BRAKE FLUID BLEEDING

CAUTION:

The GTS must be used for air bleeding. If not used, the air bleeding will be incomplete, which is hazardous and may lead to an accident.

Note


  • Perform air bleeding with park (P) selected and the parking brake applied.

  • As brake fluid may overflow when bleeding, do not place the fluid can on the reservoir filler opening.

  • Perform air bleeding while maintaining the brake fluid level between the MIN/MAX level on the brake fluid reservoir.

  • Air bleeding will be difficult if the following occurs:


    1. The brake actuator hose (the hose between the brake booster pump and brake fluid reservoir) is lowered into the fluid and air enters the hose.

    2. During the air bleeding procedure, air enters the brake booster pump while operating the pump motor.

  • While performing air bleeding, the accumulator pressure drop may cause a buzzer to sound. As there is no problem, continue with the operation.

  • During air bleeding, DTCs for pressure sensor malfunctions, etc. may be stored. After air bleeding and if instructed in the procedures, clear the DTCs.

  • Release the parking brake while the linear valve offset calibration procedure.

  • Do not allow brake fluid to adhere to any painted surface such as the vehicle body. If brake fluid leaks onto any painted surface, immediately clean it off.

  • When bleeding air, select the suitable procedure according to the table below.

    Replaced/Installed Item Work Procedure
    Flexible hose (front/rear) Bleed brake line
    Disc brake cylinder assembly (front/rear)
    Brake booster pump assembly Bleed brake system
    Brake booster with master cylinder assembly
    Brake master cylinder reservoir assembly

  1. BLEED BRAKE LINE


    1. A003ZZU

      Disengage the 3 claws and 3 guides, and remove the center cowl top ventilator cover.

    2. Bleed brake line.


      1. A0043HU

        Remove the brake master cylinder reservoir filler cap assembly.

      2. Add brake fluid into the reservoir between MAX and MIN level on the brake fluid reservoir.

        Brake fluid
        SAE J1703 or FMVSS No. 116 DOT3

      3. Connect the GTS to the DLC3 and turn the power switch on (IG).

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

      5. Select "Usual air bleeding" on the GTS display, and bleed air from the brake fluid following the instructions on the GTS.

      6. After air bleeding, tighten each bleeder plug.

        Torque:
        front bleeder plug
        8.3 N*m  { 85 kgf*cm, 73 in.*lbf }
        rear bleeder plug
        11 N*m  { 112 kgf*cm, 8 ft.*lbf }

      7. Clear the DTCs Click here.

      8. Turn the GTS off and turn the power switch off.

    3. Inspect for brake fluid leaks.

    4. Install the brake master cylinder reservoir filler cap.

    5. Engage the 3 claws and 3 guides to install the center cowl top ventilator cover.

  2. BLEED BRAKE SYSTEM


    1. Remove the outer cowl top panel sub-assembly.


    2. Bleed the brake system.


      1. A00449B

        Wait at least 2 minutes with the power switch off, and disconnect the reservoir level switch connector.

        Note

        Do not depress the brake pedal or open/close the doors until the reservoir level switch connector is disconnected.

        Tech Tips

        This procedure is not required if the reservoir level switch connector has been disconnected.

      2. A0043HU

        Remove the brake master cylinder reservoir filler cap assembly.

      3. Add brake fluid into the reservoir between MAX and MIN level on the brake fluid reservoir.

        Brake fluid
        SAE J1703 or FMVSS No. 116 DOT3

      4. Connect the GTS to the DLC3 and turn the power switch on (IG).

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

      6. Select "ABS actuator has been replaced" on the GTS display, and bleed air from the brake fluid following the instructions on the GTS.

        Note

        Before following the instructions on the GTS to perform linear valve offset calibration, release the parking brake. When calibration is complete, immediately apply the parking brake.

      7. A0041R2E01
        Text in Illustration
        *1 Stroke Simulator Bleeder Plug

        After air bleeding, tighten each bleeder plug.

        Torque:
        front bleeder plug
        8.3 N*m  { 85 kgf*cm, 73 in.*lbf }
        rear bleeder plug
        11 N*m  { 112 kgf*cm, 8 ft.*lbf }
        stroke simulator bleeder plug
        8.5 N*m  { 87 kgf*cm, 75 in.*lbf }

        Tech Tips

        The stroke simulator bleeder plug is positioned as shown in the illustration.

      8. Clear the DTCs Click here.

      9. Turn the GTS off and turn the power switch off.

    3. Install the brake master cylinder reservoir filler cap.

    4. Inspect for brake fluid leaks.

    5. Install the outer cowl top panel sub-assembly.