Brake Actuator Installation

Brake. Lexus Is250, Is220D. Gse20 Ale20
Brake Control. Lexus Is250, Is220D. Gse20 Ale20

  1. INSTALL BRAKE ACTUATOR BOLT CUSHION

  2. INSTALL BRAKE ACTUATOR BRACKET ASSEMBLY

  3. INSTALL BRAKE ACTUATOR ASSEMBLY WITH BRACKET

  4. CONNECT NO. 3 FRONT BRAKE TUBE (for LHD)

  5. CONNECT NO. 2 FRONT BRAKE TUBE (for RHD)

  6. INSTALL BRAKE MASTER CYLINDER SUB-ASSEMBLY

  7. INSTALL NO. 3 ENGINE ROOM RELAY BLOCK

  8. ADD RESERVOIR WITH BRAKE FLUID

  9. BLEED BRAKE MASTER CYLINDER SUB-ASSEMBLY

  10. BLEED BRAKE LINE

  11. BLEED BRAKE ACTUATOR ASSEMBLY

  12. INSPECT DTC

  13. INSPECT FLUID LEVEL IN RESERVOIR

  14. INSPECT FOR BRAKE FLUID LEAKAGE

  15. INSTALL FRONT WHEEL

  16. INSTALL COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

  17. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY LH

  18. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY RH

  19. INSTALL FRONT WIPER ARM HEAD CAP

  20. INSTALL FRONT UPPER FENDER PROTECTOR LH

  21. INSTALL FRONT UPPER FENDER PROTECTOR RH

  22. INSTALL ENGINE ROOM SIDE COVER RH

  23. INSTALL ENGINE ROOM SIDE COVER LH

  24. INSTALL COOL AIR INTAKE DUCT SEAL

  25. PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION

  26. INSPECT SENSOR SIGNAL

  27. INSPECT ACTUATOR WITH INTELLIGENT TESTER

Brake Actuator -- Installation



1. INSTALL BRAKE ACTUATOR BOLT CUSHION


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the 2 brake actuator bolt cushions and 2 bolts to the brake actuator assembly.



2. INSTALL BRAKE ACTUATOR BRACKET ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the brake actuator bolt cushion with the actuator bracket assembly.

  1. Install the brake actuator to the actuator bracket assembly with the 2 nuts.

    Torque:
    5.4 N*m{55 kgf*cm, 48 in.*lbf}


3. INSTALL BRAKE ACTUATOR ASSEMBLY WITH BRACKET


  1. Install the actuator assembly with bracket to the body with the 2 bolts and nut.


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation

    Torque:
    19 N*m{195 kgf*cm, 14 ft.*lbf}
    NOTICE:
    Do not to damage the brake tubes.
  1. Install the grommet to the body.

    NOTICE:
    Make sure that the grommet is installed correctly.


  1. Temporarily tighten each brake tube to the correct positions of the brake actuator assembly with bracket as shown in the illustration.


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation

    HINT:
    1. *1: To Front Wheel Cylinder RH
    2. *2: To Front Wheel Cylinder LH
    3. *3: To Rear Wheel Cylinder RH
    4. *4: To Rear Wheel Cylinder LH
    5. *5: From Front Master Cylinder
    6. *6: From Rear Master Cylinder


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Using SST, fully tighten each brake tube.

    SST
    09023-00101
    Torque:
    15 N*m{155 kgf*cm, 11 ft.*lbf}
  1. Connect the actuator connector.

    NOTICE:
    Make sure that the connector is locked securely.


4. CONNECT NO. 3 FRONT BRAKE TUBE (for LHD)


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Using SST, connect the No. 3 front brake tube to the flexible hose.

    SST
    09023-00101
    Torque:
    15 N*m{155 kgf*cm, 11 ft.*lbf}


5. CONNECT NO. 2 FRONT BRAKE TUBE (for RHD)


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Using SST, connect the No. 2 front brake tube to the flexible hose.

    SST
    09023-00101
    Torque:
    15 N*m{155 kgf*cm, 11 ft.*lbf}


6. INSTALL BRAKE MASTER CYLINDER SUB-ASSEMBLY
  1. Install a new O-ring to the brake master cylinder sub-assembly.



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the brake master cylinder sub-assembly to the booster assembly with the 2 nuts.

    Torque:
    12.5 N*m{127 kgf*cm, 9 ft.*lbf}


  1. Install the brake actuator assembly to the actuator bracket with the 2 cap nuts.

    Torque:
    5.5 N*m{55 kgf*cm, 48 in.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Using SST, connect the 2 brake lines to the brake master cylinder sub-assembly.

    SST
    09023-00101
    Torque:
    15 N*m{155 kgf*cm, 11 ft.*lbf}
  1. Engage the clamp and connect the warning switch connector.



7. INSTALL NO. 3 ENGINE ROOM RELAY BLOCK


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the No. 3 engine room relay block with the bolt and nut.

    Torque:
    12.5 N*m{127 kgf*cm, 9 ft.*lbf}


8. ADD RESERVOIR WITH BRAKE FLUID


    Lexus Is250, Is220D. Gse20 Ale20
  1. Fill the reservoir with brake fluid.

    Fluid:
    SAE J1703 or FMVSS No. 116 DOT3


9. BLEED BRAKE MASTER CYLINDER SUB-ASSEMBLY
HINT:
  1. If the master cylinder is reinstalled or if the reservoir becomes empty, bleed the air from the master cylinder.
  2. To prevent paint damage due to brake fluid, cover the painted surface with a shop rag or a piece of cloth.


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Disconnect the 2 brake lines from the master cylinder.

  1. Slowly depress the brake pedal and hold it (*1).



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Cover the 2 outer holes with fingers, and release the brake pedal (*2).

  1. Repeat (*1) and (*2) 3 or 4 times.

  1. Using SST, connect the brake lines to the master cylinder.

    SST
    09023-00101
    Torque:
    15 N*m{155 kgf*cm, 11 ft.*lbf}


10. BLEED BRAKE LINE
NOTICE:
Bleed the brake line at the wheel furthest from the master cylinder.


    Lexus Is250, Is220D. Gse20 Ale20
  1. Connect the vinyl tube to the bleeder plug.

  1. Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed (*3).



    Lexus Is250, Is220D. Gse20 Ale20
  1. When fluid no longer comes out, tighten the bleeder plug, then release the brake pedal (*4).

  1. Repeat (*3) and (*4) until all the air in the fluid is completely bled out.

  1. Using SST, tighten the bleeder plug completely.

    SST
    09023-00101
    Torque:
    11 N*m{110 kgf*cm, 8 ft.*lbf}
  1. Repeat the above procedures for each wheel to bleed the air from the brake line.



11. BLEED BRAKE ACTUATOR ASSEMBLY
NOTICE:
After bleeding the air from the brake system, if the correct height or feel of the brake pedal cannot be obtained, bleed the air from the brake actuator assembly with the intelligent tester by following the procedures below.
  1. Depress the brake pedal more than 20 times with the engine switch off.



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Connect the intelligent tester to the DLC3, then turn the engine switch on (IG).

    NOTICE:
    Do not start the engine.
  1. Turn the intelligent tester power on and select "AIR BLEEDING" on the screen.

    NOTICE:
    1. Refer to the intelligent tester operator's manual for further details.
    2. Bleed the brake actuator assembly by following the steps displayed on the intelligent tester.


  1. Bleed the air from the actuator according to "Step 1: Increase" on the intelligent tester display.

    NOTICE:
    Make sure that the master cylinder reservoir tank does not become empty of brake fluid.



      Lexus Is250, Is220D. Gse20 Ale20
    1. Connect a vinyl tube to either one of the bleeder plugs.

    2. Depress the brake pedal several times, then loosen the bleeder plug connected to the vinyl tube with the pedal depressed (*5).



    3. Lexus Is250, Is220D. Gse20 Ale20
    4. When fluid no longer comes out, tighten the bleeder plug, then release the brake pedal (*6).

    5. Repeat (*5) and (*6) until all the air in the fluid is completely bled.

    6. Using SST, tighten the bleeder plug completely.

      SST
      09023-00101
      Torque:
      11 N*m{110 kgf*cm, 8 ft.*lbf}
    7. Repeat the above procedures for the rest of the wheels to bleed the air from the brake lines.



  1. Bleed the air from the suction line according to "Step 2: Inhalation" on the intelligent tester display.

    NOTICE:
    1. Bleed the suction line by following the steps displayed on the intelligent tester.
    2. Make sure that the master cylinder reservoir tank does not become empty of brake fluid.



      Lexus Is250, Is220D. Gse20 Ale20
    1. Connect a vinyl tube to the bleeder plug at the right front wheel or the right rear wheel and loosen the bleeder plug.

    2. Operate the brake actuator assembly to bleed the air using the intelligent tester (*7).

      NOTICE:
      1. The operation stops automatically in 4 seconds.
      2. At this time, be sure to release the brake pedal.


    3. Lexus Is250, Is220D. Gse20 Ale20
    4. Check that the operation has stopped by referring to the intelligent tester display and tighten the bleeder plug (*8).

    5. Repeat (*7) and (*8) until all the air in the fluid is completely bled out.

    6. Using SST, tighten the bleeder plug completely.

      SST
      09023-00101
      Torque:
      11 N*m{110 kgf*cm, 8 ft.*lbf}
    7. For the rest of the wheels, bleed the air in the same way as stated in the above procedures.



  1. Bleed the air from the pressure reduction line according to "Step 3: Decrease" on the intelligent tester display.

    NOTICE:
    1. Bleed the pressure reduction line by following the steps displayed on the intelligent tester.
    2. Make sure that the master cylinder reservoir tank does not become empty of brake fluid.



      Lexus Is250, Is220D. Gse20 Ale20
    1. Connect a vinyl tube to either one of the bleeder plugs.

    2. Loosen the bleeder plug (*9).

    3. Using the intelligent tester, operate the brake actuator assembly, completely depress the brake pedal and hold it.

      NOTICE:
      1. The operation stops automatically after 4 seconds. When this operation will be repeated continuously, allow an interval of at least 20 seconds between each bleeding operation.
      2. When the operation is completed, the brake pedal will go down slightly. This is a normal phenomenon due to the opening of the solenoid.
      3. During this procedure, the brake pedal will seem heavy. It is necessary to completely depress it, so that brake fluid will come out of the bleeder plug.
      4. Be sure to keep the brake pedal depressed. Never depress and release the pedal repeatedly.


    4. Lexus Is250, Is220D. Gse20 Ale20
    5. Tighten the bleeder plug, then release the brake pedal (*10).

    6. Repeat steps (*9) to (*10) until all the air in the fluid is completely bled out.

    7. Using SST, tighten the bleeder plug completely.

      SST
      09023-00101
      Torque:
      11 N*m{110 kgf*cm, 8 ft.*lbf}
    8. Repeat the above procedures for the rest of the brakes to bleed the air from the brake line.



  1. Bleed the air from the brake line again according to "Step 4: Increase" on the intelligent tester display.

    NOTICE:
    1. Bleed the brake line by following the steps displayed on the intelligent tester.
    2. Make sure that the master cylinder reservoir tank does not become empty of brake fluid.



      Lexus Is250, Is220D. Gse20 Ale20
    1. Connect a vinyl tube to either one of the bleeder plugs.

    2. Depress the brake pedal several times, then loosen the bleeder plug connected to the vinyl tube with the pedal depressed (*11).



    3. Lexus Is250, Is220D. Gse20 Ale20
    4. When fluid no longer comes out, tighten the bleeder plug, then release the brake pedal (*12).

    5. Repeat (*11) and (*12) until all the air in the fluid is completely bled out.

    6. Using SST, tighten the bleeder plug completely.

      SST
      09023-00101
      Torque:
      11 N*m{110 kgf*cm, 8 ft.*lbf}
    7. Repeat the above procedures for each brake to bleed the air from the brake line.

  1. Finish "AIR BLEEDING" on the intelligent tester and turn off the power.

  1. Disconnect the intelligent tester from the DLC3.

  1. Turn the engine switch off.



12. INSPECT DTC
HINT:
(Click here).


13. INSPECT FLUID LEVEL IN RESERVOIR


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Check the fluid level.
    If brake fluid level is lowered, check for leakage and inspect the disc brake pad. If necessary, refill the reservoir with brake fluid after repair and replacement.

    Fluid:
    SAE J1703 or FMVSS No. 116 DOT 3


14. INSPECT FOR BRAKE FLUID LEAKAGE


15. INSTALL FRONT WHEEL
Torque:
103 N*m{1,050 kgf*cm, 76 ft.*lbf}


16. INSTALL COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Engage the 11 claws.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the cowl top ventilator louver sub-assembly with the 2 clips.



17. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY LH
  1. Operate the wiper, and stop the windshield wiper motor at the automatic stop position.



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Clean the wiper arm serrations.

  1. Clean the wiper pivot serrations with a wire brush (when reinstalling).



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the front wiper arm and blade assembly LH with the nut at the position as shown in the illustration.

    Torque:
    22 N*m{224 kgf*cm, 16 ft.*lbf}
    HINT:
    Hold the arm hinge by hand to fasten the nut.
    Area
    Measurement
    A
    15 to 30 mm (0.59 to 1.18 in.)
    B
    Approx. 40 mm (1.57 in.)


18. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY RH
  1. Operate the wiper, and stop the windshield wiper motor at the automatic stop position.



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Clean the wiper arm serrations.

  1. Clean the wiper pivot serrations with a wire brush (when reinstalling).



    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the front wiper arm and blade assembly RH with the nut at the position as shown in the illustration.

    Torque:
    22 N*m{224 kgf*cm, 16 ft.*lbf}
    HINT:
    Hold the arm hinge by hand to fasten the nut.
    Area
    Measurement
    A
    18.5 to 33.5 mm (0.73 to 1.32 in.)
    B
    Approx. 20 mm (0.79 in.)
  1. Operate the front wipers while spraying washer fluid on the windshield glass. Make sure that the front wipers function properly and there is no interference with the vehicle body.



19. INSTALL FRONT WIPER ARM HEAD CAP


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the front wiper arm head cap.

    HINT:
    Use the same procedures for the RH side and the LH side.


20. INSTALL FRONT UPPER FENDER PROTECTOR LH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Engage the claw and the 3 clips, then install the front upper fender protector LH.

  1. Engage the clip on the rubber portion of the cowl top ventilator louver sub-assembly to the front fender protector upper LH.



21. INSTALL FRONT UPPER FENDER PROTECTOR RH
HINT:
Use the same procedures for the RH side and the LH side.


22. INSTALL ENGINE ROOM SIDE COVER RH


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the side cover with the 2 clips.



23. INSTALL ENGINE ROOM SIDE COVER LH


    Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Brake Actuator  Installation
  1. Install the side cover with the 5 clips.



24. INSTALL COOL AIR INTAKE DUCT SEAL


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the intake duct seal with the 11 clips.



25. PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION
HINT:
(Click here)


26. INSPECT SENSOR SIGNAL
HINT:
(Click here)


27. INSPECT ACTUATOR WITH INTELLIGENT TESTER
HINT:
(Click here)