/ Toyota Safety Sense - - *1 FORWARD RECOGNITION CAMERA *2 POWER STEERING ECU ASSEMBLY - POWER STEERING MOTOR *3 SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) *4 ELECTRIC POWER STEERING COLUMN SUB-ASSEMBLY - TORQUE SENSOR *5 NO...

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    Toyota Yaris XP210 (2020-2022) Owner's Manual: Liftgate/Trunk Lid


    WARNING Never allow a person to ride in the luggage compartment/trunk Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision...

    Categories

    Liftgate/Trunk Lid

    WARNING

    Never allow a person to ride in the luggage compartment/trunk

    Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.

    Do not drive with the liftgate/trunk lid open

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