Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: System Description

SYSTEM DESCRIPTION

DESCRIPTION

The power steering system generates torque through the operation of the motor and the reduction gear installed on the column shaft in order to assist steering effort.

The power steering ECU assembly determines the direction and the amount of assist power in accordance with the vehicle speed signals and signals from the torque sensor built into the electric power steering column sub-assembly. As a result, the power steering ECU assembly adjusts the steering effort so that it is lighter during low speed driving and heavier during high speed driving.

(a) Power steering ECU assembly:

The power steering ECU assembly calculates assist power based on steering torque signals from the torque sensor and vehicle speed signals from the skid control ECU (brake actuator assembly).

(b) Torque sensor:

The torque sensor detects the steering effort generated when the steering wheel is turned and converts it to an electrical signal.

(c) Power steering motor:

The power steering motor generates torque in accordance with the current from the power steering ECU to assist the steering effort.

    Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of ...

    System Diagram
    SYSTEM DIAGRAM ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: ECU Malfunction (B1003)
    DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Note B1003 ECU Malfunction The network gateway ECU detects an internal malfunction. Network gateway ECU - PROCEDURE 1. RECONFIRM DTC OUTPUT (a) Connect the Techstream to the DLC3. (b) Turn the ...

    Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System: Interior Light Circuit
    DESCRIPTION The main body ECU (multiplex network body ECU) controls the operation of the following lights: Map Light Assembly (Front Dome Light) Spot Light Assembly (Rear Dome Light) Front Door Scuff Plate LH (Scuff Light LH)(w/ Scuff Light) Front Door Scuff Plate RH (Scuff Light RH)(w/ Scu ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2025 Copyright www.lexusrx.net
    0.0182