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BRAKE FLUID (w/ VSC): Bleeding

HINT:

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.

NOTE:
  • Move the shift lever to the P position and apply the parking brake before bleeding the brakes.
  • Add brake fluid to keep the level between MIN and MAX lines of the reservoir while bleeding the brakes.
  • If brake fluid leaks onto any painted surface, wash or otherwise remove it completely.
  1. ADD RESERVOIR WITH BRAKE FLUID 
    1. Add reservoir with brake fluid.

      Fluid: 

      SAE J1703 or FMVSS No. 116 DOT3 

      Fig 1: Filling Reservoir With Brake Fluid
      G04025277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. BLEED MASTER CYLINDER 

    HINT:

    • If the master cylinder is reinstall or if the reservoir becomes empty, bleed the air from the master cylinder.
    • To avoid brake fluid from adhering, cover the painted surface with a shop rag or peace of cloth.
    1. Disconnect the 2 brake lines from the master cylinder.
    2. Slowly depress the brake pedal and hold it.
      Fig 2: Depressing Brake Pedal
      G04025278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Cover the 2 outer holes with fingers, and release the brake pedal.
    4. Repeat (b) and (c) 3 or 4 times.
    5. Using SST, connect the brake lines to the master cylinder.

      SST 09023-00101 

      Torque: 15 N*m (155 kgf*cm, 11 ft.*lbf) 

      Fig 3: Releasing Brake Pedal
      G04025279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. BLEED BRAKE LINE 
    NOTE: Bleed the air from the wheel furthest from the master cylinder.
    1. Connect the vinyl tube to the bleeder plug.
    2. Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed.
      Fig 4: Connecting Vinyl Tube To Bleeder Plug
      G04025280Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
    4. Repeat (b) and (c) until all the air in the fluid is completely bled out.
    5. Using SST, tighten the bleeder plug completely.

      SST 09023-00101 

      Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

    6. Repeat the above procedures for each wheel to bleed the air from the brake line.
      Fig 5: Tightening Bleeder Plug
      G04025281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. BLEED ABS AND TRACTION ACTUATOR ASSEMBLY 
    NOTE: After bleeding the air from the brake system, if the height or feel of the brake pedal cannot be obtained, bleed the air from the ABS and TRACTION actuator assembly with the intelligent tester by following the procedures below.
    1. Depress the brake pedal more than 20 times with the engine switch off.
    2. Connect the intelligent tester to the DLC3, then turn the engine switch on (IG).
      NOTE: Do not start the engine.
      Fig 6: Connecting Intelligent Tester To DLC3
      G04025282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the intelligent tester power on and select "AIR BLEEDING" on the screen.
      NOTE:
      • Refer to the intelligent tester operator's manual for further details.
      • Bleed the air by following the steps displayed on the intelligent tester.
    4. Bleed the air according to "Step 1: Increase" on the intelligent tester display.
      NOTE: Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect the vinyl tube to either one of the bleeder plugs.
      2. Depress the brake pedal several times, then loosen the bleeder plug connected to the vinyl tube with the pedal depressed.
        Fig 7: Depressing Brake Pedal
        G04025283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
      4. Repeat (2) and (3) until all the air in the fluid is completely bled out.
      5. Using SST, tighten the bleeder plug completely.

        SST 09023-00101 

        Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

      6. Repeat the above procedures for the rest of the wheels to bleed the air from the brake line.
        Fig 8: Tightening Bleeder Plug
        G04025284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Bleed the air from the suction line according to "Step 2: Inhalation" on the intelligent tester display.
      NOTE:
      • Bleed the suction line by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect the vinyl tube to the bleeder plug at the right front wheel or the right rear wheel and loosen the bleeder plug.
      2. Operate the ABS and TRACTION actuator assembly to bleed the air using the intelligent tester.
        NOTE:
        • The operation stops automatically in 4 seconds.
        • At this time, be sure to release the brake pedal.
          Fig 9: Connecting Vinyl Tube To Bleeder Plug
          G04025285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Check that the operation has stopped by referring to the intelligent tester display and tighten the bleeder plug.
      4. Repeat (2) and (3) until all the air in the fluid is completely bled out.
      5. Using SST, tighten the bleeder plug completely.

        SST 09023-00101 

        Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

      6. For the rest of the wheels, bleed the air in the same way as stated in the above procedures.
        Fig 10: Tightening Bleeder Plug
        G04025286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Bleed the air from the pressure reduction line according to "Step 3: Decrease" on the intelligent tester display.
      NOTE:
      • Bleed the pressure reduction line by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect a vinyl tube to either one of the bleeder plugs.
      2. Loosen the bleeder plug.
      3. Using the intelligent tester, operate the ABS and TRACTION actuator assembly, completely depress the brake pedal and hold it.
        NOTE:
        • The operation stops automatically in 4 seconds. When performing this procedure continuously, an interval of at least 20 seconds is required.
        • When the operation is completed, the brake pedal slightly goes down. This is a normal phenomenon when the solenoid opens.
        • During this procedure, the pedal seems heavy, but completely depress it so that the brake fluid comes out from the bleeder plug.
        • Be sure to keep the brake pedal depressed. Never depress and release the pedal repeatedly.
          Fig 11: Loosening Bleeder Plug
          G04025287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Tighten the bleeder plug, then release the brake pedal.
      5. Repeat steps "2" to "4" until all the air in the fluid is completely bled out.
      6. Using SST, tighten the bleeder plug completely.

        SST 09023-00101 

        Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

      7. Repeat the above procedures for the rest of the brakes to bleed the air from the brake line.
        Fig 12: Bleeding Brakes
        G04047744Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Bleed the air from the brake line again according to "Step 4: Increase" on the intelligent tester display.
      NOTE:
      • Bleed the air by following the steps displayed on the intelligent tester.
      • Make sure that the master cylinder reservoir tank does not become empty of brake fluid.
      1. Connect a vinyl tube to either one of the bleeder plugs.
      2. Depress the brake pedal several times, then loosen the bleeder plug connected to the vinyl tube with the pedal depressed.
        Fig 13: Depressing Brake Pedal
        G04025289Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
      4. Repeat (2) and (3) until all the air in the fluid is completely bled out.
      5. Using SST, tighten the bleeder plug completely.

        SST 09023-00101 

        Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

      6. Repeat the above procedures for each brake to bleed the air from the brake line.
        Fig 14: Tightening Bleeder Plug
        G04025290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Finish "AIR BLEEDING" on the intelligent tester and turn off the power.
    9. Disconnect the intelligent tester from the DLC3.
    10. Turn the engine switch off.
  5. INSPECT FLUID LEVEL IN RESERVOIR 
    1. Check the fluid level and add fluid if necessary.

      Fluid: 

      SAE J1703 or FMVSS No. 116 DOT3 

      If fluid leaks, tighten or replace the leaking part.

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