BRAKE FLUID BLEEDING

CAUTION:

The intelligent tester 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


  • The brake fluid level must always be adjusted to the MAX line.

  • Perform air bleeding with the shift lever in P and the parking brake applied.

  • As brake fluid may overflow when bleeding air, 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 No. 2 brake actuator hose of the brake fluid reservoir (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 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.

  • 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 listed below.

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

  1. BLEED BRAKE LINE


    1. Bleed brake line.


      1. A01NMWF

        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 intelligent tester to the DLC3 and turn the power switch on (IG).

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

      5. Select the "Usual air bleeding / All Line" and bleed brake line according to the intelligent tester display.

      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  { 110 kgf*cm, 8 ft.*lbf }
    2. Clear the DTCs Click here.

    3. Turn the intelligent tester off and turn the power switch off.

    4. Inspect for brake fluid leaks.

    5. Adjust the brake fluid level in the reservoir Click here.

  2. BLEED BRAKE SYSTEM


    1. Bleed brake system.


      1. A01NJCZ

        With the power switch off, disconnect the 2 brake booster pump connectors.

        Tech Tips

        This procedure is not required if the brake booster pump connectors have been disconnected.

      2. Connect the intelligent tester to the DLC3 with the power switch off.

      3. A01NMWF

        Remove the brake master cylinder reservoir filler cap assembly.

      4. A01NMFPE01
        Text in Illustration
        *1 MIN Line

        Drain the brake fluid in the reservoir tank near the MIN line.

      5. Connect the intelligent tester to the DLC3 with the power switch off.

      6. Turn the power switch on (IG).

      7. Turn the intelligent tester on and enter the following menus: Chassis / ABS/VSC/TRC / Utility / ECB (Electronically Controlled Brake system) Utility / Zero Down.

        Tech Tips

        Using the intelligent tester to perform accumulator zero down causes the pressurized fluid in the accumulator to be returned to the brake fluid reservoir.

      8. When the buzzer sounds, turn the power switch off.

      9. 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
      10. Turn the power switch on (IG).

      11. Enter the following menus: Chassis / ABS/VSC/TRC / Utility / Air Bleeding.

      12. Select the "Actuator has been removed" and bleed brake system according to the intelligent tester display.

      13. 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  { 110 kgf*cm, 8 ft.*lbf }
    2. Clear the DTCs Click here.

    3. Turn the intelligent tester off and turn the power switch off.

    4. Inspect for brake fluid leaks.

    5. Adjust the brake fluid level in the reservoir Click here.

  3. BLEED BRAKE MASTER CYLINDER


    1. Bleed brake master cylinder.


      1. A01NMWF

        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 intelligent tester to the DLC3 and turn the power switch on (IG).

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

      5. Select the "Master Cylinder or Stroke Simulator has been removed" and bleed brake master cylinder according to the intelligent tester display.

      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  { 110 kgf*cm, 8 ft.*lbf }
    2. Clear the DTCs Click here.

    3. Turn the intelligent tester off and turn the power switch off.

    4. Inspect for brake fluid leaks.

    5. Adjust the brake fluid level in the reservoir Click here.