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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Hydraulic) (Service Information) >> BRAKE PEDAL (for HV Model) >> Adjustment [10/2018 - ] >> Procedure

Adjustment [10/2018 - ]: Procedure

  1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT 
    1. Remove the accelerator pedal assembly.

      Refer to REMOVAL [10/2018 - ]

    2. Remove the No. 1 air duct.

      Refer to REMOVAL [10/2018 - 07/2022] , or refer to REMOVAL [07/2022 - ]

    3. Check the brake pedal height.
      NOTE:
      • Inspect and adjust the brake pedal height with the floor carpet folded back.
      • When performing the measurement, make sure that the measuring device is contacting the surface of the dash panel insulator assembly clip.
      1. Measure the shortest distance between the brake pedal pad surface and dash panel insulator assembly clip.
        GTY795195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Brake Pedal Pad *2 Dash Panel Insulator Assembly Clip
        *a Brake Pedal Height - -

        Brake Pedal Height from Dash Panel Insulator Assembly Clip

        154.5 to 164.5 mm (6.08 to 6.48 in.)

        If the pedal height is not as specified, adjust the brake pedal height according to the procedure below.

    4. Adjust the brake pedal height.
      1. Remove the stop light switch assembly.

        Refer to REMOVAL [10/2018 - ]

        GTY571427Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Stop Light Switch Assembly
        *2 Lock Nut
        *a Brake Pedal Height
        *b Dash Panel Insulator Assembly Clip
      2. Loosen the clevis lock nut.
      3. Adjust the brake pedal height by turning the push rod.

        Brake Pedal Height from Dash Panel Insulator Assembly Clip

        154.5 to 164.5 mm (6.08 to 6.48 in.)

      4. Tighten the clevis lock nut.

        Torque: 26 N.m (265 kgf/cm, 19 ft.lbf) 

      5. Install the stop light switch assembly.

        Refer to INSTALLATION [10/2018 - 07/2022] , or refer to INSTALLATION [07/2022 - ]

    5. Install the No. 1 air duct.

      Refer to INSTALLATION [10/2018 - ]

    6. Install the accelerator pedal assembly.

      Refer to INSTALLATION [10/2018 - ]

  2. INSPECT AND ADJUST BRAKE PEDAL STROKE SENSOR ASSEMBLY 
    1. Inspect the brake pedal stroke sensor assembly.
      1. Connect the Techstream to the DLC3 with the power switch off.
      2. Turn the power switch on (IG).
      3. Turn the Techstream on and enter the following menus: Chassis / ABS/VSC/TRAC / Data List / Stroke Sensor.

        Chassis > ABS/VSC/TRAC > Data List 

        Tester Display
        Stroke Sensor
      4. Read the stroke sensor value without the brake pedal depressed.

        Standard Voltage (without the brake pedal depressed)

        0.8 to 1.2 V

        If the stroke sensor value is not within the standard voltage, adjust the brake pedal stroke sensor assembly.

    2. Adjust the brake pedal stroke sensor assembly.
      1. Remove the No. 1 air duct.

        Refer to REMOVAL [10/2018 - 07/2022] , or refer to REMOVAL [07/2022 - ]

      2. Loosen the 2 nuts.
        GTY813588Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:

        Do not depress the brake pedal after turning the power switch on (IG).

      3. Read the stroke sensor value in the Data List, and turn the brake pedal stroke sensor assembly slowly to the right or left to adjust the output voltage so that it is within the following range.
        GTY835707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard Voltage (without the brake pedal depressed)

        0.8 to 1.2 V

      4. Tighten the 2 nuts.

        Torque: 8.5 N.m (87 kgf/cm, 75 in.lbf) 

      5. Turn the Techstream off and turn the power switch off.
      6. Disconnect the Techstream.
      7. Install the No. 1 air duct.

        Refer to INSTALLATION [10/2018 - ]

    3. Perform linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization.

      Refer to INITIALIZATION [10/2018 - ]

  3. INSPECT BRAKE PEDAL FREE PLAY 
    1. Depress the brake pedal until a slight resistance is felt. Measure the brake pedal free play as shown in the illustration.
      GTY452630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Brake Pedal Free Play

      Brake Pedal Free Play

      1.0 to 6.0 mm (0.0394 to 0.236 in.)

      If the pedal free play is not as specified, check the stop light switch clearance.

      Refer to PROCEDURE - Step 1 [10/2018 - 07/2022] , or refer to PROCEDURE - Step 1 [07/2022 - ]

      If the pedal free play is as specified, proceed to the Inspect Brake Pedal Reserve Distance procedure.

  4. INSPECT BRAKE PEDAL RESERVE DISTANCE 
    1. Remove the No. 1 instrument panel under cover sub-assembly.

      Refer to PROCEDURE - Step 3 [10/2018 - 07/2022] , or refer to PROCEDURE - Step 3 [07/2022 - ]

    2. Remove the front No. 1 console box insert.

      Refer to PROCEDURE - Step 24 [10/2018 - 07/2022] , or refer to PROCEDURE - Step 22 [07/2022 - ]

    3. Turn back the front floor carpet assembly.
    4. With the power switch on (READY), depress the brake pedal and measure the brake pedal reserve distance as shown in the illustration.
      GTY801146Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Brake Pedal Pad *2 Column Hole Cover Silencer Sheet
      *a Brake Pedal Reserve Distance *b Measuring Plane of Column Hole Cover Silencer Sheet
      *c 70 mm (2.76 in.) - -

      Brake Pedal Reserve Distance from Column Hole Cover Silencer Sheet at 300 N (31 kgf, 67.4 lbf)

      109.0 mm (4.29 in.) or more

      If the distance is not as specified, troubleshoot the brake system.

      Refer to PROBLEM SYMPTOMS TABLE [10/2018 - ]

    5. Install the front floor carpet assembly to its original position.
    6. Install the front No. 1 console box insert.

      Refer to PROCEDURE - Step 5 [10/2018 - 07/2022] , or refer to PROCEDURE - Step 5 [07/2022 - ]

    7. Install the No. 1 instrument panel under cover sub-assembly.

      Refer to PROCEDURE - Step 26 [10/2018 - 07/2022] , or refer to PROCEDURE - Step 24 [07/2022 - ]

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