Brake Bleeding: Service and Repair
BRAKE: BRAKE FLUID (for 2GR-FSE): 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.
NOTICE:
* 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
(a) Add reservoir with brake fluid.
Fluid:
SAE J1703 or FMVSS No. 116 DOT3
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.
(a) Disconnect the 2 brake lines from the master cylinder.
(b) Slowly depress the brake pedal and hold it.
(c) Cover the 2 outer holes with fingers, and release the brake pedal.
(d) Repeat (b) and (c) 3 or 4 times.
(e) Using SST, connect the brake lines to the master cylinder.
SST : 09023-00101
Torque : 15 Nm (155 kgf-cm, 11 ft-lbf)
3. BLEED BRAKE LINE
NOTICE:
Bleed the air from the wheel furthest from the master cylinder.
(a) Connect the vinyl tube to the bleeder plug.
(b) Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed.
(c) When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.
(d) Repeat (b) and (c) until all the air in the fluid is completely bled out.
(e) Using SST, tighten the bleeder plug completely.
SST : 09023-00101
Torque : 11 Nm (112 kgf-cm, 8 ft-lbf)
(f) Repeat the above procedures for each wheel to bleed the air from the brake line.
4. BLEED ABS AND TRACTION ACTUATOR ASSEMBLY
NOTICE:
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 Techstream by following the procedures below.
(a) Depress the brake pedal more than 20 times with the engine switch off.
(b) Connect the Techstream to the DLC3, then turn the engine switch on (IG).
NOTICE:
Do not start the engine.
(c) Turn the Techstream on and select "AIR BLEEDING" on the screen.
NOTICE:
* Refer to the Techstream operator's manual for further details.
* Bleed the air by following the steps displayed on the Techstream.
(d) Bleed the air according to "Step 1: Increase" on the Techstream display.
NOTICE:
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.
(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 Nm (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.
(e) Bleed the air from the suction line according to "Step 2: Inhalation" on the Techstream display.
NOTICE:
* Bleed the suction line by following the steps displayed on the Techstream.
* 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 Techstream.
NOTICE:
* The operation stops automatically in 4 seconds.
* At this time, be sure to release the brake pedal.
(3) Check that the operation has stopped by referring to the Techstream 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 Nm (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.
(f) Bleed the air from the pressure reduction line according to "Step 3: Decrease" on the Techstream display.
NOTICE:
* Bleed the pressure reduction line by following the steps displayed on the Techstream.
* 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 Techstream, operate the ABS and TRACTION actuator assembly, completely depress the brake pedal and hold it.
NOTICE:
* 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.
(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 Nm (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.
(g) Bleed the air from the brake line again according to "Step 4: Increase" on the Techstream display.
NOTICE:
* Bleed the air by following the steps displayed on the Techstream.
* 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.
(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 Nm (112 kgf-cm, 8 ft-lbf)
(6) Repeat the above procedures for each brake to bleed the air from the brake line.
(h) Finish "AIR BLEEDING" on the Techstream and turn off the power.
(i) Disconnect the Techstream from the DLC3.
(j) Turn the engine switch off.
5. INSPECT FLUID LEVEL IN RESERVOIR
(a) 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.