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Brake Bleeding: Service and Repair








BRAKE FLUID: REPLACEMENT

REPLACEMENT

NOTICE:
- Perform fluid replacement with the parking brake applied.
- Perform fluid replacement while maintaining the brake fluid level between the MIN/MAX level on the brake fluid reservoir.
- Do not allow brake fluid to contact the vehicle's paint surfaces. If contact occurs, clean it off immediately.

1. REPLACE BRAKE FLUID OF FRONT BRAKE SYSTEM





(a) Connect a vinyl tube to the bleeder plug of the front disc brake caliper.
(b) Depress the brake pedal several times and loosen the bleeder plug. With the brake pedal depressed, bleed fluid from the front disc brake caliper RH and LH.

NOTE: Add fluid to the brake fluid reservoir as necessary so that the fluid does not decrease below the MIN level.





(c) After bleeding the fluid, tighten the bleeder plug and release the brake pedal.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
2. REPLACE BRAKE FLUID OF REAR BRAKE SYSTEM





(a) Connect a vinyl tube to the bleeder plug of the rear disc brake cylinder.
(b) Depress the brake pedal several times and loosen the bleeder plug. With the brake pedal depressed, bleed fluid from the rear disc brake caliper RH and LH.

NOTE: Add fluid to the brake fluid reservoir as necessary so that the fluid does not decrease below the MIN level.





(c) After bleeding the fluid, tighten the bleeder plug and release the brake pedal.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
3. CHECK AND ADJUST BRAKE FLUID LEVEL IN RESERVOIR





(a) Check the fluid level and add fluid if necessary.
Fluid:
SAE J1703 or FMVSS No. 116 DOT3

HINT: Add fluid to a level between the reservoir's MIN and MAX lines.

4. CLEAR DTC
(a) Clear the DTCs (Reading and Clearing Diagnostic Trouble Codes).
5. CHECK AND BLEED BRAKE SYSTEM
(a) If the following malfunction symptoms occur, air may have entered the brake fluid line. Perform the following air bleed procedures.

- Low pedal or spongy pedal.
- Brake pedal is depressed firmly but braking is insufficient.

6. FILL RESERVOIR WITH BRAKE FLUID





(a) Set the brake fluid can upside down on the reservoir.
Fluid:
SAE J1703 or FMVSS No. 116 DOT3

- Make sure there is sufficient brake fluid in the can.
- After adding brake fluid, make sure the reservoir is sufficiently full.

7. BLEED AIR FROM BRAKE MASTER CYLINDER

HINT: If the master cylinder has been disassembled or if the reservoir becomes empty, bleed air from the master cylinder.





(a) Using a union nut wrench, disconnect the 2 brake lines from the master cylinder.
(b) Slowly depress and hold the brake pedal.





(c) Block the outer holes with your fingers, and release the pedal.
(d) Repeat the 2 previous steps 3 or 4 times.
(e) Using a union nut wrench, connect the 2 brake lines to the master cylinder.
without union nut wrench - Torque: 20 Nm (199 kgf-cm, 14 ft-lbf)
with union nut wrench - Torque: 18 Nm (185 kgf-cm, 13 ft-lbf)

HINT:
- Use a torque wrench with a fulcrum length of 300 mm (11.8 in.).
- The torque value for use with a union nut wrench is effective when the union nut wrench is parallel to the torque wrench.

8. BLEED AIR FROM BRAKE LINE





(a) Remove the bleeder plug cap.
(b) Connect the vinyl tube to the bleeder plug.
(c) Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.
(d) When fluid stops coming out, immediately tighten the bleeder plug. Then release the pedal.
(e) Repeat the 2 previous steps until all the air in the brake fluid is gone.
(f) Tighten the bleeder plug.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
(g) Install the cap.
(h) Bleed air from the brake line for each wheel by repeating the above procedures.
9. BLEED AIR FROM VSC ACTUATOR ASSEMBLY

NOTE: After bleeding the air from the brake system, if the height or feel of the brake pedal cannot be obtained, perform air bleeding of the brake actuator with the Techstream by following the procedure below.

(a) Depress the brake pedal more than 20 times with the engine off.
(b) Connect the Techstream to the DLC3, and turn the ignition switch ON.

NOTE: Do not start the engine.

(c) Select AIR BLEEDING on the Techstream.

HINT: Refer to the Techstream operator's manual for further details.

(d) Bleed the air out of the suction line.

NOTICE:
- Perform the bleeding at the right front wheel and right rear wheel.
- Bleed the air by following the steps displayed on the Techstream.

(1) Connect a vinyl tube to the bleeder plug at the right front wheel or the right rear wheel.
(2) Loosen the bleeder plug.
(3) Operate the brake actuator to bleed the air using the Techstream.

NOTE: Release the brake pedal at this time.

HINT: This operation stops automatically after 4 seconds.

(4) Check if the operation has stopped by referring to the Techstream display.
(5) Temporarily tighten the bleeder plug.
(6) Repeat the 4 previous steps until all air in the fluid is completely bled out.
(7) Tighten the bleeder plug.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
(8) Repeat all of the above procedures for the other wheel to bleed the air out of the suction line.
(e) Bleed the air out of the pressure reduction line.

NOTICE:
- Perform the bleeding at the 4 wheels.
- Bleed the air by following the steps displayed on the Techstream.

(1) Connect a vinyl tube to one of the bleeder plugs.
(2) Loosen the bleeder plug.
(3) Using the Techstream operate the brake actuator, completely depress the brake pedal and hold it there.

NOTICE:
- During this procedure, the pedal will feel heavy, but completely depress it so that the brake fluid comes out of the bleeder plug.
- Depress and hold the brake pedal. Do not depress and release the pedal repeatedly.

HINT: The operation stops automatically after 4 seconds. When performing this procedure continuously, set an interval of at least 20 seconds.

(4) Tighten the bleeder plug, then release the brake pedal.
(5) Repeat the 3 previous steps until all air in the fluid is completely bled out.
(6) Tighten the bleeder plug.
Torque: 11 Nm (110 kgf-cm, 8 ft-lbf)
(7) Repeat all of the above procedures for the other wheels to bleed the air out of the pressure reduction line.
10. CHECK AND ADJUST BRAKE FLUID LEVEL IN RESERVOIR





(a) Check the fluid level and add fluid if necessary.
Fluid:
SAE J1703 or FMVSS No. 116 DOT3

HINT: Add fluid to a level between the reservoir's MIN and MAX lines.

11. CLEAR DTC
(a) Clear the DTCs (Reading and Clearing Diagnostic Trouble Codes).
12. CHECK DTC
(a) If any DTC is set, perform the troubleshooting for the DTC (Vehicle Stability Control System).
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