Brake Bleeding: Service and Repair

BRAKE: BRAKE FLUID: BLEEDING

BLEEDING
HINT:
- If any work is performed on the brake system or if air in the brake lines is suspected, bleed air from the brake system.
- When bleeding air, keep the amount of brake fluid between the reservoir's MIN and MAX lines.
NOTICE:
- Wash off brake fluid immediately if it comes in contact with any painted surface.
- When depressing the brake pedal with the reservoir cap removed, fluid will spray.

1. FILL RESERVOIR WITH BRAKE FLUID
Fluid:
SAE J1703 or FMVSS NO. 116 DOT3
2. BLEED BRAKE BOOSTER W/ACCUMULATOR PUMP ASSEMBLY
NOTE:
If the brake master cylinder is disassembled, the brake line is disconnected from the brake master cylinder or if the reservoir becomes empty, bleed the brake master cylinder.

(a) Turn the ignition switch to ON, and wait until the pump motor has stopped (step A).
HINT: Pump operating sound can be heard.

(b) Turn the ignition switch to OFF, and depress the brake pedal more than 20 times (step B).
HINT: When pressure in the accumulator is released, the reaction force becomes lighter and the stroke becomes longer.

(c) Repeat step A and B 5 times (step C).
(d) Turn the ignition switch to ON, and check that the pump stops after approximately 8 to 14 seconds.
NOTE:
If the pump does not stop, repeat step C again.

3. BLEED AIR FROM BRAKE LINE
(a) Remove the bleeder plug cap.





(b) Connect a vinyl tube to the bleeder plug.
(c) Depress the brake pedal several times, and then loosen the bleeder plug with the brake pedal held down.
(d) When fluid stops coming out, immediately tighten the bleeder plug. Then release the brake pedal.
(e) Repeat the previous 2 steps until all the air in the fluid is gone.
(f) Tighten the bleeder plug.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
(g) Install the bleeder plug cap.
(h) Repeat the steps above to bleed the air out of the brake line for each wheel.
4. BLEED AIR FROM HYDRAULIC BRAKE MASTER CYLINDER (When using Techstream)
HINT: If the brake master cylinder is disassembled, the brake line is disconnected from the brake master cylinder or if the reservoir become empty, bleed the brake master cylinder.

(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Select "Active Test" mode on the Techstream.
(d) Connect the vinyl tube to the rear wheel cylinder.
(e) Loosen the bleeder plug.
(f) Select "TRAC Solenoid (SRMR) and TRAC Solenoid (SRMF)" to drive the solenoids and bleed air from the rear wheel cylinder (step F).
NOTICE:
- Do not depress the brake pedal.
- Keep brake fluid in the reservoir tank above the MIN line during the above procedures.
HINT:
- Brake fluid is sent through the pump.
- To protect the solenoids, the Techstream turns OFF automatically 2 seconds after every solenoid has been turned ON.

(g) Repeat step F until all the air in the brake fluid is bled out.
(h) When the air is completely bled out of the brake fluid through the bleeder plug, tighten the bleeder plug.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
(i) Repeat the above procedures to bleed the other brake line (LH or RH).
(j) Turn the ignition switch to OFF.
(k) Turn the ignition switch to ON.
(l) Clear DTC Reading and Clearing Diagnostic Trouble Codes.
5. BLEED AIR FROM HYDRAULIC BRAKE MASTER CYLINDER (When using ABS actuator checker (SST))
HINT: If the hydraulic brake master cylinder has been disassembled, disconnect the brake line from the hydraulic brake master cylinder; or if the reservoir becomes empty, bleed air from the hydraulic brake master cylinder.





(a) Disconnect the 2 connectors from the hydraulic brake master cylinder.
(b) Connect the actuator checker (SST) to the hydraulic brake master cylinder side wire harness via the sub-wire harness S (SST), as shown in the illustration.
SST: 09990-00150
SST: 09990-00480




HINT: Connect the connector with the label "AIR BLEED" attached to the connector of the actuator checker.

(c) Connect the red cable of the actuator checker to the positive (+) battery terminal and the black cable to the negative (-) battery terminal.
(d) Turn the ignition switch OFF, and then depress the brake pedal more than 40 times.
HINT: When the power supply system's pressure is released, the brake pedal resistance decreases.

(e) Turn the ignition switch ON, and then check that the pump stops after approximately 30 to 40 seconds.
NOTE:
If the pump does not stop, repeat the previous 2 steps again.

(f) With the ignition switch still ON, depress the brake pedal more than 20 times.
(g) Bleed air from the right and left front brake cylinders using the "BLEED AIR FROM BRAKE LINE" procedures.
(h) While depressing and holding the brake pedal, bleed air from the right and left rear brake cylinders.
HINT: It is necessary to depress the brake pedal several times. Depressing and holding the brake pedal will cause the fluid to flow continuously.

(i) Bleed air from the right front brake line.




(1) Turn the selector switch of the actuator checker to the "FRONT RH" position.
(2) Push and hold the MAIN switch. Then depress and hold the brake pedal to bleed air from the right front brake cylinder.
NOTE:
Do not keep the MAIN switch pushed for more than 10 seconds. When operating it consecutively, wait 20 seconds between each operation.
(3) Repeat the previous step until there are no air bubbles in the fluid.
(j) Bleed air from the left front brake line.




(1) Turn the selector switch of the actuator checker to the "FRONT LH" position.
(2) Push and hold the MAIN switch. Then depress and hold the brake pedal to bleed air from the left front brake cylinder.
NOTE:
Do not keep the MAIN switch pushed for more than 10 seconds. When operating it consecutively, wait 20 seconds between each operation.
(3) Repeat the previous step until there are no air bubbles in the fluid.
(k) Bleed air from the right rear brake line.




(1) Push and hold the "SUB LH" and "SUB RH" switches. Then bleed air from the right rear brake cylinder.
NOTE:
Do not keep the MAIN switch pushed for more than 10 seconds. When operating it consecutively, wait 20 seconds between each operation.
(2) Repeat the previous step until there are no air bubbles in the fluid.
(l) Use the same procedures described above to bleed air from the left rear brake line.
(m) Disconnect the actuator checker (SST) and sub-wire harness (SST) from the actuator.
SST: 09990-00150
SST: 09990-00480
(n) Connect the 2 connectors to the hydraulic brake master cylinder.
(o) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.
6. CHECK BRAKE FLUID LEVEL IN RESERVOIR
(a) With the ignition switch OFF, depress the brake pedal more than 40 times.
HINT: When the power supply system's pressure is released, the brake pedal resistance decreases.

(b) Remove the reservoir cap. Add brake fluid up to the MAX line.
Fluid:
SAE J1703 or FMVSS NO. 116 DOT3