BRAKE FLUID BLEEDING

CAUTION / NOTICE / HINT

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 MAX and MIN lines 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 assembly and brake master cylinder reservoir assembly) is higher than the fluid level and air enters the hose.

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

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

  • 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 on any painted vehicle body surface. If brake fluid leaks onto any painted surface, immediately wash 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

PROCEDURE


  1. BLEED BRAKE LINE


    1. Fill the reservoir with brake fluid.


      1. A01KSJT

        Remove the brake master cylinder reservoir filler cap assembly.

      2. Add brake fluid to the reservoir until the fluid level is between the MAX and MIN lines on the brake fluid reservoir.

        Brake Fluid
        SAE J1703 or FMVSS No. 116 DOT3 or SAE J1704 or FMVSS No. 116 DOT4

    2. Bleed the brake line.


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

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


        Chassis > ABS/VSC/TRC > Utility
        Tester Display
        Air Bleeding

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

      4. After air bleeding, tighten each bleeder plug.

        Torque:
        Front Bleeder Plug (for 15 inch Front Brake)
        12 N*m  { 122 kgf*cm, 9 ft.*lbf }
        Front Bleeder Plug (for 16 inch Front Brake)
        8.3 N*m  { 85 kgf*cm, 73 in.*lbf }
        Rear Bleeder Plug
        11 N*m  { 112 kgf*cm, 8 ft.*lbf }

      5. Clear the DTCs.

        Click here

      6. 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.

  2. BLEED BRAKE SYSTEM


    1. A01KT26

      Wait for 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. Fill the reservoir with brake fluid.


      1. A01KSJT

        Remove the brake master cylinder reservoir filler cap assembly.

      2. Add brake fluid to the reservoir until the fluid level is between the MAX and MIN lines on the brake fluid reservoir.

        Brake Fluid
        SAE J1703 or FMVSS No. 116 DOT3 or SAE J1704 or FMVSS No. 116 DOT4

    3. Remove the outer cowl top panel.

      for LHD: Click here

      for RHD: Click here

    4. Bleed the brake system.


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

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


        Chassis > ABS/VSC/TRC > Utility
        Tester Display
        Air Bleeding

      3. Select "ABS actuator has been replaced", and bleed air from 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.

      4. A01KTY2C03
        *a Stroke Simulator Bleeder Plug

        After air bleeding, tighten each bleeder plug.

        Torque:
        Front Bleeder Plug (for 15 inch Front Brake)
        12 N*m  { 122 kgf*cm, 9 ft.*lbf }
        Front Bleeder Plug (for 16 inch Front Brake)
        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.

      5. Clear the DTCs.

        Click here

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

    5. Install the brake master cylinder reservoir filler cap.

    6. Inspect for brake fluid leaks.

    7. Install the outer cowl top panel.

      for LHD: Click here

      for RHD: Click here