With ABS
Bleeding operation is necessary to remove air whenever it entered hydraulic brake system.Hydraulic lines of brake system are based on the diagonal split system. When a brake pipe or hose was disconnected at the wheel, bleeding operation must be performed at both ends of the line of the removed pipe or hose. When any joint part of the master cylinder or other joint part between the master cylinder and each brake (wheel) was removed, the hydraulic brake system must be bled at all 4 wheel brakes.
PRECAUTIONS FOR BLEEDING BRAKES
Prior to bleeding brakes, front and rear displacement cylinder pistons must be returned to top-most (home) position. Using a TECH-1, select "F5" (motor rehome). Motor rehome function cannot be performed if current Diagnostic Trouble Codes (DTCs) are present.
If DTCs are present, vehicle must be repaired and DTCs cleared before performing the motor rehome function as shown procedure below.
1) Raise and suitably support front end of vehicle so that the drive wheels are off the ground.
2) Start the engine, engage the transaxle and run the vehicle above 5 km/h (3 mph) for at least ten seconds.
3) Observe the "ABS" indicator. Make sure that the indicator goes out after approximately three seconds.
- If the "ABS" indicator remains illuminated, a TECH-1 must be used to diagnose the malfunction.
- If the "ABS" indicator goes out and stays off, stop the engine and repeat Steps 2) and 3).
4) Using a TECH-1, enter the manual control function and "Apply" the front and rear motors.
BLEEDING PROCEDURE
NOTE: In the following procedure, use a suitable container and/or shop cloths to catch brake fluid and prevent it from contacting any painted surfaces.
1) Fill master cylinder reservoir with brake fluid and keep at least one-half full fluid during bleeding operation.
2) Attach a vinyl tube to bleeder plug (A) of ABS actuator assembly and insert the other end into container.
3) Depress brake pedal several times and then while holding it depressed, loosen bleeder plug (A) about one-third to one-half turn.
4) When fluid pressure in the cylinder is almost depleted, retighten bleeder plug (A).
5) Repeat this operation 3) and 4) until there are no more air bubbles in hydraulic line.
6) When bubbles stop, depress and hold brake pedal and tighten bleeder plug (A).
Tightening Torque (a): 9 - 13 Nm (0.9 - 1.3 kg m, 7.9 - 9.0 ft. lbs.)
7) Repeat steps 1) through 6) for bleeder plug (B).
8) Bleed from brake calipers/wheel cylinders as shown procedure below.
NOTE:
Perform bleeding operation starting with wheel cylinder farthest from master cylinder and then at front caliper of the same brake line. Do the same on the other brake line.
1. Fill master cylinder reservoir with brake fluid and keep at least one-half full of fluid during bleeding operation.
2. Remove bleeder plug cap.
Attach a vinyl tube to bleeder plug, and insert the other end into container.
3. Depress brake pedal several times, and then while holding it depressed, loosen bleeder plug about one-third to one-half turn.
4. When fluid pressure in the cylinder is almost depleted, retighten bleeder plug.
5. Repeat this operation until there are no more air bubbles in hydraulic line.
6. When bubbles stop, depress and hold brake pedal and tighten bleeder plug.
Tightening Torque (b): 9 - 13 Nm (0.9 - 1.3 kg m, 7.0 - 9.0 ft. lbs.)
7. Then attach bleeder plug cap.
8. After completing bleeding operation, apply fluid pressure to pipe line and check for leakage.
9. Replenish fluid into reservoir up to specified level.
10. Check brake pedal for "sponginess". If found spongy, repeat entire procedure of bleeding.
9) Perform above Steps 1) to 7) again to bleed air from ABS actuator assembly.
10) Road test the vehicle. Make several normal (non ABS) stops from a moderate speed to ensure proper brake system function.