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 MIN and MAX 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 before performing 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. Remove the center No. 1 cowl top ventilator louver.

      1. C308441N01

        Slide the hood to cowl top seal and detach the 2 claws (A).

      2. Detach the 2 claws (B) and 3 guides, and remove the center No. 1 cowl top ventilator louver.

    2. Bleed brake line.

      1. Remove the brake master cylinder reservoir filler cap assembly.

      2. Add brake fluid to keep the level between the MIN and MAX lines of the reservoir.

        Brake fluid

        SAE J1703 or FMVSS No. 116 DOT 3

        Note:

        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 problems.

      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 / Utility / Air Bleeding.

        Chassis > ABS/VSC/TRC > Utility

        Tester Display

        Air Bleeding

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

      6. After air bleeding, tighten each bleeder plug.

        8.3 N*m

        85 kgf*cm

        73 in.*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. Install the center No. 1 cowl top ventilator louver.

      1. C308441N01

        Attach the 2 claws (B) and 3 guides to install the center No. 1 cowl top ventilator louver.

      2. Slide the hood to cowl top seal to attach the 2 claws (A).

  2. BLEED BRAKE SYSTEM

    1. C308441N01

      Remove the center No. 1 cowl top ventilator louver.

      1. Slide the hood to cowl top seal and detach the 2 claws (A).

      2. Detach the 2 claws (B) and 3 guides, and remove the center No. 1 cowl top ventilator louver.

    2. Bleed the brake system.

      1. C308442

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

        Tip:

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

        Note:

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

      2. Remove the brake master cylinder reservoir filler cap assembly.

      3. Add brake fluid to keep the level between the MIN and MAX lines of the reservoir.

        Brake fluid

        SAE J1703 or FMVSS No. 116 DOT 3

        Note:

        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 problems.

      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 / Utility / Air Bleeding.

        Chassis > ABS/VSC/TRC > Utility

        Tester Display

        Air Bleeding

      6. 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.

      7. C263550C01

        *1

        Stroke Simulator Bleeder Plug

        After air bleeding, tighten each bleeder plug.

        Front bleeder plug

        8.3 N*m

        85 kgf*cm

        73 in.*lbf

        Rear bleeder plug

        8.3 N*m

        85 kgf*cm

        73 in.*lbf

        Stroke simulator bleeder plug

        8.5 N*m

        87 kgf*cm

        75 in.*lbf

        Tip:

        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. C308441N01

      Install the center No. 1 cowl top ventilator louver.

      1. Attach the 2 claws (B) and 3 guides to install the center No. 1 cowl top ventilator louver.

      2. Slide the hood to cowl top seal to attach the 2 claws (A).