Brake Fluid: Bleeding

HINT:

If any work is done on the brake system or if air in the brake lines is suspected, bleed the air from the system.
When bleeding, keep the amount of the fluid within the line of reservoir between Min. and Max.

NOTE:

Wash off brake fluid immediately if it comes in contact with any painted surface.
With the reservoir cap removed, when depressing the brake pedal, the fluid will spray.

FILL RESERVOIR WITH BRAKE FLUID
Fluid: SAE J1703 or FMVSS No. 116 DOT3
BLEED HYDRAULIC BRAKE BOOSTER (Using Intelligent Tester)
HINT:

If the hydraulic brake booster has been disassembled, disconnect the brake line from the hydraulic brake booster or if the reservoir becomes empty, bleed the hydraulic brake booster.
1. Turn the ignition switch OFF, and depress the brake pedal more than 40 times.
  HINT:
  
  When a pressure in power supply system is released, reaction force becomes light and stroke becomes longer.
2. Turn the ignition switch ON, and check that the pump stops after approximately 30 to 40 seconds.
3. If the pump does not stop, perform the 2 steps above.
4. With the ignition switch remained ON, depress the brake pedal more than 20 times.
5. Perform the "BLEED AIR FROM BRAKE LINE" procedures to bleed air from the right and left front brake cylinder.
6. Holding the brake pedal depressed, bleed the right and left rear brake cylinders.
  HINT:
  
  It is not necessary to depress the pedal continuously, as brake fluid flows out by firs depressing.
7. Connect intelligent tester.
  1. Turn the ignition switch OFF, and connect the intelligent tester (with CAN VIM) to the DLC3.
  2. Turn the ignition switch ON and select "AIR BLEEDING" on the intelligent tester.
    HINT:
    
    Please refer to the intelligent tester operator's manual for further details.
8. Bleed right front brake line.
  1. Select "FR LINE" on the intelligent tester.
  2. With "FR LINE" turned ON with the intelligent tester, depress the brake pedal and hold it to bleed the right front brake cylinder.
  3. Repeat the step above until there are no more air bubbles in the fluid.
    
    Fig 1: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Bleed left front brake line.
  1. Select "FL LINE" on the intelligent tester.
  2. With "FL LINE" turned ON with the intelligent tester, depress the brake pedal and hold it to bleed the left front brake cylinder.
  3. Repeat the step above until there are no more air bubbles in the fluid.
10. Bleed rear brake line.
  1. Select "RR LINE" on the intelligent tester.
  2. With "RR LINE" turned ON with the intelligent tester, bleed the left and right brake cylinder.
11. Disconnect the intelligent tester from the DLC3.
12. Clear the DTC (see DTC CHECK/CLEAR ).
BLEED HYDRAULIC BRAKE BOOSTER (Using ABS Actuator Checker)
HINT:

If the hydraulic brake booster has been disassembled, disconnect the brake line from the hydraulic brake booster or if the reservoir becomes empty, bleed the hydraulic brake booster.
1. Disconnect the 2 connectors from the hydraulic brake booster.
2. Connect the actuator checker (SST) to the hydraulic brake booster side wire harness via the sub-wire harness (SST), as shown in Fig 2 .
  SST 09990-00150, 09990-00480
  
  HINT:
  
  Connect the connector with the label of "AIR BLEED" attached to the connector of the actuator checker.
  
  Fig 2: Disconnecting Connectors From Hydraulic Brake Booster
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Connect the red cable of the checker to the battery positive (+) terminal and the black cable to the negative (-) terminal.
  
  Fig 3: Identifying Connector Connection
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Turn the ignition switch OFF, and depress the brake pedal more than 40 times.
  HINT:
  
  When a pressure in power supply system is released, reaction force becomes easy and stroke becomes longer.
5. Turn the ignition switch ON, and check that the pump stops after 30 to 40 seconds.
6. If the pump does not stop, perform the 2 steps above.
7. With the ignition switch remained ON, depress the brake pedal more than 20 times.
8. Perform the "BLEED AIR FROM BRAKE LINE" procedures to bleed air from the right and left front brake cylinders.
9. Holding the brake pedal depressed, bleed the right and left rear brake cylinders.
  HINT:
  
  It is not necessary to depress the pedal continuously, as brake fluid flows out by first depressing.
10. Bleed right front brake line.
  1. Turn the selector switch of the actuator check to the "FRONT RH" position.
  2. Push and hold in the MAIN push switch, depress the brake pedal and hold it to bleed the right front brake cylinder.
    NOTE: Do not keep the MAIN switch pushed in for more than 10 seconds. When operating it continuously, set the interval of more than 20 seconds.
  3. Repeat the step above until there are no more air bubbles in the fluid.
    
    Fig 4: Identifying MAIN Push Switch
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
11. Bleed left front brake line.
  1. Turn the selector switch of the actuator checker to the "FRONT LH" position.
  2. Push and hold in the MAIN push switch, depress the brake pedal and hold it to bleed the left front brake cylinder.
    NOTE: Do not keep the MAIN switch pushed in for more than 10 seconds. When operating it continuously, set the interval of more than 20 seconds.
  3. Repeat the step above until there are no more air bubbles in the fluid.
    
    Fig 5: Identifying SST MAIN Push Switch
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
12. Bleed right rear brake line.
  1. Push and hold in the "SUB LH" and "SUB RH" switches, bleed the right rear brake cylinder.
    NOTE: Do not keep the MAIN switch pushed in for more than 10 seconds. When operating it continuously, set the interval of more than 20 seconds.
  2. Repeat the step above until there are no more air bubbles in the fluid.
    
    Fig 6: Identifying SUB LH & SUB RH Switches
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
13. Observe the "BLEED RIGHT REAR BRAKE LINE" procedures and bleed left rear brake line.
14. Disconnect the actuator checker (SST) and sub-wire harness (SST) from the actuator.
  SST 09990-00150, 09990-00480
15. Connect the 2 connectors to the hydraulic brake booster.
16. Clear the DTC (see DTC CHECK/CLEAR ).
BLEED AIR FROM BRAKE LINE
1. Connect the vinyl tube to the brake cylinder.
2. Depress the brake pedal several times, then loosen the bleeder plug with the pedal held down.
3. At the point when fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
4. Repeat the 2 steps above until all the air in the fluid has been bled out.
5. Repeat the above procedures to bleed the brake line for each wheel.
  Torque: 11 N.m (110 kgf.cm, 8 ft. lb.)
  
  Fig 7: Connecting Vinyl Tube To Brake Cylinder
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK BRAKE FLUID LEVEL IN RESERVOIR
1. With the ignition switch OFF, depress the brake pedal more than 40 times.
  HINT:
  
  When a pressure in power supply system is released, reaction force becomes light and stroke becomes longer.
2. Remove the reservoir cap. Add brake fluid up to the "MAX" line.
  Fluid: SAE J1703 or FMVSS No. 116 DOT3