BRAKE FLUID BLEEDING

Note


  • Move the shift lever to P and apply the parking brake before bleeding the brakes.

  • Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while bleeding the brakes.

  • If brake fluid leaks onto any painted surface, immediately wash it off.

  • Do not operate the brake actuator assembly while air is in the brake system or in the brake master cylinder sub-assembly. Doing so may cause air to enter the brake actuator assembly.

  • If bleeding the brake actuator assembly is difficult due to air in the brake actuator assembly, replace it with a new one.

  • If bleeding is performed with the engine running or the engine switch on (IG), DTC C1441 will be stored. Make sure to clear the DTCs when work is complete.

Tech Tips

If any work is performed on the brake system or if air in the brake lines is suspected, bleed the air from the brake system.


  1. FILL RESERVOIR WITH BRAKE FLUID


    1. A01G8Y4

      Remove the brake master cylinder reservoir filler cap.

    2. Fill the reservoir with brake fluid.

      Brake Fluid
      SAE J1703 or FMVSS No. 116 DOT 3

      Note


      • Make sure that there is sufficient brake fluid in the reservoir.

      • Do not remove the filter from the brake master cylinder reservoir and be sure to fill with new brake fluid to avoid any potential contamination of the brake system. Contamination, for example by dirt particles or mineral oil, could lead to functional brake problem.

  2. BLEED BRAKE MASTER CYLINDER

    Note


    • To prevent brake fluid from damaging painted surfaces, cover any surrounding parts with a piece of cloth.

    • Be sure to clean your hands before bleeding from master cylinder to avoid any potential contamination of the brake system. Contamination, for example by dirt particles or mineral oil, could lead to functional brake problem.

    Tech Tips

    If the brake master cylinder sub-assembly is reinstalled or runs out of brake fluid, bleed the brake master cylinder sub-assembly.


    1. A01G585

      Using a union nut wrench, disconnect the 2 brake lines from the brake master cylinder sub-assembly.

    2. A01G92G

      Slowly depress the brake pedal and hold it.*1

    3. A01G7BF

      Cover the 2 outer holes with fingers, and release the brake pedal.*2

    4. Repeat steps *1 and *2, 3 or 4 times.

    5. A01G585

      Using a union nut wrench, connect the 2 brake lines to the brake master cylinder sub-assembly.

      Torque:
      20 N*m  { 199 kgf*cm, 14 ft.*lbf }

      Note


      • Do not bend or damage the brake lines.

      • Do not allow brake lines to twist or interfere with other parts or the vehicle body during tightening.

      • Do not allow any foreign matter such as dirt or dust to enter the brake lines.

      • Use the formula to calculate special torque values for situations where the union nut wrench is combined with a torque wrench Click here.

  3. BLEED BRAKE LINE

    Note


    • Bleed the brake line of the wheel farthest from the master cylinder first.

    • Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while bleeding the brake lines.


    1. Connect a vinyl tube to the bleeder plug.

    2. Depress the brake pedal several times, and then loosen the bleeder plug with the brake pedal depressed.*1

    3. When fluid stops coming out, tighten the bleeder plug, and release the brake pedal.*2

    4. Repeat steps *1 and *2 until all the air in the brake fluid is completely bled out and a new brake fluid comes out.

    5. Tighten the bleeder plug completely.

      Torque:
      8.3 N*m  { 85 kgf*cm, 73 in.*lbf }

    6. Repeat the above steps to replace the brake fluid of the brake lines for each wheel.

  4. BLEED BRAKE ACTUATOR

    Note

    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 using the GTS by following the procedure below.


    1. Depress the brake pedal more than 20 times with the engine switch off.

    2. Connect the GTS to the DLC3, then turn the engine switch on (IG).

      Note

      Do not start the engine.

    3. Turn the GTS on and enter the following menus: Chassis / ABS/VSC/TRC / Utility / Air Bleeding.

    4. Bleed brake actuator by following the instructions on the GTS.

    5. After air bleeding, tighten each bleeder plug.

      Torque:
      8.3 N*m  { 85 kgf*cm, 73 in.*lbf }

    6. Turn the GTS off and disconnect the GTS from the DLC3.

    7. Turn the engine switch off.

  5. INSPECT FOR BRAKE FLUID LEAK

  6. INSPECT BRAKE FLUID LEVEL IN RESERVOIR


    1. A01G4U2E01
      Text in Illustration
      *a MAX Line
      *b MIN Line

      Check the fluid level.

      If brake fluid level is lower than the MIN line, check for leaks and inspect the disc brake pads. If necessary, refill the reservoir with brake fluid to the MAX line after repair or replacement.

      Brake Fluid
      SAE J1703 or FMVSS No. 116 DOT 3

      Note

      If using a dropper to adjust the fluid amount, make sure that the dropper has not been used with mineral oils, water or deteriorated brake fluid. Sealed areas may deteriorate and lead to fluid leaks, or the fluid may deteriorate and lead to decreased efficiency.

  7. CHECK AND CLEAR DTCS

    Click here